CN101195478A - Method for removing foreign matter selenium in solid tellurium powder - Google Patents
Method for removing foreign matter selenium in solid tellurium powder Download PDFInfo
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- CN101195478A CN101195478A CNA200710303633XA CN200710303633A CN101195478A CN 101195478 A CN101195478 A CN 101195478A CN A200710303633X A CNA200710303633X A CN A200710303633XA CN 200710303633 A CN200710303633 A CN 200710303633A CN 101195478 A CN101195478 A CN 101195478A
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Abstract
Provided is a process for removing selenium impurities in solid tellurium powder, which relates to a process for removing selenium impurities in tellurium containing intermediate materials which are produced in the process of wet treating copper anode slime or in tellurium containing dregs which are produced in the process of pyrogenic attack of copper, lead anode slime. The invention is characterized by that the removing process of the invention is that tellurium coarse powder is added into sodium sulphite solution to be dissolved and then filtered, filtration residue is washed by water and the selenium impurities in solid tellurium powder are removed. The process of the invention realizes high efficient separation of solid selenium and tellurium, which enables the removal efficiency of the selenium in tellurium coarse powder to be more than 90.4%, content of other impurity elements to be lowered at different degrees, and tellurium content in solid tellurium powder to be more than 96%, thereby greatly increasing the main grade of tellurium in solid tellurium powder.
Description
Technical field
A kind of method that removes foreign matter selenium in the solid tellurium powder, relate to a kind of be used for that wet processing copper anode mud technology produces contain the removal methods that contains foreign matter selenium in the tellurium slag that produces in tellurium intermediate material or pyrogenic attack copper, the lead anode slurry technology.
Background technology
Copper anode mud is the main source that extracts selen-tellurjum, and the method for extraction has sulfurization roasting method, soda smelting process etc.Adopting the pyrogenic attack copper anode mud, is to reclaim tellurium from the soda slag of copper anode mud output; Adopt wet processing to handle copper anode mud, mainly reclaim tellurium from the plumbous tellurium slag of minute tellurium process output, main technique is that alkali soaks-Na
2Heavy tellurium-the alkali of S removal of impurities-neutralization is molten-Na
2S, CaCl
2Purification-secondary neutralization-alkali dissolution-electrodeposition process, technological process is tediously long, and impurity-eliminating effect is bad, particularly adopts Na in the alkali immersion liquid
2The S method purifies As, the Sb effect is bad, simultaneously owing to adopt Na
2The S removal of impurities, the S that contains in the solution
2-Easily produce H in secondary and in the wastewater treatment process
2S gas causes environmental pollution.Also have and introduce the research of adopting calcination method and reduction method to remove As, Sb, but operation complexity, labour intensity is big, the decreasing ratio of As, Sb has only 80.7%, does not consider that especially removing of selenium, quality product are influenced greatly by the raw material composition, quality fluctuates easily, for this reason, develop a kind of method that removes foreign matter selenium in the solid tellurium powder, seem very important.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the deficiency of above-mentioned technology, to provide a kind of selenium that reduces to the influence of tellurium quality product, the method that removes foreign matter selenium in the solid tellurium powder of minimizing quality fluctuation.
The objective of the invention is to be achieved through the following technical solutions.
A kind of method that removes foreign matter selenium in the solid tellurium powder is characterized in that its subtractive process is coarse tellurium powder to be added sodium sulfite solution dissolve, and filters, and filter residue washes with water and removes foreign matter selenium in the solid tellurium powder.
A kind of method that removes foreign matter selenium in the solid tellurium powder of the present invention, the weight percent concentration that it is characterized in that described dissolution process sodium sulfite solution is 5%-40%, sodium sulfite solution and coarse tellurium powder liquid-solid ratio weight ratio are 5-15: 1 temperature of reaction is 80-95 ℃, and the reaction times is 0.5-5 hour.
