CN101928843A - Method for distilling and reclaiming arsenic in direct-current ore heating furnace - Google Patents
Method for distilling and reclaiming arsenic in direct-current ore heating furnace Download PDFInfo
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- CN101928843A CN101928843A CN 201010268964 CN201010268964A CN101928843A CN 101928843 A CN101928843 A CN 101928843A CN 201010268964 CN201010268964 CN 201010268964 CN 201010268964 A CN201010268964 A CN 201010268964A CN 101928843 A CN101928843 A CN 101928843A
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Abstract
The invention discloses a method for distilling and reclaiming arsenic in a direct-current ore heating furnace, and relates to a treatment method for arsenic-containing smoke, in particular to a method for recycling distilled and reclaimed arsenic in arsenic-containing smoke. The high arsenic-containing smoke is proportioned and then conveyed into the direct-current ore heating furnace, and white arsenic and valuable metals are obtained after distillation, dust collection and reclamation. The method comprises the following steps of: a, feeding the arsenic-containing smoke into a feeding hopper, and conveying the arsenic-containing smoke into the direct-current ore heating furnace through a feeding spiral conveyer; b, controlling the furnace top temperature of the direct-current ore heating furnace to be between 450 and 500 DEG C, and heating the high arsenic-containing smoke to volatilize a large amount of arsenic trioxide in the smoke; c, collecting the arsenic trioxide distilled in the step b by using a cloth bag after settlement and condensation to obtain the white arsenic, quenching the slag left after distillation by using air, and volatilizing the arsenic trioxide again to obtain the white arsenic and the slag containing the valuable metals; and d, reclaiming the obtained white arsenic, and conveying the slag to a smelting plant for reclaiming the valuable metals. The method has the advantages of simple flow, high mechanization and automation degree, good working condition, safer and more reliable production and low energy consumption cost.
Description
Technical field
The present invention relates to a kind of treatment process of arsenic-containing smoke dust, the method for utilizing again after particularly the distillation of the arsenic in the arsenic-containing smoke dust being reclaimed.
Background technology
Along with expanding economy, administering the pollution protection environment has been the top priority of nonferrous smelting industry, and can handle high-arsenic dust well be the key of restriction nonferrous smelting industry development.Arsenic in the flue dust must be recycled, and must not allow its contaminate environment.Valuable metal in the flue dust also can be recycled.But high arsenic cigarette kitchen range adopts shaft furnace distillation method and electric heating rotary kiln distillation method to distill white arsenic for a long time always, and the shaft furnace distillation method is owing to exist the arsenic rate of recovery low, and white arsenic is of poor quality, the residue content height, and labor condition is poor, and the contaminate environment important disadvantages is stopped using.Though the electric heating rotary kiln distillation method has overcome the shortcoming of shaft furnace distillation method, also has the energy consumption height, dust treatment cost height, white arsenic evaporation rate is slow, and valuable metal needs shortcomings such as recovery separately in the slag.
Summary of the invention
Purpose of the present invention is intended to overcome the defective of prior art, provides a kind of white arsenic evaporation rate fast, the quality height, and rate of recovery height, energy consumption is low, and valuable metal obtains the method for the distilling and reclaiming arsenic in direct-current ore heating furnace that reclaims simultaneously in the slag.
The method of distilling and reclaiming arsenic in direct-current ore heating furnace of the present invention is will high-content arsenic flue dust to be transported in the DC-ore-heating furnace after the batching, obtains white arsenic and valuable metal through distillation, condensation, after gathering dust, reclaiming, and the steps include:
A. arsenic-containing smoke dust is sent in the loading hopper, be transported in the DC-ore-heating furnace by the blanking worm conveyor;
B. the throat temperature of controlling DC-ore-heating furnace is at the 450-500 degree, and heating high-content arsenic flue dust distills contained arsenic in the flue dust;
C. distillable distillation flue dust among the step b is used bag collection after by the sedimentation condensation, promptly get white arsenic, the remaining slag in distillation back is quenched through wind, and white arsenic volatilizees once more, white arsenic and contain the slag of valency metal;
D. the white arsenic of gained reclaims, and slag is sent into the smeltery and reclaimed valuable metal.
In the high-content arsenic flue dust of the present invention, the weight percent content of arsenic is 10-60%.Flue dust can be refining Sn, refining Pb, refining Cu, etc. the high-arsenic dust that produces.
