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A kind of combined inhibitor of zinc sulfide ore and its application

A technology combining inhibitors and zinc sulfide ore, which is applied in chemical instruments and methods, solid separation, flotation, etc., can solve the problems of high zinc content, large dosage of chemicals, and low recovery rate of zinc metal, so as to achieve low risk and high chemical efficiency. The effect of low cost and small investment

Active Publication Date: 2021-07-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency, green, economical and environmentally friendly combined inhibitor of zinc sulfide ore and its application, which is used to solve the problem of high zinc content in copper / lead concentrate products that are separated by flotation of complex polymetallic sulfide ores. Large, low zinc metal recovery conundrum

Method used

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  • A kind of combined inhibitor of zinc sulfide ore and its application
  • A kind of combined inhibitor of zinc sulfide ore and its application
  • A kind of combined inhibitor of zinc sulfide ore and its application

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Embodiment 1

[0024] A tin-copper-zinc polymetallic mine in Yunnan, the grade of tin in the ore is 0.42%, the grade of copper is 0.090%, and the grade of zinc is 0.53%. %. Phase analysis shows that copper and zinc in the ore mainly exist in the form of primary copper sulfide and zinc sulfide. The mineral composition of the mine is relatively complex. The metal minerals are mainly cassiterite, chalcopyrite and pyrrhotite, followed by arsenopyrite, sphalerite and a small amount of pyrite. Gangue minerals are mainly quartz, mica, feldspar, oblique zoisite and so on. Useful minerals are interbedded with medium and fine grains, and the intercalation relationship between minerals is extremely complicated. Chalcopyrite aggregates are rarely seen, mostly disseminated or fine-grained, while sphalerite is mostly wrapped with fine grains and microfine grains. Chalcopyrite. The raw ore contains a certain amount of mica and screen stone minerals, which have good buoyancy, seriously interfere with the...

Embodiment 2

[0044] In a silver-lead-zinc polymetallic sulfide mine in Sichuan, the main valuable metals available for recovery in the raw ore are silver, lead, and zinc, with grades of 60.12g / t, 1.31% and 5.44%, respectively, and the grade ratio of lead and zinc is 1: 4.2, containing 5.31% sulfur. The mineral composition is complex, the intercalation relationship is close, and the useful minerals are in medium and fine distribution. The main metal minerals are galena, sphalerite, pyrite, trace chalcopyrite, and the main gangue minerals are calcite, quartz barite and sericite. According to the phase analysis, lead mainly occurs in galena (92.04%), zinc mainly occurs in sphalerite (96.54%); silver mainly occurs in sulfide (51.59%) ), followed by silver, silver sulfide and elemental silver in silicates.

[0045] The inhibitory effect of the combined inhibitor on sphalerite in the lead priority flotation operation, the test process and the reagent system are as follows: figure 2 , the flo...

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Abstract

The invention discloses a combination inhibitor of zinc sulfide ore and its application. Its active components include polyepoxysuccinic acid (PESA), zinc sulfate and sodium sulfite, and the mass ratio of the three is (0.25-2):( 25~100): (10~50). According to the principle of mixed medicine, the present invention will be made of water-soluble small molecule carboxylic acid PESA and conventional inhibitor Na 2 SO 3 and ZnSO 4 Combining according to a certain mass ratio, through the synergistic effect between the agents, not only the dosage of the agents is lower than that when used alone, but the inhibitory performance is also significantly enhanced. The combined inhibitor can efficiently and selectively inhibit the activated iron / sphalerite, substantially does not affect the plankton of chalcopyrite / galena, and achieves the purpose of selective separation; the novel combined inhibitor of the present invention is composed of Water-soluble small molecule carboxylic acid PESA is used in combination with conventional inhibitors, the preparation of the agent is simple, and it is easy to implement in industry. At the same time, PESA is also an excellent water treatment agent, which can complex the heavy metal ions in the mineral processing wastewater and greatly reduce the difficulty of wastewater reuse. .

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a combined inhibitor of zinc sulfide ore and an application thereof. Background technique [0002] In recent years, due to the over-exploitation of mineral resources, the characteristics of "poor, fine and miscellaneous" resources have become increasingly prominent. In the complex polymetallic sulfide ore flotation separation system, chalcopyrite / galena has natural floatability, while iron / sphalerite has poor floatability. In theory, iron / sphalerite is easier to suppress. However, due to the complex intercalation relationship of useful minerals, fine intercalation particle size, and the surface oxidation of some sulfide ores and the existence of secondary copper ore, Cu will be produced during the grinding process. 2+ and Pb 2+ etc. unavoidable metal ions, it is difficult to separate chalcopyrite / galena from activated iron / sphalerite, and the amount of zi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/018B03C1/30B03D101/06B03D101/02B03D101/04B03D103/02
CPCB03C1/30B03D1/00B03D1/018B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 魏茜焦芬覃文庆杨聪仁刘维韩俊伟董留洋崔艳芳
Owner CENT SOUTH UNIV
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