CN102627262A - Method for extracting high purity selenium from by-product of high temperature scarlet production - Google Patents
Method for extracting high purity selenium from by-product of high temperature scarlet production Download PDFInfo
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- CN102627262A CN102627262A CN2012101291397A CN201210129139A CN102627262A CN 102627262 A CN102627262 A CN 102627262A CN 2012101291397 A CN2012101291397 A CN 2012101291397A CN 201210129139 A CN201210129139 A CN 201210129139A CN 102627262 A CN102627262 A CN 102627262A
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- 239000011669 selenium Substances 0.000 title claims abstract description 97
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 239000006227 byproduct Substances 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 44
- 239000002253 acid Substances 0.000 claims abstract description 39
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 26
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 26
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 239000000047 product Substances 0.000 claims abstract description 19
- 239000008399 tap water Substances 0.000 claims abstract description 18
- 235000020679 tap water Nutrition 0.000 claims abstract description 18
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 13
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 6
- HXJIYMKUTJCNFT-UHFFFAOYSA-N cadmium;selenous acid Chemical compound [Cd].O[Se](O)=O HXJIYMKUTJCNFT-UHFFFAOYSA-N 0.000 claims description 19
- 238000005516 engineering process Methods 0.000 claims description 15
- 238000005352 clarification Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000006386 neutralization reaction Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 239000012467 final product Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052793 cadmium Inorganic materials 0.000 abstract description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 229910052726 zirconium Inorganic materials 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 4
- 239000008237 rinsing water Substances 0.000 abstract 2
- KBJQPSPKRGXBTH-UHFFFAOYSA-L cadmium(2+);selenite Chemical compound [Cd+2].[O-][Se]([O-])=O KBJQPSPKRGXBTH-UHFFFAOYSA-L 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 230000020477 pH reduction Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 229910052717 sulfur Inorganic materials 0.000 abstract 1
- 239000011593 sulfur Substances 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 7
- 239000000049 pigment Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RFAFBXGYHBOUMV-UHFFFAOYSA-N calcium chromate Chemical compound [Ca+2].[O-][Cr]([O-])(=O)=O RFAFBXGYHBOUMV-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- PGWFQHBXMJMAPN-UHFFFAOYSA-N ctk4b5078 Chemical compound [Cd].OS(=O)(=O)[Se]S(O)(=O)=O PGWFQHBXMJMAPN-UHFFFAOYSA-N 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000001062 red colorant Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000012976 tarts Nutrition 0.000 description 1
Images
Abstract
The invention discloses a method for extracting high purity selenium from a by-product of high temperature scarlet production, comprising steps that: waste acid of an acidification procedure in a coating process is clarified; the waste acid is stirred, a sodium carbonate solution is uniformly added according to the concentration of the waste acid and then a sodium hydroxide solution is used for neutralizing the waste acid; thiourea is used for detecting selenium content in the neutralized liquid, and a residue of cadmium selenite is obtained after filter pressing; sulfuric acid is added in a selenium-settling bucket, the residue is slowly added, a sodium sulfite solution is added after thoroughly stirring, and stirring is performed again; and steam is introduced to heat the solution, filtering is carried out after standing the solution, a residue settles naturally, then tap water is used for heating and rinsing the residue, sulfate ions are detected in the rinsing water, and when the content of the sulfate ions in the rinsing water is close to that in the tap water, a product is obtained after drying the residue. According to the invention, interference of different forms of impurities such as silicon, zirconium, cadmium, sulfur and the like is excluded, selenium recovery rate is high, purity is high and the recovered selenium with high purity can be directly reused in production and application.
Description
Technical field
The present invention relates to a kind of method of from the sub product that the high temperature scarlet look is produced, extracting high purity selenium.
