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Treatment process for high-mud gold ores

A processing technology and technology for gold ore, which is applied in the field of gold ore beneficiation and smelting technology, can solve the problems of large consumption, increased metal loss, and reduced concentrate quality, etc., to achieve good economic benefits and improve the effect of resource utilization.

Active Publication Date: 2015-07-01
有研资源环境技术研究院(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sericite schist, chlorite schist and ore with high content of carbonate minerals are easy to slime. The direct impact of ore slime on flotation is to make the concentration of reagents too large, resulting in "float", which destroys the selectivity. The quality of the concentrate is reduced, and the loss of metals increases. In addition, because part of the carrier of gold in the ore is a sulfide mineral, it is not feasible to use full mud cyanide

Method used

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  • Treatment process for high-mud gold ores
  • Treatment process for high-mud gold ores
  • Treatment process for high-mud gold ores

Examples

Experimental program
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Effect test

Embodiment 1

[0029] An ore body in the Nibao Gold Mine in Guizhou contains 3.25g / t of gold and 5.90% of sulfur. The sulfide is mainly pyrite. The distribution rate of gold in pyrite is 42.1%, and the content of pyrite is 10.85%. In the ore, calcite and dolomite account for 0.55%, and clay minerals account for 30.21%. The ore contains 5.64% water. The particle size analysis shows that when the particle size is controlled at -12mm after crushing, the ore slime of -0.074mm accounts for 19.89%. The process of the present invention is suitable for this ore.

[0030] Such as figure 1 The raw ore shown is crushed by the crushing system. After the ore is crushed to -12mm, the ore is washed twice with a trough washing machine. The gold content in the slime is 0.98g / t, and the removal rate of the slime reaches 86.73%. Add PAM flocculant to the mud after ore washing. The amount of flocculant is 600g / ton. After 20 minutes of sludge sedimentation and separation, the separated ore slime is sent to t...

Embodiment 2

[0035] A certain ore body in Henan Niutougou Gold Mine contains 3.36g / t of gold and 3.01% of sulfur. The sulfide is mainly pyrite. The distribution rate of gold in pyrite is 37.3%, and the content of pyrite is 5.60%. In the ore, feldspar alterations accounted for 52%, chlorite and hornblende accounted for 7.5%, calcite and dolomite accounted for 6%, muscovite and sericite accounted for 2.5%, kaolin accounted for 1.5%, and clay minerals accounted for 3%. The ore contains 5.36% water. The particle size analysis shows that when the particle size is controlled at -15mm after crushing, the ore slime of -0.074mm accounts for 18.45%. The process of the present invention is suitable for this ore.

[0036] Such as figure 1 The raw ore shown is crushed by the crushing system. After the ore is crushed to -15mm, the ore is washed twice with a trough washing machine. The gold content in the slime is 1.23g / t, and the removal rate of the slime reaches 87.13%. PAM flocculant is added to t...

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Abstract

The invention relates to a treatment process for high-mud gold ores, in particular to an ore washing-flotation-leaching combined process, that is, after ores are crushed, ore slurry is taken out through an ore washing procedure to enter a stirring leaching procedure; the grinding of the ores and the flotation of gold are performed for placers after the ore washing; and flotation tailings are fed into a tailing pond according to the grade of the gold, or are combined with the ore slurry to perform the stirring leaching for the gold. The process, provided by the invention, can improve the resource utilization rate to bring excellent economic benefit for enterprises.

Description

technical field [0001] The invention relates to a process for dressing and smelting gold ore, in particular to a process for treating high-mud gold ore. Background technique [0002] There are three ways to deal with conventional gold ore. One is flotation to obtain qualified gold concentrate, the process flow chart is as follows figure 2 shown. The second is full mud cyanidation leaching, and its technological process is as follows image 3 shown. The third is flotation-tailings cyanidation leaching, and its technological process is as follows Figure 4 shown. The first process is used for ores where gold mainly exists in the form of single gold or the carrier of gold is sulfide minerals; the second process is mainly used for oxidized ores where gold exists in single gold or cracked gold; the third process is used The carrier of gold is sulfide minerals and oxide minerals, and the ore with low mud content in the ore. For gold ore with high mud content, the first thre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/00C22B11/08B03C9/00
Inventor 李文娟宋永胜温建康陈勇周桂英刘爽刘美林蔡镠璐
Owner 有研资源环境技术研究院(北京)有限公司