Multi-channel x-ray separator

FIELD: process engineering.

SUBSTANCE: invention relates to ore dressing and may be used in lumpy radiometric separation of ore. Separator includes multi-channel ore lump vibration handler, measuring radiator, X-ray radiator with collimator, X-ray detectors and actuators arranged in each channel and connected with control system, as well as concentrate receiving hoppers and separation tails. Vibration handler is equipped with lump trajectory shaper in the form of gravity conveyor. Gravity conveyor repeats the profile of handler chutes. And is mounted on the side of handler unloading end at blunt angle to the latter and secured on the frame. Measuring radiator is arranged on opposite side of lump free fall zone while X-ray detectors are made up of self-contained receivers. Each said receiver comprises X-ray detector and channel actuator control signal generator. Actuators are made up of air blow-out nozzles, two nozzles per one channel arranged in line with spacing equal to that of chutes and connected to said channel actuator control signal generator. Slit of X-ray radiator collimator, said receivers and blow-out nozzles are arranged in line.

EFFECT: higher accuracy of determining characteristics of signal lump in flight and faster operation of actuators.

15 dwg, 6 cl

 

The invention relates to the beneficiation of minerals and can be used in lump or flow-lumpy radiometric sorting ores.

It is known that the efficiency of the automated radiometric separation of ores is determined by a choice of means of transport while ensuring the highest possible velocities of ores through Obluchye measuring device (BARS). Performance can be increased by multi-grooved separation, and costs are reduced through the use of common nodes forming stream pieces. For the fine fraction with a mass of up to several tens units hundreds of grams, it is preferable to sorting in free fall piece (see, for example, GB 1103591, Slight, 21.02.1968).

Known technical solutions, considering both the schema and the design of separators. In the patent (US 4848590, Kelly, 18.07.1989) described a device for mnogozernovoy radiometric sorting pieces containing the multi vibrator channel, optical analyzer passing and speed of the piece, x-ray analyzers and blowing nozzle, controlled by the automation system. Gathering pieces and their separation is carried out directly on the gravity slid. X-ray fluorescence separator (SU 1391739 A1, "TSVETMETAVTOMATIKA", 30.04.1988) comprises a hopper for ore, two sequentially installed vibration is of itates, the first of which is spread ore, and the second forms in the monolayer, which is controlled by radiometric means. The sliding device that manages the flow of ore on signals with radiometric means, directs ore to stockpiles in accordance with the separation parameters.

In the patent RU 2069100 C1, wolves and others, 20.11.1996 described radiometric separator containing two radiation source and the Registrar of secondary radiation that are installed in housings facing each other from opposite sides of an inclined conveyor, and blowing pneumonectomy installed at the site of free fall. Two serially connected to the radiation source and the analyzer is directed to the solution of the problem of compensation dusty Windows of the measuring means.

A device for pokuskovoi separation of ores (CN 2229844 U, YUANKE LI 26.06.1996). It contains mounted on the frame multi-unit formed by several grooves directly in the canvas along the length of the conveyor belt, the measuring device and a pneumatic actuator connected to the control unit by the separation process. However, this solution will not provide accurate positioning of the pieces when worn grooves when provided for in this decision, the diagnosis of ores "transmission" through polot the tape. In addition, the failure of one of the channels, and each groove has an individual meter and control device, to negate the result of all multi-channel sorting.

Described an x-separator for patent RU 2344885 C2, PETZOLD, etc., 27.01.2009 - prototype. It contains a frame, which is equipped with an inclined chute associated with the belt conveyor, Obluchye measuring device and blowing device blowing nozzles mounted on the plot fall after conveyor belts, bins for collection products. The x-ray source is placed above the conveyor belt, and the detector means is a line of detectors, consisting of many separate elements, are located across the conveyor belt, and have spectral filters to use more than two energy levels. The device has a housing for shielding radiation.

However, this device uses a schema "on passage of radiation through the tape and controlled piece, due to the specificity of the separated material. In addition, scanning across the entire width of the conveyor belt, because the separator does not use the classification of size sorting of the product and does not provide funds for the education of the streams of the separated material.

A device for rengeneration the historical enrichment mineralized rock mass (EN 2151643 C1, Cancel and others, 27.06.2000), built according to the classical scheme. It includes the bin feeder pieces of the separated material vibrating type, marker pieces, belt conveyor, BARS, actuating unit, receiving bins concentrate and tailings separation, and the control unit. The device allows for pokuskovoi and batch sorting.

