CN103449517A - Method for preparing white arsenic from arsenic-containing dust in evaporation-free manner - Google Patents
Method for preparing white arsenic from arsenic-containing dust in evaporation-free manner Download PDFInfo
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- CN103449517A CN103449517A CN2013103776310A CN201310377631A CN103449517A CN 103449517 A CN103449517 A CN 103449517A CN 2013103776310 A CN2013103776310 A CN 2013103776310A CN 201310377631 A CN201310377631 A CN 201310377631A CN 103449517 A CN103449517 A CN 103449517A
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- arsenic
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- smoke dust
- containing smoke
- white
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- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 60
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 59
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000000428 dust Substances 0.000 title claims abstract description 30
- 229960002594 arsenic trioxide Drugs 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 26
- KTTMEOWBIWLMSE-UHFFFAOYSA-N diarsenic trioxide Chemical compound O1[As](O2)O[As]3O[As]1O[As]2O3 KTTMEOWBIWLMSE-UHFFFAOYSA-N 0.000 title claims 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- DJHGAFSJWGLOIV-UHFFFAOYSA-N Arsenic acid Chemical compound O[As](O)(O)=O DJHGAFSJWGLOIV-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229940000488 arsenic acid Drugs 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000012065 filter cake Substances 0.000 claims abstract description 20
- 239000000706 filtrate Substances 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000000779 smoke Substances 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 20
- 239000002253 acid Substances 0.000 claims description 18
- 238000001704 evaporation Methods 0.000 claims description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000003500 flue dust Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000006722 reduction reaction Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- IKWTVSLWAPBBKU-UHFFFAOYSA-N a1010_sial Chemical compound O=[As]O[As]=O IKWTVSLWAPBBKU-UHFFFAOYSA-N 0.000 abstract description 20
- 239000000047 product Substances 0.000 abstract description 11
- 238000002386 leaching Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 24
- 230000002829 reductive effect Effects 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000010310 metallurgical process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- -1 sanitas Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for preparing white arsenic from arsenic-containing dust in an evaporation-free manner, which belongs to the field of metallurgical engineering. The method comprises the following steps of: adding an oxidizing agent to oxidize trivalent arsenious acid into pentavalent arsenic acid during a process of leaching by water by virtue of the characteristics that arsenic acid is high in solubility in water and is low in solubility in water; purifying and removing impurities, then charging a reducing agent to reduce the pentavalent arsenic acid into the trivalent arsenious acid, cooling, and then crystallizing the arsenious acid into arsenic trioxide; and returning the filtrate obtained by filtering the cooled and crystallized product, leaching, drying the filter cake, thus obtaining the white arsenic product. According to the method, the characteristic of high solubility of pentavalent arsenic can be adequately utilized, and the high leaching rate of arsenic is realized with low water consumption and at a low reaction temperature, thus reducing water consumption and energy consumption.
Description
Technical field
The present invention relates to a kind of method of non-evaporating the white arsenic of preparation of arsenic-containing smoke dust, belong to the metallurgical engineering field.
Background technology
Arsenic and compound thereof are generally all toxic, and its toxicity is notorious, almost widely known.But arsenic and compound thereof are in industrial field and the superior use function of but having a wide range of applications.Be used as alloy addition and produce plumbous bullet processed, type metal, brass (condenser), accumulator grid, wear resistant alloy, High Strength Construction Steel and corrosion-resisting steel etc.Contain a certain amount of arsenic in brass and can prevent dezincify.High purity arsenic is the raw material of producing gaas compound semiconductor, indium arsenide etc., is also the doped element of semiconductor material germanium and silicon.The compound of arsenic is also for the manufacture of agricultural chemicals, sanitas, dyestuff and pharmaceutical preparation etc.
Arsenic is content little in the earth's crust, but it grows on trees at occurring in nature, is mainly that the form with sulfide mineral exists.All contain the sulfide of a certain amount of arsenic in which kind of metallic sulfide ores, heavy metal and the association of gold and silver precious metal ore or the symbiosis such as general and copper, lead, zinc, tin, tungsten, molybdenum, mercury, enter smeltery and chemical plant with the concentrate of metal.Arsenic pollutes mining, the mineral ore dressing processing that is present in nonferrous metallurgy and chemical industry and separates, smelts in the processes such as purification and chemical industry deep processing, and in recent years, environmental pollution becomes the focus of social concerns, and particularly heavy metal and arsenic pollute.The improvement of arsenic has become the bottleneck of restriction metallurgical industry development.