Method of the present invention is on the basis of impurity element selenium morphological research in to solid tellurium powder, has determined S-WAT deselenization technology.A kind of add under suitable temperature certain density sodium sulfite solution and stirring are provided, have made the reaction of selenium and S-WAT form solubility seleno S-WAT (Na
2SeSO
3), realize solid selenium and the effective isolating method of tellurium, reduced the content of foreign matter selenium in the solid tellurium powder effectively, and also after the acidifying of gained seleno sodium sulfite solution, the elemental selenium that also can settle out, selenium also can obtain efficient recovery.
Adopt method of the present invention, the decreasing ratio that can make selenium in the solid tellurium powder is greater than 90.4%, also in various degree the reduction of other impurity content, and tellurium content is greater than 96% in the solid tellurium powder.Also recyclable elemental selenium from the leach liquor of S-WAT leaching coarse tellurium powder.
Description of drawings
Fig. 1 is the process flow diagram of the inventive method.
Embodiment
A kind of method that removes foreign matter selenium in the solid tellurium powder, be mixed with the solution that concentration is 5%-40% with S-WAT reagent, leach solid tellurium powder, sodium sulfite solution is 5-15 with the volume mass ratio of solid tellurium powder: 1, temperature remains on 80 ℃-95 ℃, stirring reaction 0.5-5 hour, the after-filtration that reacts completely, filter residue (deselenization solid tellurium powder) washes with water, the washing terminal point is that leached mud is neutrality, after the acidifying of filtrate seleno sodium sulfite solution, the elemental selenium that can settle out, selenium obtains efficient recovery.
Method of the present invention is used for the production that copper anode mud reclaims tellurium, and the decreasing ratio that can make the selenium in the solid tellurium powder by this method is greater than 90.4%, also in various degree the reduction of other impurity content, and tellurium content brings up to 96.84% in the solid tellurium powder.Also recyclable elemental selenium from the leach liquor of S-WAT leaching solid tellurium powder.Tellurium powder behind the deselenization has been produced the product that meets the various grades of YS/T222-1996 tellurium ingot standard through the processing of subsequent handling.
Embodiment 1
At first add water and be made into 15% solution, press sodium sulfite solution and added solid tellurium powder than 8: 1, stir and heat up with the solid tellurium powder volume mass with analytically pure S-WAT reagent, when treating that temperature is raised to 80 ℃, 2 hours after-filtration of isothermal reaction.Filter residue is that deselenization tellurium powder washes with water to neutrality, and tellurium content is 96.8% in the tellurium powder after the oven dry, and the decreasing ratio of selenium is 91.2%.
Embodiment 2
At first add water and be made into 30% solution, press sodium sulfite solution and added solid tellurium powder than 12: 1, stir and heat up with the solid tellurium powder volume mass with analytically pure S-WAT reagent, when treating that temperature is raised to 90 ℃, 4 hours after-filtration of isothermal reaction.Filter residue is that deselenization tellurium powder washes with water to neutrality, and tellurium content is 97.92% in the deselenization tellurium powder after the oven dry, and the decreasing ratio of selenium is 92.8%.
Embodiment 3
At first add water and be made into 40% solution, press sodium sulfite solution and added solid tellurium powder than 15: 1, stir and heat up with the solid tellurium powder volume mass with analytically pure S-WAT reagent, when treating that temperature is raised to 95 ℃, 0.5 hour after-filtration of isothermal reaction.Filter residue is that deselenization tellurium powder washes with water to neutrality, and tellurium content is 96.8% in the tellurium powder after the oven dry, and the decreasing ratio of selenium is 91.2%.
Embodiment 4
At first add water and be made into 5% solution, press sodium sulfite solution and added solid tellurium powder than 5: 1, stir and heat up with the solid tellurium powder volume mass with analytically pure S-WAT reagent, when treating that temperature is raised to 90 ℃, 5 hours after-filtration of isothermal reaction.Filter residue is that deselenization tellurium powder washes with water to neutrality, and tellurium content is 97.92% in the deselenization tellurium powder after the oven dry, and the decreasing ratio of selenium is 92.8%.
