CN104445092A - Method for preparing anhydrous sodium thiosulfate from platinum family metal desulfurization solution - Google Patents
Method for preparing anhydrous sodium thiosulfate from platinum family metal desulfurization solution Download PDFInfo
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- CN104445092A CN104445092A CN201410732795.5A CN201410732795A CN104445092A CN 104445092 A CN104445092 A CN 104445092A CN 201410732795 A CN201410732795 A CN 201410732795A CN 104445092 A CN104445092 A CN 104445092A
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- Prior art keywords
- sodium thiosulfate
- platinum metals
- anhydrous sodium
- family metal
- anhydrous
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/64—Thiosulfates; Dithionites; Polythionates
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for preparing anhydrous sodium thiosulfate from a platinum family metal desulfurization solution, relates to recycling and reuse of waste liquids generated in the platinum family metal extraction process, and in particular relates to a method for preparing anhydrous sodium thiosulfate from a desulfurization solution generated after platinum family metal is desulfurized. The method is characterized by comprising the following steps: (1) filtering the platinum family metal desulfurization solution; (2) heating and concentrating the filtrate; (3) filtering the concentrated liquid; (4) cooling to crystallize; (5) filtering the crystal; and (6) drying, thereby obtaining sodium thiosulfate. According to the method, the desulfurization solution generated in the platinum family metal extraction process is adopted as a raw material for preparing anhydrous sodium thiosulfate, the waste liquid is recycled and reused, the anhydrous sodium thiosulfate is simple in preparation process step and high in production efficiency, and the quality of the prepared anhydrous sodium thiosulfate meets the one-class product standard of HG/T2328-2006.
Description
Technical field
Use platinum metals doctor solution to prepare a method for Sodium Thio Sulphate(Anhydrous), relate to the recycling of waste liquid in the extractive process of platinum metals, after particularly relating to platinum metals desulfurization, the method for Sodium Thio Sulphate(Anhydrous) prepared by gained doctor solution.
Background technology
The mineral products platinum metals of China is mainly extracted from copper nickel sulfide mineral, ore adopts the method for pyrometallurgical smelting to obtain once high nickel matte by the flotation concentrate that bulk flotation produces, the platinum metals of 60-70% is about had to enter in a cupronickel through overground floating operation, because the platinum metals grade in a cupronickel is lower, allocate a cupronickel into sulfide containing material and carry out sulfiding smelting and blowing, the secondary copper nickelalloy that output platinum metals grade is higher.Because in secondary copper nickelalloy, base metal and sulphur account for 98% ~ 99% of total mass, therefore, need to remove the base metals such as ambrose alloy iron further to secondary copper nickelalloy before platinum metals is extracted and sulphur comes enrichment platinum metals.Chloridizing with controlled voltage technique is adopted effectively to be separated with base metal platinum metals, carrying out S-WAT desulfurization to chloridizing with controlled voltage slag subsequently can effectively desulfurization and make the further enrichment in platinum metals, obtain solution after desulfurization and be mainly hypo solution, if this solution is recycled, directly qualified discharge after wastewater treatment, processing cost is higher, has not only wasted resource but also has increased the output of enterprise cost, reduced Business Economic Benefit.
Summary of the invention
Object of the present invention is exactly the deficiency existed for above-mentioned prior art, provides a kind of with the recycling realizing doctor solution, reduces enterprise cost and exports, and the method for Sodium Thio Sulphate(Anhydrous) prepared by the use platinum metals doctor solution improving Business Economic Benefit.
The object of the invention is to be achieved through the following technical solutions.
Use platinum metals doctor solution to prepare a method for Sodium Thio Sulphate(Anhydrous), it is characterized in that the step of preparation process comprises successively: platinum metals doctor solution filters by (1); (2) filtrate heating is concentrated; (3) concentrated solution is filtered; (4) crystallisation by cooling; (5) xln is filtered out; (6) drying obtains Sulfothiorine.
A kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) of the present invention, is characterized in that its step (1) adopts secondary filter.
A kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) of the present invention, is characterized in that its step (2) filtrate is heated to 80 ~ 95 DEG C of temperature, by 1st effective evaporator and 2nd effect evaporator, this solution is concentrated into 20 ~ 25Be.
A kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) of the present invention, is characterized in that its step (5) is to filtrate crystallisation by cooling, uses negative pressure filter to filter.
A kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) of the present invention, it is characterized in that its step (6) be adopt vacuum drier carry out drying at 30 ~ 35 DEG C, time of drying 3 ~ 7h.
Method of the present invention, use in the leaching process of platinum metals and produce doctor solution as the raw material preparing Sodium Thio Sulphate(Anhydrous), waste liquid is recycled, Sodium Thio Sulphate(Anhydrous) step of preparation process is simple, production efficiency is high, and obtained Sodium Thio Sulphate(Anhydrous) quality reaches HG/T2328-2006 first grade standard.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of method of the present invention.
Embodiment
Use platinum metals doctor solution to prepare a method for Sodium Thio Sulphate(Anhydrous), the step of preparation process comprises successively: platinum metals doctor solution filters by (1); (2) filtrate heating is concentrated; (3) concentrated solution is filtered; (4) crystallisation by cooling; (5) xln is filtered out; (6) drying obtains Sulfothiorine.
