RU2228796C2 - Mobile line for grading and roentgenoradiometric separation of ores and technogenic raw materials - Google Patents

Abstract

FIELD: mining; ores enriching and to other industries. SUBSTANCE: the invention presents a mobile line for grading and roentgenoradiometric separations of ores and technogenic raw materials and it is pertinent to mining, ores enriching and other industries, that process ores and technogenic raw material from dumps. The technical result is improvement of quality of separation of lumps with the foreign inclusions, for example, clay without precleansing and operation of the separator with oscillating conveyers without origination of resonance effects, reduction of non-productive losses of time, increase of productivity and technological effectiveness of separation. The line contains the following made with capability of motion and installed on the movable supports equipment: a feed hopper, a grading sifter, feed conveyors and a roentgenoradiometric separator with a vibrating conveyorhandler. The roentgenoradiometric separator is installed on a movable platform with a wheel chassis and supplied with additional rigid collapsible supports with the bearing surfaces made in the form of the transportation skis. The rigid supports are linked with the skis through a system of hinges and supplied with nuts linked with a thread rod having different direction threading. The skis are additionally fused to the platform by removable jibs. EFFECT: the invention allows to improve the quality of separation of lumps with the foreign inclusions, to operate the separator with oscillating conveyers without origination of resonance effects, to reduce the non-productive losses of time, to increase productivity and technological effectiveness of separation. 4 cl, 3 dwg

Description

The invention relates to mining, processing and other industries involved in the processing of ores and minerals from dumps and tailings.

When processing ore and man-made dumps and ore mining by various methods at small and remote deposits, sites using the separation of crushed raw materials, the role of rational placement and selection of equipment to reduce transport and operating costs, increase the convenience of maintenance and operation of technological equipment increases. The solution to these problems is possible using mobile lines with the ability to quickly move around the technological site, in the quarry, between different quarries and dumps of raw materials to solve the problems of qualitative and quantitative separation by the X-ray radiometric method. During X-ray radiometric separation, vibration-transporting ore feeding devices are used, initiating the resonant effects of the separator as a whole when the latter is installed on pneumatic wheels. To eliminate resonance effects, stiff separator supports are required.

Known crushing and sorting line, containing a head screen installed in front of the crushers with rows of screens, a subsequent screen, a dust extraction apparatus, communications and a product receiving unit, the subsequent screen being made with a number shifted down by the number of crushers, installed at the end of the line and connected by a lower cavity with the receiving unit of the product, while the input of the first crusher is connected to the top screen of the head screen, and the inputs of the subsequent crushers are connected to two identical screens of screens, while the output of each crusher and the bottom floor the head screen is connected to the outlet of the dust extraction apparatus, and the output of the latter is connected to the output of the subsequent screen (AS USSR No. 1646602, BI No. 17, 1991).

The well-known crushing and screening line provides only stationary use in the processing of dumps and cannot be used for the separation of ore or minerals according to the content of the useful component.

Known self-propelled crushing and screening plant containing a support frame mounted on pneumatic wheels, and mounted on it a hopper with a feeder-screen, crusher, vibrating screen, conveyor system, while the support frame is made of two trusses connected to each other articulated, one of which is made with a sub-bunker heel on the console of the inclined part, and the bunker axle of the pneumatic wheels is made with the possibility of movement by hydraulic cylinders along the guides located on the inclined part (AS USSR No. 443681, BI No. 35, 1974).

The known installation does not allow the separation of dumps with the separation of ore according to the content of the useful component and cannot be used for any separation methods using vibratory conveyors due to the possibility of resonance effects without rigid support.

Closest to the claimed one is a line for automatic ore sorting, comprising a feed conveyor with a unit for automatically determining the average grade of useful component in ore and a distribution conveyor with discharge into hoppers with gates and a control unit for the discharge device, while the device is equipped with a flow switch with a block control, a sensor for the amount of ore in the bunkers, a control unit for bunker valves on each section of the bunker, while the sensors for the amount of ore are connected to the inputs of the control units of the bunker locks, the discharge device, the flow switch and to the control inputs of the automatic determination of the average content of the useful component in the ore, the output of which is connected to the input of the control unit of the discharge device (AS USSR, No. 816551, BI No. 12, 1981).

The known device does not provide high quality sorting of ore from dumps, cannot be used in a mobile version, which involves significant transportation and handling costs.

The problem solved by the invention is to increase the manufacturability and quality of x-ray radiometric sorting of ores and minerals from dumps, reducing the complexity of the operations of transportation and handling operations and preparatory work in difficult terrain.

The problem is solved in that in a mobile line for sorting and X-ray separation of ores and technogenic raw materials, including a receiving hopper, a screen and feed conveyors arranged with the possibility of movement and mounted on movable supports, an X-ray radiometric separator with a vibrating conveyor-laying out according to the invention, an X-ray radiometric separator is installed on a platform with wheeled chassis and is equipped with additional rigid folding supports with supporting surfaces made in the form of conveyors ski skis connected to rigid supports through a hinge system and provided with nuts in connection with a threaded rod, while the skis are additionally connected to the platform by retractable jibs, and the threaded rod is made with multidirectional thread at opposite ends of the rod.