Describes the design of individual functional units radiometric separators. Thus, in the invention EN 2168365 C2, Korenev O.V. and others, 10.06.2001 described sorting device radiometric separator, in which the Executive node changes the trajectory of sorted material made in the form of two deflecting mechanisms - pneumatic valves and nozzles with the possibility of pulse emission of liquid or gas, sequentially arranged vertically at different heights. In the patent RU 2153453 C2, Fedorov CREATING and others, 27.07.2000 described vibrating conveyor feeder for pokuskovoi supply bulk material with adjustable performance and at the same time the separation of the fine fraction. In the invention (EN 2158917 C2, Korenev O.V. and others, 10.11.2000) described or controlling device, the block radiation-detecting x-ray radiation which is movably mounted on a support frame can be rotated via the gear motor in the direction Gras is werowocomoco node cassette unit standard samples.

Closest to the patent is chetyrehluchevoy an x-separator type SRF (separator x-ray fluorescence), described in the article: Uotation, Manual x-ray radiometric separation, LLC "RADOS", 2006 (http://rados.ru/info-article.html?st=10 - prototype). An x-separator includes a four-channel libraryclass of ores ore in the form of an inclined surface with parallel grooves for the formation of a zone of free fall of specimens: (a) Obluchye measuring device containing a mounted in the housing of the x-ray emitter with a collimator and the detection unit of x-ray radiation; b) the Executive bodies of sliding mechanisms of the electromagnetic type, is placed in each channel associated with the control system. Hoppers concentrate and tailings separation is installed on the frame.

The prototype has some disadvantages, in particular, in terms of performance. However, to increase the number of parallel grooves impossible due to the large dimensions in the horizontal plane of detection units. In addition, if the sort to send the entire class (-150+20) mm (module screening 7.5), the layout, and, as a consequence, the performance of the sort will be far from optimal. In addition, sliding fur the ISM, works mainly at frequencies not higher than 10 Hz, which also limits the possible performance and therefore the performance.

The present invention is directed to improving the performance of multi-channel x-separator and improving the quality of separation.

An x-separator includes multichannel libraryclass of ores ore in the form of an inclined surface with parallel grooves and set in the area of free fall of ores: Obluchye measuring device containing a mounted in the housing of the x-ray emitter with a collimator, means for detecting x-ray radiation and Executive bodies placed in each channel and associated with the control system, receiving bins concentrate and tailings separation, installed on the frame.

Patented separator differs from the prototype in that libraryclass equipped with a shaper of the trajectory of the falling pieces in the form of gravity slid repeating the profile grooves of vibronaladka installed from the side of the discharge end of vibronaladka at an obtuse angle to the latter and fixed to the frame. Obluchye measuring device placed on the other side of the zone of free fall of ores, and the means of detecting x-ray radiation present a range of Autonomous F. nctioning receiving units, each of which contains the x-ray detector and the signal control of the Executive bodies of this channel. Executive bodies made in the form of pneumatic blowing nozzles, two per channel, installed in series with the periodicity of the grooves symmetrically their longitudinal axes and are connected via the air valves for the power generation of control signals by the Executive bodies of the channel. The slit of the collimator of the x-ray emitter, the ruler of the Autonomous functioning of foster blocks and installed in a number of blowing nozzles are parallel to each other.

The separator can be characterized by the fact that libraryclass of ores ore contains eight channels formed by grooves having a semi-cylindrical or U-shaped profile section. In each channel at the transition of vibronaladka to gravity slid installed a swinging flap, made with the possibility of single-piece removal of ores at the gathering to the storage, with swinging flaps all channels are mounted on a common horizontal axis, mounted on vibronaladka.

The separator may be that it includes a calibrator sensitivity, made in the form of a set of models, specimens with known parameters and a mechanism allowing them alternately enter into the zone of the free fall of ores, associated with the control system.

The separator can be characterized also by the fact that the receiving unit has installed in chassis slot collimator, the counter x-ray radiation, is connected through a filter to a power source and means of strengthening and generating signals related to the signal processing unit and control pneumatic valves of the channel and a microcontroller configured to connect via Ethernet to the control system of the separator, while the body is made in the form of a parallelepiped, and a collimator adjacent to the window counter, mounted in the hole on the side of the case.

The separator can be characterized also by the fact that pneumatic blowing nozzles pressure sensors connected to the signal processing unit and control pneumatic valves channel.

The separator can be characterized, moreover, by the fact that the control system includes related information exchange control unit separation process, the control block calibrator, control unit irradiation device, the power management mechanisms and interface for aggregation in the automated control system of nudeseperation factory.

The technical result of the invention is the formation of dense flow with sustainable path of free fall of ores and their with what parasia, i.e. increasing the reliability characterization of single ore in flight while ensuring the performance of the Executive bodies. This is achieved by increasing the number of channels and their structural performance, and the introduction of additional means of generating optimal trajectories of ores, location optimization system measurements of specimens in a single design and organization eject efforts through the use of a pair of nozzles.

