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Flotation Method of Refractory Concentrate Pyrite

A technology of concentrate and flotation, applied in flotation, solid separation, etc., can solve problems such as unstable heat balance in boiling roasting system, ineffective use of iron resources, complex composition of pulp in sulfur separation process, etc., to achieve great practicality and Economic benefits, adhere to energy saving and consumption reduction, and realize the effect of efficient utilization

Inactive Publication Date: 2017-01-04
新疆星塔矿业有限公司
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Problems solved by technology

[0004] Xinjiang mines are mostly polymetallic ores with complex components, and the sulfur grade of the gold concentrate is 10% to 25%. When the two-stage roasting process is used to treat the gold concentrate, due to the relatively low sulfur grade, the thermal balance of the boiling roasting system is unstable, resulting in Insufficient roasting affects the subsequent cyanidation leaching of calcined sand, and the iron grade after cyanidation leaching of slag is low and has almost no use value.
The sources of gold concentrates in other places are extensive and complicated, and all of them have undergone multiple flotation of non-ferrous metals, resulting in extremely complex components of the slurry in the sulfur separation process and serious contamination by various chemicals

Method used

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  • Flotation Method of Refractory Concentrate Pyrite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, after taking the ratio of Beijiang, Zhengyuan and Xinyuan mines (9:5:2), the sulfur and iron contents in the ore are 18.66% and 20.67% respectively.

[0037] The chemical composition of sulfur-containing gold concentrate 1 is as follows:

[0038] Table 1. Content of element 1 in sulfur-bearing gold concentrates (%)

[0039] element S(%) Fe(%) Cu(%) Zn(%) Pb(%) content 18.66 20.67 0.23 0.038 0.010 element As(%) Au (g / t) Ag (g / t) al 2 o 3 (%) SiO 2 (%) content 1.98 45.35 13.38 6.72 35.11

[0040] (1) rough selection

[0041]The gold concentrate with a sulfur content of 18.66% is mixed with water to form a 30%-35% slurry into the roughing tank, and sulfuric acid is added to stir for 3 minutes to keep the pH of the slurry at 5; add copper sulfate in sequence to each ton of gold concentrate 300-500 grams, stirred for 2 minutes; 320 grams of mercapto sulfide mineral collectors, stirred...

Embodiment 2

[0057] After taking Zaozigou, Tianhao, Beijiang, Zhengyuan, Xinyuan and Kunhe mines (45:18:18:10:4:18) as the ratio, the sulfur and iron contents in the ore are 14.06% and 14.63% respectively

[0058] The chemical composition of sulfur-containing gold concentrate 2 is as follows:

[0059] Table 3. Element 2 content of sulfur-bearing gold concentrate (%)

[0060] element S(%) Fe(%) Cu(%) Zn(%) Pb(%) content 14.06 14.63 0.19 0.047 0.015 element As(%) Au (g / t) Ag (g / t) al 2 o 3 (%) SiO 2 (%) content 2.74 44.30 9.52 8.64 38.15

[0061] (1) rough selection

[0062] The gold concentrate with a sulfur content of 14.06% is mixed with water to form a 30%-35% pulp into the roughing tank, and sulfuric acid is added to stir for 3 minutes to keep the pH of the pulp at 5; add copper sulfate in sequence to each ton of gold concentrate 300-500 grams, stirred for 2 minutes; 320 grams of mercapto sulfide mineral collectors, stirred...

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Abstract

The invention discloses a flotation method for sulfur and iron in refractory concentrates. The flotation method includes the steps of roughing, first concentration and Nth concentration. On the condition without ore sample grinding, refractory concentrates are activated sufficiently by the aid of a novel high-activation modifier, technical indexes in separation of enrichment-sulfur concentrates and tailings are high, and particularly, the technical indexes include that gold concentrates containing 42% of sulfur can be achieved and the recovery rate reaches 92%.

Description

technical field [0001] The invention relates to the technical field of mineral processing engineering, in particular to a method for efficiently utilizing sulfur and iron resources in gold concentrates, in particular to a method for refractory low-sulfur gold concentrates (sulfur ≥ 15%, iron ≥ 20%). Flotation method for iron. Background technique [0002] With the rapid development of the economy, the contradiction between the overall supply and demand of mineral resources has become increasingly acute. In particular, some important mineral resources in China have been unable to make ends meet. The increase in production is much lower than the growth in consumption, and the import volume has risen sharply. The degree of dependence on foreign countries has increased year by year. The serious shortage of reserve resources has seriously hindered the sustainable development of my country's mining industry. For example, the comprehensive utilization rate of the associated resourc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02
Inventor 王永成刘洪晓杨静杨兴庆
Owner 新疆星塔矿业有限公司
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