Arsenic-containing smoke dust in metallurgy or chemical industry contains other valuable metals toward contact, after generally taking to extract arsenic wherein, valuable constituent is returned to technical process.The extraction process of arsenic in flue dust, generally have following several method.With acid or water, at the temperature that approaches boiling, leach, after purifying evaporation concentration prepare white arsenic product (Huang Gansheng, Quan Changrong. the wet-extraction for arsenic novel process is explored [J]. non-ferrous metal (Smelting Part), 1994 (3): 3～4).Due to As
2o
3in water, solubleness is little, prepares white arsenic with the method for evaporation concentration and need further to solve the problem that energy consumption is large, cost is high.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of method of non-evaporating the white arsenic of preparation of arsenic-containing smoke dust, can take full advantage of the characteristic that pentavalent arsenic solubleness is high, under low water consumption and low reaction temperatures, realize the high leaching yield of arsenic, reduced water consumption and energy consumption.
Technical scheme of the present invention is: utilize that the solubleness of arsenic acid in water is large, arsenus acid dissolves lowly, in the process leached at water, adds oxygenant the arsenus acid of trivalent to be oxidized to the arsenic acid of pentavalent.Pass into reductive agent after purification and impurity removal and the arsenic acid of pentavalent is reduced to the arsenus acid of trivalent, cooling rear arsenus acid crystallization is white arsenic.Concrete steps comprise as follows:
(1) heat water to 60～90 ℃, under the state stirred, add arsenic-containing smoke dust, hydrogen peroxide and diluted acid successively in water, the pH value that diluted acid is controlled mixing solutions is 1～3, filters after reacting 0.5～3h, obtains the filter cake that contains the valency metal and the solution that contains arsenic acid;
(2) to being 4～7 containing adding the pH value of ammoniacal liquor regulator solution in the solution of arsenic acid, stirring reaction 0.5～2h under the condition that is 40～70 ℃ at solution temperature, after finishing, reaction filters, the filtrate obtained and filter cake, and filter cake is the material (recoverable) that contains the valuable metal such as copper;
(3) in the filtrate prepared to step (2), pass into containing SO
2---gas carry out reduction reaction, filter after being cooled to after completion of the reaction 20～25 ℃, filter cake obtains white arsenic product after 60～80 ℃ of drying 8～24h.
Described arsenic-containing smoke dust is As
2o
3the flue dust of 30 wt%.
In described step (1), the solid-to-liquid ratio of arsenic-containing smoke dust and water is 1:2～8g/ml.
A kind of in the sulfuric acid that described diluted acid is concentration 10～20wt%, hydrochloric acid or nitric acid.
The concentration of described hydrogen peroxide is 25～30wt%, and add-on is 1.8～3.0 times of arsenic weight in arsenic-containing smoke dust.
Described ammoniacal liquor is industrial ammonia, and industrial ammonia is the aqueous solution containing ammonia 25%～28%.
Described containing SO
2---gas in SO
2---volume be greater than 5%, SO in the gas passed into
2weight be arsenic in solution
0.8～1.5 times of weight.
Described passing into containing SO
2---the speed of gas be 150～170L/h.
Principle of the present invention is: utilize that the solubleness of arsenic acid in water is large, arsenus acid dissolves lowly, in the process leached at water, adds oxygenant the arsenus acid of trivalent to be oxidized to the arsenic acid of pentavalent.Pass into reductive agent after purification and impurity removal and the arsenic acid of pentavalent is reduced to the arsenus acid of three, cooling rear arsenus acid crystallization is white arsenic.The filtrate that the product of crystallisation by cooling filters is returned to leaching, obtains white arsenic product after filtration cakes torrefaction.
The advantage that the present invention possesses and effect:
(1) can take full advantage of the characteristic that pentavalent arsenic solubleness is high, under low water consumption and low reaction temperatures, realize arsenic
High leaching yield, reduced water consumption and energy consumption;
(2) filtrate after the purification of leaching liquor removal of impurities adds smeltery's relieving haperacidity flue gas that the pentavalent arsenic acid is reduced to the trivalent arsenic acid,
Crystallisation by cooling, crystallized product filters, the white arsenic of dry rear preparation.Process, without carrying out the evaporation concentration operation, is saved a large amount of energy consumptions.