Background technology
Beramic color particularly red pigment is pottery and the painted requisite a kind of material of glaze; Usually adopt complicated technology to produce; Along with the live continuous lifting of grade of modern, the increasing demand of high-quality pottery house ornamentation article, ceramic daily necessities, ceramics is shown especially out.The beramic color product that traditional technology is produced can not resolved the stable contradiction of bright-colored, saturated and color behind the ceramic coloring all the time, and the two can not be taken into account often.Improving constantly and the continuous reinforcement of environmental consciousness of Along with people's living standard, a kind of pigment that can give bright-coloured color of ceramic product and stable performance, urgent pendulum is in face of the people.Proposition that inclusion pigment is theoretical and successful suitability for industrialized production have remedied this vacancy.Inclusion pigment is the heavy metal compound that utilizes the fabulous zirconium silicate parcel poor stability of high-temperature stability, and low temperature is red, bright-coloured, the saturated hue of yellow ultramarine thereby realized both having kept, and has solved poor high temperature stability and environmental issue again.Inclusion pigment is widely used in domestic and international ceramic industry, like architectural pottery, domestic ceramics, industrial ceramics, artistic pottery and porcelain etc.
The bright red colorant of traditional parcel mainly is a zirconium silicate parcel cadmium sulfoselenide pigment, and the technology of its production is comparatively long, and because of its singularity, encapsulation ratio is all theoretical low, generally at 7-9%.Most of resources are wasted more during the course, selenium resource particularly, and utilization ratio only has an appointment 50%.And the selenium resource is a kind of scarce resource on market, is worth very highly, to a great extent, affects the production cost of enterprise, thereby to seek a kind of Technology that reclaims the selenium resource be necessary, and particularly the selenium at acidizing process reclaims particularly evident.Generally extract the selenium resource at home; Be in the selenium ore deposit; And the present invention relates to other relevant obscurants that packing technology brings; There is obscurant in not same sex form like silicon, zirconium, cadmium, sulphur etc., thus with general extraction selenium Technology be diverse, getting rid of obscurant, extracting high-purity selenium is key point of the present invention.
Summary of the invention
For solving the problems of the technologies described above, the present invention provides a kind of method of from the sub product that the high temperature scarlet look is produced, extracting high purity selenium.It is the selenous acid cadmium that the present invention adopts first conversion selenium, reduce the process method of selenium with the sulfurous ion again can get rid of the influence of other relevant interference things, extracts highly purified selenium simple substance.
The technical scheme that technical solution problem of the present invention is adopted:
A kind of method of from the sub product that the high temperature scarlet look is produced, extracting high purity selenium, its step do,
1), the spent acid of clarification packing technology acidizing process, the spent acid after the clarification is put into neutralization bucket;
2), stir spent acid and at the uniform velocity add sodium carbonate solution according to the concentration of spent acid, when pH value to 1～2, in continuing with sodium hydroxide solution and spent acid, the stabilizing solution pH value is between 3.5 ~ 4.5;
3), measure the content of selenium in the neutralizer with thiocarbamide, selenium content gets final product press filtration the neutralizer quality below 0.5%, obtain filter residue selenous acid cadmium;
4), in heavy selenium bucket, to add the quality percentage composition be the sulfuric acid of 30%-40%, slowly adds filter residue again, fully stirs, and adds sodium sulfite solution, the mass ratio of selenium material is 3:2 ~ 2:1 in S-WAT and the selenous acid cadmium; Stirred afterwards 1 hour, sampling detects selenium content in the solution: as Se≤0.2g/L, reduction selenium is accomplished;
5), feed steam in the heavy selenium bucket solution temperature is added to 60 ℃-75 ℃; Leave standstill 8-12 hour after-filtration, change filter residue in rinsing tub natural subsidence, be heated to 50 ℃ of-60 ℃ of rinsings with tap water then; Detect sulfate ion in the rinse water; When in sulfate ion in the rinse water and the tap water near the time, with filter residue oven dry, be finished product.
Further, the mass ratio of selenium material is 2:1 in adding S-WAT described in the step 4) and the selenous acid cadmium.
Further, steam adds to 75 ℃ with solution temperature in the step 5), and the tap water temperature that is used for rinsing afterwards is heated to 60 ℃.
The method that detects selenium content in the solution in the said step 4) is: get the filtered liq behind the heavy selenium of 2ml, 10% thiourea solution that splashes into 0.06ml does not show red, and the selenium that promptly reduces is accomplished.
