Combined zinc collecting agent for flotation of lead-zinc sulfide ore and application thereof

A technology for flotation of lead-zinc and collectors, applied in flotation, solid separation, etc., can solve the problems of weak collecting ability of black powder, high pH of pulp, poor selectivity, etc., and achieve stable indicators, low price, and field application simple effect

Active Publication Date: 2020-09-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used sphalerite collectors mainly include xanthate, black powder and sulfur nitrogen. Xanthate has strong collection ability, but poor selectivity; ;Sulphur-nitrogen collection ability is strong, selectivity is good, and the dosage of chemicals is small
However, in the actual flotation of high-sulfur lead-zinc ore, the sulfur content is high, a large amount of lime needs to be added, the pH of the slurry is high, the zinc selection foam layer is thin, the foam is small and fine, and the impurity content of the zinc concentrate is relatively high. To improve the recovery rate, it is necessary to study a collector with stronger selectivity and collection for zinc sulfide ore

Method used

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  • Combined zinc collecting agent for flotation of lead-zinc sulfide ore and application thereof
  • Combined zinc collecting agent for flotation of lead-zinc sulfide ore and application thereof
  • Combined zinc collecting agent for flotation of lead-zinc sulfide ore and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A certain ore in Yunnan contains Pb 2.98%, Zn 2.79%, S 27.79%, Fe 24.83%, As 0.55%, Ag114.95g / t, which is a lead-zinc ore with high sulfur and silver content. Among the rock-forming components, the highest content is SiO 2 , about 18.62%, followed by Al 2 o 3 About 11.05%; CaO 3.99%, MgO 2.01%, K in other rock-forming components 2 O 1.16%, Na 2 O 0.073%. The main metal minerals in the ore are mainly pyrite (containing a small amount of marcasite), galena, sphalerite, a small or trace amount of limonite, white lead ore, lead alum, realgar, arsenopyrite, and smithsonite Ore, orpiment, chalcopyrite, copper blue, etc. Sphalerite is mainly in the form of heteromorphic grains embedded in the pyrite grains, and sphalerite can be seen locally replacing pyrite. Fine-grained chalcopyrite is commonly found in sphalerite, and pyrrhotite is occasionally found. Occasionally, sphalerite is surrounded by pyrite. The embedded particle size of sphalerite is mainly between 0.03-0.3...

Embodiment 2

[0062] A high-sulfur low-lead-zinc ore contains Pb 1.37%, Zn 3.43%, S 30.06%, Fe 28.88%, Cu 0.12%, Ag80.00%, As 0.03%, and the target minerals in the ore are mainly galena and sphalerite And associated silver minerals, other metal minerals with higher content are pyrite, magnetite and pyrrhotite, etc.; gangue minerals are mainly chlorite, hornblende, tremolite and mica. Sphalerite is mostly distributed in the form of agglomerates, dissemination, veins, and stars, and is mostly intersected by galena; some sphalerites are also irregularly wrapped with chalcopyrite and galena; a few Sphalerite wrapped metasomatous magnetite, pyrite.

[0063] The ore adopts a combined collector to select zinc, and the combined collector is composed of the following components in parts by weight: 20 parts of butyl ammonium black medicine, 35 parts of ethyl disulfide, and 45 parts of 2-aminothiophenol. When using combined collectors, mix butyl ammonium black drug, ethiazide, and 2-aminothiophenol e...

Embodiment 3

[0076] A high-sulfur and high-lead-zinc ore contains Pb 7.31%, Zn 6.66%, S 19.09%, Fe 14.02%, Cu 0.16%. The target minerals in the ore are mainly galena, sphalerite and pyrite, and a small amount of chalcopyrite , bornite, chalcocite and rhodochrosite; gangue minerals are mainly quartz and dolomite, a small amount of calcite and chlorite. Sphalerite is mostly semi-euhedral and other-shaped crystal particles, with a particle size of 2.5mm-0.01mm, and the size varies widely. It is more than pyrite and galena embedded to form sulfide aggregates. Among them, the larger crystals The pores inside the particles are developed and filled with fine pyrite and galena, and fine sphalerite is also filled in the pores of pyrite. Sphalerite has semi-euhedral grain structure, erosion structure, interstitial structure and emulsion structure.

[0077] The ore adopts a combined collector to select zinc, and the combined collector is composed of the following components in parts by weight: 10 pa...

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Abstract

The invention discloses a combined zinc collecting agent for flotation of lead-zinc sulfide ore and application thereof. The combined zinc collecting agent comprises the following active components inparts by weight: 10-30 parts of ammonium dibutyl dithiophosphate, 30-50 parts of ethyl thiocarbamate and 30-50 parts of 2-aminothiophenol. According to the efficient combined collecting agent for sphalerite flotation, the combined collecting agent is composed of ammonium dibutyl dithiophosphate, ethyl thiocarbamate and 2-aminothiophenol and is easy to obtain, low in price, small in dosage and free of pollution. The ammonium dibutyl dithiophosphate is weak in collecting capacity, but has foamability, high sulfur and nitrogen collecting capacity and certain lead sulfide ore and zinc sulfide orecollecting capacity; compared with a conventional collecting agent butyl xanthate, 2-aminothiophenol has good flotation effect of on marmatite even under the condition that copper ion activation is not used, and has poor lead sulfide ore flotation effect; however, 2-aminothiophenol is a weakly acidic compound, and cannot fully react with zinc sulfide ore when a pH value is relatively low; and therefore, the components of the combined collecting agent can supplement each other.

Description

technical field [0001] The invention belongs to the technical field of flotation of lead-zinc sulfide ore, and in particular relates to a combined zinc collector for flotation of lead-zinc sulfide ore and an application thereof. Background technique [0002] Zinc is a kind of silvery white slightly light blue metal, often combined with copper, tin, lead, etc. to form brass or aluminum, magnesium, copper, etc. Many fields; Another important use of zinc is galvanizing, which is used for electroplating and anticorrosion. Zinc compounds are used in the textile industry and in the manufacture of paints, dyes, pigments, etc. [0003] Sphalerite is one of the most important sources of zinc metal. About 90% of zinc production comes from sphalerite. Its chemical formula is ZnS. Sphalerite often has Fe elements in the form of isomorphic form during the geological ore-forming process of the deposit. Mixed, iron content greater than 6% is called iron sphalerite. The buoyancy of sphal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/014B03D1/02B03D1/08B03D101/02B03D103/02
CPCB03D1/014B03D1/02B03D1/082B03D1/087B03D2201/02B03D2203/02
Inventor 焦芬覃文庆杨聪仁韩俊伟魏茜胡陈强崔艳芳张政权徐乐
Owner CENT SOUTH UNIV
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