The method of distilling and reclaiming arsenic in direct-current ore heating furnace of the present invention, adopt DC-ore-heating furnace in the fusing flue dust, also to heat the material on hot stove top, ore deposit, control suitable furnace temperature furnace pressure, make the abundant volatile matter distillation of arsenic in the material of top, promptly made full use of heat energy, reduced the arsenic content in the residue again, when white arsenic distillation finishes, white arsenic is accepted through bag collection after the sedimentation condensation again, the arsenic slag is quenched through wind and is volatilized once more, further reclaim white arsenic afterwards, slag is then directly sent into the smeltery and is extracted valuable metal.Method of the present invention is because the electric furnace good airproof performance adopts negative-pressure operation, and it is simple to have flow process, automatic and mechanical degree height, labor condition is good, the production safety and reliability, energy consumption cost reduces greatly, can the output weight percent be the white arsenic series product of 97.6%-99.5%.
Description of drawings
The device structure synoptic diagram that Fig. 1 uses for the method for the invention.
Fig. 2 is the schematic flow sheet of the method for the invention.
Among the figure, the integrated rectifier transformer of 1-, 2-DC-ore-heating furnace, 3-loading hopper, 4-worm conveyor, 5-blast inlet, 6-condensation settling pocket, 7-cloth bag chamber, 8-blower fan, 9-chimney.
Embodiment
The present invention is described further below in conjunction with embodiment, but be not limited to embodiment.
Embodiment 1
As depicted in figs. 1 and 2, the method of a kind of distilling and reclaiming arsenic in direct-current ore heating furnace of the present invention, be to be transported in the DC-ore-heating furnace after the high-content arsenic flue dust batching, to obtain white arsenic and valuable metal after distilling, gather dust, reclaiming, it is realized by following steps:
A. with the weight percent content of arsenic be 48% contain that arsenic tin flue dust is allocated 5/1000ths coke powders into and the 2%-3% silica is sent in the loading hopper 3, by quenching through wind, worm conveyor 4 is transported in the DC-ore-heating furnace 2, add thermal distillation in the mode that covers melting, DC-ore-heating furnace 2 is connected with integrated rectifier transformer 1;
B. the temperature of controlling DC-ore-heating furnace 2 is at 450-500 degree centigrade, and furnace pressure is controlled at 20Pa.Heating high-content arsenic flue dust, the white arsenic in the flue dust volatilizees in a large number;
C. the back sedimentation freezes distillable white arsenic flue gas among the step b in sedimentation condensing chamber 6, after finishing the sedimentation condensation, bag collection with cloth bag chamber 7, promptly get white arsenic, process wind was quenched and is reclaimed white arsenic once more when remaining slag was emitted after distilling, and got white arsenic and the slag that contains compositions such as tin, iron, magnesium oxide, calcium oxide, silicon oxide, aluminum oxide, plumbous oxide;
D. the white arsenic of gained reclaims, and slag is sent into the smeltery and reclaimed valuable metal.
As depicted in figs. 1 and 2, a kind of method of distilling and reclaiming arsenic in direct-current ore heating furnace is to be transported in the DC-ore-heating furnace after the high-content arsenic flue dust batching, to obtain white arsenic and valuable metal after distilling, gather dust, reclaiming, and it is realized by following steps:
A. with the weight percent content of arsenic be 10% contain that arsenic tin flue dust is allocated 5/1000ths coke powders into and the 2%-3% silica is sent in the loading hopper 3, by quenching through wind, worm conveyor 4 is transported in the DC-ore-heating furnace 2, add thermal distillation in the mode that covers melting, DC-ore-heating furnace 2 is connected with integrated rectifier transformer 1;
B. the temperature of controlling DC-ore-heating furnace 2 is at the 450-500 degree, and furnace pressure is controlled at-10Pa.Heating high-content arsenic flue dust, the white arsenic in the flue dust volatilizees in a large number;
C. with after distillable white arsenic flue gas is finished the sedimentation condensation among the step b in sedimentation condensing chamber 6, bag collection with cloth bag chamber 7, promptly get white arsenic, process wind was quenched and is reclaimed white arsenic once more when remaining slag was emitted after distilling, and got white arsenic and the slag that contains compositions such as tin, iron, magnesium oxide, calcium oxide, silicon oxide, aluminum oxide, plumbous oxide;
