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Column-machine jointed segmental asynchronous rough concentrate regrinding and lead selecting method

A coarse concentrate, asynchronous technology, applied in flotation, solid separation and other directions, can solve the problems of complex embedded characteristics, poor beneficiation separation effect, low recovery rate, etc., to improve the recovery rate of silver and lead, and improve the recovery rate of lead , the effect of improving the recovery rate

Inactive Publication Date: 2018-03-09
南京银茂铅锌矿业有限公司
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Problems solved by technology

[0002] Most non-ferrous metal silver-lead-zinc sulfide ores at home and abroad adopt the method of one-stage grinding flotation machine flotation, and with the exploitation and utilization of resources, non-ferrous metal lead-zinc sulfide ores are becoming poorer, finer, more complex, and their embedded distribution characteristics are becoming more and more complicated. It is becoming more and more complicated, and the simple one-stage grinding flotation machine flotation can no longer meet the requirements of this change, the separation effect of ore dressing is poor, and the recovery rate is low

Method used

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  • Column-machine jointed segmental asynchronous rough concentrate regrinding and lead selecting method
  • Column-machine jointed segmental asynchronous rough concentrate regrinding and lead selecting method
  • Column-machine jointed segmental asynchronous rough concentrate regrinding and lead selecting method

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Embodiment 1

[0033] The column machine united subsection asynchronous coarse concentrate regrinding method for lead selection includes the following steps:

[0034] A. The raw ore enters the cyclone for grading after being ball milled by the ball mill, and the overflow enters the dense pool to concentrate and then undergoes rapid lead separation by flotation by flotation machine;

[0035] B. After the rapid separation tailings are roughed, the coarse concentrate enters the vertical mill for grinding again, and the cyclone classification overflow is concentrated through the thickening pool and then enters the flotation column for flotation for lead separation.

[0036] The process parameters are as follows: primary grinding pulp PH is 9.20, pulp concentration is 50%, primary grinding fineness -200 mesh is 70%, regrinding fineness -400 mesh is 92.3%, and the chemical system of beneficiation is: BK906 is 85g / t, BK901B is 16g / t, BK204 is 12g / t, zinc sulfate is 1800g / t, and sodium sulfite is 1...

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Abstract

The invention discloses a column-machine jointed segmental asynchronous rough concentrate regrinding and lead selecting method, which includes steps of A, performing ball-milling on raw ore by a ballmill and grading by a whirlcone; making the overflow enter a thickening pond to condense, and then floating the raw ore through a flotation machine to rapidly select lead; B, after rapidly coarse selection of gangue, making the rough concentrate to a vertical mill and then performing the ore grinding work; grading the overflow by the whirlcone to condense by the thickening pond and then enter a flotation pillar to float and select lead. The method can preferentially select the silver lead mines which are easy to dissociate monomer and float by the flotation machine; then the gangue is rapidlyselected to rough; after milling, the silver lead mines with complex distribution characteristics, fine grains and difficulty in monomer disassociation can be floated from the rough concentration, thereby reaching the purpose of improving the recovery of the silver lead. The method can simplify the selection flow, reduce the energy consumption, improve the grade recovery of silver lead concentration in the silver lead zinc sulphide ore, improve the lead selection recovery by 5%, improve the silver recovery in lead by 5%, and realize the high-efficient separation of silver and lead.

Description

technical field [0001] The invention relates to a method for separating lead, in particular to a method for separating lead by combining a column machine with segmented asynchronous rough concentrate regrinding. Background technique [0002] Most of the non-ferrous metal silver-lead-zinc sulfide ores at home and abroad adopt the method of one-stage grinding flotation machine flotation, and with the exploitation and utilization of resources, the non-ferrous metal lead-zinc sulfide ores are becoming poorer, finer and more complex, and the embedded distribution characteristics are becoming more and more complicated. It is becoming more and more complex, and the simple one-stage grinding flotation machine flotation can no longer meet the requirements of this change, the separation effect of ore dressing is poor, and the recovery rate is low. As a simple structure, fast flotation speed, high enrichment ratio, high recovery rate, flotation column is suitable for the separation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/14B03D1/018B03D103/02
CPCB03D1/1406B03D1/018B03D2203/02
Inventor 许增光
Owner 南京银茂铅锌矿业有限公司
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