Beneficiation method of recovering sulfur from copper sulfide ore flotation tailings

A technology for flotation tailings and ore dressing methods, applied in flotation, solid separation, etc., can solve the problems of low recovery rate of polluted sulfur, achieve stable process flow, reduce the amount of sulfuric acid, and reduce the amount of sulfuric acid.

Active Publication Date: 2013-06-19
JIANGXI COPPER
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Problems solved by technology

The above process may have the problem of acid mist

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  • Beneficiation method of recovering sulfur from copper sulfide ore flotation tailings

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[0016] Jiangxi Copper Company's Dexing Copper Mine Dashan Concentrator has a production capacity of 92,000 t / d. Copper flotation tailings are used for sulfur separation. The sulfur separation operation adopts hydrocyclones, and the output and concentrate grade cannot meet the needs of acid production.

[0017] 1. Equipment configuration of the flotation sulfur system: 10 sets of 70m 3 Sulfur selection by inflatable flotation machine. Choose 2 sets of φ420mm×10 cyclone classification equipment. Choose three 12 / 10ST-AH slurry pumps and one φ45m thickener.

[0018] 2. Flotation process: the copper-sulfur separated tailings are demedicated and dewatered by thickeners. After the underflow enters the cyclone for classification, the sedimented sand enters the flotation sulfur system, and the overflow can also enter after being washed and demedicated by the thickener The sulfur flotation system, through a rough selection, a sweep selection, and two selections to obtain the final sulfur c...

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Abstract

The invention belongs to the field of mineral processing, relates to a beneficiation method, and particularly relates to a method of sorting copper sulfide ore flotation tailings. The method comprises the following steps: A, the tailings with copper and sulfur separated are dewatered through a thickener, wherein the content of the sulfur in the tailings is more than 20%, and the concentration of the tailings is 10-15%, and after the tailings are dewatered, the concentration of a bottom current is improved to 20-25%; B, the bottom current of the A step enters a whirlcone to grade, and the concentration of sinking sand of the whirlcone is improved to 30-40%, the whirlcone overflows, the concentration of the tailings is 10%, the content of the sulfur is 15%, the tailings are discharged to a tailings pond or are concentrated back to the step A; and C, the concentration of the sinking sand in the step B is 30-40%, the content of the sulfur is 25-35%, the sinking sand enters to a flotation system, acid is added in the sinking sand and are mixed with a pH value of 6.5-7.5, after flotation reagents are added, final sulfur concentrate is obtained after one-time rough concentration, one-time scavenging and two-time choiceness. Compared with the prior technology, the beneficiation method of recovering the sulfur from the copper sulfide ore flotation tailings has the advantages of being stable in technological process, small in dosage of sulfuric acid and high in grade of sulfur concentrate and recovery rate.

Description

[0001] technical field [0002] The invention belongs to the field of mineral processing, and relates to an ore dressing method, in particular to a method for sorting copper sulfide ore flotation tailings. [0003] Background technique [0004] Sulfuric acid is one of the important products in the basic chemical industry and is widely used in other national economic sectors. The main raw materials for the production of sulfuric acid are: pyrite, sulfur and smelting flue gas. With the development of the national economy, the market demand for sulfuric acid is increasing day by day. Improving the comprehensive recovery rate of pyrite resources and increasing the source of sulfuric acid raw materials play an important role in the economic development of our country. [0005] Copper-sulfur separation is generally carried out in a strong alkaline medium, and a large amount of lime forms a high-alkaline and high-calcium medium condition, which inhibits pyrite. In order to acti...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03B1/00
Inventor 谢捷敏洪建华汪中伟罗时军余玮谢卫红张红华
Owner JIANGXI COPPER
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