D. the white arsenic of gained reclaims, and slag is sent into the smeltery and reclaimed valuable metal.
The method of distilling and reclaiming arsenic in direct-current ore heating furnace of the present invention, realize by following steps:
A. be that 60% arsenic-containing smoke dust is allocated 5/1000ths coke powders into and the 2%-3% silica is sent in the loading hopper with the weight percent content of arsenic, be transported in the DC-ore-heating furnace, add thermal distillation in the mode that covers melting by the blanking worm conveyor;
B. the temperature of controlling DC-ore-heating furnace is at the 450-500 degree, and furnace pressure is controlled at-40Pa, heating high-content arsenic flue dust, contained arsenic in the distillation flue dust;
C. distillable distillation flue gas among the step b is used bag collection finish the sedimentation condensation in the sedimentation condensing chamber after, promptly get white arsenic, the remaining slag in sedimentation distillation back emit Shi Jingfeng quench reclaim white arsenic once more after, the slag of compositions such as white arsenic and stanniferous, iron, magnesium oxide, calcium oxide, silicon oxide, aluminum oxide, plumbous oxide;
D. the white arsenic of gained reclaims, and slag is sent into the smeltery and reclaimed valuable metal.
With the test of 1250KVA DC-ore-heating furnace, handle high arsenic tin flue dust, material composition which down:
As Sn Fe MgO CaO SiO
2 Al
2O
3 PbO
48.2％ 4.6％ 6.89％ 0.34％ 2.32％ 1.36％ 2.52％ 0.96％
In the present embodiment, too small because of the part of gathering dust, electric furnace has only been born about 1/2 load and has been got final product, and adds the silica of fume amount 2-3%, and control electric furnace throat temperature is at the 450-500 degree, and furnace pressure is controlled at-40Pa-20Pa, day handles 13 tons of flue dust, and white arsenic content is:
Sn As As
2O
3
Cloth is for chamber 1.37% 71.26% 90.26%
Sedimentation condensing chamber 1# 0.092% 74.7% 99.20%
After disposing, total power consumption only is 590 degree/ton materials, contains quitter and returns smeltery's extraction valuable metal.
Claims (8)
1. the method for a distilling and reclaiming arsenic in direct-current ore heating furnace is to be transported in the DC-ore-heating furnace after the high-content arsenic flue dust batching, to obtain white arsenic and valuable metal after distilling, gather dust, reclaiming, it is characterized in that, the steps include:
A. arsenic-containing smoke dust is sent in the loading hopper, be transported in the DC-ore-heating furnace by the blanking worm conveyor;
B. the throat temperature of controlling DC-ore-heating furnace heats high-content arsenic flue dust at the 450-500 degree, and white arsenic volatilizees in a large number in the flue dust;
C. distillable white arsenic flue gas among the step b is used bag collection after by the sedimentation condensation, promptly get white arsenic, the remaining slag in distillation back is quenched through wind, white arsenic volatilize once more white arsenic and contain the slag of valency metal;
D. the white arsenic of gained reclaims, and slag is sent into the smeltery and reclaimed valuable metal.
2. the method for distilling and reclaiming arsenic in direct-current ore heating furnace according to claim 1 is characterized in that, in the described arsenic-containing smoke dust, the weight percent content of arsenic is 10-60%.
3. the method for distilling and reclaiming arsenic in direct-current ore heating furnace according to claim 1 is characterized in that, step a is described to be sent into arsenic-containing smoke dust in the loading hopper, is to send in the loading hopper after adding 5/1000ths coke powders and 2%-3% silica in the arsenic-containing smoke dust again.
4. the method for distilling and reclaiming arsenic in direct-current ore heating furnace according to claim 1 is characterized in that, described sedimentation condensation is to finish in the sedimentation condensing chamber, again through bag collection.
5. the method for distilling and reclaiming arsenic in direct-current ore heating furnace according to claim 1 is characterized in that, the slag that the hot stove in ore deposit produces is quenched through wind and reclaimed arsenic once more.
6. the method for distilling and reclaiming arsenic in direct-current ore heating furnace according to claim 1 is characterized in that, distills in DC-ore-heating furnace in the mode that covers melting at arsenic-containing smoke dust.
7. the method for distilling and reclaiming arsenic in direct-current ore heating furnace according to claim 1 is characterized in that, furnace pressure is controlled at-40Pa-20Pa.
8. the method for distilling and reclaiming arsenic in direct-current ore heating furnace according to claim 1, it is characterized in that the described slag that contains the valency metal of step c is the slag that contains one or two or more kinds valuable metal in tin, iron, magnesium oxide, calcium oxide, silicon oxide, aluminum oxide, the plumbous oxide.
