CN101798630A - Method for extracting coarse bismuth from low-grade bismuth oxychloride slag - Google Patents
Method for extracting coarse bismuth from low-grade bismuth oxychloride slag Download PDFInfo
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- CN101798630A CN101798630A CN200910311608A CN200910311608A CN101798630A CN 101798630 A CN101798630 A CN 101798630A CN 200910311608 A CN200910311608 A CN 200910311608A CN 200910311608 A CN200910311608 A CN 200910311608A CN 101798630 A CN101798630 A CN 101798630A
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- bismuth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses a method for extracting coarse bismuth from low-grade bismuth oxychloride slag. The aim of the invention is to recover the coarse bismuth from the low-grade bismuth oxychloride slag by selective reduction-matte smelting, prepare the refined bismuth by refining the coarse bismuth by a dry method, improve the comprehensive recovery of valuable metals of bismuth, lead and copper, reduce the consumption of auxiliary materials and lower the cost. The method is characterized in that: the low-grade bismuth oxychloride slag is mixed with coke, soda and pyrite; the mixture is placed in a rotary furnace for smelting to obtain the coarse bismuth, alkali wastes, copper matte and smoke gas; the alkali wastes is subjected to lead recovery treatment, the copper matte is subjected to copper recovery treatment, and the smoke gas is returned to the rotary furnace for smelting. The method is mainly applied in domestic non-ferrous metal smelting enterprises for extracting the coarse bismuth from the low-grade bismuth oxychloride slag and then preparing the refined bismuth.
Description
Technical field
The present invention relates to a kind of method of extracting thick bismuth, relate in particular to a kind of method of from low-grade bismuth oxychloride slag, extracting thick bismuth.
Background technology
The anode sludge of electrolytic lead refining output is comprehensively reclaimed the lower bismuth oxychloride slag of grade of output, be that bi content is 8-16%, based on antimony oxychloride and chlorine oxygen bismuth and contain more lead, copper, the mixture of valuable metals such as silver, in the existing smelting process, over reduction appears in reducing smelting process easily, cause thick bismuth grade low, the foreign matter content height, do not reach the consequence of bismuth refining requirement, and when making sulfonium, from copper matte regulus, take away a large amount of bismuth metals, cause the loss of bismuth, influence the direct yield of bismuth, adopt the mixed smelting rule need consume high-grade bismuth sulfide concentrate, cause loss economically.
Summary of the invention
The object of the present invention is to provide a kind of method of from low-grade bismuth oxychloride slag, extracting thick bismuth, it is selective reduction matte smelting method, it is applicable to from the high bismuth oxychloride slag of bi content low (8%-16%), foreign matter content extracts thick bismuth, can satisfy and then prepare the requirement of smart bismuth, and can reduce the consumption of coke, improve the direct yield of bismuth, reduce production costs.
For achieving the above object, technical solution of the present invention is: a kind of method of extracting thick bismuth from low-grade bismuth oxychloride slag, it is characterized in that: this method is low-grade bismuth oxychloride slag is mixed with coke, soda ash, sulfurous iron ore and to place the converter melting, the thick bismuth of output, alkaline residue, copper matte regulus and flue dust, thick bismuth send pyrorefining system smart bismuth, alkaline residue is sent to and is reclaimed lead, and copper matte regulus is sent to recovery copper, and flue dust then returns the converter melting.
Described coke consumption is the 2-6% of bismuth oxychloride slag weight.
The consumption of described sulfurous iron ore is the 6-8% of bismuth oxychloride slag weight.
Beneficial effect of the present invention is:
1, the selective reduction matte smelting of the present invention's employing, the control reduction degree, from low-grade bismuth oxychloride slag, reclaim the method for thick bismuth, compare with traditional method, when handling bismuth oxychloride slag, auxiliary material (coke, soda ash, sulfurous iron ore) consumption reduces, and cost reduces, the comprehensive recovery height of each valuable metal such as bismuth, lead, copper, this method are particularly useful for extracting thick bismuth from the high bismuth oxychloride slag of bi content low (8-16%), foreign matter content.
2, method of the present invention as raw material, adopts soda ash (Na with low-grade bismuth oxychloride slag
2CO
3) be flux, pearl white is decomposed in smelting process after, chlorine is fixed in the alkaline residue.Because bismuth-containing is low in the raw material, impurity height such as cupric, antimony, lead, the complexity difference according to each metal is reduced adopts the selective reduction matte smelting, makes bismuth preferentially be reduced into metal than partial impurities; Add sulfurous iron ore (FeS simultaneously
2) make sulfonium and make most copper form copper matte regulus.Reach the smelting purpose of output, reach the requirement that smart bismuth is produced in thick bismuth refining then than the thick bismuth and the preliminary copper removal of higher-grade.
Description of drawings
Accompanying drawing is a process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention and embodiment thereof are described in further detail.
Referring to accompanying drawing, method of the present invention is to extract the method for thick bismuth from low-grade bismuth oxychloride slag, it is characterized in that: this method is low-grade bismuth oxychloride slag is mixed with coke, soda ash, sulfurous iron ore and to place the converter melting, the thick bismuth of output, alkaline residue, copper matte regulus and flue dust, thick bismuth send pyrorefining system smart bismuth, alkaline residue is sent to and is reclaimed lead, and copper matte regulus is sent to recovery copper, and flue dust then returns the converter melting.
Described coke consumption is the 2-6% of bismuth oxychloride slag weight.
The consumption of described sulfurous iron ore is the 6-8% of bismuth oxychloride slag weight.
