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Combined inhibitor for zinc sulfide ore and application thereof

A combination inhibitor and zinc sulfide ore technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problems of high zinc content, low recovery rate of zinc metal, large dosage of chemicals, etc., to achieve low risk and low investment The effect of small size and low drug cost

Active Publication Date: 2020-09-29
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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  • Combined inhibitor for zinc sulfide ore and application thereof
  • Combined inhibitor for zinc sulfide ore and application thereof
  • Combined inhibitor for zinc sulfide ore and application thereof

Examples

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Effect test

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 silicate.

[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 flot...

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Abstract

The invention discloses a combined inhibitor for zinc sulfide ore and application thereof. The combined inhibitor comprises the following active components: polyepoxysuccinic acid (PESA), zinc sulfateand sodium sulfite in a mass ratio of (0.25-2): (25-100): (10-50). According to the principle of mixed medication, the water-soluble micromolecular carboxylic acid (PESA) and conventional inhibitorsincluding Na2SO3 and ZnSO4 are combined according to the certain mass ratio, and through the synergistic effect of the agents, the dosage of the combined inhibitor is reduced compared with the dosagesof the agents used alone, and the inhibition performance of the combined inhibitor is also remarkably enhanced. The combined inhibitor can efficiently and selectively inhibit activated iron / sphalerite, basically does not influence flotation of chalcopyrite / galena, and achieves the purpose of selective separation; the novel combined inhibitor is formed by combining the PESA and the conventional inhibitors, and is simple to prepare and easy to industrially implement; and the PESA is an excellent water treatment agent and can complex heavy metal ions in beneficiation wastewater, so the difficulty of wastewater reuse is greatly reduced.

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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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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