Method for screening copper from copper-containing sulfur concentrates low in copper grade

A concentrate, copper-sulfur technology, applied in flotation, solid separation and other directions, can solve the problem of not being able to comprehensively recover copper, and achieve the effects of improving sorting indicators, thorough drug removal, and improving recovery rate.

Inactive Publication Date: 2019-02-26
安徽马钢罗河矿业有限责任公司 +2
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing technology cannot comprehensively recover copper in very low copper-grade copper-containing sulfur concentrates, and to provide a high enrichment ratio, simple process flow, and strong adaptability from very low copper grade Method for separating copper from copper-containing sulfur concentrate

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  • Method for screening copper from copper-containing sulfur concentrates low in copper grade
  • Method for screening copper from copper-containing sulfur concentrates low in copper grade
  • Method for screening copper from copper-containing sulfur concentrates low in copper grade

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Embodiment Construction

[0027] In order to further describe the present invention, a method for separating copper from a copper-containing sulfur concentrate with extremely low copper grade will be further described in detail below in conjunction with the accompanying drawings and examples.

[0028] The extremely low-grade copper-containing sulfur concentrates treated in the examples were taken from an iron ore dressing plant in Anhui. The results of chemical multi-element analysis and copper phase analysis are shown in Table 1 and Table 2, respectively.

[0029] Table 1 Chemical multi-element analysis results of copper-bearing sulfur concentrates (%)

[0030]

[0031] Table 1 shows that in addition to sulfur and iron in sulfur concentrate, Cu also has comprehensive recovery value (gold and silver are enriched in copper concentrate).

[0032] Table 2 Phase analysis results of copper in copper-bearing sulfur concentrate (%)

[0033] Mineral phase name

Copper content in copper phase

...

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Abstract

The invention discloses a method for screening copper from copper-containing sulfur concentrates low in copper grade. According to the method, activated carbon is adopted for detoxification in rough screening, a ball milling and scrubbing mode is adopted for detoxification again after rough concentrates are subjected to preliminary precise screening, and a 'semi-centralization-semi-sequentialization' middling returning mode is adopted in a closed loop of one-time rough screening, four-time precise screening and two-time scavenging during flotation. Middling products separately obtained after the second precise screening, the third precise screening and the fourth precise screening are centrally returned for preliminary precise screening operation, the second precise screening, the third precise screening and the fourth precise screening are similar to path opening precise screening, and the middlings obtained after preliminary precise screening, preliminary scavenging and secondary scavenging are returned in sequence. Separation of copper and sulfur of the copper-containing sulfur concentrates low in the copper grade is achieved, and under the condition that the sulfur concentratesonly contain 0.240% of copper, by means of the method, copper concentrates with the copper grade of 17.51% are obtained successfully, wherein the enrichment ratio reaches 72.96 times.

Description

technical field [0001] The invention belongs to the technical field of copper-sulfur separation and beneficiation, in particular to a copper-sulfur separation and beneficiation method for copper-sulfur concentrates with extremely low copper content, and is particularly suitable for separating copper-sulfur concentrates with a copper grade of 0.2% to 0.4%. Copper concentrates with a copper grade above 17.0% are selected. Background technique [0002] Domestic iron (sulfur) mine concentrators often contain copper in the sulfur concentrate products. At present, in the production practice of comprehensive recovery of copper in sulfur concentrate, the copper grade in sulfur concentrate is generally above 0.6%. . For example, Lujiang Longqiao Mining Industry Co., Ltd. contains 1.0% to 2.0% copper in the sulfur concentrate. The sulfur concentrate adopts cyclone classification-ball milling-flotation first rough, second fine, second sweep closed-circuit (medium ore return in sequenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03D1/01B03B1/00B03D101/06B03D101/02B03D103/02
CPCB03B1/00B03D1/002B03D1/01B03D2201/007B03D2201/02B03D2201/06B03D2203/02
Inventor 吴新义杨任新王宏喜蔡顺贵丁开振刘军王炬王小玉胡炳胜袁启东张永李亮陈洲
Owner 安徽马钢罗河矿业有限责任公司
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