CN102618731A - Fire arsenic removal method - Google Patents
Fire arsenic removal method Download PDFInfo
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- CN102618731A CN102618731A CN2012100870000A CN201210087000A CN102618731A CN 102618731 A CN102618731 A CN 102618731A CN 2012100870000 A CN2012100870000 A CN 2012100870000A CN 201210087000 A CN201210087000 A CN 201210087000A CN 102618731 A CN102618731 A CN 102618731A
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- arsenic
- composition brass
- white slag
- brass plate
- copper plate
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Abstract
A fire arsenic removal method relates to a method for removing arsenic in a miscellaneous copper plate generated by performing induction copper and arsenic removal on electrolyte and is characterized in that a arsenic removal process comprises: melting the miscellaneous copper plate, adding calcined lime and sodium carbonate which are reacted to generate white slag, and separating the generated white slag so as to remove the arsenic. The method for removing the arsenic in the miscellaneous copper plate includes: melting the miscellaneous copper plate, adding the calcined lime and the sodium carbonate to perform reaction, and separating and removing the formed slag where the arsenic enters. The arsenic removal method in a smelting process can reduce arsenic content in miscellaneous copper to below 0.2%, and removal rate of the arsenic reaches above 90%.
Description
Technical field
A kind of method of pyrogenic process dearsenification relates to a kind of removal methods of electrolytic solution being induced arsenic in the composition brass plate that the decopper(ing) dearsenification produces.
Background technology
In cathode copper electrolysis production process; Because copper ion concentration can be increasingly high in the electrolytic solution, owing to arsenic content in the copper anode plate is higher, carry out on the other hand on the one hand with electrolytic; Arsenic content also can be increasingly high in the electrolytic solution; In order to guarantee that copper ion concentration meets processing condition and cathode plate arsenic does not exceed standard, must regularly induce the decopper(ing) dearsenification to electrolytic solution, produce a large amount of composition brass plates thus.And in these composition brass plates except that main body is copper, also contain 1% ~ 3% the arsenic of having an appointment, in order to cash this part composition brass plate; Have to get into again pyrogenic process and carry out melting; Though the arsenic part of volatilizing is irreducible a lot of in fusion process, still brings the problem of arsenic for follow-up electrolysis.
Summary of the invention
The object of the invention is exactly the deficiency that exists to above-mentioned prior art, provides a kind of and can effectively make arsenic content in the composition brass, and the decreasing ratio of arsenic is high, satisfies the method that removes arsenic in the composition brass plate of follow-up electrolysis requirement.
The objective of the invention is to realize through following technical scheme.
A kind of method of pyrogenic process dearsenification is characterized in that its subtractive process is with after the fusing of composition brass plate, adds the reaction of unslaked lime and yellow soda ash and generates white slag, and the white slag that generates is separated and dearsenification.
The method of a kind of pyrogenic process dearsenification of the present invention, the weight that it is characterized in that adding unslaked lime is 2% ~ 5% of composition brass plate weight.
The method of a kind of pyrogenic process dearsenification of the present invention, the weight that it is characterized in that adding yellow soda ash is 0.2 ~ 0.4% of composition brass plate weight.
The method of a kind of pyrogenic process dearsenification of the present invention is characterized in that the time of reacting is 20 ~ 40min..
The method of a kind of pyrogenic process dearsenification of the present invention after the fusing of composition brass plate, adds the reaction of unslaked lime and yellow soda ash; Arsenic gets into to separate in the slag that forms and sloughs; Through the method for dearsenification in this fusion process, can make that arsenic content is reduced to below 0.2% in the composition brass, the decreasing ratio of arsenic reaches more than 90%.
Embodiment
A kind of method of pyrogenic process dearsenification after the fusing of composition brass plate, is pressed the yellow soda ash that 2 ~ 5% of composition brass weight adds unslaked lime and 0.2 ~ 0.4%; Stir with copper rod, after stopping to stir, the unslaked lime of adding and yellow soda ash form contains the arsenic slag and can slowly float to bath surface; Form the slag of white,, take out this part white slag through skimming; Arsenic content is reduced to below 0.2% in the composition brass, and the decreasing ratio of arsenic reaches more than 90%.
Embodiment 1
Drop into about 80kg composition brass in the 100kg intermediate frequency furnace, heating adds 16kg unslaked lime and 1.6kg yellow soda ash after melting fully; Stir with copper rod, wait bath surface to float white slag and when no longer increasing, take off this part white slag out; Sampling shrend post analysis is arsenic content wherein, and arsenic content is 0.18%.
Embodiment 2
Drop into about 80kg composition brass in the 100kg intermediate frequency furnace, heating adds 24kg unslaked lime and 1.6kg yellow soda ash after melting fully; Stir with copper rod, wait bath surface to float white slag and when no longer increasing, take off this part white slag out; Sampling shrend post analysis is arsenic content wherein, and arsenic content is 0.18%.
