Method for recycling copper minerals from copper and sulfur separating tailings

A copper-sulfur separation and copper recovery technology, applied in the direction of solid separation, cyclone device, etc., can solve the problems of poor buoyancy, high fine mud content, high sulfur-copper ratio, etc., to reduce entrainment, reduce adverse effects, and improve foam status effect

Active Publication Date: 2020-04-21
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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Problems solved by technology

[0004] The above factors lead to a wide particle size distribution of copper minerals in the copper-sulfur separation tailings, and the copper recovery rate is not high when the conventional flotation process is used to treat the copper-sulfur separation tailings; at the same time, the ratio of sulfur to copper in the copper-sulfur separation tailings is high, generally Under normal circumstances, the copper grade in the copper-sulfur separation tailings is 0.10% to 0.20%, and the sulfur grade is 30% to 40%. Iron ore is mainly dissociated pyrite, and its buoyancy is obviously better than that of copper minerals; in addition, because copper and sulfur are generally regri...

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  • Method for recycling copper minerals from copper and sulfur separating tailings

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Embodiment approach

[0036] (1) In the classification operation, the copper-sulfur separation tailings are classified by the cyclone, and the obtained grit minerals are -0.043mm, accounting for 50% to 70%, and the minerals in the overflow are -0.038mm. 80% to 100%, so that the fine-grained copper minerals are separated from the coarse-grained copper-bearing associations. The main useful minerals in the sediment are coarse-grained copper-containing associations, and the main useful minerals in the overflow are fine-grained copper. Minerals, minerals in sedimentation and overflow are all under narrow particle size conditions, which can facilitate the subsequent targeted flotation treatment of sedimentation and overflow, and effectively solve the problem of copper-sulfur separation tailings under wide particle size conditions. The flotation recovery rate of copper minerals in mines is not high. In practical application, the ore feeding pressure of the cyclone classification is preferably 0.08-0.12 MP...

Embodiment 1

[0052] A veinlet disseminated copper-sulfur ore, the main metal minerals in the raw ore are chalcopyrite, pyrite, and a small amount of chalcocite, and the main gangue minerals are quartz, feldspar, dolomite, chlorite, pyroxene Wait. The raw ore undergoes "copper-sulfur mixed separation-coarse concentrate regrinding-copper-sulfur separation" operation, and the obtained copper-sulfur separation tailings contain 0.17% copper and 34.54% sulfur. The copper minerals in the copper-sulfur separation tailings are mainly brass The pyrite minerals are mainly pyrite, and the particle size of copper-sulfur separation tailings is -0.043mm, accounting for 72%.

[0053] A method for recovering copper minerals from copper-sulfur separation tailings, used for beneficiation of copper minerals in the copper-sulfur separation tailings, specifically may include the following steps:

[0054] Step 1. Classify the copper-sulfur separation tailings by cyclone to obtain overflow and grit; the obtained...

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Abstract

The invention discloses a method for recycling copper minerals from copper and sulfur separating tailings. The method comprises the following steps: performing size grading on the copper and sulfur separating tailings through a whirlcone, thereby obtaining overflow and sand settling; adding a regulator, a foaming agent and a first copper mineral collecting agent into the overflow under a natural pH value condition to perform roughing, thereby obtaining first rough concentrate; regulating the pH value of pulp to be 10-12 with lime for the sand setting, adding the foaming agent and the second copper mineral collecting agent, and performing roughening, thereby obtaining second rough concentrate; performing mineral grinding on the second rough concentrate to obtain mineral-grinded second roughconcentrate; combining the first rough concentrate with the mineral-grinded second rough concentrate, and adding the regulator and the first copper mineral collecting agent to perform concentration,thereby obtaining copper concentrate. The method can increase a recovery rate of the copper minerals, obtains copper concentrate with qualified grade, is moderate in middling circulating amount, is simple to operate, is stable in process, is convenient for field management, and is high in adaptation.

Description

technical field [0001] The invention relates to the technical field of copper-sulfur ore beneficiation, in particular to a method for recovering copper minerals from copper-sulfur separation tailings. Background technique [0002] Copper is the first metal discovered and used by humans. Because of its good ductility, thermal conductivity and electrical conductivity, it is widely used in electrical, transportation, construction and other industries, and plays an important role in the national economy. China is a big copper consumer and has a large demand for copper resources. With the gradual depletion of domestic high-grade and easy-to-mining copper ore resources, it is of great significance to strengthen the recovery of copper resources in tailings. [0003] Copper-sulfide ore is the main type of copper ore in my country. As the most important associated mineral of copper sulfide ore, pyrite has the characteristics of good buoyancy and easy activation by free copper ions. I...

Claims

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Application Information

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IPC IPC(8): B03B9/00B04C9/00
CPCB03B9/00B04C9/00
Inventor 陈旭波王立刚叶岳华孙志健田祎兰胡志强李俊旺周高云朴永超万丽于洋于志超
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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