The invention disclosed in the drawings,

where figure 1 - view of the separator Assembly;

figure 2 - configuration of nodes in a zone of free fall of ores (enlarged);

figure 3 - design of vibronaladka;

figure 4 - design of gravity slid;

5 is a view of the marker, a swinging gate, the storage and the unit Executive bodies (enlarged);

6 is a block design of Executive bodies;

7 - placing blowing nozzles on the receiver;

Fig - ray emitter with a collimator;

Fig.9 is a view of the alignment mechanism and the detection unit of x-ray radiation;

figure 10 - block design of the x-ray detector;

11 is a block diagram of the block of figure 10;

Fig - the design of the calibrator sensitivity;

Fig - block diagram of the control calibrator;

Fig is a block diagram of a control system of the separator.

Fig algorithm of functioning of the separator.

Figure 1 presents a General view of the separator, and figure 2 - ukrupnennom configuration nodes in the area of free fall of ores. The separator contains installed on the frame 1 hopper 2, the feeder-roar 3, Electromechanical libraryclass 4, season 5 of the spillage, the storage 6, the irradiation device 7, block 8 x-ray detectors, block 9 Executive bodies, the bins 10 concentrate and tailings, the duct 11 aspiration, the receiver 12, the fastening elements 13, the rack 14. Conventionally illustrates the flow of ores 15. In addition, the separator includes a calibrator 16 sensitivity from models. To prevent surface wear and failure of the feeder-crash lined with metal plates. Management system separator is placed in a control Cabinet (not shown) and includes a block of 100 control mechanisms and the control unit 110 processes for the separation.

Figure 3 shows the design of vibronaladka 4. He has zheloboobraznogo housing 41 on the bottom surface of which is formed of eight channels 42, the so-called "streams" for centering and unfolding of the pieces in the chain. At the downstream end 43 in each channel 42 on the horizontal axis 44 is installed in a moving flap 45 which has a capability piece of removing ores at the gathering with chute channels 42 to the storage 6. The lower end of the valve 45 narrowed. Assembly elements 44, 45 and 6 show the and 5. Vibrations are generated by Electromechanical vibrators 46, for example, type IV-N that are more sloping than the commonly used electromagnetic actuators, frequency response, allowing you to improve the quality of regulation characteristics of the vibration. In the process of vibronaladka 4 valve 45 vibrate, as installed on an axis attached to the marker that provides the best separation of ores. Vibration characteristics of the unit are controlled by the accelerometer 47.

On the frame 1 is fixed shaper trajectory of the falling pieces in the form of gravity slid 6, which provides the "reassurance" of ores in the area of their free fall. The storage 6 (see figure 4, a, b) has a profiled element 61, in the form of repeating the profile and the period of the grooves of the channels 42 vibronaladka. The storage 6 is installed on the discharge end 43 of vibronaladka at an obtuse angle between the axis 48 of the gutter channel and the axis 62 of the chute gravity slid and has no mechanical contact with the latter. The fastening elements 63 and rod 64 (see figure 5) allow rotation to adjust the position of the gravity slid and secure it in position.

Figure 5 ukrupnennom shows the layout of the unit 4 together with the gravity slid 6, unit 9 of the Executive bodies. Block 9 made in the form of 16 pneumatic blowing nozzles 91, that is, two nozzles on each channel 42 (6, 7). Nozzle 91 installation is Lena in line with the periodicity of the grooves of the channels 42 of the pickup 4 and gravity slid 6 symmetrically with their longitudinal axis and attached to the panel 92. It is experimentally shown that the simultaneous impact on ore short pneumonology (duration in the range of 20-30 msec) through two nozzles installed in each channel, allows to reduce the probability of missing ore during its removal from the stream. Nozzle 91 through individual air valves 93 are attached to the air valve 94, which is connected to the receiver 12. The valve body 94 and the panel 92 is attached to the frame 1. The cavity of each nozzle 91 is communicated through the hole in the side sensor 95 of the pressure differential type, intended to indicate the fact making pneumonolysis, which exerts a force on a given ore from the stream

The irradiation device 7 and block 8 detectors (see figure 1, 2) are installed separately on the rack 14 by means of fastening elements 13 and on the other side from the means of formation of free fall pieces 15. To configure measurement of radioisotope x-ray system on the rack installed mechanisms 141 to move and lift.

The irradiation device 7 (Fig) includes a housing 71, in which is installed an x-ray tube 72 and a slit collimator 73, intended for the formation of narrow, size h, the x-ray beam vertically, i.e. in the direction of free fall of ore 15 and wide, L horizontally. In this case, the value L of the slit of the collimator 73 is calculated so as to provide irradiation of specimens simultaneously in all eight channels. X-ray tube 72 is connected to the unit 74 (see Fig) irradiation device for automatic switching on and off x-ray tube and the stabilization of the mode of its operation.

