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Non-cyanide ore dressing method for gold-copper-lead sulfide ore

A technology of lead sulfide ore dressing method, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of low metal recovery rate, large environmental pollution, high production cost, etc., and achieve high recovery rate of copper and lead, Significant economic benefits and low production costs

Active Publication Date: 2013-07-10
YUANYANG HUAXI GOLD
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Problems solved by technology

[0008] In order to solve the problems of the original gold-copper-lead sulfide ore beneficiation method with complex process, large environmental pollution, high production cost and low metal recovery rate, the present invention provides a cyanide-free beneficiation method for gold-copper-lead sulfide ore, and its technical scheme is as follows:

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  • Non-cyanide ore dressing method for gold-copper-lead sulfide ore
  • Non-cyanide ore dressing method for gold-copper-lead sulfide ore
  • Non-cyanide ore dressing method for gold-copper-lead sulfide ore

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Embodiment Construction

[0026] The cyanide-free beneficiation method of gold-copper-lead sulfide ore mainly includes the following four processes:

[0027] First: Using the combination of Nielsen and shaking table, under the condition of rough grinding of raw ore to -200 mesh 65%, select the gold concentrate with coarse grain grade as the main body, the gold grade is as high as 10%, and the gold recovery rate is as high as 70%; The recovery of fine-grained gold minerals does not require cyanidation, and directly enters the flotation system, and is enriched in copper, lead, and pyrite concentrates through separation flotation, eliminating the cyanide ions and heavy metals produced by the original cyanide gold extraction process Ion pollution to the environment;

[0028] Second: Copper-lead mixed flotation is to achieve efficient separation of copper-lead minerals and pyrite minerals under the pH value of the natural pulp, using the selectivity of the combined collector for minerals and the difference ...

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Abstract

The invention discloses a non-cyanide ore dressing method for gold-copper-lead sulfide ore, which belongs to the technical field of ore dressing processing and is used for solving the problems of complex process, high environmental pollution, high production cost and low recovery rate existing in the conventional ore dressing method for gold ore with multiple associated metals. The method comprises the following steps of: (1) crushing crude ore; (2) grinding ore; (3) extracting gold by performing Nelson gravity treatment; (4) floating copper and lead in a mixed way; (6) extracting sulfur frommixed flotation tailings of copper and lead; and (7) regrinding and recleaning ore in sulfur. According to the method disclosed by the invention, the use of a highly toxic product, i.e., cyanide in the conventional ore dressing method for gold-copper-lead sulfide ore is avoided, high environmental protection benefit is achieved, production cost is low, process flow is simple, and comprehensive resource utilization ratio is high.

Description

technical field [0001] The invention belongs to the technical field of beneficiation and processing, and in particular relates to a beneficiation method of gold-copper-lead sulfide ore. Background technique [0002] The original beneficiation process of gold, copper and lead sulfide ore is crushing, ore grinding, gravity separation, sulfide ore full flotation, cyanide leaching, leaching slag copper and lead flotation separation and gold smelting. [0003] There are following drawbacks in the above mineral processing technology: [0004] 1. The process line is too long, there are many production links, the management is difficult, and the process operation conditions are not easy to grasp, resulting in large fluctuations in production indicators and high metal loss rate; [0005] 2. There are many types of chemicals used in production, and the dosage is large. There are nearly 20 kinds of chemicals, and dangerous chemicals such as sodium cyanide, sulfuric acid and mercury ar...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
Inventor 李守业刘如意段展余关平刘炜吴云阁
Owner YUANYANG HUAXI GOLD
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