A water-saving tailings discharge method

A technology of tailings and tailings ponds, applied in the field of metallurgy and mines, can solve the problems of tailings ponds that are prone to dust, difficult operation, high infrastructure investment and dehydration operation, and achieve high anti-sliding stability, large permeability coefficient, and safety factor big effect

Active Publication Date: 2018-02-02
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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  • A water-saving tailings discharge method
  • A water-saving tailings discharge method
  • A water-saving tailings discharge method

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 In the middle, the height of the initial dam 2 is confirmed according to its formed storage capacity to store at least the amount of tailings for more than half a year after the beneficiation plant 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 drainage facilities on the inner slope of the dam, which can lead the internal seepage of the tailing slurry to the outside of the dam, accelerate the consolidation of tailings, and increase the stability of the dam.

[0030] The flood drainage system 3 is arranged according to topography 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.

[0031] The drainage...

Embodiment 2

[0036] When the amount of coarse tailings in the tailings is small and there are more beneficiation or mining wastes, the tailings dam can adopt the improved downstream dam method, the inner side of the dam adopts coarse-grained tailings after classification, and the outer side of the dam adopts waste rock. An inverse filter layer is provided in the middle joint part.

[0037] figure 2 In the middle, the height of the initial dam 2 is confirmed according to its formed storage capacity to store at least the amount of tailings for more than half a year after the beneficiation plant is put into operation, and meets other regulations of the specification. The initial dam 2 is preferably a permeable rockfill dam, or an earth-rock dam with drainage facilities on the inner slope of the dam, which can guide the internal seepage of the tailing slurry to the outside of the dam, speed up the tailings consolidation, and increase the stability of the dam.

[0038] The flood drainage system 3 i...

Embodiment 3

[0044] When the amount of coarse tailings in the tailings is small, and the beneficiation or mining waste rock is small, the tailings dam can use the center line dam method.

[0045] image 3 In the middle, the height of the initial dam 2 is confirmed according to its formed storage capacity to store at least the amount of tailings for more than half a year after the beneficiation is put into production, and meets other regulations in the specification. The initial dam 2 is preferably a permeable rockfill dam, or an earth-rock dam with drainage facilities on the inner slope of the dam, which can guide the internal seepage of the tailing slurry to the outside of the dam, speed up the tailings consolidation, and increase the stability of the dam.

[0046] The flood drainage system 3 is arranged according to topography 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...

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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 metallurgical mines, and particularly relates to a water-saving tailings discharge method. Background technique [0002] Tailings are the waste discharged by the concentrator after crushing and grinding metal and non-metal ores and selecting "useful components" under certain economic and technical conditions, that is, the solid waste remaining after the ore is separated into the concentrate. 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 dangerous source of man-made debris flow with high potential energy, its safe operation plays a very important role in the entire production process of mining enterprises. The stability of its dam body has caused people’s concerns. attention. [0003] With the rapid economic development and shortage of mineral resources, the level of beneficiation technology and the recov...

Claims

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Application Information

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Patent Type & Authority Patents(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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