Method for softening and disintegration of argillaceous sands of gravel deposits

FIELD: mining industry, possible use during extraction of natural and man-made gravel deposits of both mineral resources of high density (gold, platinum, etc), and valued minerals of low density.

SUBSTANCE: method for softening and disintegration of argillaceous sands of gravel deposits includes driving a water-feeding trench, driving a water-collecting trench in 80-100 meters along direction of fall of deposit bed in parallel to water-feeding trench, depth of water-collecting trench providing for difference of bottom levels in trenches 1,5-3 meters, filling water-feeding trench with water and recharging it to maintain constant water level by means of gate and spillway with raised spillway gate, building walling dam 1-1,5 meters high, limiting the part of deposit being processed in plan, with spillway, after that outputs of filtration flow into water-collecting trench are constructed which are fixed by wetting of upper slope for height of 1-2 meters, then spillway gate is lowered onto spillway spine, and that part of deposit is flooded with water for depth of 0,8-1,3 meters and this level is maintained for initial softening of argillaceous sands of gravel deposits, after that dredger plant is assembled, consisting of suck-in line with suction device, dredger itself and force sludge duct. At the end of force sludge duct, vortex generator is mounted together with hydrodynamic cavitator, due to which during launch of operation of dredger plant argillaceous sands of gravel deposits along the way from face and suction device of dredger to hydrodynamic cavitator are subjected to second stage of softening and disintegration, and in hydrodynamic cavitator - to third-stage final disintegration, and then are dispatched to dressing plant.

EFFECT: increased productiveness and extraction efficiency during extraction of natural and man-made gravel deposits due to efficient softening and disintegration of argillaceous sands of gravel deposits and release of valued components during hydro-transportation of sands to dressing equipment.

2 dwg

 

The invention relates to the mining industry and can be used in the development of natural and technogenic placer mineral deposits as high density (gold, platinum and others), and valuable minerals of low density.

The known method of disintegration of sand, based on the integrated effects of freezing, the water-cut of the rock mass in the winter and subsequent defrosting breeds in spring and summer, which leads to the destruction of the clay fractions and release particles of valuable components [1].

There is also known a method of disintegration clayey Sands, consisting in the complex influence of natural factors on the particle, including the turbulent pulsations of velocity and pressure filtration the water flows and the alternating voltage arising from the freezing-thawing of rocks, as well as seismic waves earthquakes of small capacity [2].

The disadvantages of both methods are low intensity disintegration of the aggregated particles and the stretching process in time (up to several years from the beginning of the training placers to direct development).

The known method disintegration sand placers with washing barrels dredging and scrubbing type [3]. In washing barrels dredging type of disintegration and grohote the ia combined, what is the main disadvantage of this disintegration of the equipment, because the design parameters to ensure the effectiveness of processes of disintegration and screening separately, differ significantly from each other. In washing barrels scrubber type disintegration and screening divided, however, are not sufficiently effective. As noted in the same source (p.45), partial softening and disintegration of the Sands can occur when hydrotestosterone recent pressure on the slurry pipeline.

Closest to the claimed method is the processing of alluvial gold small classes before enrichment, including mechanical treatment of the sample in the aquatic environment using hydrodynamic cavitation reactor with the number of cycles from 1 to 70 [4].

This method may be satisfactory for evaluation purposes only, the content of fine gold in the alluvial Deposit. If it used as an element in the manufacturing process of extraction and beneficiation of rock mass, it becomes obvious disadvantages: the need for allocation of the total volume of the rock mass of the small sample size, batch processing of Sands with unknown number of cycles crossing the cavitation reactor and, consequently, low productivity with the person, entails and low productivity of the whole technological process.

The purpose of the proposed invention consists in the improved performance and the degree of extraction, including small and fine fractions, when developing natural and man-made gravel deposits due to effective softening and disintegration of clay sand gravel deposits and freeing up valuable components in the process of hydraulic sand processing equipment.

This objective is achieved in that in the method of softening and disintegration of clay sand gravel deposits, including the sinking vodozabornoy trench through 80-100 m in the direction of drop formation field parallel vodozabornoy trench - the driving of the drainage trench depth, providing a height difference of the bottom of the trench of 1.5-3 m, water filling vodozabornoy trench and refill it to maintain a constant water level by using the gate and spillway with a raised spillway gate, construction of the tailings dam height of 1.0-1.5 m limiting in terms of the developed part of the placers, with spillway after the release of seepage flow in the drainage trench that is fixed by soaking top of the slope to a height of 1-2 m, the lowering of the crest of the Weir spillway gate, flooding of this part of Ross the PI water to a depth of 0.8-1.3 m and maintain this level in subsequent to initial softening clay sand gravel deposits, installation zemsnaryad installation, consisting of a line with a suction device, the actual dredge and pressure of the slurry line, at the end of the last set videobrothel and hydrodynamic cavitator, when you start zemsnaryad installation clayey Sands of alluvial deposits on the way from the bottom and sasiyvarulo device dredger to hydrodynamic cavitator undergo the second stage of softening and disintegration, but in hydrodynamic cavitator - titlestring final disintegration, and then forwarded to the beneficiation plant.

The invention is illustrated by drawings, where figure 1 shows a plan of a polygon man-made deposits, primarily spent dredging method, with mining facilities and dredge, figure 2 - videobrothel.