Unit 8 detectors (Fig.9) is placed below the device 7 and is a set of eight (number of channels) independently functioning unit blocks 81 detectors, mounted in the housing 82 and forming a line of detectors. The narrow slit of the collimator 73, line detectors 81 and the number of blowing nozzles 91 are placed parallel to each other.

Each detector 81 (figure 10, 11) are designed as Autonomous functioning unit, placed in individual housing 811. On the side surface 812 of the casing in the hole fixed collimator 813 adjacent to the window counter 814. The arrow shows the direction of arrival of the radiation. Inside 811 posted by high voltage source 815 power filter 816, block 817 processing signals from the sensors 95 and pressure control pneumatic valves 93, associated with block 818 display. The signal from filter 816 through the pre-amplifier 819 and cost 820 amplitude of the encoder is transmitted to the microcontroller 821. In accordance with its micro is ontroller program, it digitizes the amplitude and number of pulses. The microcontroller 821 interface 822 communication via Ethernet is connected with the control unit 110 of the separation process.

Accommodation in the case of each individual detector means processing signals from the counter and generating the appropriate signals to pneumatic valves reduces the distance at which the transmitted analog signal, thus reducing interference, increases the reliability. In addition, it ensures ease of maintenance and replacement of the unit in case of failure.

On Fig, 13 - design of the calibrator 16 sensitivity and block diagram of control. The sensitivity calibrator is a set of models, specimens with known parameters and a mechanism allowing them alternately enter into the zone of sensitivity and calibration tract. The calibrator includes a feeder calibration models that are installed on the frame 1 of the separator and having a housing 161, within which the rollers 162 posted by circuit 163, which includes a calibration model 164. As models are samples of the rock mass with a given ratio of elements-indicators used in spectrometry specimens of this rock mass. Moving circuit 163 is stepper motor 165. On the chain is also enshrined signal elements 166, which in conjunction with limit switches 167 and Datca is AMI 168 Parking are fixing specified models 164 in the zone of sensitivity of the detectors 81. Block 169 controls the position of the models associated with the block 110 and is located in the closet of the separator. Block 169 consists of a power supply Board switching and two blocks stepper motor control 165. The housing 161 is attached to the rack 14 by fasteners 1611.

On Fig presents the block diagram of the automated system of the control cage, which blocks 100 and 110, and Fig algorithm operation.

Led intelligent control device, an Electromechanical system of the separator is carried out by block 100, which provides:

(a) upon command from the main controller unit 110 starting and stopping of the power devices mechanical parts: vibrating feeder-roar 3 and Electromechanical vibronaladka 4;

b) tracking the status of the mechanical part by a signal from the accelerometer 47 and, if necessary, the regulation performance of the separator.

C) formation and transfer to the upper level in block 110 information about the state of the system 100, and in case of accidents - address and device settings that caused the accident. The unit 100 on the basis of the controller Siemens S7-200 CPU224.

Leading smart device unit 110 is implemented by control of the separation process. Block 110 provides:

a) the management unit 74: start, stop, setting the operating parameters and the control condition the x-ray tube 72;

b) management unit 169 calibrator 16;

C) control blocks 81 detectors;

g) communicating through the interface 130 connection with the ACS nudeseperation factory (start, stop command from the ACS nudeseperation and send it with information on the results of the sort and condition of the equipment (separator);

d) the control unit 100 control mechanisms.

Block 110 is implemented on the basis of industrial controllers Fastwel CPU686E.

The separator operates as follows.

The actual process of separation of ores precedes the process of setting the sensitivity of the separator. For this purpose, the unit 110 sends a signal to block 74 to connect the x-ray tube 72, and the connecting block 817 signal processing and control pneumatic valves 93, the latter when the setting is not activated.

From block 110 to block 169 management calibrator 16 receives a command to start stepping motor 165. Stepper motors are driven by a chain 163 mounted on it the calibration models 164 until the actuation of the limit switches 167 or sensors 168 Parking. The signal aldatzeko provisions of the models entered in block 169 and stops the chain. In the case of positioning errors of the model 164 move on to the actuation of the limit switches 167, the signal from which is directly passed to the block 169 and disables the stepper motors.

Measuring p is therefore the introduced model, the sorting program builds a regression relationship between the classification sign and mineral content. Thus calibrates the spectral sensitivity for subsequent separation of ores. Automatic calibration can be carried out as necessary and, in particular, about once a day. Upon completion of the calibration circuit removes the model from the zone of free fall of ores and parks calibrator 16.

Then block 110 command is issued at block 100 for switching the x-ray tube 72, blocks 81 detectors of x-rays, then vibronaladka 4 and feeder-roar 3.

Ores 1 given fractions to be sorted, come from the hopper 2 into the feeder-roar 3. By adjusting the amplitude and frequency of oscillation of the Electromechanical vibrator 46 is supported by the given productivity. The parameters of the oscillations recorded by the accelerometer 47 and the adjustment is made by block 100.

