Luminescent separator for of mineral raw materials dressing

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

 

The invention relates to the mining industry, and more particularly to diamond mining. The most successful it can be used by the search parties and small concentrators for the primary separation of diamonds.

It is known that at present the greatest application for final diagnosis of diamonds in concentrates almatadema ore received method of x-ray separation based on selective ability of diamond crystals luminesce under the action of x-rays. Generators of x-rays are x-ray tubes in which to obtain x-rays must use a voltage of the order of 25-30 kV. It is obvious that wiring power supply connecting the power supply of the separator and the x-ray tube, is in mortal danger for staff (see, for example, Miglani, Aphrodisia, Men and Vav "Enrichment diamond bedrock and sand". State scientific and technical publishing house of literature on Geology and subsoil protection, Moscow, 1961, S. 152).

The closest analogue of the claimed invention is x-ray separator, discussed in detail in the book Miglani, Aphrodisia, Men and WAV Enrichment diamond bedrock and sand", State scientific and technical publishing house of literature on Geology and subsoil protection, Moscow, 1961, S. 150-157). The separator contains the boot device feedstock, means for feeding raw material in the detection zone of the desired product, the x-ray tube associated with the source of her power, photomultiplier tube, a processing unit and control device separation of the desired product and a device separate collection required and tail products.

Electrobite device designed to power the x-ray tube current, high and low voltage, consists of a high voltage transformer and remote control.

High-voltage transformer applies to single-phase transformers stubble type. He has two coils of the primary and secondary windings and is enclosed in a metal tank filled with transformer oil. The end of one of the coils of the secondary winding (anode) is grounded, and the other (the cathode) is under high voltage. On top of the second (cathode) coil secondary winding is wound connected to it electrically connected to the third winding feeding the filament x-ray tube. This filament winding, also under high voltage, the included rheostat built into the transformer tank. Both ends of the filament coils are brought out through porcelain prob the ne transformer, located on the top cover of the transformer.

High-voltage transformer allows continuous load x-ray tube current force 10 milliampere at a voltage of 25 kV and a four-hour load at the same amperage and voltage of 30 kV. The weight of the transformer exceeds 40 pounds.

To connect the x-ray tube to the high voltage applied high-voltage cable with protection from penetration by the voltage up to 50 kV.

In the upper part of the x-ray separator having two cascade separation of the desired material, is the hopper, which is loaded feedstock. The hopper is a vibrator channel, feed raw material in the detection zone of the desired product. In this area is the x-ray tube located at an angle of 45° to the stream falling from the tray of raw materials. In the span of luminescent grains in the field of x-ray light pulse hits the photocathode photomultiplier tube located under an angle of 45° to the flow of material, but placed so that its axis is 90° with the axis of the x-ray tube. The multiplier has a block of information processing and management, where the electrical impulse is amplified and fed to the control device associated with the cutting cone, which changes its the position when in the flow luminescense grain and sends it to the Treasury for collection of the desired product. Returning to the place funnel directs the flow of material on the tray, the bottom of the separator unit having the same construction as the upper block, and working the same way. The remains of the original raw materials come in the collection of the tail product.

The separator extracts the luminescent grains from the feedstock. However, for the connection of x-ray tubes with a power source used for high-voltage cables that are dangerous for staff. In addition, the separator has a very large size and weight of 250 pounds, it can be used only in stationary conditions.

The present invention was used to develop the design of fluorescent separator for beneficiation of mineral raw materials in which the source of x-ray tube power would be made so that the separator avoid the need to use high-voltage cable for supplying a high voltage to the x-ray tube, passing through the surrounding separator space, and repeatedly dropped the weight and dimensions of the supply tube, which increases the safety of the separator and its portability.

The problem is solved in that in fluorescent separator for mineral raw materials containing the mouth of austo download feedstock, means for feeding raw material in the detection zone of the desired product, the x-ray tube associated with the source of her power, photomultiplier tube, a processing unit and control device separation of the desired product and a device separate collection required and tail products, what's new is that the power source of the x-ray tube includes an inverter mains voltage in low-voltage high-voltage, high-voltage transformer and a voltage multiplier, while the high-voltage transformer and a voltage multiplier, and the x-ray tube is placed in the filled high-voltage insulating substance sealed housing, one wall of which has an opening in which is hermetically fixed anode x-ray tube, the window for the passage of x-rays is outside the case.

Such constructive execution of the power source, as well as placement rentgenovskoi tube and visokokakovostnih tube and transformer in a sealed enclosure filled, such as transformer oil, provide the opportunity to directly apply a high voltage to the x-ray tube without the use of high-voltage cable passing through the airspace. And thereby achieve increased electroputas the spine and mobility separator.

Below the essence of the invention is explained in more detail with a specific example of implementation with reference to the accompanying drawing, which shows a block diagram of the inventive luminescent separator for mineral beneficiation.

Fluorescent separator for mineral beneficiation contains the device 1 load 2 pieces of source, for example, diamond-containing raw material, consisting of a feed hopper 3 and located underneath the feeder 4, such as vibration. Below the feeder 4 is an inclined chute 5 for feeding raw material in the detection zone 6 of the desired product. The tray 5 has a predominantly convex curvilinear shape of the parabola. In more detail the construction and advantages of this means for feeding raw material in the detection zone of the desired product discussed in an earlier application filed by the same applicant. In zone 6 the detection of the desired product are the x-ray source in the form of x-ray tube 7, and opposite it the photomultiplier 8.