Comparative analysis with the prototype shows that the claimed solution is characterized in that:

- an X-ray radiometric separator is installed on a platform with a wheeled chassis (which allows you to "gently" transport the separator over considerable distances without dismantling instruments and equipment with the readiness for the latter to function);

- the separator is equipped with additional rigid folding supports (which allows you to quickly install the separator platform in a horizontal position with complex terrain without special supporting platforms);

- rigid folding supports are made with supporting surfaces in the form of transport skis (which allows you to reliably base the supports and after processing the section to move the separator in the flank direction without maneuvers on the wheels);

- rigid supports are connected to the skis through a system of hinges and equipped with nuts in connection with a threaded rod (which provides quick introduction into the working position of the supports with adjustment of the horizontal position of the platform and compact position of the latter during long-distance transportation on wheels);

- the skis are additionally connected to the site by retractable jibs (jibs provide structural rigidity during flank transportation on skis);

- the threaded rod is made with multidirectional threads at opposite ends of the rod (which ensures the simultaneous convergence or divergence of the hinge joints with a change in the height of the supports.

Thus, the claimed solution meets the criterion of "novelty."

Comparison of the proposed solutions with analogues did not allow to identify in them the signs that distinguish the claimed solution from the prototype, which allows us to conclude that the criterion of "inventive step".

The invention is illustrated by drawings, where in Fig.1 is a General view of the line from above, Fig.2 - x-ray separator; figure 3 is a view along arrow A is the design of rigid folding supports.

The mobile line for sorting and X-ray radiometric separation of dump waste and raw materials contains: a hopper-feeder 2 mounted on mobile supports, a screen 3 and conveyors 4, 5, 6, 7, 8, an x-ray radiometric separator 9, a vibrating conveyor-spreader 10 installed on platform 11 with wheeled chassis 12, rigid folding legs 13, transport skis 14, hinges 15, threaded rod 16, nuts 17, retractable jibs 18, threaded rod lever 19.

Mobile line sorting and x-ray separation works as follows.

On the surface of the blade to be machined, in a technological sequence, 1 hopper-feeder 2, a screen 3, conveyors 4, 5, 6, 7, 8 are installed on a movable support by moving on a movable chassis 12; due to the rotation of the lever 19 of the threaded rod 16 by means of nuts 17 and hinges 15 of the ski 14 are installed in the working position so that the wheeled chassis 12 with the platform 11 rise above the worked surface of the blade and then the separator 9 is on rigid supports 13 at a height according to the surface topography of the blade with a horizontal location of the platform 11 and a given angle of the vibrating conveyor-spreader 10. The jaws 18 are fixed on the sides of the platform 11 at one end and the other on skis 14, which provides additional structural rigidity. The waste rock or mineral raw materials are loaded into the hopper-feeder 2 with subsequent feeding through the conveyor 4 to the screen 3. After screening, the fine fraction is removed from the process by the conveyor 6, and the separated fraction through the conveyor 5 is fed through the intermediate hopper to the vibration conveyor-feeder, followed by separation into X-ray radiometric separator 9 into two streams - with a high content of the useful component and movement on the conveyor 7 and the waste stream - on the conveyor 8. After working out the technol At the site, the mobile X-ray separation line is moved in the flank direction by winches or tractors to a technologically optimal distance with periodic repetition of the cycle.

If necessary, long-distance relocation platform 11 is lowered to the chassis 12 with the reduction of the rigid supports 13 and skis 14 in a compact position.

A mobile line for sorting and X-ray radiometric separation in the development of ore dumps and dumps of mineral raw materials ensures high-quality separation of pieces with foreign inclusions, such as clay, without preliminary washing, the operation of the separator with vibrotransporters without the occurrence of resonance effects, reduces non-production time losses, increases the productivity and manufacturability of separation.

Claims (4)

1. A mobile line for sorting and X-ray separation of ores and technogenic raw materials, including a hopper-feeder, screen and feed conveyors, made with the possibility of movement and mounted on movable supports, an X-ray radiometric separator with a vibrating pick-up conveyor, characterized in that the X-ray radiometric separator is installed on a platform with wheeled chassis and is equipped with additional rigid folding supports with supporting surfaces made in the form of transportation skis. 2. The line according to claim 1, characterized in that the rigid supports are connected to the skis through a system of hinges and equipped with nuts in connection with a threaded rod. 3. The line according to claim 1, characterized in that the skis are additionally pivotally connected to the platform with retractable jibs. 4. The line according to claim 2, characterized in that the threaded rod is made with multidirectional threads at opposite ends of the rod.

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