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| CN 201010268964 CN101928843A (en) | 2010-09-01 | 2010-09-01 | Method for distilling and reclaiming arsenic in direct-current ore heating furnace |
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| CN 201010268964 CN101928843A (en) | 2010-09-01 | 2010-09-01 | Method for distilling and reclaiming arsenic in direct-current ore heating furnace |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212706A (en) * | 2011-05-20 | 2011-10-12 | 云南锡业集团（控股）有限责任公司 | Method for extracting arsenic metal from arsenic trioxide material by two-stage carbon reduction |
| WO2013034049A1 (en) * | 2011-09-05 | 2013-03-14 | 耒阳市焱鑫有色金属有限公司 | Comprehensive recovery method for complex material containing arsenic and valuable metal slags |
| CN105506295A (en) * | 2015-12-31 | 2016-04-20 | 耒阳市焱鑫有色金属有限公司 | Combined As removing and purifying method |
| CN107779608A (en) * | 2017-11-21 | 2018-03-09 | 红河砷业有限责任公司 | A kind of equipment and production method that arsenic is directly produced using high-arsenic dust |
| CN107881346A (en) * | 2017-11-21 | 2018-04-06 | 红河砷业有限责任公司 | The selective separation method of arsenic in a kind of white cigarette dirt |
| WO2018120406A1 (en) * | 2016-12-30 | 2018-07-05 | 焱鑫环保科技有限公司 | Precisely controlled arsenic trioxide sublimating purification furnace using low-melting point alloy as floatation body |
| CN113106263A (en) * | 2021-03-30 | 2021-07-13 | 红河砷业有限责任公司 | Method for producing high-grade metal arsenic |
| CN113526548A (en) * | 2021-07-13 | 2021-10-22 | 广西凯玺有色金属有限公司 | Process method for clean disposal of high-arsenic hazardous waste |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107157A (en) * | 1985-09-18 | 1987-04-01 | 广西冶金研究所 | Wet method is extracted white arsenic from arsenic-containing smoke dust |
-
2010
- 2010-09-01 CN CN 201010268964 patent/CN101928843A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107157A (en) * | 1985-09-18 | 1987-04-01 | 广西冶金研究所 | Wet method is extracted white arsenic from arsenic-containing smoke dust |
Non-Patent Citations (1)
| Title |
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| 《砷的提取、环保和应用方向》 19921231 肖若珀 《电热回转窑蒸镏高砷锡尘制取白砷》 广西金属学会 124-125 1-8 , 第1版 1 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212706A (en) * | 2011-05-20 | 2011-10-12 | 云南锡业集团（控股）有限责任公司 | Method for extracting arsenic metal from arsenic trioxide material by two-stage carbon reduction |
| WO2013034049A1 (en) * | 2011-09-05 | 2013-03-14 | 耒阳市焱鑫有色金属有限公司 | Comprehensive recovery method for complex material containing arsenic and valuable metal slags |
| CN105506295A (en) * | 2015-12-31 | 2016-04-20 | 耒阳市焱鑫有色金属有限公司 | Combined As removing and purifying method |
| CN105506295B (en) * | 2015-12-31 | 2017-03-08 | 耒阳市焱鑫有色金属有限公司 | A kind of method that joint dearsenization purifies arsenic |
| WO2018120406A1 (en) * | 2016-12-30 | 2018-07-05 | 焱鑫环保科技有限公司 | Precisely controlled arsenic trioxide sublimating purification furnace using low-melting point alloy as floatation body |
| CN107779608A (en) * | 2017-11-21 | 2018-03-09 | 红河砷业有限责任公司 | A kind of equipment and production method that arsenic is directly produced using high-arsenic dust |
| CN107881346A (en) * | 2017-11-21 | 2018-04-06 | 红河砷业有限责任公司 | The selective separation method of arsenic in a kind of white cigarette dirt |
| CN113106263A (en) * | 2021-03-30 | 2021-07-13 | 红河砷业有限责任公司 | Method for producing high-grade metal arsenic |
| CN113106263B (en) * | 2021-03-30 | 2022-09-09 | 红河砷业有限责任公司 | Method for producing high-grade metal arsenic |
| CN113526548A (en) * | 2021-07-13 | 2021-10-22 | 广西凯玺有色金属有限公司 | Process method for clean disposal of high-arsenic hazardous waste |
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Application publication date: 20101229 |