Embodiment 3
Drop into about 80kg composition brass in the 100kg intermediate frequency furnace, heating adds 40kg unslaked lime and 1.6kg yellow soda ash after melting fully; Stir with copper rod, wait bath surface to float white slag and when no longer increasing, take off this part white slag out; Sampling shrend post analysis is arsenic content wherein, and arsenic content is 0.16%.
Embodiment 4
Drop into about 80kg composition brass in the 100kg intermediate frequency furnace, heating adds 40kg unslaked lime and 1.6kg yellow soda ash after melting fully; Stir with copper rod, wait bath surface to float white slag and when no longer increasing, take off this part white slag out; Sampling shrend post analysis is arsenic content wherein, and arsenic content is 0.15%.
Embodiment 5
Drop into about 80kg composition brass in the 100kg intermediate frequency furnace, heating adds 40kg unslaked lime and 2.4kg yellow soda ash after melting fully; Stir with copper rod, wait bath surface to float white slag and when no longer increasing, take off this part white slag out; Sampling shrend post analysis is arsenic content wherein, and arsenic content is 0.12%.
Embodiment 6
Drop into about 80kg composition brass in the 100kg intermediate frequency furnace, heating adds 40kg unslaked lime and 3.2kg yellow soda ash after melting fully; Stir with copper rod, wait bath surface to float white slag and when no longer increasing, take off this part white slag out; Sampling shrend post analysis is arsenic content wherein, and arsenic content is 0.10%.
Claims (4)
1. the method for a pyrogenic process dearsenification is characterized in that its subtractive process is with after the fusing of composition brass plate, adds the reaction of unslaked lime and yellow soda ash and generates white slag, and the white slag that generates is separated and dearsenification.
2. a kind of method that removes arsenic in the composition brass plate according to claim 1, the weight that it is characterized in that adding unslaked lime is 2% ~ 5% of composition brass plate weight.
3. a kind of method that removes arsenic in the composition brass plate according to claim 1, the weight that it is characterized in that adding yellow soda ash is 0.2% ~ 0.4% of composition brass plate weight.
4. a kind of method that removes arsenic in the composition brass plate according to claim 1 is characterized in that the time of reacting is 20 ~ 40min..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100870000A CN102618731A (en) | 2012-03-29 | 2012-03-29 | Fire arsenic removal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100870000A CN102618731A (en) | 2012-03-29 | 2012-03-29 | Fire arsenic removal method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102618731A true CN102618731A (en) | 2012-08-01 |
Family
ID=46558931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100870000A Pending CN102618731A (en) | 2012-03-29 | 2012-03-29 | Fire arsenic removal method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102618731A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634679A (en) * | 2014-12-17 | 2015-05-20 | 国家电网公司 | Method for measuring P91 steel weld brinell hardness |
| CN115652102A (en) * | 2022-10-26 | 2023-01-31 | 铜陵有色金属集团股份有限公司 | Method for treating arsenic slag produced in copper smelting process of austenite furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3262773A (en) * | 1962-02-22 | 1966-07-26 | Norddeutsche Affinerie | Process for the removal of arsenic, antimony, tin and other acid oxide producing impurities from copper |
| JPS59205429A (en) * | 1983-05-02 | 1984-11-21 | Nippon Mining Co Ltd | Method for purifying black copper |
| CN1290759A (en) * | 2000-10-26 | 2001-04-11 | 罗广福 | Method of treating arsenic alkaline slag from antimony smelting |
| JP2003003220A (en) * | 2001-06-21 | 2003-01-08 | Dowa Mining Co Ltd | Flux for smelting copper and method for smelting copper |
-
2012
- 2012-03-29 CN CN2012100870000A patent/CN102618731A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3262773A (en) * | 1962-02-22 | 1966-07-26 | Norddeutsche Affinerie | Process for the removal of arsenic, antimony, tin and other acid oxide producing impurities from copper |
| JPS59205429A (en) * | 1983-05-02 | 1984-11-21 | Nippon Mining Co Ltd | Method for purifying black copper |
| CN1290759A (en) * | 2000-10-26 | 2001-04-11 | 罗广福 | Method of treating arsenic alkaline slag from antimony smelting |
| JP2003003220A (en) * | 2001-06-21 | 2003-01-08 | Dowa Mining Co Ltd | Flux for smelting copper and method for smelting copper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634679A (en) * | 2014-12-17 | 2015-05-20 | 国家电网公司 | Method for measuring P91 steel weld brinell hardness |
| CN115652102A (en) * | 2022-10-26 | 2023-01-31 | 铜陵有色金属集团股份有限公司 | Method for treating arsenic slag produced in copper smelting process of austenite furnace |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |