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Flotation technology of micro-fine particle inbuilt state copper ore

A technology for copper ore and microfine particles, applied in flotation, solid separation, grain processing, etc., can solve the problems of copper smelting production difficulties, low recovery rate of concentrate, easy flotation, etc., and achieve excellent separation effect and chemical system advanced effects

Inactive Publication Date: 2017-09-08
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

In addition, gangue minerals are mainly quartz, orthoclase, muscovite, chlorite, and iron oxides. Such gangue minerals are easy to float and muddy, which will deteriorate the flotation environment and seriously affect the separation effect and fineness. Ore quality
[0003] The micro-grained copper ore is finely embedded, and in the process of crushing and dissociation, the gangues such as quartz, orthoclase, muscovite, chlorite and iron oxide are ground accordingly. Minerals are easy to float and silt, which will cause the deterioration of the flotation environment and seriously affect the separation effect and the quality of the concentrate. It is difficult to obtain a good separation index by using conventional flotation processes and flotation agents to treat such ores. The recovery rate is low, and the copper concentrate contains high silicon, which brings difficulties to copper smelting production and makes it difficult to sell the concentrate

Method used

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  • Flotation technology of micro-fine particle inbuilt state copper ore
  • Flotation technology of micro-fine particle inbuilt state copper ore
  • Flotation technology of micro-fine particle inbuilt state copper ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1:: According to figure 1In the embodiment of the method of the present invention, the raw ore crushed to -2mm is fed into a rod mill for grinding, and the amount of calcium oxide 1020g / t and butyl xanthate are added to the rod mill according to the dry weight of each ton of raw ore The amount of butyl ammonium black medicine is 31g / t each, and the grinding fineness of the discharged pulp is -0.053mm, which accounts for 86%. At this time, the pH value of the pulp is about 9.9. Add 31g / t of butyl xanthate and butylammonium black medicine to the flotation machine, stir for 2 minutes, then add 13g / t of MIBC, stir for 1 minute, and carry out roughing; add butyl to the roughing tailings The dosage of xanthate and butyl ammonium black medicine is 11g / t each, stir for 2 minutes, then add MIBC dosage of 7g / t, stir for 1 minute, and carry out sweeping; do not add any chemicals to the roughing concentrate, and control the flotation concentration of 12 %, carry out the fi...

Embodiment 2

[0036] Embodiment 2: according to figure 1 The embodiment of the method of the present invention, the specific steps, process parameters, and medicament system are exactly the same as those in Example 1.

Embodiment 3

[0037] Embodiment 3: according to figure 1 The embodiment of the method of the present invention, the specific steps, process parameters, and medicament system are exactly the same as those in Example 1.

[0038] The process indexes of embodiment 1, embodiment 2 and embodiment 3 of the present invention are shown in Table 1.

[0039] Each embodiment result of table 1

[0040]

[0041]

[0042] Shown by the implementation result of embodiment 1, embodiment 2, embodiment 3 shown in table 1, adopt the inventive method, the copper concentrate copper grade that embodiment 1 obtains is 48.57%, copper recovery rate 88.34%, Fe: SiO 2 =1.11; The copper concentrate copper grade that embodiment 2 obtains is 46.77%, and copper recovery rate is 87.04%, Fe: SiO 2 =1.13; The copper concentrate copper grade that embodiment 3 obtains is 40.33%, and copper recovery rate is 85.20%, and Fe: SiO 2 = 1.17. The method of the invention has strong adaptability to ore, reliable product qualit...

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Abstract

The invention discloses a flotation technology of micro-fine particle inbuilt state copper ore. A staged grinding and separation process is adopted, rapid selection and re-grinding selection are adopted to treat and recycle copper ore in different dissociated states, lime serves as a slurry pH adjusting agent, sodium n-butylxanthate and butylamine dithiophosphate serve as a collecting agent, MIBC serves as a foaming agent, the lime and part of the collecting agent are added in a grinding machine, within the proper basicity range caused by the lime, through the selective collecting effect of the collecting agent on the copper, the recycling rate and the grade of the copper are ensured, and the silicon content of concentrates is limited. The technology is particularly suitable for treating copper sulphide ore with the fine inbuilt granularity and with the complex inbuilt relation with the silicate gangue. The reliable beneficiation technical guarantee is provided for the copper ore resource development, and efficient development and utilization can be promoted.

Description

technical field [0001] The invention relates to the technical field of metal ore beneficiation, in particular to a flotation process of fine-grained embedded copper ore. Background technique [0002] The fine particle size of embedded distribution is one of the main characteristics of refractory copper ore, and it is also one of the difficulties in its beneficiation. For example, a sedimentary rock-type layered copper deposit is a super-large, high-grade secondary copper sulfide deposit, and the copper minerals in the ore mainly exist in the form of chalcocite, copper blue and bornite and are embedded with other gangue minerals Complex, fine particle size of monomer dissociation. The average particle size of copper sulfide minerals in the ore is 0.005-0.03mm, and the particle size of the conjoined silicate gangue or inclusions is even smaller than 0.01mm, so the possibility of increasing the degree of dissociation is limited. In addition, gangue minerals are mainly quartz,...

Claims

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Application Information

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IPC IPC(8): B03B9/00B02C21/00B03D1/00B03D1/004B03D101/02B03D101/04B03D103/02
CPCB02C21/00B03B9/00B03D1/00B03D1/004B03D2201/02B03D2201/04B03D2203/02
Inventor 鲁军廖德华李广陈晓芳
Owner 厦门紫金矿冶技术有限公司
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