Beneficial effect of the present invention is: this technological process when selenous acid cadmium conversion selenium simple substance; Can get rid of the not interference of same sex form of impurity such as silicon, zirconium, cadmium, sulphur; And selenium recovery is big, and purity is high, and high purity reclaims the quality of selenium can directly return production application.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, technical process of the present invention is:
1), earlier with the spent acid clarification of packing technology acidizing process, the spent acid after the clarification is put into neutralization bucket, stir and at the uniform velocity add sodium carbonate solution.
2), stir spent acid and at the uniform velocity add sodium carbonate solution according to the concentration of spent acid, and then in continuing with sodium hydroxide solution and spent acid, when pH value to 1 the time, continuing to add sodium hydroxide solution, to make the solution pH value be 3.5; This process ionic reaction formula is following, the first step: 2H
++ CO
3 2-=H
2O+CO
2Second step: the H
++ OH
-=H
2O.
3), measure the content of selenium in the neutralizer with thiocarbamide, selenium content is press filtration in 0.5% of neutralizer quality, obtains filter residue selenous acid cadmium;
4), in heavy selenium bucket, to add the quality percentage composition be 30% sulfuric acid, slowly adds filter residue again, fully stirs, and adds sodium sulfite solution, the mass ratio of selenium material is 3:2 in S-WAT and the selenous acid cadmium, and is main here with reference to ionic reaction formula: 2SO as follows
3 2-+ SeO
3 2-=2SO
4 2-+ Se; Stirred afterwards 1 hour, sampling detects selenium content in the solution: as Se≤0.2g/L, reduction selenium is accomplished;
5), feed steam in the heavy selenium bucket solution temperature is added to 60 ℃; Leave standstill 8 hours after-filtration, change filter residue in rinsing tub natural subsidence, be heated to 50 ℃ of rinsings with tap water then; Detect sulfate ion in the rinse water; When in sulfate ion in the rinse water and the tap water near the time, with filter residue oven dry, be finished product.
Embodiment 2
1), earlier with the spent acid clarification of packing technology acidizing process, the spent acid after the clarification is put into neutralization bucket, stir and at the uniform velocity add sodium carbonate solution.
2), stir spent acid and at the uniform velocity add sodium carbonate solution according to the concentration of spent acid, and then in continuing with sodium hydroxide solution and spent acid, when pH value to 2 the time, continuing to add sodium hydroxide solution, to make the solution pH value be 3.8;
3), measure the content of selenium in the neutralizer with thiocarbamide, selenium content is press filtration in 0.5% of neutralizer quality, obtains filter residue selenous acid cadmium;
4), in heavy selenium bucket, to add the quality percentage composition be 40% sulfuric acid, slowly adds filter residue again, fully stirs, and adds sodium sulfite solution, the mass ratio of selenium material is 2:1 in S-WAT and the selenous acid cadmium; Stirred afterwards 1 hour, sampling detects selenium content in the solution: get the filtered liq behind the heavy selenium of 2ml, 10% thiourea solution that splashes into 0.06ml does not show red, and the selenium that promptly reduces is accomplished.
5), feed steam in the heavy selenium bucket solution temperature is added to 75 ℃; Leave standstill 12 hours after-filtration, change filter residue in rinsing tub natural subsidence, be heated to 60 ℃ of rinsings with tap water then; Detect sulfate ion in the rinse water; When in sulfate ion in the rinse water and the tap water near the time, with filter residue oven dry, be finished product.
Embodiment 3
1), earlier with the spent acid clarification of packing technology acidizing process, the spent acid after the clarification is put into neutralization bucket, stir and at the uniform velocity add sodium carbonate solution.
2), stir spent acid and at the uniform velocity add sodium carbonate solution according to the concentration of spent acid, and then in continuing with sodium hydroxide solution and spent acid, when pH value to 3 the time, continuing to add sodium hydroxide solution, to make the solution pH value be 4.0;
3), measure the content of selenium in the neutralizer with thiocarbamide, selenium content is press filtration in 0.4% of neutralizer quality, obtains filter residue selenous acid cadmium;
4), in heavy selenium bucket, to add the quality percentage composition be 35% sulfuric acid, slowly adds filter residue again, fully stirs, and adds sodium sulfite solution, the mass ratio of selenium material is 2:1 in S-WAT and the selenous acid cadmium; Stirred afterwards 1 hour, sampling detects selenium content in the solution: as Se≤0.2g/L, reduction selenium is accomplished;
5), feed steam in the heavy selenium bucket solution temperature is added to 70 ℃; Leave standstill 10 hours after-filtration, change filter residue in rinsing tub natural subsidence, be heated to 55 ℃ of rinsings with tap water then; Detect sulfate ion in the rinse water; When in sulfate ion in the rinse water and the tap water near the time, with filter residue oven dry, be finished product.
