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Efficient comprehensive utilization method of arsenic and antimony in arsenic and antimony smoke

A soot and high-efficiency technology, applied in the field of high-efficiency comprehensive utilization of antimony, arsenic in arsenic and antimony fume, can solve the problems of secondary pollution, a large amount of waste liquid, high cost, etc., and achieve the effect of recycling, reducing the amount of materials and simplifying the process

Active Publication Date: 2017-11-21
红河绿地环保科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the huge amount of material output, not only the cost of transportation and treatment is high, but also a large amount of waste liquid is generated, causing secondary pollution

Method used

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  • Efficient comprehensive utilization method of arsenic and antimony in arsenic and antimony smoke
  • Efficient comprehensive utilization method of arsenic and antimony in arsenic and antimony smoke
  • Efficient comprehensive utilization method of arsenic and antimony in arsenic and antimony smoke

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Experimental program
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Effect test

Embodiment 1

[0021] The arsenic and antimony dust is classified by a hydrocyclone classification device, the flow rate is 800mL / min, and the feeding pressure is 0.03-0.2MPa. and element contents are shown in Table 1. Add ≤6.5μm fine powder dust obtained by classification into hot water at a liquid-solid ratio of 5:1, stir and leaching at 85°C for 60 minutes, and separate the solid and liquid after leaching; slowly add an oxidant at 3 vol% to the leaching solution, continue stirring for 60 minutes, and filter Obtain the oxidized liquid and oxidized slag; add an appropriate amount of sodium salt solution to the oxidized liquid, mix well, concentrate and crystallize under microwave conditions at 75°C, and centrifugally filter to obtain sodium arsenate crystals, and recycle the crystallization mother liquor; send sodium arsenate crystals to After being dried by microwave equipment at 105°C, it is exported as a product; the dust and oxide slag obtained by classification > 6.5 μm coarse powder a...

Embodiment 2

[0025] The arsenic and antimony fumes are classified by a vortex airflow classification device with a power of 2.5kW and a feeding rate of 8kg / h. According to the particle size, the arsenic and antimony fumes are divided into three particle size grades. The particle size distribution and element content See Table 2. Add hot water to the fine powder dust obtained by classification ≤5μm according to the liquid-solid ratio of 5:1, stir and leaching at 85°C for 60 minutes, and separate the solid and liquid after leaching; add an oxidizing agent at 3 vol% to the leaching liquid, stir continuously for 60 minutes, and filter to obtain the oxidized liquid and oxidation slag; add appropriate amount of sodium salt solution to the oxidized liquid, mix well, concentrate and crystallize under microwave conditions at 75°C, centrifugally filter to obtain sodium arsenate crystals, and recycle the crystallization mother liquor; send sodium arsenate crystals to microwave equipment After drying ...

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Abstract

The invention relates to an efficient comprehensive utilization method of arsenic and antimony in arsenic and antimony smoke and belongs to the technical field of non-ferrous metallurgy. The method comprises the specific steps that the arsenic and antimony smoke is subjected to stge treatment, fine powder smoke obtained through separation is put into hot water according to the formula that the liquid-solid ratio is 5:1, agitation leaching is conducted for 60 min at the temperature is 85 DEG C, and solid-liquid separation is conducted after leaching; an oxidizing agent is slowly added into leaching liquid, the volume percentage of the oxidizing agent is 3%, stirring is continuously conducted for 60 min, and arsenic-containing leaching post-liquid and antimony-containing leaching residues are obtained after filtering; a sodium salt solution is added into the leaching post-liquid, the mixture is subjected to low-temperature concentration and crystallization under the microwave condition after sufficient stirring, sodium arsenate crystals are obtained after centrifugal filtering, and crystallization mother liquor is used circularly; and the sodium arsenate crystals are sent to microwave drying equipment to be dried, and products are obtained after drying. According to the method, the arsenic and antimony smoke is subjected to stage treatment according to the grain size, enrichment and separation of arsenic and antimony can be achieved, operation is easy, and the cost is effectively reduced; and separated arsenic-enriched smoke is leached, refined and crystallized, arsenic products are formed for export sales, antimony-containing materials return to the procedure, and resource recycling is achieved.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metallurgy, and in particular relates to a method for efficient and comprehensive utilization of arsenic and antimony in arsenic and antimony dust. Background technique [0002] Arsenic and antimony fume is a kind of fume with high arsenic content produced in the process of pyroprocessing lead anode slime, and also contains a large amount of antimony, lead, cadmium and other valuable metals. Arsenic is a highly toxic substance that seriously pollutes the environment. Removing arsenic from arsenic and antimony dust and recovering other valuable metals is an effective way to eliminate arsenic damage and improve comprehensive resource recovery. However, due to the similar properties of arsenic and antimony, the separation and recovery of arsenic and antimony in high-arsenic and antimony dust has always been an important problem faced by non-ferrous smelting enterprises. [0003] At present, the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/02C22B30/02C22B30/04
CPCC22B7/006C22B7/02C22B30/02C22B30/04Y02P10/20
Inventor 谢容生王少龙朱永强张梦影韦加柱谭志敏张福靖吴开武杨鼐
Owner 红河绿地环保科技发展有限公司
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