Flotation method of brass ore-containing complex lead-zinc sulphide ore
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A chalcopyrite type, sulfide ore technology, applied in flotation, solid separation, etc., to achieve the effect of no pollution to the environment, high recovery rate, and beneficial to recycling
Inactive Publication Date: 2010-08-11
CENT SOUTH UNIV +1
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[0008] In order to overcome the shortcomings of the current existing chalcopyrite-containing complex lead-zinc sulfide ore flotation process, aiming at the difficult problem of flotation separation of chalcopyrite-containing and lead-zinc sulfide minerals, a method of guaranteeing copper and lead concentrate is proposed. ore grade and higher recovery rate, and a method for flotation separation of chalcopyrite-containing complex lead-zinc sulfide ores to reduce environmental pollution
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Embodiment 1
[0030] A chalcopyrite-bearing complex lead-zinc sulfide ore in Yunnan. The main metal minerals of this ore are chalcopyrite, galena, sphalerite and pyrite. The main gangue minerals are quartz, calcite and so on. The results of the multi-element analysis of the raw ore are shown in Table 1.
[0031] Table 1 Multi-element analysis of raw ore
[0032]
[0033] use as figure 1 Shown technological process, concrete technological parameter is as follows:
[0034] ① Grinding process: add lime to keep the pH value at 10, add 300g / t raw ore of sodium pyrosulfite, and adjust the pulp potential to 220mV relative to the hydrogen standard potential. Add 500g / t raw ore of zinc sulfate, 10g / t raw ore of ethyl xanthate formate, and 10g / t raw ore of ethyl disulfide. Grinding is carried out with a wet ball mill, and the particle size of the grinding product is -0.074mm, accounting for 65%.
[0035] ②Mixed flotation of copper-lead minerals: keep the pH of the pulp at pH=10, add 10g / t raw...
Embodiment 2
[0045] A chalcopyrite-bearing complex lead-zinc sulfide ore in Hunan, the main metal minerals of this ore are chalcopyrite, galena, sphalerite and pyrite. The main gangue minerals are quartz, calcite and so on. The results of the multi-element analysis of the raw ore are shown in Table 2.
[0046] Table 2 Multi-element analysis of raw ore
[0047]
[0048] use as figure 1 Shown technological process, concrete technological parameter is as follows:
[0049] ① Grinding process: Add lime to keep the pH value at 11, add 500g / t raw ore of sodium pyrosulfite, and adjust the pulp potential to 260mV relative to the hydrogen standard potential. Add 700g / t raw ore of zinc sulfate, 20g / t raw ore of ethyl xanthate formate, and 20g / t raw ore of ethyl disulfide. Grinding is carried out with a wet ball mill, and the particle size of the grinding product is -0.074mm, accounting for 70%.
[0050] ②Mixed flotation of copper-lead minerals: keep the pH of the pulp at pH=11, add 10g / t raw ...
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Abstract
The invention discloses a flotation method of a brass ore-containing complex lead-zinc sulphide ore, which comprises the steps of: adjusting the pH value to be 10-11 in the process of ore grinding; adding ore pulp electric potential regulating agent-sodium pyrosulfite to adjust the electric potential of the ore pulp to be at 220-260mV (relative to hydrogen standard potential); adding zinc sulfate, ethoxy-dithioformicacid ethyl formate and ethyl thio carbamate grinding ore; performing one roughing, one scavenging and two selecting to enrich copper-lead mineral by means of mixing and floating and to form into copper-lead mixed concentrate; performing reagent desorption to the copper-lead mixed concentrate by adding active carbon; adding potassium peroxydisulfate and carboxymethyl starch to restrain lead-containing mineral in the copper-lead mixed concentrate such as galena and the like; performing one roughing, one scavenging and three selecting to obtain copper concentrate; adjusting the pH value of tailings after recovering copper mineral by floating the copper-lead mixed concentrate to be 9.0; adding sodium pyrosulfite, ethyl thio carbamate and butyl ether alcohol; and performing one roughing, one scavenging and two selecting to obtain lead concentrate. The method guarantees the grade of the copper and the lead concentrate, and reduces the environmental pollution.
Description
technical field [0001] The invention relates to the field of mineral flotation, and relates to a method for flotation separation of chalcopyrite-containing complex lead-zinc sulfide ores. Background technique [0002] my country's mineral resources are characterized by low grade, mostly small and medium-sized mines, and complex composition. In Southwest my country, there is a complex lead-zinc sulfide ore containing chalcopyrite with relatively large reserves, containing 0.3-0.5% copper, 2-3% lead, and 3-4% zinc. It has high sulfur content and high oxidation rate. The characteristics of 5-10%, it is difficult to separate copper minerals and lead-zinc minerals by flotation when using conventional flotation methods, and the content of chalcopyrite in the produced lead concentrate is relatively high. The reduction of copper grade and the increase of copper grade have seriously affected the normal production of the smelter and increased the production cost. [0003] At present, ...
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