Flotation process for reducing fluorine content in copper sulfide concentrate

A copper sulfide and concentrate technology, applied in flotation, solid separation and other directions, can solve the problem of acid-making catalyst pulverization, corrosion of acid-making equipment and wastewater treatment equipment, excessive fluorine content in copper sulfide concentrate, and increased maintenance costs, etc. problems, to achieve the effect of suppressing floatability, reducing entrainment, and efficient recovery

Pending Publication Date: 2022-07-29
厦门紫金矿冶技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the flotation process of copper sulfide minerals, fluorine-containing minerals are easy to enter into the copper sulfide concentrate in the form of co-generation or entrainment, resulting in excessive fluorine content in the copper sulfide concentrate
In the copper sulfide smelting process, fluorine is likely to cause serious corrosion to the furnace body, furnace wall, tuyere, slag outlet, etc., affecting production operations and increasing maintenance costs sharply
At the same time, fluorine is also easy to enter the acid system of smelting flue gas, resulting in the continuous increase of fluorine content in waste acid, resulting in the pulverization of acid catalyst and the corrosion of acid equipment and wastewater treatment equipment, which is extremely harmful

Method used

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  • Flotation process for reducing fluorine content in copper sulfide concentrate
  • Flotation process for reducing fluorine content in copper sulfide concentrate
  • Flotation process for reducing fluorine content in copper sulfide concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A foreign large-scale oxygen-sulfur mixed copper mine has a copper content of 4.11%, a sulfur content of 0.26% and a fluorine content of 0.19%. The copper minerals are mainly chalcocite (1.27%), malachite (5.90%), a small amount of sill malachite (0.57%), chalcopyrite (0.19%) and traces of cerulis and cuprite; other metal minerals Mainly pyrite (0.95%), limonite (0.80%), hematite (0.67%); gangue minerals are mainly quartz, dolomite, feldspar, mica, chlorite, fluorapatite, etc. . flotation process such as figure 1 As shown, A: butyl xanthate; B: butyl ammonium black medicine; C: 2# oil; D: clear water; E: dispersant; 1: copper sulfide roughing concentrate; 2: copper sulfide roughing tailings ;3: Copper sulfide scavenging rough concentrate; 4: The first selection of tailings; 5: The second selection of tailings; 6: The third selection of tailings; 7: The fourth selection of tailings .

[0029] The raw ore is added to the ball mill for rough grinding, the concentration...

Embodiment 2

[0031] In an extra-large copper sulfide mine abroad, the raw ore contains 4.32% copper, 1.01% sulfur and 0.16% fluorine. The main copper minerals are chalcocite, followed by bornite, which contains a small amount of natural copper, cuprite, malachite and silicomaalachite. Gangue minerals are mainly feldspar, followed by mica minerals and quartz. The target minerals are embedded with fine particle size, which is easy to entrain fluorine-containing minerals. using as figure 1 The process shown is processed, and the specific steps include:

[0032] The raw ore is added to the ball mill for rough grinding. The rough grinding concentration is 75%, and the final rough grinding fineness is -0.074mm, accounting for 66%; the grinding product enters the roughing operation, and the flotation slurry concentration is 32%. Add collector and foaming agent in the process. According to the dry weight of raw ore, add collector butyl xanthate 110g / t and butylammonium black medicine 25g / t per ...

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Abstract

The invention discloses a flotation process for reducing fluorine content in copper sulphide concentrate, which adopts a rough grinding and rough concentrate regrinding technology, and can realize recovery of dissociated coarse-grain copper ore through rough grinding and rough scavenging; and effective dissociation of copper sulphide minerals and fluorine-containing minerals is achieved through rough concentrate regrinding and concentration operation. A low-ore-pulp-concentration flotation technology is adopted, before first-time concentration operation, clear water is added, the flotation ore pulp concentration is reduced, the flotation ore pulp concentration is controlled to range from 20% to 22%, the entrainment phenomenon of fluorine-containing minerals can be reduced, and the fluorine content in copper sulfide concentrate is reduced. A dispersing agent fluorine reduction technology is adopted, and a proper amount of dispersing agent is added before the second concentration operation and the third concentration operation, so that agglomeration and adsorption phenomena of fluorine-containing minerals and copper sulfide minerals due to electrostatic interaction or adsorption can be prevented, and meanwhile, the floatability of the fluorine-containing minerals can be inhibited, so that the fluorine content in the copper sulfide concentrate is reduced.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a flotation process for reducing the fluorine content in copper sulfide concentrate. Background technique [0002] Fluorine has strong electronegativity and excellent coordination ability, and mainly exists in the form of fluorite, fluorapatite and cryolite in nature. Flotation is one of the commonly used beneficiation methods for treating copper sulfide ores, and has the advantages of low cost and high efficiency. During the flotation process of copper sulfide minerals, fluorine-containing minerals are easy to enter into copper sulfide concentrates in the form of continuous growth or entrainment, resulting in excessive fluorine content in copper sulfide concentrates. In the process of copper sulfide smelting, fluorine is easy to cause serious erosion to the furnace body, furnace wall, tuyere, slag mouth, etc., affecting production operations and sharply increasing ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D1/002B03B1/00B03D1/02B03D101/02B03D101/04B03D103/02
CPCB03D1/012B03D1/002B03B1/00B03D1/02B03D2201/02B03D2201/04B03D2201/005B03D2203/02
Inventor 陈水波孙忠梅徐其红黄晟石仑雷
Owner 厦门紫金矿冶技术有限公司
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