A kind of beneficiation method for recovering polymetallic from gold-bearing gravity separation tailings

A technology for gravity separation of tailings and beneficiation methods, applied in solid separation and other directions, can solve the problems of low comprehensive recovery rate and comprehensive utilization rate of metals, and achieve the effects of low environmental pollution, low emission rate and huge economic benefits.

Active Publication Date: 2022-04-01
NORTHEASTERN UNIV LIAONING
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  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of beneficiation method for recovering polymetallic from gold-bearing gravity separation tailings, to solve the problem of low comprehensive recovery rate and comprehensive utilization rate of metals in complex tailings

Method used

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  • A kind of beneficiation method for recovering polymetallic from gold-bearing gravity separation tailings

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Process such as figure 1 shown;

[0030] Add water to the gold-bearing gravity separation tailings and stir to make a slurry with a mass concentration of 35%; the gold-containing gravity separation tailings are gravity separation tailings obtained from gold-bearing lead-zinc ores after jigging gravity separation, and their solid components contain 1.5g of Au / t, containing Pb18%, Cu 2.0%, Zn 2.7% by mass percentage, and the part with a particle size of ≤0.074 mm accounts for 85% of the total mass;

[0031] Add activator water glass to the pulp, and then stir evenly to make activated pulp; the amount of water glass added is based on the solid content of 300g / t pulp;

[0032] Put the activated pulp in the flotation machine, add collectors and foaming agents in sequence, and then perform a roughing to obtain a roughing concentrate and a roughing tailings; the collector is butyl xanthate , the addition amount is according to the solid component in 200g / t ore slurry; The d...

Embodiment 2

[0045] Method is with embodiment 1, and difference is:

[0046] (1) The mass concentration of ore pulp is 40%; the solid component of gold-bearing gravity separation tailings contains Au 1.3g / t, and contains Pb15%, Cu 1.8%, Zn 2.5% by mass percentage, and the part with a particle size of ≤0.074 mm accounts for the total mass 90%;

[0047] (2) The amount of water glass added is based on the solid content of 350g / t pulp;

[0048] (3) The amount of butyl xanthate added is based on the solid content of 150g / t pulp; 11 # The amount of oil added is based on the solid content of 40g / t pulp;

[0049] (4) The mass concentration of the secondary pulp is 40%, and the gravity value selected by Nielsen is 60G;

[0050] (5) The mass concentration of the tertiary pulp is 33%; the tertiary pulp is added with lime to adjust the pH value to 11; the amount of zinc sulfate added is 350g / t according to the solid content of the tertiary pulp; , the addition of pine oil is 55g / t three times the ...

Embodiment 3

[0060] Method is with embodiment 1, and difference is:

[0061] (1) The mass concentration of ore pulp is 45%; the solid component of gold-bearing gravity separation tailings contains Au 1.2g / t, and contains Pb12%, Cu 1.6%, Zn 2.3% by mass percentage, and the part with a particle size of ≤0.074 mm accounts for the total mass 95%;

[0062] (2) The amount of water glass added is based on the solid content of 300g / t pulp;

[0063] (3) The amount of butyl xanthate added is based on the solid content of 100g / t pulp; 11 # The amount of oil added is based on the solid content of 30g / t pulp;

[0064] (4) The mass concentration of the secondary pulp is 50%, and the gravity value selected by Nielsen is 40G;

[0065] (5) The mass concentration of the tertiary pulp is 35%; the tertiary pulp is added with lime to adjust the pH value to 10; the amount of zinc sulfate added is 300g / t the solid component of the tertiary pulp; the addition of ethylsulfide nitrogen is 400g / t the solid compon...

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Abstract

A beneficiation method for recovering polymetallic from gold-bearing gravity separation tailings, comprising the following steps: (1) making a gold-bearing gravity separation tailings into a slurry; (2) adding water glass to make an activated slurry; (3) performing a rough separation; (4) The primary roughing concentrate is made into a secondary slurry for Nelson selection; (5) The Nelson tailings are concentrated and made into a third slurry; the secondary roughing is carried out; (6) The secondary roughing concentrate is subjected to two stages Concentration and two-stage scavenging, the concentrate is copper-lead mixed ore, and the tailings are zinc coarse ore; (7) copper-lead mixed ore is made into four times of slurry for two-stage separation; tailings lead concentrate; concentrate copper Concentrate; (8) Coarse zinc ore is made into five times of pulp; three times of roughing; (9) Three times of roughing concentrate is subjected to two-stage selection, and three times of roughing tailings are subjected to three-stage sweeping, and the concentrate is zinc concentrate ore; the tailings are used as coarse sulfur ore; (10) the primary concentration is carried out to the concentrate after rough separation of sulfur rough ore. The method of the invention greatly improves the utilization rate of valuable metals in the gold-bearing gravity separation tailings, and improves the recovery rate of various valuable metals.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a mineral processing method for recovering polymetallic from gold-bearing gravity separation tailings. Background technique [0002] At present, most of the metallurgical enterprises in our country have the problem of tailings that are difficult to deal with, and the comprehensive utilization rate of tailings is low, which results in a serious waste of tailings resources and also endangers the surrounding environmental safety. After the gold-bearing lead-zinc ore is treated by jigging gravity separation, the chemical composition of the gravity separation tailings obtained is relatively complex, mainly containing valuable metals such as gold, copper, zinc, lead and iron. The effective recovery of these valuable metals, It can not only improve the metal recovery rate and metal utilization rate of tailings, but also improve the economic benefits of metallurgic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B03B1/00B03B1/04
Inventor 杨洪英佟琳琳牛会群陈桥张勤
Owner NORTHEASTERN UNIV LIAONING
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