CN1093755A - Safety dearsenicating technology for high-arsenic material - Google Patents
Safety dearsenicating technology for high-arsenic material Download PDFInfo
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- CN1093755A CN1093755A CN94101885A CN94101885A CN1093755A CN 1093755 A CN1093755 A CN 1093755A CN 94101885 A CN94101885 A CN 94101885A CN 94101885 A CN94101885 A CN 94101885A CN 1093755 A CN1093755 A CN 1093755A
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- Prior art keywords
- arsenic
- salt
- acid
- weak acid
- safety
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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
- Y02P10/20—Recycling
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- Removal Of Specific Substances (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Safety dearsenicating technology for high-arsenic material of the present invention relates to metallurgy and takes off general labourer's skill, the method for particularly removing the arsenic element in the arsenic-containing material.Characteristics of the present invention are that chippy high-arsenic material and the acid salt of weak acid that is weaker than arsenic acid are mixed, and carry out the roasting reaction, generate water miscible arsenic salt and other oxide compound, add entry in discharging, isolate each composition, crystallization arsenic salt from filtrate.This processing unit expense is low, and is simple to operate, and arsenic does not enter gas phase, so can better solve arsenic to the pollution of environment with to the problem of the threat of operator safety.
Description
The invention belongs to a kind of metallurgy industry material and take off assorted isolating method, the method for particularly removing the arsenic element in the arsenic-containing material.
In China's metallurgy industry, dearsenification for high-arsenic material, the common practice is material to be put into stoving oven carry out oxidizing roasting and remove arsenic, this method can produce white arsenic (arsenic) gas in roasting, this violent in toxicity is quite big to environment and operator's harm, therefore to the having relatively high expectations of operators'skills and dust collection device, the expense of equipment is also higher, and risk is still very big.
The technology that the purpose of this invention is to provide a kind of high-arsenic material safety dearsenicating, its corresponding apparatus expense is lower, simple to operate, arsenic does not enter gas phase, and safety coefficient is bigger.
Implementation of the present invention is as follows: chippy high-arsenic material and the acid salt of weak acid that is weaker than arsenic acid are mixed, carry out the roasting reaction, generate water miscible arsenic salt and other oxide compound, add entry in discharging, isolate each composition, crystallization arsenic salt from filtrate.Arsenical material all is with solid-state and liquid appearance in whole technological process, and no gasiform produces.Make at the mixture of roasting high-arsenic material and salt of weak acid that maturing temperature is controlled at 600～900 ℃ in its reaction, high-arsenic material mixes with described salt of weak acid and to react, the consumption of salt of weak acid is 1.1～1.2 times of reacting weights, filtrate after the crystallization arsenic salt is used as the water cycle that joins the roasting discharging, avoid still containing the fluid removal of a small amount of arsenic, also improved the recovery of pair product arsenic salt.In order to reach better economic and technique effect, salt of weak acid adopts yellow soda ash to be advisable.
For further technical scheme of the present invention, exemplify several embodiment below.
Embodiment 1
Raw material adopts the high arsenic-and copper-bearing nickelalloy, and wherein copper content is 25.47%, and nickel content is 23.24%, arsenic content 28.94%.
At first press Na
2CO
3: the powder of the mixed fragmentation of raw material=0.65: 1, put into rotary kiln, mixture roasting when temperature is controlled at 600～800 ℃, the roasting reaction times is 3～4 hours, discharging heat is soluble in water, and the copper of generation and the oxide compound of nickel are insoluble and precipitate, and separates and takes out; The sodium arseniate that generates is then water-soluble, and filtering for crystallizing obtains the sodium salt (Na of arsenic
3AsO
412H
2O).Arsenic content is 0.5% in the filtrate filtered after measured, its retrieval system is used as the water cycle that joins discharging, and the arsenic-removing rate of high-arsenic material is 95% in this example, and the arsenic rate of recovery is 88%, no gasiform arsenic compound generates, and has created good condition for next step extracts copper nickel.
Embodiment 2
Raw material is the high arsenic-and copper-bearing nickelalloy, and wherein cupric 18.21%, and is nickeliferous 16.90%, and containing arsenic is 23.14%.