Embodiment 4
1), earlier with the spent acid clarification of packing technology acidizing process, the spent acid after the clarification is put into neutralization bucket, stir and at the uniform velocity add sodium carbonate solution.
2), stir spent acid and at the uniform velocity add sodium carbonate solution according to the concentration of spent acid, and then in continuing with sodium hydroxide solution and spent acid, when pH value to 4 the time, continuing to add sodium hydroxide solution, to make the solution pH value be 4.5;
3), measure the content of selenium in the neutralizer with thiocarbamide, selenium content is press filtration in 0.5% of neutralizer quality, obtains filter residue selenous acid cadmium;
4), in heavy selenium bucket, to add the quality percentage composition be 38% sulfuric acid, slowly adds filter residue again, fully stirs, and adds sodium sulfite solution, the mass ratio of selenium material is 7:4 in S-WAT and the selenous acid cadmium; Stirred afterwards 1 hour, sampling detects selenium content in the solution: get the filtered liq behind the heavy selenium of 2ml, 10% thiourea solution that splashes into 0.06ml does not show red, and the selenium that promptly reduces is accomplished;
5), feed steam in the heavy selenium bucket solution temperature is added to 65 ℃; Leave standstill 9 hours after-filtration, change filter residue in rinsing tub natural subsidence, be heated to 58 ℃ of rinsings with tap water then; Detect sulfate ion in the rinse water; When in sulfate ion in the rinse water and the tap water near the time, with filter residue oven dry, be finished product.
Embodiment 5
1), earlier with the spent acid clarification of packing technology acidizing process, the spent acid after the clarification is put into neutralization bucket, stir and at the uniform velocity add sodium carbonate solution.
2), stir spent acid and at the uniform velocity add sodium carbonate solution according to the concentration of spent acid, and then in continuing with sodium hydroxide solution and spent acid, when pH value to 3 the time, continuing to add sodium hydroxide solution, to make the solution pH value be 4.2;
3), measure the content of selenium in the neutralizer with thiocarbamide, selenium content is press filtration in 0.5% of neutralizer quality, obtains filter residue selenous acid cadmium;
4), in heavy selenium bucket, to add the quality percentage composition be 40% sulfuric acid, slowly adds filter residue again, fully stirs, and adds sodium sulfite solution, the mass ratio of selenium material is 2:1 in S-WAT and the selenous acid cadmium; Stirred afterwards 1 hour, sampling detects selenium content in the solution: get the filtered liq behind the heavy selenium of 2ml, 10% thiourea solution that splashes into 0.06ml does not show red, and the selenium that promptly reduces is accomplished;
5), feed steam in the heavy selenium bucket solution temperature is added to 75 ℃; Leave standstill 10 hours after-filtration, change filter residue in rinsing tub natural subsidence, be heated to 60 ℃ of rinsings with tap water then; Detect sulfate ion in the rinse water; When in sulfate ion in the rinse water and the tap water near the time, with filter residue oven dry, be finished product.
Secondly, different parameter to the yield of last selenium and quality influence shown in table one:
Table one
This condition experiment result is excellent with No. 5; The mass ratio of selenium material is 2:1 in its S-WAT and the selenous acid cadmium; When pH value to 4 the time, add the solution-stabilized solution pH value of excessive sodium hydrate, the rinsing temperature is 60 ℃; Change the selenium purity of controlling under the processing condition and can reach 98%, the selenium of extract can reclaim greater than 95%.Other band tart filtratings are neutralized to more than the PH=8 through alkali, get into environment-friendly treating process.