The thickness of the bulk layer pieces of ore is governed by the inclination of the feeder 3 to the horizon. Through the bars of the feeder-roar 3 is given substandard material, mainly oversleep, with sizes below the lower bound of the sort on this module, class size, and dust, reducing contrast measurements. Is forced about the HC: for extraction through the grate feeder-roar 3 and they are on the material from top to bottom is fed a stream of air, which is discharged through the duct 11, the aspiration system. Next ore gets on libraryclass 4, is distributed along the gutters of the channels 42, where the ores 1 line "streams". At the gathering with channels 42 swinging on the axis 44 of the valve 45 apiece bring the pieces to the storage 6. The lower end of the valve 45 narrowed. The storage 6 provides in the direction of the longitudinal axis 62 of the formation of a steady free fall of pieces 15, contributes to their "calming" in flight.

Further, in the area of free fall across the entire width of the stream ores 15 irradiated by x-rays through a slit collimator 73, a gap which is on the long side (L size) is mainly horizontal. Secondary radiation from the ore in the corresponding channel 42 is taken by the block 81 of the detector of this channel. Slit collimator 813 and collimator 73 on their long sides perpendicular.

Each counter 814 radiation is converted in proportion to the energy quanta in the voltage pulses, which are amplified in block 819, processed by block 820, and supplied to the microcontroller 821. The analysis of the spectra and the inherent separation criteria microcontroller 821 decision on the operation of pneumatic valves 93. Managed by the air valves 93 from block 817, which provides for the issuing power pneumonolysis taking into account the delay time of the fall. Pneumonolysis are issued simultaneously from two nozzles 91 and provide unloading ore from the stream. The fact developing nozzle blowing pneumonolysis is controlled by means associated with the nozzle 91 differential sensors 95 pressure, which are connected to the inputs of the block 817, the output unit attached to the led. Information about the correct functioning of each of the blocks 81 of the detector is passed over the network Ithernet in block 110 control the separation process. Information on the functioning of the separator as a whole is transmitted through the interface 130 of the connection.

Mass production and test separators patented design showed their high efficiency and ability to work as part of the nodes of the concentrator. Maximum capacity of one separator with 8 streams is 10 t/h for the sort of class size (-50+25) mm enrichment Factor of the original ore is in the range of 1.2-4 ated and depends on technological properties of ores, yield and quality of the products of the separation.

1. An x-separator that includes multichannel libraryclass of ores ore in the form of an inclined surface with parallel grooves and set in the area of free fall of ores Obluchye measuring device containing a mounted in the housing of x-ray islocated is with the collimator, means of detecting x-ray radiation and Executive bodies placed in each channel associated with the control system, receiving bins concentrate and tailings separation, mounted on the frame, characterized in that libraryclass equipped with a shaper of the trajectory of the falling pieces in the form of gravity slid repeating the profile grooves of vibronaladka installed from the side of the discharge end of vibronaladka at an obtuse angle to the latter and attached to the chassis, while Obluchye measuring device placed on the other side of the zone of free fall of ores, and the means of detecting x-ray radiation present a range of Autonomous functioning of receiving units, each of which contains the x-ray detector and the block the generation of control signals by the Executive bodies of the channel, while the Executive bodies made in the form of pneumatic blowing nozzles, two per channel, installed in series with the periodicity of the grooves symmetrically their longitudinal axes and are connected via the air valves for the power generation of control signals by the Executive bodies of the channel, while the slit of the collimator of the x-ray emitter, the ruler of the Autonomous functioning of foster blocks and installed in a number of blowing nozzles dissolved, and the juxtaposed in parallel to each other.

2. The separator according to claim 1, characterized in that libraryclass of ores ore contains eight channels formed by grooves having a semi-cylindrical or U-shaped profile cross section, in each channel at the transition of vibronaladka to gravity slid installed a swinging flap, made with the possibility of single-piece removal of ores at the gathering to the storage, with swinging flaps all channels are mounted on a common horizontal axis, mounted on vibronaladka.

3. The separator according to claim 1, characterized in that it contains calibrator sensitivity, made in the form of a set of models, specimens with known parameters and a mechanism allowing them alternately enter into a zone of free fall of ores associated with the control system.

4. The separator according to claim 1, characterized in that the receiving unit has installed in chassis slot collimator, the counter x-ray radiation, is connected through a filter to a power source and means of strengthening and generating signals related to the signal processing unit and control pneumatic valves of the channel and a microcontroller configured to connect via Ethernet to the control system of the separator, while the body is made in the form of a parallelepiped, and a collimator adjacent to the window counter, mounted in the hole on the side to which Cusa.

