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Combined inhibitor for flotation separation of copper-lead sulphide ore and application of combined inhibitor

A combination inhibitor and lead sulfide ore technology, applied in flotation, solid separation, etc., can solve the problems of unfriendly environment, high lead mutual content, large amount of lead inhibitor, etc., to reduce difficulty and treatment cost, water solubility Good results

Active Publication Date: 2021-02-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of high toxicity and unfriendly environment in traditional inhibitors in the current separation process of copper and lead, the purpose of the present invention is to provide a combination inhibitor of high-efficiency, green and environment-friendly lead sulfide and its application to solve the problem of copper-lead sulfide ore flotation. The separated copper concentrate contains high lead content, the amount of lead inhibitor is large, and the recovery rate of lead in lead concentrate is low.

Method used

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  • Combined inhibitor for flotation separation of copper-lead sulphide ore and application of combined inhibitor
  • Combined inhibitor for flotation separation of copper-lead sulphide ore and application of combined inhibitor
  • Combined inhibitor for flotation separation of copper-lead sulphide ore and application of combined inhibitor

Examples

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Effect test

Embodiment 1

[0032] In a complex copper-lead-zinc mine in Inner Mongolia, the raw ore contains 0.45% copper, 2.59% lead, and 3.35% zinc. Copper in the ore mainly exists in the form of primary copper sulfide and secondary copper sulfide, copper mainly exists in the form of chalcopyrite, and lead mainly exists in the form of lead sulfide. The intercalation of copper minerals and lead minerals is uneven in thickness, and their intercalation and symbiosis relationship is complex. The secondary copper ions in the ore produce copper ions during the grinding process, which activates some lead minerals and makes them more floatable, making it very difficult to separate copper and lead.

[0033] The sorting of copper and lead in this embodiment adopts the process flow of copper and lead mixed flotation-copper and lead separation. Raw ore is ground to -74μm by wet ball milling to account for 70%, then lime 1500g / t, zinc inhibitor zinc sulfate 1000g / t and sodium sulfite 500g / t, collector No. 25 blac...

Embodiment 2

[0056] A complex copper-lead-zinc polymetallic mine in Sichuan, the raw ore contains 0.38% copper, 2.65% lead, 4.65% zinc, 8.46% sulfur, and 116.64g / t silver, with high economic value. The copper in the ore is mainly primary copper sulfide ore, followed by secondary copper sulfide ore, free copper oxide and combined copper oxide ore. Lead sulfide is mainly galena. Copper and lead minerals are closely symbiotic, interpenetrated and wrapped, and the particle size of the embedded distribution is uneven. Gangue minerals are mainly quartz, mica, calcite, and a small amount of chlorite. Mica minerals are easy to muddy during the grinding process. At the same time, due to the high content of secondary copper sulfide, the dissolved copper ions activate galena, making it very difficult to separate copper and lead.

[0057] The sorting of copper and lead in this embodiment adopts the process flow of copper and lead mixed flotation-copper and lead separation. The raw ore is ground to ...

Embodiment 3

[0072] A complex copper-lead-zinc polymetallic mine in Yunnan, the grade of copper in the ore is 0.84%, the grade of lead is 2.51%, and the grade of zinc is 3.01%. Copper occurring in chalcopyrite accounts for 85.21% of the total copper in the ore. The lead in galena accounts for 89.34% of the total lead in the ore. The symbiotic relationship between copper, lead and zinc minerals is close. It is common for copper sulfide ores to be distributed in fine veins or sparsely disseminated in quartz cracks. The origin of galena is different from that of primary copper sulfide, and it is not closely related to the co-generation of pyrite and pyrrhotite, but the phenomenon of fragmentation is common, and lead is prone to over-crushing during the grinding process, and galena Closely related to clay minerals. The separation of copper and lead in this mine is more difficult.

[0073] The sorting of copper and lead in this embodiment adopts the process flow of copper and lead mixed flo...

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Abstract

The invention discloses a combined inhibitor for separating copper-lead sulphide ore and application of the combined inhibitor. The combined inhibitor comprises the following active components: ferricchloride and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) in a mass ratio of (0.5-6): (2-40). According to a mixed medication principle, ferric chloride and PBTCA are combined according to thecertain mass ratio to form the lead inhibitor HQ-Pb; through the synergistic effect among reagents, the HQ-Pb can strongly and selectively inhibit galena, but basically does not influence the flotation of chalcopyrite; the PBTCA and ferric chloride in the combined inhibitor disclosed by the invention are non-toxic and pollution-free; the problem that a traditional galena inhibitor, namely dichromate is highly toxic and has great harm to the environment and human bodies is effectively avoided; and PBTCA in the combined inhibitor is an excellent water treatment agent, has good water solubility,can be complexed with heavy metal ions in beneficiation wastewater, and can effectively reduce the difficulty of wastewater reuse and treatment cost.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a combined inhibitor for the separation of copper-lead sulfide ore and an application thereof. Background technique [0002] Copper, lead, and zinc, as the main metal mineral products related to the national economy and people's livelihood, can be used in many fields of industrial and agricultural production. With the development of the economy, the large-scale mining and utilization of high-grade copper-lead-zinc polymetallic mineral resources has made the resources increasingly scarce and difficult to deal with. Because chalcopyrite and galena have very similar buoyancy, and the intercalation and symbiosis relationship between minerals is complex, and the intercalation particle size (micro) is fine, it is very difficult to separate. Copper-lead separation has always been a research topic in flotation at home and abroad. important topic. [0003] In rece...

Claims

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Application Information

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IPC IPC(8): B03D1/018C22B1/00C22B15/00C22B13/00B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02C22B1/00C22B13/04C22B15/0004
Inventor 焦芬魏茜覃文庆杨聪仁刘维韩俊伟董留洋
Owner CENT SOUTH UNIV
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