Claims (5)
1. method of from the sub product that the high temperature scarlet look is produced, extracting high purity selenium, its step do,
1), the spent acid of clarification packing technology acidizing process, the spent acid after the clarification is put into neutralization bucket;
2), stir spent acid and at the uniform velocity add sodium carbonate solution according to the concentration of spent acid, when pH value to 1～2, in continuing with sodium hydroxide solution and spent acid, the stabilizing solution pH value is between 3.5 ~ 4.5;
3), measure the content of selenium in the neutralizer with thiocarbamide, selenium content gets final product press filtration the neutralizer quality below 0.5%, obtain filter residue selenous acid cadmium;
4), in heavy selenium bucket, to add the quality percentage composition be the sulfuric acid of 30%-40%, slowly adds filter residue again, fully stirs, and adds sodium sulfite solution, the mass ratio of selenium material is 3:2 ~ 2:1 in S-WAT and the selenous acid cadmium; Stirred afterwards 1 hour, sampling detects selenium content in the solution: as Se≤0.2g/L, reduction selenium is accomplished;
5), feed steam in the heavy selenium bucket solution temperature is added to 60 ℃-75 ℃; Leave standstill 8-12 hour after-filtration, change filter residue in rinsing tub natural subsidence, be heated to 50 ℃ of-60 ℃ of rinsings with tap water then; Detect sulfate ion in the rinse water; When in sulfate ion in the rinse water and the tap water near the time, with filter residue oven dry, be finished product.
2. the method for from the sub product that the high temperature scarlet look is produced, extracting high purity selenium according to claim 1 is characterized in that the mass ratio of selenium material is 2:1 in adding S-WAT described in the step 4) and the selenous acid cadmium.
3. the method for from the sub product that the high temperature scarlet look is produced, extracting high purity selenium according to claim 2 is characterized in that steam adds to 75 ℃ with solution temperature in the step 5), and the tap water temperature that is used for rinsing afterwards is heated to 60 ℃.
4. the method for from the sub product that the high temperature scarlet look is produced, extracting high purity selenium according to claim 3 is characterized in that step 2) in when pH value to 3 the time, adding sodium hydroxide stabilized solution pH value.
5. the method for from the sub product that the high temperature scarlet look is produced, extracting high purity selenium according to claim 1; It is characterized in that; The method that detects selenium content in the solution in the step 4) is: get the filtered liq behind the heavy selenium of 2ml, 10% thiourea solution that splashes into 0.06ml does not show red, and the selenium that promptly reduces is accomplished.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107539962A (en) * | 2017-10-25 | 2018-01-05 | 肖永定 | It is a kind of to exempt from rinsing pre-treating method using the smart selenium of impure selenium production, selenium dioxide and high-purity selenium |
| CN107585746A (en) * | 2017-08-25 | 2018-01-16 | 金川集团股份有限公司 | A kind of method that selenium is reclaimed in the waste liquid from noble metal containing selenium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086029A (en) * | 2010-12-04 | 2011-06-08 | 金川集团有限公司 | Method for extracting selenium from selenium-contained material |
| CN102363522A (en) * | 2011-11-21 | 2012-02-29 | 郴州雄风稀贵金属材料股份有限公司 | Technology for extracting selenium from low-grade selenium-containing material |
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2012
- 2012-04-28 CN CN 201210129139 patent/CN102627262B/en active Active
Patent Citations (2)
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| CN102086029A (en) * | 2010-12-04 | 2011-06-08 | 金川集团有限公司 | Method for extracting selenium from selenium-contained material |
| CN102363522A (en) * | 2011-11-21 | 2012-02-29 | 郴州雄风稀贵金属材料股份有限公司 | Technology for extracting selenium from low-grade selenium-containing material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585746A (en) * | 2017-08-25 | 2018-01-16 | 金川集团股份有限公司 | A kind of method that selenium is reclaimed in the waste liquid from noble metal containing selenium |
| CN107539962A (en) * | 2017-10-25 | 2018-01-05 | 肖永定 | It is a kind of to exempt from rinsing pre-treating method using the smart selenium of impure selenium production, selenium dioxide and high-purity selenium |
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| CN102627262B (en) | 2013-12-18 |
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