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A method for recovering multiple elements from gold tailings waste slag

A gold tailings, multi-element technology, applied in the field of mining, can solve the problems of waste of concentrate resources, coarse grinding fineness, short grinding time, etc., and achieve the effect of reducing the grade of gold and improving the grinding fineness.

Active Publication Date: 2017-12-26
SHANDONG JIUQU SHENGJI NEW BUILDING MATERIALS
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AI Technical Summary

Problems solved by technology

There is no follow-up tailings re-extraction and recovery process, resulting in a large waste of concentrate resources. The disadvantages of the traditional beneficiation process are: 1. The grinding time is short and the grinding fineness is coarse.
2. The tailings after flotation do not have gold-sulfur concentrate recovery equipment, and this part of the concentrate is wasted

Method used

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  • A method for recovering multiple elements from gold tailings waste slag

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Embodiment Construction

[0018] The principles and features of the present invention are described below in conjunction with examples, which are only used to explain the present invention and are not intended to limit the scope of the invention.

[0019] A method for multi-element recovery of gold tailings waste slag, comprising the steps of:

[0020] 1) Impurity removal: the gold tailings waste residue in the primary silo is screened out of stones and garbage by a vibrating screen and then enters the main silo;

[0021] 2) Ball mill: the waste slag in the main silo is conveyed to the ball mill for grinding for 8 minutes through the belt conveyor;

[0022] 3) Flotation: the product obtained in step 2) is put into the mixing tank and fully stirred, and xanthate and flotation oil are added to it at the same time, 24-26 grams of xanthate and 19-20 grams of flotation oil are added to each ton of tailings, Then enter the flotation machine for flotation, select the sulfur concentrate, and discharge the tai...

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Abstract

The invention relates to a multi-element recovery method of gold tailings waste residue. The gold tailings waste residue is extracted by a vibrating screen to extract stones, garbage, etc., and then enters the main silo, and then enters a ball mill by a belt conveyor for grinding, and then goes through a mixing tank for each Add 24-26 grams of xanthate to tailings waste residue per ton, and 19-20 grams of flotation oil. After fully stirring, enter the flotation machine for flotation. The selected product is sulfur concentrate, and the tailings are discharged by sweeping. The ore pump enters the cyclone, and the bottom flow returns to the ball mill for regrinding. After the overflow enters the spiral chute, the enriched tailings enter the ball mill and flotation machine for regrinding and re-selection, so that the gold content in the tailings is significantly reduced, and then the spiral chute The iron ore concentrate is extracted from the tailings by three-stage magnetic separation. The beneficial effect of the invention is that: the tailings grinding fineness is improved by adopting the technology provided by the invention, the recovery rate is increased from the original 58% to 84%, and the grade of gold in the tailings is significantly reduced after treatment.

Description

technical field [0001] The invention relates to a method for recovering tailings waste residue, in particular to a method for recovering multiple elements of gold tailings waste residue, which belongs to the technical field of mines. Background technique [0002] The amount of waste slag generated after cyanidation extraction of sulfur-containing gold concentrate is very large, especially with the improvement of people's awareness of environmental protection and energy conservation, the treatment and recycling of waste slag produced by smelters has become more and more important. According to the current According to environmental protection requirements, special tailings ponds should be built for waste slag stacking, and the requirements for foreign transportation are relatively strict. [0003] The traditional tailings waste slag beneficiation process is as follows: After the ore is screened by the vibrating screen, it enters the silo through the belt, and then is transpor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/06
CPCY02W30/82
Inventor 王书岩王洪波丛玉韶孙宝军
Owner SHANDONG JIUQU SHENGJI NEW BUILDING MATERIALS
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