To ensure operation of the x-ray tube 7 is used, the power supply consisting of transformer 9 mains voltage in low-voltage high-voltage, high-voltage transformer 10 and the high voltage multiplier 11 voltage.

Convert the user network voltage is designed to convert a sinusoidal voltage of 220 volts and a frequency of 50 Hz AC voltage of meander voltage of 60 volts and a frequency of 50 kHz with increasing front-voltage about 30-50 10-9s·. Structurally, such a Converter is implemented on the basis of known circuits and has very small dimensions.

High-voltage transformer 10 is designed to improve high-frequency voltage Converter 9 with 60 volts to 6.0 kV. The transformer 10 is made on a closed ferrite core magnetic permeability of the order of 3000 that allows you greatly reduce weight and dimensions compared to the prototype (for simplicity not shown).

The multiplier 11 voltage is assembled on a high-voltage diodes and capacitors. It is made well-known scheme (for simplicity not shown) and contains 6 stages of multiplication, each of which consists of 2 diodes and 2 capacitors (3 cascade at one side, and between them included the secondary winding of the high voltage transformer 10). The multiplier 11 is designed to convert a voltage of the meander output high voltage transformer 10 into a DC voltage of up to 42 kV applied to the cathode ray tube 7, the anode of which is grounded.

High-voltage transformer 10, the multiplier 11 and the x-ray tube 7 is placed in the hermetic grounded housing 12 filled high-voltage insulating substance, such as transformer oil or insulating gas In one wall of the housing 12 has an opening, which is hermetically fixed anode x-ray tube 7 with a window 13 for the passage of x-rays, protruding outside the housing 12. In another wall of the housing 12 is fixed airtight low voltage connector 14 for connection of the Converter 9 mains voltage. The output voltage of the multiplier 11 is connected directly by means of soldering with the panel of the cathode ray tube 7. As a result of such decisions in the inventive separator is missing any items that are under high tension, which is available to the service personnel that makes the separator electrically safe. In the housing 12 posted by isolating transformer (not shown) to supply heat to the cathode x-ray tube 7. He isolates the low voltage circuit of the heat from the Converter 9 from the high voltage applied to the cathode. When this is filled with transformer oil body 12 with all reside on the device weighs only a few kilograms, which provides mobility separator.

Under area 6 locate the product is a device 15 separation of the desired product, which can be used in any Electromechanical devices, which are discussed in detail by the applicant in the previously filed application or any other known electromechan the ical device. The device 15 branches associated with the device 16 separate collection required and tail products, consisting of a cover-trap 17 for the desired product and separated from it by a dividing wall 18 of the compartment 19 to the tail of the product. All devices and units of the separator is provided by the device 20 automatic control of the separator.

The separator operates as follows.

When turning on the separator from the network to the Converter 9 receives a sinusoidal voltage of 220 volts at 50 Hertz, which it converts the AC voltage of the meander voltage of 60 volts and a frequency of 50 kHz, with the growth front voltage 30-5010-9sec. From the Converter 9, the converted voltage is supplied through a low-voltage connector 14 of the housing 12 to the input of the high voltage transformer 10. It increases the voltage to 60 volts to 6.0 kV. With the secondary winding of the high voltage transformer 10, the voltage of the meander is supplied to the multiplier 11, where its transformation into a direct voltage up to 42 kV, which is applied to the cathode ray tube 7. The filament voltage on the cathode of the x-ray tube is supplied via an isolating transformer from the low-voltage connector 14.

In the hopper 3 boot device 1 sleep diamondiferous ore from the shock of her pieces 2 are received in the feeder 4. From the feeder 4 pieces 2 are served on the initial part of the tray 5 and roll it down. After the initial contact with the tray 5 pieces 2 have minor differences trajectories. While the insignificance of the dispersion of trajectories 2 pieces of raw materials as you move it across the tray convex parabolic shape is maintained. Consequently the uniformity of its distribution in the detection zone 6 in the form of a continuous monolayer of pieces 2, moving along stable trajectories. When this x-ray tube 7 is uniformly pervades all space zone 6 in the direction of the photomultiplier 8. It provides a clear fixation of the photomultiplier 8 luminescence of all diamonds that are present in the feedstock. When the luminescent flash diamond in zone 6, the signal from the photomultiplier tube 8 is converted to the device 20 of the control command on the operation of the device 15, the separation of the desired product. When the alarm device 15 diamond goes into the Bay-trap device 17 16 separate collection required and tail products. Not y the 2 pieces of ore are sent by the device 15 into the compartment 19 to the tail of the product.

From the specific embodiments of the claimed invention for any specialist in this field are obvious possibilities for its realization with odnovremennym solution of the problem. It is also obvious that the invention can be made small changes, but which will not go beyond their limits defined by the following claims.

The inventive separator is easy to implement. It is fully electrically safe for staff. Its mass is slightly higher than ten pounds. The separator is highly efficient and reliable in operation. He can find the widest application in the search for deposits of diamonds and the enrichment of the source material in the field and at small concentrators.

Fluorescent separator for mineral raw materials containing the boot device feedstock, means for feeding raw material in the detection zone of the desired product, the x-ray tube associated with the source of her power, photomultiplier tube, a processing unit and control device separation of the desired product and a device separate collection required and tail products, characterized in that the power source of the x-ray tube includes an inverter mains voltage in low-voltage high-voltage, high-voltage transformer and a voltage multiplier, while the high-voltage transformer and a voltage multiplier, and the x-ray tube is placed in the filled you ecosoltm insulating substance sealed housing, one wall of which has an opening in which is hermetically fixed anode x-ray tube, which for the passage of x-rays is outside the case.



 

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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

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