Provide embodiments of the invention below
Embodiment 1
Adopt method of the present invention to handle bismuth oxychloride slag, its main component (w%) is: Sb9.21, Bi12.15, Cu4.20, Pd9.74, Ag0.21, adopt the selective reduction matte smelting, be reflected in the converter and carry out, furnace temperature is 1200 ℃, and the coke addition is 4% of a bismuth oxychloride slag weight (dry weight, down together), the yellow soda ash addition is 6%, and the sulfurous iron ore addition is 8%.With thick bismuth, the slag metering that obtains, sample examination, the content of bismuth is 56.53% in the thick bismuth, thick bismuth obtains smart bismuth through pyrorefining.The grade of smart bismuth is 99.99%.The rate of recovery that goes out bismuth as calculated is 80.11%.
Embodiment 2
Low-grade bismuth oxychloride slag, its main component (w%) is: Sb22.18, Bi21.38, Cu2.30, Pd2.67, Ag0.02, adopt selective reduction-matte smelting, being reflected at converter carries out, furnace temperature is 1200 ℃, the coke addition is 6%, and the yellow soda ash addition is 6%, and the sulfurous iron ore addition is 6.5%.With thick bismuth, the slag metering that obtains, sample examination, the content of bismuth is 61.19% in the thick bismuth, refining obtains smart bismuth to thick bismuth through bismuth.The grade of smart bismuth is 99.99%, and the rate of recovery that goes out bismuth as calculated is 85.24%.
Embodiment 3
Low-grade bismuth oxychloride slag, its main component (w%) is: Sb28.41, Bi10.66, Cu3.06, Pd2.79, Ag0.026, adopt selective reduction-matte smelting, be reflected in the converter and carry out, furnace temperature is 1200 ℃, the coke addition is 2%, and the yellow soda ash addition is 6%, and the sulfurous iron ore addition is 6%.To thick bismuth, the slag metering that obtains, sample examination, the content of bismuth is 63.27% in the thick bismuth, refining obtains smart bismuth to thick bismuth through bismuth.The grade of smart bismuth is 99.99%.The rate of recovery that goes out bismuth as calculated is 71.04%.
Claims (3)
1. method of from low-grade bismuth oxychloride slag, extracting thick bismuth, it is characterized in that: this method is low-grade bismuth oxychloride slag is mixed with coke, soda ash, sulfurous iron ore and to place the converter melting, the thick bismuth of output, alkaline residue, copper matte regulus and flue dust, thick bismuth send pyrorefining to produce smart bismuth, alkaline residue is sent to and is reclaimed lead, copper matte regulus is sent to recovery copper, and flue dust then returns the converter melting.
2. by the method for the thick bismuth of the described extraction of claim 1, it is characterized in that described coke consumption is the 2-6% of bismuth oxychloride slag weight.
3. by the method for the thick bismuth of the described extraction of claim 1, the consumption that it is characterized in that described sulfurous iron ore is the 6-8% of bismuth oxychloride slag weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910311608A CN101798630A (en) | 2009-12-16 | 2009-12-16 | Method for extracting coarse bismuth from low-grade bismuth oxychloride slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910311608A CN101798630A (en) | 2009-12-16 | 2009-12-16 | Method for extracting coarse bismuth from low-grade bismuth oxychloride slag |
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| CN101798630A true CN101798630A (en) | 2010-08-11 |
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| CN200910311608A Pending CN101798630A (en) | 2009-12-16 | 2009-12-16 | Method for extracting coarse bismuth from low-grade bismuth oxychloride slag |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041394A (en) * | 2010-12-30 | 2011-05-04 | 郴州市金贵银业股份有限公司 | Process for producing refined bismuth by utilizing bismuth oxychloride |
| CN103243225A (en) * | 2013-05-16 | 2013-08-14 | 中南大学 | Method for selectively separating bismuth and lead in lead and bismuth concentrate by smelting in bath |
| CN109022812A (en) * | 2018-10-24 | 2018-12-18 | 郴州市金贵银业股份有限公司 | A method of refined bismuth and refined copper are recycled from high-copper bismuth slag |
| CN113293296A (en) * | 2021-05-31 | 2021-08-24 | 中伟新材料股份有限公司 | Method for producing low grade nickel matte by melting, reducing and vulcanizing nickel oxide ore |
-
2009
- 2009-12-16 CN CN200910311608A patent/CN101798630A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041394A (en) * | 2010-12-30 | 2011-05-04 | 郴州市金贵银业股份有限公司 | Process for producing refined bismuth by utilizing bismuth oxychloride |
| CN102041394B (en) * | 2010-12-30 | 2012-12-26 | 郴州市金贵银业股份有限公司 | Process for producing refined bismuth by utilizing bismuth oxychloride |
| CN103243225A (en) * | 2013-05-16 | 2013-08-14 | 中南大学 | Method for selectively separating bismuth and lead in lead and bismuth concentrate by smelting in bath |
| CN109022812A (en) * | 2018-10-24 | 2018-12-18 | 郴州市金贵银业股份有限公司 | A method of refined bismuth and refined copper are recycled from high-copper bismuth slag |
| CN109022812B (en) * | 2018-10-24 | 2020-02-11 | 郴州市金贵银业股份有限公司 | Method for recovering refined bismuth and refined copper from high-copper bismuth slag |
| CN113293296A (en) * | 2021-05-31 | 2021-08-24 | 中伟新材料股份有限公司 | Method for producing low grade nickel matte by melting, reducing and vulcanizing nickel oxide ore |
| CN113293296B (en) * | 2021-05-31 | 2024-04-26 | 中伟新材料股份有限公司 | Method for producing low nickel matte by smelting, reducing and vulcanizing nickel oxide ore |
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Open date: 20100811 |