Claims (2)
1. a method that removes foreign matter selenium in the solid tellurium powder is characterized in that its subtractive process is coarse tellurium powder to be added sodium sulfite solution dissolve, and filters, and filter residue washes with water and removes foreign matter selenium in the solid tellurium powder.
2. a kind of method that removes foreign matter selenium in the solid tellurium powder according to claim 1, the weight percent concentration that it is characterized in that described dissolution process sodium sulfite solution is 5%-40%, sodium sulfite solution and coarse tellurium powder liquid-solid ratio weight ratio are 5-15: 1 temperature of reaction is 80-95 ℃, and the reaction times is 0.5-5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710303633XA CN101195478A (en) | 2007-12-20 | 2007-12-20 | Method for removing foreign matter selenium in solid tellurium powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710303633XA CN101195478A (en) | 2007-12-20 | 2007-12-20 | Method for removing foreign matter selenium in solid tellurium powder |
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| CN101195478A true CN101195478A (en) | 2008-06-11 |
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| CNA200710303633XA Pending CN101195478A (en) | 2007-12-20 | 2007-12-20 | Method for removing foreign matter selenium in solid tellurium powder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583264A (en) * | 2012-02-03 | 2012-07-18 | 昆明冶金研究院 | Method for leaching selenium in acid mud by using sodium sulfite |
| CN104003359A (en) * | 2014-06-04 | 2014-08-27 | 云南铜业科技发展股份有限公司 | Comprehensive recovery method for selenium and tellurium in selenium/tellurium-containing sodium nitrate |
| CN105441970A (en) * | 2015-11-18 | 2016-03-30 | 金川集团股份有限公司 | New method for removing impurities in tellurium electrolyte |
| CN106542506A (en) * | 2016-12-08 | 2017-03-29 | 湖南水口山有色金属集团有限公司 | A kind of method that selenium is reclaimed from heavy tellurium waste liquid |
| CN106636661A (en) * | 2016-12-15 | 2017-05-10 | 中南大学 | Method for selectively separating and recovering tellurium and antimony from tellurium residues |
| CN111689479A (en) * | 2020-07-01 | 2020-09-22 | 昆明冶金研究院有限公司 | Medicament SC-500 for removing As, Pb and Sb and preparation method and application thereof |
-
2007
- 2007-12-20 CN CNA200710303633XA patent/CN101195478A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583264A (en) * | 2012-02-03 | 2012-07-18 | 昆明冶金研究院 | Method for leaching selenium in acid mud by using sodium sulfite |
| CN104003359A (en) * | 2014-06-04 | 2014-08-27 | 云南铜业科技发展股份有限公司 | Comprehensive recovery method for selenium and tellurium in selenium/tellurium-containing sodium nitrate |
| CN105441970A (en) * | 2015-11-18 | 2016-03-30 | 金川集团股份有限公司 | New method for removing impurities in tellurium electrolyte |
| CN106542506A (en) * | 2016-12-08 | 2017-03-29 | 湖南水口山有色金属集团有限公司 | A kind of method that selenium is reclaimed from heavy tellurium waste liquid |
| CN106636661A (en) * | 2016-12-15 | 2017-05-10 | 中南大学 | Method for selectively separating and recovering tellurium and antimony from tellurium residues |
| CN106636661B (en) * | 2016-12-15 | 2018-06-26 | 中南大学 | A kind of method of Selective Separation recycling tellurium and antimony in slag from tellurium |
| CN111689479A (en) * | 2020-07-01 | 2020-09-22 | 昆明冶金研究院有限公司 | Medicament SC-500 for removing As, Pb and Sb and preparation method and application thereof |
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Open date: 20080611 |