Process for refining high-purity bismuth from bismuth-containing material generated from anode mud recovery

An anode slime and material technology, applied in the direction of photography process, photography auxiliary process, improvement of process efficiency, etc., can solve the problems of poor operating conditions, frequent process splitting, pollution of the environment, etc., achieve good impurity removal effect, and expand the scope of application , the effect of low recovery rate

Active Publication Date: 2010-11-17
郴州雄风环保科技有限公司
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Problems solved by technology

The process of preparing refined bismuth by fire method is complicated, and the operating temperature rises and falls repeatedly, high energy consumption, and frequent process separation. Especially, it needs to pass chlorine gas twice, pollutes the environment, and operates under harsh conditions

Method used

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  • Process for refining high-purity bismuth from bismuth-containing material generated from anode mud recovery
  • Process for refining high-purity bismuth from bismuth-containing material generated from anode mud recovery

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Embodiment Construction

[0044] The following is attached figure 1 The production process flowchart, will describe the present invention in detail with specific embodiment:

[0045] As the technical solution for realizing the present invention is: the process of extracting high-purity bismuth from the bismuth-containing material produced by anode slime recovery is realized in the following steps:

[0046] a. After natural drying, the bismuth-containing materials are crushed into agglomerates or lumps, and the diameter of the agglomerates or lumps is controlled to 30-120 mm; the crushed bismuth-containing materials and lead oxide powder, fluorite, iron filings, and coking coal are calculated according to 100: (7~15):(12~20):(8~10):(30~45) After the parts by weight ratio is mixed evenly, enter the three-section blast furnace for reduction smelting, so that the slag and metal produced are at a temperature of 1300~1500 Separation at high temperature of ℃; at high temperature in the three-section blast fu...

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Abstract

The invention relates to a process for refining high-purity bismuth from bismuth-containing materials generated from anode mud recovery, belonging to the technical field of processes of recovering smelting bismuth by combining a wet process and a pyrogenic process of non-ferrous metal. The process comprises the following steps of: firstly increasing the content of bismuth contained in the bismuth-containing materials to obtain crude bismuth by adopting an enrichment process; and then further refining and purifying the crude bismuth into the high-purity bismuth by adopting a selective accurate temperature-control smelting method according to different melting points of compounds between bismuth metal and impurity-containing metal. Compared with the prior art, the invention reduces the requirements for the content of the bismuth contained in raw materials and can realize the economic and high-efficiency recovery of the bismuth metal, refine the high-purity bismuth and reduce the environmental pollution.

Description

technical field [0001] The invention relates to a process for extracting high-purity bismuth from bismuth-containing materials produced by recovery of anode slime, and belongs to the technical field of combined recovery and smelting bismuth of non-ferrous metals by a wet process and a fire process. Background technique [0002] Bismuth is a rare metal. Bismuth has a wide range of applications, but it has very little stock in nature. Most of it is symbiotic with lead, tungsten and molybdenum deposits, and it has no mining value itself. Industrially, wet slag (antimony slag, bismuth slag), pyroprocess slag (primary slag, secondary slag), soot and other waste slag and ash will be produced during the production process of anode slime recovery and production of gold and silver precious metals. These waste slag materials and ashes contain bismuth metal, so the present invention is collectively referred to as bismuth-containing materials, because the composition of this bismuth-con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B30/06C25C1/22
CPCY02P10/20
Inventor 谭雄玉曹远平谭光华李跃林曹孝义
Owner 郴州雄风环保科技有限公司
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