Beneficiation method for complex sulphide lead-zinc ore containing arsenic

A technology of arsenic lead sulfide and ore dressing method, applied in flotation, solid separation, etc., can solve the problems of reducing arsenic grade in concentrate and increasing economic benefits, achieve good promotion and application value, avoid serious pollution, and reduce lime consumption Effect

Active Publication Date: 2016-01-20
SHENYANG RES INST OF NONFERROUS METALS
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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 solve the problems existing in the complex arsenic-containing lead-zinc ore separation process in the prior art, and to improve the recovery rate of lead-zinc and associated silver and reduce the arsenic content in the lead-zinc concentrate by taking clean and environmentally friendly production as the basic principle. With the goal of improving economic benefits, after long-term research and a large number of tests, a technologically feasible, environmentally friendly, low-cost separation of lead-zinc-arsenic minerals and a complex arse

Method used

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Embodiment 1

[0050] The main metal minerals in a lead-zinc-silver polymetallic ore are galena, sphalerite, pyrite and arsenopyrite, and their oxides are less. The intercalation relationship between metal minerals in the ore is relatively complex, and the ore is mostly produced in the form of massive, dense massive, lumpy and disseminated. The disseminated particle size of galena and sphalerite is mainly coarse-grained intercalation, and the intercalation relationship between the two is relatively close, and there is a phenomenon of mutual wrapping. Sphalerite coexists with galena, pyrite, and arsenopyrite, and a small amount is wrapped in massive galena in the form of broken spots and residual nuclei, or it is fine-grained and star-pointed with galena and a small amount of other The sulfides are embedded in the gangue together. The arsenopyrite contained in the ore is well crystallized, and is replaced by sphalerite and pyrite, and some arsenopyrite is distributed in the cracks of sphaler...

Embodiment 2

[0064] There are many kinds of metal minerals in a certain lead-zinc ore, among which the main metal minerals are galena, pyrite, sphalerite and arsenopyrite, and the content of other metal minerals is small; the non-metal minerals are mainly quartz and kaolin. The main recovered elements are lead, zinc and silver.

[0065] The galena and sphalerite in the ore are distributed in coarse grains, and the galena is distributed in the gangue minerals in the form of other shapes, irregular shapes and aggregates in the ore, showing a disseminated structure. Galenite is mostly metasomatized with pyrite, arsenopyrite and sphalerite, presenting a metasomatized corrosion structure. Galena contains a small amount of pyrite particles, and galena is filled and cemented along the arsenopyrite fractures, showing a vein-like structure. At the same time, galena is contained in pyrite, poisonous ore and flash in zinc mines. It can be seen that galena is closely related to pyrite, arsenopyrite ...

Embodiment 3

[0080] The metal minerals in a lead-zinc ore are pyrite, sphalerite, galena, arsenopyrite, pyrrhotite, and a small amount of lead alum, chalcopyrite, etc.; gangue minerals mainly include diopside, quartz, Wollastonite, fluorite, actinolite, carbonate, etc., and some argillaceous minerals.

[0081] In the ore, galena is mainly produced in other shapes and aggregates, mainly coarse and fine particles, and a small amount of fine particles are distributed in the gaps and cracks of gangue minerals and gangue mineral particles. Galena is closely related to sphalerite, pyrite, and arsenopyrite. The former accounts for the latter three, and some of them wrap each other, but the particles are coarser; the oxidation of galena in the ore is stronger than that of sphalerite. See To the secondary copper orchid, lead vitriol replaces galena, forming a film-like reaction edge structure. The silver minerals in the ore include argentite and native silver, galena is the main carrier mineral of...

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Abstract

The invention discloses a beneficiation method for complex sulphide lead-zinc ore containing arsenic. The beneficiation method is characterized by comprising the steps that raw ore is added into a ball mill to be milled, lime, zinc sulfate, sodium sulfite and p-xylylenebis(n,n- diethyldithiocarbamate) are added after the milled raw ore enters a first stirring tank, and diethyldithiocarbamate, isoamylxanthate and terpenic oil are added into a second stirring tank; a combined inhibitor and a combined collector are added before first-time scavenging and second-time scavenging of lead floatation; the combined inhibitor and the combined collector are added before first-time lead concentration, second-time lead concentration and third-time lead concentration; zinc floatation is conducted on tailings obtained after lead floatation; the combined inhibitor and the combined collector are added before first-time scavenging and second-time scavenging of zinc floatation; and lime is added before each time zinc concentration is conducted. By the adoption of the beneficiation method, lead-zinc concentrate products qualified in arsenic content are obtained, the grade and yield of lead and zinc in lead concentrate can be increased, and the grade and yield of zinc in zinc concentrate can also be increased; highly toxic products such as sodium cyanide or oxidizing agents do not need to be added, serious pollution to the environment is avoided, and clean, environment-friendly and safe production is achieved.

Description

technical field [0001] The invention relates to a beneficiation method for lead-zinc sulfide ore, in particular to a beneficiation method for flotation complex arsenic-containing lead-zinc sulfide ore, which belongs to the technical field of sulfide ore flotation. Background technique [0002] At present, the main method to deal with lead-zinc sulfide ore is beneficiation method. Most of the lead-zinc sulfide ores are galena and sphalerite as the main minerals, and some lead-zinc sulfide ores are often densely symbiotic with pyrite, pyrrhotite, and arsenic minerals. The main arsenic minerals are arsenopyrite (FeAsS), orthorhombite (FeAs 2 ), copper arsenite, etc. They have similar formation conditions and some physical and chemical properties to lead-zinc sulfide minerals; therefore, when collectors are used to float lead-zinc sulfide minerals, arsenopyrite and other arsenic minerals are often mixed into the concentrate During pyrometallurgy, some arsenic will be converted...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/08B03D1/018B03D103/02
Inventor 于雪孟宪瑜陈新林
Owner SHENYANG RES INST OF NONFERROUS METALS
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