Polygon 1 technogenic placer deposits presents Gale-afilename dumps 2. The length of the ground place the overburden dumps 3. On the developed polygon 1 pass vodozabornoy trench with the gate 5 and the overflow 6 overflow gate 7 and the drainage trench 8 at 80-100 m from vodozabornoy. In vodozabornoy trench 4 with the stopper 5 and the overflow 6 overflow gate 7 serves water, resulting from vodozabornoy trench 4 is installed filtration flow in the catchment t is the ANSA 8 and is the primary loss of strength of the lower layer placers, below the depression surface. Erect tailings dam 9 and 10 with the Weir 11 and, after filtration stream on horseback slope drainage trench 8, flood water to the entire polygon 1. This is called the primary softening layer of clayey Sands above the depression surface seepage flow, and the continuing softening of the lower layer, depression below the surface. Then mount zemsnaryad unit consisting of suction line 12 with the suction device 13, the dredger 14 and pressurized slurry line 15 installed at the end of videobrothel 16 and hydrodynamic cavitator 17. When you start zemsnaryad installation in the work during the movement of clayey Sands from the bottom to the cavitator work in secondary softening and disintegration, and when passing through the cavitator, which develop local pressure of several hundred megapascals [5, s], - TradeStation final disintegration of clay sand gravel deposits.

The method is as follows. On the developed polygon 1 with Gale-afilename the 2 dumps and overburden dumps 3 are vodozabornoy trench 4, set the shutter 5 and the overflow 6 overflow gate 7. At 80-100 m from vodozabornoy trench 4 cut Wadesboro the trench 8. Mark the bottom in vodozabornoy trench 4 must be 1.5-3 m greater than the level of the bottom of the drainage trench 8. Vodozabornoy trench 4 through the shutter 5 is filled with water and supported through the spillway at 6 raised spillway gate 7. Then the contour of the developed polygon 1 erect tailings dam 9 and 10 with a height of 1.0-1.5 m limiting in terms of the developed part of the placers, with Weir 11. Between vodozabornoy trench 4 and a drainage trench 8 is installed filtration flow, resulting in the initial softening of the lower layer placers, depression below the surface. After the release of seepage flow on horseback slope drainage trench 8, which is fixed on znachimosti top of the slope to a height of 1-2 m lower on the crest of the Weir 6 spillway gate 7 and flood water to the entire polygon 1, resulting starts primary softening layer of clayey Sands above the depression surface seepage flow, and the continuing softening of the lower layer, depression below the surface.

Mount zemsnaryad unit consisting of suction line 12 with the suction device 13, dredger 14 and the pressure of the slurry line 15 installed at the end of videobrothel 16 and hydrodynamic cavitator 17. P is and start zemsnaryad installation in the work during the movement of clayey Sands from the bottom to the cavitator carry out their secondary softening and disintegration, and when passing through the cavitator - TradeStation final disintegration of clay sand gravel deposits.

The proposed method differs from the known increase of productivity and the degree of extraction, including small and fine fractions, when developing natural and man-made gravel deposits due to effective softening and disintegration of clay sand gravel deposits and freeing up valuable components in the process of hydraulic sand processing equipment. If this method does not require significant additional power costs not associated with a reduction in the volume of processed clayey Sands, and, given the high degree of extraction of valuable components, allows you to perform remediation work in a single technological cycle, thus reducing the overall negative impact of mining operations on the environment.

The use of the proposed method of softening and disintegration of clay sand gravel deposits allows to improve the completeness and quality of extraction of valuable components from placers with different fractional composition developed the rock mass.

Sources of information

1. Shyla N.A. basis of the doctrine of the placers. M.: Nauka, 1981, 283 S.

2. Patent RU No. 2147684. Litvintsev B.C., Mamaev Y.A. and other Publ. 20.04.2000. BJ is. No. 11.

3. Bogdanov E.I. Equipment for transport and washing of the placers. M.: Nedra, 1978, pp.163, Fig 64.

4. Uskov N.N., Stashenko B.A. Method of processing alluvial gold small classes before enrichment. RF patent №2012417. Publ. 15.05.94. Bull. No. 9.

5. Basta T.M., S. Rudnev and other Hydraulics, hydraulic machines and hydraulic actuators, Meters: machinery, 1982, 423 S.

Method of softening and disintegration of clay sand gravel deposits, including the sinking vodozabornoy trench through the 80÷100 m in the direction of drop formation field parallel vodozabornoy trench - drainage trench depth, providing a height difference of the bottom of the trench is 1.5÷3 m, water filling vodozabornoy trench and refill it to maintain a constant water level by using the gate and spillway with a raised spillway gate, construction of the tailings dam height 1÷1.5 m limiting in terms of the developed part of the placers, with Weir, after the release of seepage flow in the drainage trench, that is fixed on znachimosti top of the slope to a height of 1÷2 m, lowering the crest of a spillway spillway gate, flooding of this part of the mash water to a depth of 0.8÷1.3 m and maintain this level in subsequent to initial softening clay sand gravel deposits, installation zemsnaryad the installation, consisting of suction with a suction device, the actual dredge and pressure of the slurry line, characterized in that the end pressure of the slurry line set videobrothel and hydrodynamic cavitator, which allows start-up in operation zemsnaryad installation clayey Sands of alluvial deposits on the way from the bottom and the suction device dredger to hydrodynamic cavitator undergo the second stage of softening and disintegration, but in hydrodynamic cavitator - titlestring final disintegration and then forwarded to the beneficiation plant.



 

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