(3) harmful material of arsenic-containing smoke dust metallurgical process produced is converted into white arsenic product and has reclaimed having in the flue dust
The valency metal, realize the resource comprehensive recycle, reduced the amount that is discharged into arsenic in environment in the commercial run, is conducive to environment protection.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment one: the method for non-evaporating the white arsenic of preparation of the arsenic-containing smoke dust of present embodiment is:
(1) heat water to 85 ℃, add containing As in water successively under the state stirred
2o
339.6wt%, Pb18.6wt%, H
2flue dust, the concentration that the plumbous metallurgical process of O 8wt% produces is 30wt% hydrogen peroxide (add-on is 2.3 times of arsenic weight in arsenic-containing smoke dust) and diluted acid (sulfuric acid of concentration 10wt%), the pH value of controlling mixing solutions is 1.5 reaction 3h, then filter the solution that obtains mainly containing the filter cake of valency metal and contain arsenic acid;
(2) to being 5 containing adding the pH value of ammoniacal liquor regulator solution in the solution of arsenic acid, stirring reaction 2h under the condition that is 70 ℃ at solution temperature, filtration after reaction finishes, the filtrate obtained and filter cake, filter cake is the material (recoverable) that contains the valuable metal such as copper;
(3) in the filtrate prepared to step (2), pass into containing SO
2---gas (SO in gas
2---volume 8%, SO in the gas passed into
21.5 times of the weight weight that is arsenic in solution, pass into containing SO
2---the speed of gas be 160L/h) carry out reduction reaction, filter after being cooled to after completion of the reaction 24 ℃, filter cake obtains white arsenic product, As after 80 ℃ of dry 20h
2o
3content is 99.2%.
Embodiment two: the method for non-evaporating the white arsenic of preparation of the arsenic-containing smoke dust of present embodiment is:
(1) heat water to 90 ℃, under the state stirred, add As successively in water
2o
3the arsenic-containing smoke dust of 38 wt%, concentration are 28wt% hydrogen peroxide (add-on is 1.8 times of arsenic weight in arsenic-containing smoke dust) and diluted acid (concentration 15wt% hydrochloric acid), the pH value of controlling mixing solutions is 1 reaction 2h, then filter the solution that obtains mainly containing the filter cake of valency metal and contain arsenic acid;
(2) to being 4 containing adding the pH value of ammoniacal liquor regulator solution in the solution of arsenic acid, stirring reaction 1h under the condition that is 40 ℃ at solution temperature, filtration after reaction finishes, the filtrate obtained and filter cake, filter cake is the material (recoverable) that contains the valuable metal such as copper;
(3) in the filtrate prepared to step (2), pass into containing SO
2---gas (SO in gas
2---volume 7%, SO in the gas passed into
21 times of the weight weight that is arsenic in solution, pass into containing SO
2---the speed of gas be 150L/h) carry out reduction reaction, filter after being cooled to after completion of the reaction 25 ℃, filter cake obtains white arsenic product, As after 60 ℃ of dry 24h
2o
3content is 99.5%.
Embodiment three: the method for non-evaporating the white arsenic of preparation of the arsenic-containing smoke dust of present embodiment is:
(1) heat water to 60 ℃, under the state stirred, add As successively in water
2o
3the arsenic-containing smoke dust of 41 wt%, concentration are 25wt% hydrogen peroxide (add-on is 3.0 times of arsenic weight in arsenic-containing smoke dust) and diluted acid (nitric acid of concentration 20wt%), the pH value of controlling mixing solutions is 3 reaction 0.5h, then filter the solution that obtains mainly containing the filter cake of valency metal and contain arsenic acid;
(2) to being 7 containing adding the pH value of ammoniacal liquor regulator solution in the solution of arsenic acid, stirring reaction 0.5h under the condition that is 60 ℃ at solution temperature, after finishing, reaction filters, the filtrate obtained and filter cake, and filter cake is the material (recoverable) that contains the valuable metal such as copper;
(3) in the filtrate prepared to step (2), pass into containing SO
2---gas (SO in gas
2---volume 6%, SO in the gas passed into
20.8 times of the weight weight that is arsenic in solution, pass into containing SO
2---the speed of gas be 170L/h) carry out reduction reaction, filter after being cooled to after completion of the reaction 20 ℃, filter cake obtains white arsenic product, As after 70 ℃ of dry 8h
2o
3content is 99.4%.
Above the specific embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken possessed those of ordinary skills, can also under the prerequisite that does not break away from aim of the present invention, make various variations.
Claims (7)
- Non-evaporating of an arsenic-containing smoke dust preparation white arsenic method, it is characterized in that comprising the following steps:(1) heat water to 60～90 ℃, under the state stirred, add arsenic-containing smoke dust, hydrogen peroxide and diluted acid successively in water, the pH value that diluted acid is controlled mixing solutions is 1～3, filters after reacting 0.5～3h, obtains the filter cake that contains the valency metal and the solution that contains arsenic acid;(2) to being 4～7 containing in the solution of arsenic acid, adding the pH value of ammoniacal liquor regulator solution, stirring reaction 0.5～2h under the condition that is 40～70 ℃ at solution temperature, filter the filtrate obtained and the filter cake that contains copper after reaction finishes;(3) in the filtrate prepared to step (2), pass into containing SO 2---gas carry out reduction reaction, filter after being cooled to after completion of the reaction 20～25 ℃, filter cake obtains white arsenic after 60～80 ℃ of drying 8～24h.