5. The separator according to claim 1, characterized in that the pneumatic blowing nozzles pressure sensors connected to the signal processing unit and control pneumatic valves channel.

6. The separator according to claim 1, wherein the control system includes related information exchange control unit separation process, the control block calibrator, control unit irradiation device, the power management mechanisms and interface for aggregation in the automated control system of nudeseperation factory.



 

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EFFECT: increasing selectivity and efficiency of separation process.

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EFFECT: improving separation process effectiveness.

4 tbl, 1 ex

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FIELD: mining.

SUBSTANCE: invention refers to concentration of minerals, particularly to methods of roentgen-luminescent concentration of crushed mineral material of coarse fractions, size of which is comparable with length of zone of excitation-recording of separator. To achieve the said excitation of luminescence of minerals is performed with pulse roentgen radiation (PRR), further summary intensiveness of short component of luminescence (SCL) and prolonged component of luminescence (PCL) are measured at the moment of PRR operation; intensiveness of PCL is measured with delay after termination of PRR operation; values of ratio of summary intensiveness of SCL and PCL to intensiveness of PCL are determined and compared to a threshold value; further minerals are separated according to assumed determination. Also luminescence of minerals is excited with at least two PRR. At each pulse of PRR value of intensiveness of PCL is compared with preset threshold value and value of ratio of summary intensiveness of SCL and PCL to its intensiveness of PCL is recorded. Notably, value of above said ratio is accepted as equal to zero, if value of intensiveness of PCL is less, than the threshold one. Value of difference between current and preceding values of ratio of summary intensiveness of SCL and PCL to intensiveness of PCL is determined and determination "useful mineral" is assumed, if value of ratio of summary intensiveness of SCL and PCL to intensiveness of PCL is less, than preset threshold value and if simultaneously all values of difference between current and preceding values of above said ratio are positive.

EFFECT: upgraded selectiveness of roentgen-luminescent separation of minerals of coarse grades due to avoiding false extraction of associated minerals and consequently increased contents of useful mineral in concentrate (upgrading of condition).

2 dwg

FIELD: mining.

SUBSTANCE: invention refers to extraction of minerals, particularly to methods of concentrating crushed mineral material. The method consists in transporting a flow of separated material, in pulse irradiation of this material with exciting radiation, in recording intensity of luminescent mineral signal, in processing this signal for determination of normalised auto-correlated function and in comparing normalised auto-correlation function with a specified value. Also on-line there is performed parallel recording of the luminescent mineral signal intensity in several ranges of values: with a fixed coefficient of amplification and simultaneously with N-multiple decrease of coefficient of amplification, further there is performed processing of signal of luminescent mineral for determination of normalised auto-correlation function; additional processing of the recorded signal is carried out in the range of its true values. Mineral is chosen from separated material in the case, if obtained values of all determined properties of recorded signal of fluorescence are in preliminary specified for each of them range.

EFFECT: increased on-line selectivity of concentrated material separation from bearing material and associated minerals.

2 dwg

FIELD: chemistry.

SUBSTANCE: method of automatic sorting of soils contaminated with radioactive nuclides lies in the following: fine classes of soil with coarseness less than 20-30 mm, are supplied onto separator belt in form of continuous flow, which together with belt passes through two successively placed combined measurement units, each of which simultaneously and separately registers gamma- and beta- radiation. Signal from measurement unit goes to separating two-step mechanism. Device for method realisation consists of set of sieves for sising initial material, unit of soil reception, feeder, supplying soli onto belt of sorting machine and separating mechanism. Sorting machine represents frame with rotating drums, on which 2-4 thin and narrow autonomous belts with flanges are pulled on, along each two also autonomous combined measurement units are located, each of which consists of unit of beta-radiation detectors, located above sorting machine belt and unit of gamma-radiation detectors, located under belt, central vertical axes of both units coincide. Near front belt end two-step separating mechanism is located.

EFFECT: invention allows sorting soils with small portion weights.

4 cl, 2 dwg, 1 tbl

FIELD: technological processes.

SUBSTANCE: luminescence is excited by pulse X-rays, and luminescent light flux that originates from radiated material, which stays in the maximum range of diamond slow component radiation, is transformed into electric signals. Digitisation of obtained aggregate of luminescence intensity values is carried out. Then intensity values are calculated for slow and fast components of luminescence at the moment of pulse X-rays interruption. Separation criterion is calculated, which is equal to ratio of design intensity values of slow and fast components of luminescence. If separation criterion stays in the range preset by threshold values, signal is sent to actuating mechanism for separation of useful material into concentrate sump.

EFFECT: higher selectivity of separation process and extraction of valuable component by application of differences in kinetics of separated materials X-ray luminescence.

1 dwg

FIELD: technological processes; mining.

