Water-saving tailing discharge method

A technology of tailings and tailings ponds, which is applied in the field of metallurgy and mines. It can solve the problems of difficult operation, high infrastructure investment and dehydration operation, and easy dusting of tailings ponds. It achieves high permeability coefficient, high safety factor, and anti-skid stable big effect

Active Publication Date: 2016-02-24
金建工程设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has higher safety degree and water return rate of tailings storage, but higher infrastructure investment and dehydration operation (dehydration cost is about 5-8 yuan / ton), and it is more difficult to operate in heavy rainfall and cold areas. prone to dust

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] When the amount of coarse tailings in the tailings is relatively large, the tailings dam can adopt the downstream dam filling method.

[0029] figure 1 Among them, the height of the initial dam 2 is determined according to the storage capacity formed by it, which can store at least the amount of tailings more than half a year after the concentrator is put into operation, and meets other regulations of the specification. The initial dam is preferably a permeable rockfill dam, or an earth-rock dam with seepage drainage facilities on the inner slope of the dam, which can guide the seepage water from the tailings slurry to the outside of the dam, speed up the consolidation of the tailings, and increase the stability of the dam body.

[0030] Flood drainage system 3 is arranged according to terrain and geological conditions, and generally adopts other types such as drainage well-drainage pipe type, drainage well-drainage tunnel type or drainage chute-drainage pipe type.

[...

Embodiment 2

[0036] When the amount of coarse tailings in the tailings is small, but there are more ore dressing or mining waste rocks, the tailings dam can adopt the improved downstream dam method. The inside of the dam uses classified coarse tailings, and the outside of the dam uses waste rocks. A reverse filter layer is set in the middle joint part.

[0037] figure 2 Among them, the height of the initial dam 2 is determined according to the storage capacity formed by it, which can store at least the amount of tailings more than half a year after the concentrator is put into operation, and meets other regulations of the specification. The initial dam 2 is preferably a permeable rockfill dam, or an earth-rockfill dam with seepage drainage facilities on the inner slope of the dam, which can guide the seepage water from the tailings slurry to the outside of the dam, speed up the consolidation of the tailings, and increase the stability of the dam body.

[0038] Flood drainage system 3 is ar...

Embodiment 3

[0044] When the amount of coarse tailings in the tailings is small, and the ore dressing or mining waste is small, the tailings dam can adopt the centerline dam method.

[0045] image 3 Among them, the height of the initial dam 2 is determined according to the storage capacity formed by it, which can store at least the amount of tailings more than half a year after the beneficiation is put into production, and meets other regulations of the specification. The initial dam 2 is preferably a permeable rockfill dam, or an earth-rockfill dam with seepage drainage facilities on the inner slope of the dam, which can guide the seepage water from the tailings slurry to the outside of the dam, speed up the consolidation of the tailings, and increase the stability of the dam body.

[0046] Flood drainage system 3 is arranged according to terrain and geological conditions, and generally adopts other types such as drainage well-drainage pipe type, drainage well-drainage tunnel type or dra...

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Abstract

The invention belongs to the field of metallurgical mines, and particularly relates to a water-saving tailing discharge method. A place is selected according to the tailing pond address selection principle. A tailing pond, a primary dam, a floodwater drainage system, a seepage drainage system, a tailing conveying system, a tailing classification and condensation system, a water return system and other matched facilities are reasonably arranged according to terrain and geological conditions. The tailing conveying system comprises a section from a dressing plant to a hydrocyclone, a section from the hydrocyclone to a thickener, and a section form the underflow of the thickener to the tailing pond. Pumping or self-flowing conveying can be adopted for the conveying process of each section. The tailing classification and concentration involves the steps that ore pulp coming from the dressing plant is classified through the hydrocyclone; and overflow tailing ore pulp of the hydrocyclone is concentrated through the thickener. The water return system comprises a thickener overflow water return system and a tailing pond water return system. Return water can be conveyed to the mineral processing process to be recycled in a pumping or self-flowing conveying manner. The tailing pond formed through the method is good in anti-seismic property, high in return water utilization rate, low in dam body seepage line, large in anti-slide buckling safety factor, wide in application range and low in operation and management expense.

Description

technical field [0001] The invention belongs to the field of metallurgy and mines, in particular to a water-saving tailings discharge method. Background technique [0002] Tailings are the wastes discharged by the concentrator after crushing metal and non-metallic ores and selecting "useful components" under specific economic and technical conditions, that is, the remaining solid waste after the ores have been separated into concentrates. Most of them are discharged in the form of mud, and the tailings pond is a place for storing tailings. Tailings pond is an important part of mine engineering. As a man-made debris flow hazard source with high potential energy, its safe operation plays a very important role in the production process of the entire mining enterprise. The stability of its dam body has aroused people's attention. focus on. [0003] With the rapid development of the economy and the shortage of mineral resources, the level of beneficiation technology and the rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/06E02B11/00B04C9/00
CPCB04C9/00E02B7/06E02B11/00E02B11/005
Inventor 陈欢李瑞林白娥贾晔王敬瑞呼艳芬岳士睿蒋旭雄王镭
Owner 金建工程设计有限公司
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