- Non-evaporating of arsenic-containing smoke dust according to claim 1 the preparation white arsenic method, it is characterized in that: described arsenic-containing smoke dust is As 2o 3the flue dust of 30 wt%.
- 3. the method for non-evaporating of the arsenic-containing smoke dust according to claim 1 white arsenic of preparation, it is characterized in that: the solid-to-liquid ratio of arsenic-containing smoke dust and water is 1:2～8g/ml in described step (1).
- 4. the method for non-evaporating of the arsenic-containing smoke dust according to claim 1 white arsenic of preparation, is characterized in that: the sulfuric acid that described diluted acid is concentration 10～20wt%, hydrochloric acid or nitric acid.
- 5. the method for non-evaporating of the arsenic-containing smoke dust according to claim 1 white arsenic of preparation, it is characterized in that: the concentration of described hydrogen peroxide is 25～30wt%, add-on is 1.8～3.0 times of arsenic weight in arsenic-containing smoke dust.
- 6. the method for non-evaporating of the arsenic-containing smoke dust according to claim 1 white arsenic of preparation, is characterized in that: described containing SO 2---gas in SO 2---volume be greater than 5%, SO in the gas passed into 20.8～1.5 times of the weight weight that is arsenic in solution.
- 7. the method for non-evaporating of the arsenic-containing smoke dust according to claim 6 white arsenic of preparation, is characterized in that: described passing into containing SO 2---the speed of gas be 150～170L/h.
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|---|---|---|---|
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|---|---|---|---|
| CN201310377631.0A CN103449517B (en) | 2013-08-27 | 2013-08-27 | Method for preparing white arsenic from arsenic-containing dust in evaporation-free manner |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268179A (en) * | 2016-08-25 | 2017-01-04 | 长沙有色冶金设计研究院有限公司 | The energy saving technique of a kind of synthetical recovery sulfuric acid purification spent acid and system |
| CN106801151A (en) * | 2017-01-22 | 2017-06-06 | 中国恩菲工程技术有限公司 | The method of flyash reduction melting enriched germanium |
| CN106834718A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of arsenic-containing smoke dust comprehensive utilization and the method for arsenic harmlessness disposing |
| CN106834707A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of method of arsenic-containing material synthetical recovery and arsenic recycling |
| CN106834676A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of method that valuable metal and arsenic resource harmlessness disposing are reclaimed from arsenic-containing smoke dust |
| CN106834711A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of method for reclaiming and preparing high purity tellurium in the flue dust from tellurium containing arsenic |
| CN107523702A (en) * | 2017-08-23 | 2017-12-29 | 中南大学 | A kind of method that sodium salt system pressure oxidation prepares sodium pyroantimonate |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106268179A (en) * | 2016-08-25 | 2017-01-04 | 长沙有色冶金设计研究院有限公司 | The energy saving technique of a kind of synthetical recovery sulfuric acid purification spent acid and system |
| CN106268179B (en) * | 2016-08-25 | 2018-09-07 | 长沙有色冶金设计研究院有限公司 | A kind of energy saving technique and system of synthetical recovery sulfuric acid purification spent acid |
| CN106834718A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of arsenic-containing smoke dust comprehensive utilization and the method for arsenic harmlessness disposing |
| CN106834707A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of method of arsenic-containing material synthetical recovery and arsenic recycling |
| CN106834676A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of method that valuable metal and arsenic resource harmlessness disposing are reclaimed from arsenic-containing smoke dust |
| CN106834711A (en) * | 2016-12-21 | 2017-06-13 | 中南大学 | A kind of method for reclaiming and preparing high purity tellurium in the flue dust from tellurium containing arsenic |
| CN106834707B (en) * | 2016-12-21 | 2019-03-26 | 中南大学 | A kind of method that arsenic-containing material synthetical recovery and arsenic resource utilize |
| CN106801151A (en) * | 2017-01-22 | 2017-06-06 | 中国恩菲工程技术有限公司 | The method of flyash reduction melting enriched germanium |
| CN106801151B (en) * | 2017-01-22 | 2019-05-07 | 中国恩菲工程技术有限公司 | The method of flyash reduction melting enriched germanium |
| CN107523702A (en) * | 2017-08-23 | 2017-12-29 | 中南大学 | A kind of method that sodium salt system pressure oxidation prepares sodium pyroantimonate |
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