SUBSTANCE: method involves exciting irradiation of minerals, luminescence filtration, registration of filtered luminescent light flux part and useful component separation according to a given light flux value. Light flux registration is performed in the zone of spectral luminescence density minimum of separated minerals. During light flux filtration blue-green spectral zone within the range of 450-550 nm is separated, e.g. through a couple of SZS-3 and SS-20 filters or interference filter with maximum permeability at 520-530 nm.

EFFECT: increased process selectivity.

3 cl, 9 dwg, 1 ex

FIELD: enrichment of minerals.

SUBSTANCE: method comprises exciting luminescence by means of pulse Roentgen radiation with a pulse duration sufficient for exciting long-term luminescence components, measuring intensity of the long-term components of luminescence after the end of the pulse with a time delay sufficient for decay, comparing the value obtained with the criterion of separation of mineral, and repeated measurement of the intensity of the long-term components of luminescence in a time interval that does not exceed the time interval between the exciting Roentgen pulses. As a criterion, the rate of luminescence relaxation is chosen. The rate of luminescence relaxation is determined from the difference of logarithms of intensity of long-term components of luminescence.

EFFECT: improved quality of separation.

2 cl, 5 dwg

FIELD: mining industry; diamonds mining.

SUBSTANCE: the invention is pertinent to mining industry, in particular, to diamonds mining. The technical result of the invention is increase of electrical safety of a separator and reliability of its operation with simultaneous decrease of weight and dimensions of a power supply source for an X-ray tube. The separator contains a device of loading of a feed stock, a chute for delivery of the feed stock in a zone of detection of a required product, an X-ray tube connected to a source of its power supply, a photomultiplier, a block of control and data processing, a device for separation of a target product and a device for separate collection of the target and the end products. The source of power supply for the X-ray tube contains a transducer of mains voltage into low-voltage high-frequency voltage, a high-voltage transformer and a voltage multiplier. At that the high-voltage transformer and the voltage multiplier and also the X-ray tube are placed in a hermetic body filled in with a high-voltage insulating substance. One wall of the body has an opening, in which there is a fixed anode of the X-ray tube, which window for pass of the X-rays protrudes beyond the limits of the body.

EFFECT: the invention ensures electrical safety of a separator and reliability of its operation with simultaneous decrease of weight and dimensions of a power supply source for an X-ray tube.

1 dwg

FIELD: concentration of mineral resources.

SUBSTANCE: method includes irradiation of source material during its displacement through control area in piece-wise mode by x-ray radiation. Characteristic roentgen-fluorescent radiation is recorded for at least one of controlled components and size of controlled piece is determined. Concurrently within limits of same control zone roentgen-luminescent radiation of controlled components of source material is recorded. Source material is separated in accordance to separation criteria set for both recorded radiation and set limits of separation. Source material can be separated on three products. As source material following substances can be used: diamond-containing resource, wherein controlled components are diamond and kimberlite or diamond and accompanying minerals - calcite, zircon; manganese ore, where controlled components are manganese and apatite, as well as manganese ore, where controlled components are manganese and calcite; tungsten-molybdenum ore, where controlled components are tungsten and molybdenum; scheelite ore, wherein controlled components are scheelite and rock, containing luminescent materials.

EFFECT: higher efficiency.

8 cl, 6 ex

FIELD: minerals dressing.

SUBSTANCE: the offered inventions concern to dressing of minerals, in particular, to dressing of a ground mineral material. The technical result of the inventions is improved selectivity of separation of a source material by a choice of efficient way of separation and elimination of an effect of noises of a channel of registration and instability of the excitation system operation; improved automatic adjustment of the registration and excitation systems, reduction of an amount of used hardware and the time necessary for performance of the prestarting inspection and also provision of the automatic prestarting and periodic inspection and an increase of its reliability. For this purpose the separator contains means of delivery and transportation of the source material in a zone of inspection; a source of an exciting radiation; a photo-receiving device, and means of treatment of a signal of the luminescence including an analog-digital converter (ADC), a unit of the random-access memory (RAM), a register of a separation threshold and a microprocessor. In addition the separator is supplied with a register of delay and a synchronizer, the first output of which is connected to the input of the analog-digital converter start; the second output is connected to the input of the RAM; and its third output - with the input of the record of the microprocessor. The reading inputs of the random-access memory, the register of a threshold and the register of delay are connected accordingly to the first, second and third outputs of the microprocessor. The method of control over operation of the separator is based on a periodic use of its indicators in absence of a separated material for registration of intensity of their luminescence. In the capacity of an indicator they choose the air filling the volume of the separator, in the capacity of the way of separation - the normalized autocorrelation function (NACF) of a luminescence signal. At that they normalize the value of the NACF signal of the luminescence by its division by the result of integration of a square of a registered signal of a luminescence. Determine a threshold of separation equal to a threshold set at operation in a mode of separation. The value of the parameter of separation they choose so, that the value of NACF at the chosen value of the parameter exceeded the threshold.

