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Zinc-sulfur separation and beneficiation method of pyrrhotite-rich zinc sulfide ore

A technology of pyrrhotite and ore dressing methods, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of difficult separation and inability to achieve effective separation of zinc and sulfur, so as to reduce environmental pollution and save the amount of chemicals , The effect of reducing the amount of ore

Active Publication Date: 2017-11-10
SHENYANG RES INST OF NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the ore contains a certain amount of copper oxide minerals or secondary copper, the zinc-sulfur minerals are activated so that the sphalerite and iron sulfide minerals have similar buoyancy, then the flotation method is used to separate zinc-sulfur It is very difficult. At this time, no matter whether it is sulfur-suppressed flotation zinc or zinc-sulfur flotation method, the purpose of effective separation of zinc and sulfur cannot be achieved.

Method used

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  • Zinc-sulfur separation and beneficiation method of pyrrhotite-rich zinc sulfide ore
  • Zinc-sulfur separation and beneficiation method of pyrrhotite-rich zinc sulfide ore
  • Zinc-sulfur separation and beneficiation method of pyrrhotite-rich zinc sulfide ore

Examples

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Effect test

Embodiment 1

[0020] The test ore is zinc-sulfur ore from a certain place in Fujian. The zinc-sulfur ore contains 1.25% zinc and 15.47% sulfur, of which sulfur in pyrrhotite accounts for 75% of the total sulfur. The technological process of separating pyrrhotite by weak magnetic separation—and then flotation zinc, the technical indicators obtained are shown in Table 1. The main technical parameters are: the grinding fineness is -0.075mm, accounting for 65%, the magnetic field strength is 1250 Gs, the pyrrhotite is firstly selected to obtain the magnetic sulfur concentrate, and the tailings of the magnetic separation are flotation through the process of first roughing, second sweeping and second refining zinc. Flotation process parameters are: roughing conditions: 1000 grams of lime, adjust the pH value of the slurry to 12, activator CuSO 4 100 grams, collector butyl xanthate 50 grams, foaming agent 2 # 20 grams of oil; the amount of various agents added in one sweep is: 500 grams of lime...

Embodiment 2

[0024] The test ore is a copper-zinc-sulfur ore in Mongolia. The tailings after copper flotation were used as test ore. The grade of zinc in the test sample is 4.53%, and the sulfur content is 12.48%, of which the sulfur in pyrrhotite accounts for 90%. Using weak magnetic separation to select pyrrhotite-re-flotation zinc process, the technical indicators obtained are shown in Table 2. The main technical parameters are: the magnetic field strength is 1200 Gs to first select pyrrhotite, and the tailings of magnetic separation are flotation zinc through the process of first roughing, second sweeping and second refining. Flotation process parameters are: roughing conditions: 1000 grams of lime, adjust the pH value of the slurry to 11.5, activator CuSO 4 100 grams, collector butyl xanthate 50 grams, foaming agent 2 # 20 grams of oil; the amount of various agents added in one sweep is: 500 grams of lime, CuSO 4 50 grams, butyl xanthate 25 grams, 2 # 10 grams of oil; the additio...

Embodiment 3

[0028] The test ore is a zinc-sulfur ore in Inner Mongolia. The zinc-sulfur ore contains 2.81% zinc and 20.90% sulfur. From the perspective of ore mineral composition, the main mineral is pyrrhotite, which accounts for 60.03% of the mineral content; followed by pyrite, which accounts for 10% of the mineral content. 5.46%; sphalerite accounts for 5.21% of the mineral volume. Using the technological process of magnetic separation of pyrrhotite - flotation of zinc - further flotation of sulfur, the technical indicators obtained are shown in Table 3. The main technical parameters are: the grinding fineness is -0.075mm, accounting for 70%, the magnetic field strength is 1100 Gs, the pyrrhotite concentrate is firstly selected, and the tailings of the magnetic separation are subjected to the flotation process of one rough, one sweep and two fine. Flotation process parameters are: roughing conditions: 1000 grams of lime, adjust the pH value of the pulp to 13, activator CuSO 4 120 gr...

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Abstract

A zinc-sulfur separation and beneficiation method for pyrrhotite-rich zinc sulfide ore, including: (1) ore preparation: the raw ore is crushed and then ground; (2) weak magnetic separation: the pyrrhotite-rich The zinc-sulfur slurry of iron ore is sent to the drum magnetic separator for weak magnetic separation to obtain weak magnetic concentrate and magnetic tail; (3) Zinc flotation: calculated per ton of raw ore, adding lime to the magnetic tailings to adjust the slurry pH value, add CuSO4 as an activator, add butyl xanthate as a collector, add 2# oil as a foaming agent for sphalerite roughing; then decide whether to Carry out step (4) sulfur flotation, that is, calculate per ton of raw ore, add VS to the zinc flotation tailings as an activator, add butyl xanthate as a collector, and add 2# oil as a foaming agent to carry out pyrite ore roughing. The invention optimizes the process, saves chemicals, reduces environmental pollution, and can obtain qualified sulfur concentrate and zinc concentrate.

Description

technical field [0001] The invention relates to a mineral processing method of zinc sulfide ore, in particular to a zinc-sulfur separation mineral processing method of pyrrhotite-rich zinc sulfide ore. The invention is more applicable when the ore contains a large amount of pyrrhotite, and belongs to the technical field of mineral processing. Background technique [0002] With the rapid development of my country's national economy, my country's external dependence on zinc metal has been increasing, and it has exceeded 30% at present. At the same time, because the reserves of high-grade and easy-to-recover zinc sulfide ores are continuously decreasing, the mineral processing and recovery of poor, fine, miscellaneous and difficult-to-handle zinc ores has been put on the agenda. The present invention relates to a refractory zinc sulfide ore rich in pyrrhotite. [0003] At present, the beneficiation and recovery methods of zinc sulfide-sulfur ore mainly include: zinc-sulfur se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00
Inventor 陈新林孟宪瑜马忠臣于雪高起鹏
Owner SHENYANG RES INST OF NONFERROUS METALS
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