Method of reclamation of tailings waste from water-soluble

 

(57) Abstract:

The invention relates to the mining industry and can be used for storing water-soluble waste, such as waste potash production (Solodov). Technical result: the possibility of erecting a high-rise hydraulic fill tailings by a weak base and reduced cost of returning the carrier liquid for the preparation of the pulp. The method includes the preparation of pulp using saturated brine as the carrier fluid and the direction of sand on a bed of Solombala. Alluvium tailings carried out using a hydrocyclone mounted on the end of the pipeline. Drain hydrocyclone is sent directly to the mixer, to which is added the unsaturated brines, and the volume of the latter is sufficient for dissolving the solid phase, located in the junction of the hydrocyclone. On a bed of Solombala direct Sands of the hydrocyclone. 1 Il.

The invention relates to the mining industry and can be used for storing water-soluble waste, such as waste potash production (Solodov).

There are two ways of stacking colodado: dry - through conveyor trajectory, and always let the pulp.

In the dry method of storing the salt dumps have a great height (100 m) and occupy a smaller area. When the hydraulic method salaatul has less height and more.

However, in the dry method of storage under salaatul required base with solid ground, and when the hydraulic - based may be less strong (weak). In addition, alluvium hydraulic tailings cheaper compared to landfilling solid slothdom.

The dry method is used in the European potash companies, and hydraulic - canadian.

There is a method of filling Solombala potash companies using cranes by frontal pouring in bringing the height of the blade up to 100 meters. Transshipment nodes are installed on the surface or directly on soleuvre. (Manual for the development of salt deposits /Perm R. S. , Kovalev, O. C., Pinsky C. L. - M.: Nedra, 1986, S. 188-190).

However, this method is feasible only on a firm soil Foundation, in addition, it requires significant financial costs on hardware and electricity.

Closest to the proposed invention Technology: Proceedings of the 1stInternational Potash Technology Conference, Saskatoon, Sask., Canada, October 3-5, 1983, p. 787-792).

However, in this case for the filing of carrier fluid from a tailings need a pump with a high head, and the length of the pipeline, because usually the carrier liquid for the preparation of pulp supplied from the header of the tailings, which have the lowest point of the pond.

The technical result of the invention consists in the possibility of erecting a high-rise hydraulic fill tailings by a weak base and the reduced cost of returning the carrier liquid for the preparation of the pulp.

This technical result is achieved in that in the method of tailings reclamation of water-soluble waste, comprising preparing a slurry using saturated brine as the carrier fluid, the direction of sand on a bed of Solombala, alluvium tailings carried out using a hydrocyclone mounted on the end of the pipeline, while the drain of the hydrocyclone is sent directly to the mixer, to which is added the unsaturated brines, and the volume of the latter is sufficient for dissolving the solid phase, located in the junction of the hydrocyclone, and the couch of Solombala napravlyayeshsa scheme for reclamation of tailings from waste water-soluble, for example waste of potash production.

The method is as follows.

Dehydrated Soledad on otvarnomu conveyor 1 are added into the mixer 2, in which a variety of brines, namely, the drain of the hydrocyclone and brines from the process. The brine discharge hydrocyclone salts and their interaction with lileokalani they do not dissolve. Brines from the process is not saturated with salts.

The resulting slurry groundwater pump 3 is fed into the hydrocyclone 4, mounted on the slope of Solombala. The installation height of the hydrocyclone provides accommodation for a specified amount of slothdom. In the hydrocyclone slurry is classified (thickens). Sands sent on a bed of Solombala 8 alluvial array 9, and plums containing fine particles, is directed into the sump 5 and the pump 6 return to the mixer 2 for the preparation of the pulp. To compensate for the volume of the brine, leaving with the sand in the mixer 2 serves unsaturated salt brines from the process (sewage). The flow of wastewater provides the dissolution of colodado, located at the junction of the hydrocyclone and eliminates circulating load solid.

Pulp coming on the sole is the same. The dam holds the brine, forming a pond 13. In pond 13 brine is clarified and through the drain wells 10 enters the drain pipe 11, is laid in the dam. As reclamation of the protective dam build by using a bulldozer reclaimed lileokalani. Increasing also and drain wells.

The brine from assolombarda 14 pumped into the slurry tank (pit groundwater pump 16 mounted on the dam of assolombarda 15. From field brine pumped to the factory for use in the enrichment process.

The proposed method hydraulic reduces the cost of disposal of waste resulting from the reduction of energy costs and the pipeline. The power consumption is less because the return drain of the hydrocyclone in the mixer is from the point of tailings, which has the hydrocyclone, and the return of assolombarda must be made from a low point. Therefore, to supply the drain of the hydrocyclone in the mixer requires a pump with a significantly lower pressure than the feed brine from assolombarda tailings. In addition, in the proposed method, the cost of the pipeline is less, because the length of the pipeline to supply the drain of the hydrocyclone less than for filing trebuetsya pump with half the pressure (0.4 MPa instead of 0.8 MPa) and shorter length (800 m instead of 2400 m).

Method of tailings reclamation of water-soluble waste, comprising preparing a slurry using saturated brine as the carrier fluid, the direction of sand on a bed of Solombala, characterized in that the alluvium tailings carried out using a hydrocyclone mounted on the end of the pipeline, while the drain of the hydrocyclone is sent directly to the mixer, to which is added the unsaturated brines, and the volume of the latter is sufficient for dissolving the solid phase, located in the junction of the hydrocyclone, and the couch of Solombala direct Sands of the hydrocyclone.

 

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FIELD: isolation and neutralization of burial of hazardous matters on the bottom of water basins.

SUBSTANCE: method is based upon limiting contact of hazardous matters with water by means of covering them with loose material. Accumulations of hazardous matters washed out at bottom ground from metal tanks are neutralized by means of covering with crushed shale. Preferably the hazardous matters on the bottom which matters accumulate in metal vessels, missiles, bombs and in cases of sunken vessels should be covered with crushed aluminosilicate before being covered with crushed shale.

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FIELD: processing of condensed hazardous substances and industrial wastes and safe storage of powdered, granulated or liquid hazardous and toxic substances which are chemical wastes, including pesticides, toxic chemicals, defoliants, dangerous compounds of heavy metals, war toxins etc, which are unfit for further utilization.

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EFFECT: increased efficiency in immobilization and safe storage during period of time ranging between several months and dozens of years of gel-like mineral-matrix system of comparatively wide class of hazardous, toxic or other hazardous substances in powdered, granulated or liquid state.

2 cl, 8 ex

FIELD: destruction and preliminary salvaging of armament and military equipment.

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4 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: invention refers to recovery and processing of household rubbish with extraction of useful utility components and can be used at operating rubbish incineration and sorting plants and other productions processing secondary raw materials. Device for primary sorting of household rubbish includes vibrating screen divided into sections with holes for rubbish screening, in the inlet part of which there is the device for cutting bags, breaking cardboard and plastic packings. Vibratory screen is made in the form of belt-type vibrating conveyor having a rolling grid dividing the flow of vibrating conveyor into the above-grid zone and bottom zone. Vibrating conveyor is located in the housing having a multi-level partition separating the vibrating conveyor from assembled hoppers and dividing it into sections. The more the distance of inlet part of vibrating conveyor, the less the height of levers is. Multi-level partition is installed with an inclination towards assembled hoppers at an angle of 20-25 to vertical. On opposite side of vibrating conveyor tray to each of its sections there connected are ventilation ducts from forced-draft plant. Device is equipped with exhaust ventilation system, disinfection system, fire protection deluge plant.

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