SU784913A1 - Method and apparatus for separating grain materials by size and density - Google Patents

Description

t.

 The invention relates to the field of mineral separation by jigging and can be used in the mining industry and construction.

There is a method of enrichment of ores in terms of density and size of the deposit, which includes the operation to create pulsations of the aquatic environment with the help of compressed air 11.

The disadvantage of this method is the need to expend energy on the production of compressed air.

Also known is the method of separating the spontaneous materials by density and coarseness, which consists in feeding the source material into the working chamber and separating it in density and coarseness into the upward-descending flow of the medium followed by unloading into collections of heavy and light products carried out in a device that includes a working chamber with a double bottom, top-; from which it is made in the form of a sieve, loading and unloading devices 2.

The disadvantage of this method is the need for energy costs for the production of water pulsation and the limited possibility of the process extensification.

The aim of the invention is to reduce the cost of the separation process and its extension by using surface water waves. five . This goal is achieved due to the fact that the working chamber is rigidly fixed at the surface of the water, and the receiving chamber is installed with the open part towards the reservoir, and the collectors of separation products, the receiving and working chambers are filled with water, and also due to the fact that the discharge window of the working chamber placed below the water level, as well as the fact that the device is equipped with a receiving chamber mounted on the extension of the bottom of the working and equipped with a baffle plate in the upper part, and the receiving chamber is made with a decreasing section c) side working chamber.

FIG. 1 shows a device for carrying out the method, general view; on .fig. 2 is a plan view.

The device contains a working chamber 25 1 with a lattice bottom 2 and a solid bottom 3. The working chamber is communicated at the sublattice part through the throttling device 4 with the receiving chamber 5. The receiving chamber 5 is formed from below by the continuous solid bottom of the 3. working chamber .1.

from above by the baffle plate b, from the sides by the side walls 7, at the same time, OTKpbiToJi is filled with the side opposite to the throttling device and married to it. In front of chamber 1 there are collections 8, for heavy (large) and 9 for light (fine) products. Collection 8 for the t helium product communicates with working 1 through discharge port 10, and collection 9 for light product communicates with working fi chamber 1 via drain threshold II and chute 12.

Above chamber 1 is installed the hopper 13.

Before operation, the device is installed on the coast (overpass and other j5 floating structures) 14 of the reservoir 15, so that the bottom 3 of the chamber 1 is rigidly fixed at the surface of the water, and longitudinal - the axis of the device is parallel to the coast 14. At the same time, the device so that the collections of 8 tons of yellow and 9 light products are located on the shore, and the receiving chamber 5 with the open part is directed toward the reservoir. In the installed device, chambers 1 and 5 and collections 8 and 9 of the products are filled with water, so that the water level in them is higher than the discharge port 10. This ensures that the device operates at a wave height of 30

A prerequisite for the operation of the proposed device is the presence of stormy weather when surface waves of the required height are formed.

When descending the device is a camera. 1 is filled from the hopper 13 with a separation material. The thickness of the working layer in the chamber 1 is controlled by the height of the threshold 11 for removing the light (fine) Q product. Wave 16 of the reservoir, foray into the runway, enters the receiving chamber 5, and then through the throttling device 4 into the sublattice part of the working chamber 1 and then through the sieve 2 into the chamber 1, creating a sunrise in it 1 45 Units stream with a speed sufficient for raising and loosening the material. At the same time, the material is divided so that heavy (large) particles sink on sieve 2, stretching out e2 50 lighter (smaller) particles to the upper part of chamber 1. Rolling back, wave 16 creates downward flow in chamber 1, sealing material for example pebbles. Due to a certain 55 periodicity of wave formation, the cyclic junction regularly repeats, creating process continuity, and the yellow fractions, as they accumulate in chamber 1. are loaded through an adjustable window

10 into the collection 8. Light fractions are discharged through the threshold 11 and 12 along the gutter are put into the collection 9 of the light product. 1cz of collections 8 and 9, products are removed by any method (for example, a grab crane) as needed.

The regulation of the amplitude of the pulsations and the jigging mode is generally carried out with the help of the choke device 4 by changing its hydraulic resistance and, therefore, the amount of water entering the receiving chamber 5 into the working chamber 1.

formula of invention

Claims (4)

1. A method of separating granular materials according to density and size, consisting in feeding the starting material into the working chamber and separating it in density and size in ascending-descending fluxes of the medium followed by unloading in the collection of heavy and light products, characterized in that In order to reduce the cost of the separation process and its extensification due to the use of surface waves of reservoirs, the working chamber is rigidly fixed at the surface of the water, and the receiving chamber is installed with the open part towards the reservoir, and orniki separation products, and receiving a working chamber filled with water. g 2. The method according to Claim 1, which means that the unloading window of the working chamber is placed below the water level. 3. An apparatus for carrying out the method according to Claims 1 and 2, comprising a double bottom working chamber, the top of which is in the form of a sieve, loading and unloading devices, characterized in that it is provided with a receiving chamber connected to the working chamber by means of a throttling device, This Hpii: emny chamber is installed on the extension of the bottom of the working chamber and is provided with a baffle plate in the upper part. one. 4. The device pop. 3, is different from the fact that the receiving chamber is discharged with a decreasing cross section towards the working chamber. Sources of information taken into account in the examination 1. The patent of the Federal Republic of Germany 1558943, kl.1a-3, published. 1970. 2. Authors certificate of the USSR 515535, cl. B 07 B 1/40, 1972./ / " 9 Ll } 6 / IS 13 7 Coast Water