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Copper and lead separating cyanide-chrome-free beneficiation method for low-grade multi-metal sulfide ore

A copper-lead separation, cyanide-free and chromium-free technology, applied in solid separation, flotation, etc., can solve environmental pollution and other problems, achieve stable technical and economic indicators, easy process control, and improve the effect of return water utilization

Active Publication Date: 2014-05-28
XINBARHU YOU BANNER RONG DA MINING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, aiming at the important technology that the inhibitors used in the copper-lead separation process of low-grade polymetallic sulfide ore copper-lead mixed concentrate contain chromium, cyanide and other substances that will pollute the environment defect

Method used

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  • Copper and lead separating cyanide-chrome-free beneficiation method for low-grade multi-metal sulfide ore
  • Copper and lead separating cyanide-chrome-free beneficiation method for low-grade multi-metal sulfide ore
  • Copper and lead separating cyanide-chrome-free beneficiation method for low-grade multi-metal sulfide ore

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Embodiment 1

[0031] Copper-lead separation process of a low-grade copper-lead-zinc sulfide ore in Inner Mongolia. The raw ore contains 0.10-0.16% copper, 1.0-2.5% lead, and 2.0-2.5% zinc. The grades of copper, lead and zinc in the raw ore are low, and the useful minerals are embedded The situation is complicated. There are many kinds of copper minerals in the ore, the disseminated particle size of useful minerals is fine, and the symbiotic relationship is close, so it is difficult to separate copper and lead metals. The process adopts priority grinding and classification-copper and lead mixed flotation-regrinding and classification-copper and lead re-election-copper and lead separation-zinc flotation.

[0032] The raw ore is ground and graded into copper-lead mixed flotation to obtain copper-lead mixed concentrate and mixed flotation tailings, and the mixed flotation tailings are re-grinded and graded into the copper-lead re-election process to obtain copper-lead re-election concentrate and...

Embodiment 2

[0037] During the copper-lead separation process of a low-grade copper-lead-zinc sulfide ore in Inner Mongolia, the raw ore contains 0.10-0.16% copper, 2.5-3.5% lead, and 3.5-4.5% zinc. There are many types of minerals, fine particle size of useful minerals, close symbiotic relationship, and difficult separation of copper and lead metals. The process adopts grinding and classification-copper-lead mixed flotation-copper-lead separation-zinc flotation.

[0038] The raw ore is ground and classified into copper-lead mixed flotation to obtain copper-lead mixed concentrate and mixed tailings, and the mixed-selected tailings are subjected to zinc flotation to obtain zinc concentrate and final tailings, and copper-lead mixed concentrate is separated by copper and lead Qualified copper concentrate and lead concentrate are obtained by flotation. In the process of copper-lead mixed flotation, the ore dressing agent 25# black medicine is used as the collector of copper-lead minerals, and s...

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Abstract

The invention discloses a copper and lead separating cyanide-chrome-free beneficiation method for low-grade multi-metal sulfide ore. The beneficiation method is performed according to the following steps that (1) raw ore after ore grinding and grading enters the step of copper and lead bulk flotation to obtain copper and lead bulk concentrate and bulk flotation tailings, beneficiation reagents including 25# black powder and tetrabutyl ammonium black powder are adopted as collecting agents for copper and lead ore, and sodium sulfite and zinc sulfate are adopted as inhibitors of zinc ore; (2) copper and lead separating flotation is performed on the copper and lead bulk concentrate to obtain qualified copper concentrate and lead concentrate, in the copper and lead separating flotation process, activated carbon is adopted for reagent removal, and an inhibitor combined by sodium sulfite, sodium carboxymethyl cellulose and sodium humate serves as the inhibitor of lead sulfide ore. The beneficiation method has the following advantages of being low in price and production and application cost, it is unnecessary to perform special treatment on ore pulp, the process is easy to control, and technological and economic indexes are stable. The great defect that a dichromate titration method, a cyanide method and a less-cyanide-chrome technology can cause pollution to the environment is overcome, and the usage amount of beneficiation new water is greatly reduced.

Description

technical field [0001] The invention discloses a "cyanide-free and chromium-free" ore dressing method for copper-lead separation of low-grade polymetallic sulfide ores, in particular a copper-lead mineral separation method for copper-lead mixed concentrate. It belongs to the technical field of mineral processing. Background technique [0002] The traditional technical solutions for copper-lead separation mainly include: the dichromate method of suppressing lead and floating copper, and the cyanide method of suppressing copper and floating lead. However, these methods will lead to the dissolution of a small amount of precious metals, which will affect the comprehensive recycling of valuable metals and cause serious pollution to the environment. Therefore, the first two processes have been phased out or replaced by other methods. [0003] In recent years, the same industry at home and abroad have extensively carried out research on cyanide-free and chromium-free or less cyan...

Claims

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Application Information

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IPC IPC(8): B03D1/012B03D101/06
Inventor 罗进郑彦超董华生宁致强高振阁杨俊存高华锋苏杰李学明张福张宝文
Owner XINBARHU YOU BANNER RONG DA MINING LLC
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