EFFECT: the invention ensures improved selectivity of the source minerals separation, elimination of operational noises of the registration and other systems, automatic adjustment of the systems, reduction of hardware amount and time for preparation, increased reliability.

8 cl, 3 dwg

FIELD: separating solid materials.

SUBSTANCE: method comprises processing the recorded luminescence signal from a mineral and separating the mineral to be enriched by comparing the signal with a specified threshold signal according to the separating criterion. For the separating criterion, a self-correlation function of the luminescence signal of the mineral is used.

EFFECT: enhanced quality of sorting.

8 cl, 3 dwg

FIELD: separating solid materials.

SUBSTANCE: method comprises supplying ore to the measurement zone, recording the flow of ionizing radiation, compensating illumination, and separating ore into the products of enrichment according to the value of the threshold signal.

EFFECT: enhanced efficiency.

3 cl, 2 dwg, 1 tbl, 1 ex

FIELD: minerals concentration equipment, in particular, lump-by-lump separation of radioactive and non-radioactive ores.

SUBSTANCE: method involves feeding ore lumps into measurement zone; registering gamma-radiation and separating ore lumps into concentration products on the basis of signal value surpassing predetermined tuning threshold value, with registration of gamma-radiation being performed with exposure and tuning threshold selected individually for each ore lump; selecting exposure duration in proportion to length of ore lump; selecting tuning threshold for each ore lump equal to product of tuning threshold value for ore lump with average weight in class under sorting process multiplied by square of ratio of exposure duration for ore lump under measurement process to exposure duration for ore lump with average weight in size class under sorting process.

EFFECT: increased efficiency of separation process by optimizing conditions for measuring all of ore lumps regardless of their weight.

1 tbl, 1 ex

FIELD: enrichment of minerals.

SUBSTANCE: method comprises exciting luminescence by means of pulse Roentgen radiation with a pulse duration sufficient for exciting long-term luminescence components, measuring intensity of the long-term components of luminescence after the end of the pulse with a time delay sufficient for decay, comparing the value obtained with the criterion of separation of mineral, and repeated measurement of the intensity of the long-term components of luminescence in a time interval that does not exceed the time interval between the exciting Roentgen pulses. As a criterion, the rate of luminescence relaxation is chosen. The rate of luminescence relaxation is determined from the difference of logarithms of intensity of long-term components of luminescence.

EFFECT: improved quality of separation.

2 cl, 5 dwg

FIELD: technological processes; mining.

SUBSTANCE: method involves exciting irradiation of minerals, luminescence filtration, registration of filtered luminescent light flux part and useful component separation according to a given light flux value. Light flux registration is performed in the zone of spectral luminescence density minimum of separated minerals. During light flux filtration blue-green spectral zone within the range of 450-550 nm is separated, e.g. through a couple of SZS-3 and SS-20 filters or interference filter with maximum permeability at 520-530 nm.

EFFECT: increased process selectivity.

3 cl, 9 dwg, 1 ex

FIELD: technological processes.

SUBSTANCE: luminescence is excited by pulse X-rays, and luminescent light flux that originates from radiated material, which stays in the maximum range of diamond slow component radiation, is transformed into electric signals. Digitisation of obtained aggregate of luminescence intensity values is carried out. Then intensity values are calculated for slow and fast components of luminescence at the moment of pulse X-rays interruption. Separation criterion is calculated, which is equal to ratio of design intensity values of slow and fast components of luminescence. If separation criterion stays in the range preset by threshold values, signal is sent to actuating mechanism for separation of useful material into concentrate sump.

EFFECT: higher selectivity of separation process and extraction of valuable component by application of differences in kinetics of separated materials X-ray luminescence.

1 dwg

FIELD: chemistry.

SUBSTANCE: method of automatic sorting of soils contaminated with radioactive nuclides lies in the following: fine classes of soil with coarseness less than 20-30 mm, are supplied onto separator belt in form of continuous flow, which together with belt passes through two successively placed combined measurement units, each of which simultaneously and separately registers gamma- and beta- radiation. Signal from measurement unit goes to separating two-step mechanism. Device for method realisation consists of set of sieves for sising initial material, unit of soil reception, feeder, supplying soli onto belt of sorting machine and separating mechanism. Sorting machine represents frame with rotating drums, on which 2-4 thin and narrow autonomous belts with flanges are pulled on, along each two also autonomous combined measurement units are located, each of which consists of unit of beta-radiation detectors, located above sorting machine belt and unit of gamma-radiation detectors, located under belt, central vertical axes of both units coincide. Near front belt end two-step separating mechanism is located.

EFFECT: invention allows sorting soils with small portion weights.

4 cl, 2 dwg, 1 tbl

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