The ratio of compound is Na
2CO
3: raw material=0.72: 1, maturing temperature are controlled between 700～800 ℃, and all the other processing steps are with embodiment 1, and arsenic content is 0.3% in the crystallization arsenic salt rear filtrate after measured, and arsenic-removing rate reaches 97%, and the arsenic rate of recovery is greater than 90%.
Embodiment 3
Raw material is the high arsenic-and copper-bearing nickelalloy, and wherein cupric 17.41%, and is nickeliferous 15.11%, and containing arsenic is 19.78%.
The ratio of compound is Na
2CO
3: raw material=0.75: 1, maturing temperature are controlled between 850～900 ℃, and all the other processing steps are with embodiment 1, and arsenic content is 0.38% in the crystallization arsenic salt rear filtrate after measured, arsenic-removing rate 94%, and the arsenic rate of recovery is greater than 89%.
Technique scheme of the present invention can reach following effect:
1, do not have aborning the gas phase arsenic compound according to this law and generate, the filtrate cycle after the crystallization arsenic salt is used, and does not discharge, and has solved preferably the problem of environmental pollution;
2, because no gasiform violent in toxicity generates, therefore the requirement to equipment and operator can have reduction;
3, temperature of reaction is lower, but save energy, and the maturing temperature of former technology will reach more than 1000 ℃;
4, can increase economic efficiency, in dearsenification, can also obtain the arsenic product salt.
Claims (3)
1, a kind of technology of arsenic removal from high-arsenic material is characterized in that chippy high-arsenic material and the acid salt of weak acid that is weaker than arsenic acid are mixed, and carries out the roasting reaction, generate water miscible arsenic salt and other oxide compound, in discharging, add entry, isolate each composition, crystallization arsenic salt from filtrate.
2, by the described high-arsenic material arsenic removal of claim 1 technology, it is characterized in that the roasting temperature of reaction is 600～900 ℃, when high-arsenic material and described salt of weak acid mixed, the salt of weak acid consumption was 1.1～1.2 times of reacting weight, and the filtrate after the crystallization arsenic salt adds water cycle as discharging again and uses.
3, by the described high-arsenic material arsenic removal of claim 2 technology, it is characterized in that described salt of weak acid is with yellow soda ash (Na
2CO
3) or sodium hydroxide be advisable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101885A CN1093755A (en) | 1994-02-19 | 1994-02-19 | Safety dearsenicating technology for high-arsenic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101885A CN1093755A (en) | 1994-02-19 | 1994-02-19 | Safety dearsenicating technology for high-arsenic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1093755A true CN1093755A (en) | 1994-10-19 |
Family
ID=5030411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94101885A Pending CN1093755A (en) | 1994-02-19 | 1994-02-19 | Safety dearsenicating technology for high-arsenic material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093755A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048664A (en) * | 2017-12-21 | 2018-05-18 | 广东环境保护工程职业学院 | The method of dearsenification and application in a kind of mud from black copper |
| CN108048666A (en) * | 2017-12-21 | 2018-05-18 | 广东环境保护工程职业学院 | Method and the application of metal are recycled in a kind of electric precipitator dusts from copper metallurgy |
| CN108103320A (en) * | 2017-12-21 | 2018-06-01 | 广东环境保护工程职业学院 | Method and the application of metal are recycled in a kind of sack dust from reverberatory furnace |
| CN108138258A (en) * | 2015-09-02 | 2018-06-08 | 摩利博德诺斯伊金属股份公司 | The method of arsenic removal from arsenic material |
-
1994
- 1994-02-19 CN CN94101885A patent/CN1093755A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138258A (en) * | 2015-09-02 | 2018-06-08 | 摩利博德诺斯伊金属股份公司 | The method of arsenic removal from arsenic material |
| CN108138258B (en) * | 2015-09-02 | 2020-10-30 | 摩利博德诺斯伊金属股份公司 | Method for removing arsenic from arsenic-containing material |
| CN108048664A (en) * | 2017-12-21 | 2018-05-18 | 广东环境保护工程职业学院 | The method of dearsenification and application in a kind of mud from black copper |
| CN108048666A (en) * | 2017-12-21 | 2018-05-18 | 广东环境保护工程职业学院 | Method and the application of metal are recycled in a kind of electric precipitator dusts from copper metallurgy |
| CN108103320A (en) * | 2017-12-21 | 2018-06-01 | 广东环境保护工程职业学院 | Method and the application of metal are recycled in a kind of sack dust from reverberatory furnace |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |