Device for x-ray separation of minerals
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.
SUBSTANCE: method involves determining coordinates of subsequent centers of inertia by coordinate axes X and Y, which are calculated by 3 subsequent points of contour; determining belonging thereof to multiplicity of coordinates of boundary points of object projection; counting centers of inertia not belonging to said multiplicity of coordinates.
EFFECT: increased precision in sorting of seed.
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: woodworking industry; production of multilayer wood materials, plywood or layered materials.
SUBSTANCE: the invention is pertaining to the field of woodworking industry, in particular, to a method of increasing strength and-or decreasing its deviations in the multilayered wood materials, plywood and the similar wood materials. The method includes measuring of the density (ρ) of the dry substance of the wood veneer sheets by means of a high-frequency electromagnetic resonance and additionally - the analysis of uniformity and-or a fibrous structure of the indicated sheets using darkening (R) their surfaces. In the case when a sheet of the wood veneer contains some number of the local first areas, which are more dark than the main darkening of the wood veneer sheet surface, such sheet has its own calculated density (ρc) of the dry substance set on the more low level as compared with its originally measured value (ρm) of the dry substance. On the other hand, if the wood veneer sheet has essentially homogeneous darkening, for this sheet they estimate the longitudinal and transversal distribution of its density of the dry substance. If these parameters are essentially uniform, then for the process of sorting the calculated density (ρc) of the dry substance of the indicated wood veneer sheet is set higher, than its originally measured value (ρm). the wood veneer sheets assort On the basis of the indicated calculated dry substance densities the wood veneer sheets are assorted at least into two different categories of density. In the first such category (A) the density of the dry substance is higher, than in the second category (B). The wood veneer sheets are laid face to face for forming a laminated wood, plywood or any other laminated material. At that, the wood veneer sheets referred to the first and the second categories of density serve accordingly as the surface sheets and the middle sheets.
EFFECT: the invention ensures an increase of strength and/or a decrease of its deviation values of the dry substance in the multilayered wood materials, plywood and the similar wood materials.
21 cl, 8 dwg
FIELD: jewel technology.
SUBSTANCE: invention relates to methods for concentrating diamond-containing ore using physical effects and can be used to control processes. Diamond imitator for controlling diamond-containing raw material separation contains solid material, which is a mixture of binder with weighing, luminescent, coloration, and magnet components, said binder containing X-ray transparent substance, said magnet component containing conducting and X-ray transparent substance, and said weighing component containing substances or substance mixtures selected from second series elements with density 2.7 g/cm3 and effective atomic number 5.5-6.5.
EFFECT: increased separation process reliability and reduced price of diamond imitator.
7 cl, 4 ex
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: mining industry; minerals dressing and grading.
SUBSTANCE: the invention is pertaining to the field of upgrading and grading of minerals and may be used at dressing of the diamond-bearing ores and quality grading of the diamonds. The method provides for the optical rays irradiation of the minerals, registration of the scattered radiation in two spectral bands of the determined width, one of which contains the line of the Raman effect, the second band does not contain the line of the Raman effect, but envelops the first band from two sides, comparison of the signals in these two bands, identification and separation of the in compliance with the results of this comparison, in which the width of the spectral bands is regulated according to the condition: ▵ν1=ν0±δ,▵ν2= ν0±2δ-▵ν1, where: ▵ν1 - the bandwidth of the spectrum containing the line of the Raman effect;▵ν2 - the bandwidth of the spectrum, which does not contain the line of the Raman effect, but enveloping the first band from two sides; ν0 - the frequency of the maximum of the line of the Raman effect; δ - the band of the a frequencies of the selected line in the Raman effect spectrum. The device consists of: the storage hopper; the feeding mechanism; the source of the optical radiation; the inlet slit; the convergent lens; the dispersing component; the measuring channel with the outlet slit of the determined width, which outer surface is reflective; the reference channel receiving the light flux reflected from the outer surface of the exit slit of the measuring channel supplied with the outlet slit; imagers; the electronic unit; the executive actuating mechanism; recipients of the concentrate product and the tailings. At that the slits of the reference channel and the measuring channel are arranged coaxially and made adjustable. The technical result of the invention is the increased selectivity of the separation due to the more exact singling out of the Raman effect from the background noise.
EFFECT: the invention ensures the increased selectivity of the separation due to the more exact singling out of the Raman effect from the background noise.
3 cl, 5 dwg
FIELD: enriching or classifying of materials.
SUBSTANCE: method comprises transporting minerals as a multi-layered system, affecting the minerals by penetrating radiation that excites luminescence, recording light beam of luminescence from the side of penetrating radiation and from the opposite side, and separating the mineral comparing the results with a reference value. The transparency of mineral is additionally determined. The minerals are separated according their transparency to the penetrating radiation. The transparency of mineral is determined from the difference of logarithms or from the logarithm of the ratio of the light beams of mineral luminescence from the side of the exciting flux to that from the opposite side.
EFFECT: improved quality of separation.
2 cl, 3 dwg
FIELD: mining industry; methods of dressing of the mineral resources.
SUBSTANCE: the invention pertaining to the field of the minerals dressing, in particular, to the methods of of the radiometric separation of the ores, and may be used for separation of the fluorescent minerals. In the process of separation of the minerals conduct transportation of the minerals in the form of the monolayer stream of the being separated material, its irradiation by the penetrating radiation, registration of the intensity of the luminescent emission of the mineral from the side opposite to the incident stream of the penetrating radiation, comparison of the intensity with the preset threshold value and the subsequent separation of the useful mineral according to the outcome of the comparison. Additionally conduct registration and storage of the intensity of the luminescence of the air and change the threshold value proportionally to received value of the luminescent emission of the air. Irradiation by the penetrating radiation conduct the incident stream with the width larger than the width of the stream of the separable material; the intensity of the air and the mineral luminescent emission is registered under the flat angle (180°) or the blunt angle concerning the incident stream of the penetrating radiation. At that the air luminescent intensity is registered beyond the limits of the width of the stream of the separable material, and the intensity of the luminescent emission of the mineral is registered within the limits of the width of the stream of the separable material in the zone of the material irradiation and-or behind it along the material motion. The invention ensures the increased selectivity and the self-acting maintenance of the level of the separation, that allows to exercise the process of the separation of the minerals more efficiently.
EFFECT: the invention ensures the increased selectivity and the self-acting maintenance of the level of the separation, that allows to exercise the process of the separation of the minerals more efficiently.
2 cl, 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