Implementation column 1
Measure platinum metals doctor solution 500L and carry out secondary filter, control temperature is at 87 DEG C again, carry out heating by 1st effective evaporator, 2nd effect evaporator and triple-effect evaporator to concentrate, doctor solution is concentrated into 24Be, cooling obtains crystallisate and uses negative pressure filter to filter and put into vacuum drier and carry out drying at 33 DEG C, time of drying 5h, cooling taking-up obtain Sodium Thio Sulphate(Anhydrous) finished product, chemically examining its sodium thiosulfate content is by analysis 98.5%.
Implementation column 2
Measure platinum metals doctor solution 500L and carry out secondary filter, control temperature is at 85 DEG C again, carry out heating by 1st effective evaporator, 2nd effect evaporator and triple-effect evaporator to concentrate, doctor solution is concentrated into 25Be, cooling obtains crystallisate and uses negative pressure filter to filter and put into vacuum drier and carry out drying at 32 DEG C, time of drying 6h, cooling taking-up obtain Sodium Thio Sulphate(Anhydrous) finished product, chemically examining its sodium thiosulfate content is by analysis 98.7%.
Claims (5)
1. use platinum metals doctor solution to prepare a method for Sodium Thio Sulphate(Anhydrous), it is characterized in that the step of preparation process comprises successively: platinum metals doctor solution filters by (1); (2) filtrate heating is concentrated; (3) concentrated solution is filtered; (4) crystallisation by cooling; (5) xln is filtered out; (6) drying obtains Sulfothiorine.
2. a kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) according to claim 1, is characterized in that its step (1) adopts secondary filter.
3. a kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) according to claim 1, it is characterized in that its step (2) filtrate is heated to 80 ~ 95 DEG C of temperature, by 1st effective evaporator and 2nd effect evaporator, this solution is concentrated into 20 ~ 25Be.
4. a kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) according to claim 1, is characterized in that its step (5) is to filtrate crystallisation by cooling, uses negative pressure filter to filter.
5. a kind of method using platinum metals doctor solution to prepare Sodium Thio Sulphate(Anhydrous) according to claim 1, it is characterized in that its step (6) be adopt vacuum drier carry out drying at 30 ~ 35 DEG C, time of drying 3 ~ 7h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732795.5A CN104445092A (en) | 2014-12-07 | 2014-12-07 | Method for preparing anhydrous sodium thiosulfate from platinum family metal desulfurization solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732795.5A CN104445092A (en) | 2014-12-07 | 2014-12-07 | Method for preparing anhydrous sodium thiosulfate from platinum family metal desulfurization solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104445092A true CN104445092A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410732795.5A Pending CN104445092A (en) | 2014-12-07 | 2014-12-07 | Method for preparing anhydrous sodium thiosulfate from platinum family metal desulfurization solution |
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| CN (1) | CN104445092A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148689A (en) * | 2016-08-29 | 2016-11-23 | 金川集团股份有限公司 | Oxygen pressure acidleach efficiently concentrating gold and the method for platinum group metal concentrate |
| CN115893695A (en) * | 2021-09-29 | 2023-04-04 | 中国石油化工股份有限公司 | Method for producing sodium thiosulfate by utilizing catalytic cracking flue gas desulfurization wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5405430A (en) * | 1994-04-12 | 1995-04-11 | Groves; William D. | Recovery of precious metals from evaporite sediments |
| CN102978400A (en) * | 2012-10-12 | 2013-03-20 | 金川集团股份有限公司 | Method for recovering rare noble metal from waste water slag of process of producing silver and selenium |
| CN103205580A (en) * | 2013-04-19 | 2013-07-17 | 金川集团股份有限公司 | Desulfurization method in noble metal enriching process |
| CN103352125A (en) * | 2013-07-01 | 2013-10-16 | 金川集团股份有限公司 | Method for high-efficiently enriching gold and platinum metal from complex low-grade chlorine soaked slag |
-
2014
- 2014-12-07 CN CN201410732795.5A patent/CN104445092A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5405430A (en) * | 1994-04-12 | 1995-04-11 | Groves; William D. | Recovery of precious metals from evaporite sediments |
| CN102978400A (en) * | 2012-10-12 | 2013-03-20 | 金川集团股份有限公司 | Method for recovering rare noble metal from waste water slag of process of producing silver and selenium |
| CN103205580A (en) * | 2013-04-19 | 2013-07-17 | 金川集团股份有限公司 | Desulfurization method in noble metal enriching process |
| CN103352125A (en) * | 2013-07-01 | 2013-10-16 | 金川集团股份有限公司 | Method for high-efficiently enriching gold and platinum metal from complex low-grade chlorine soaked slag |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148689A (en) * | 2016-08-29 | 2016-11-23 | 金川集团股份有限公司 | Oxygen pressure acidleach efficiently concentrating gold and the method for platinum group metal concentrate |
| CN106148689B (en) * | 2016-08-29 | 2018-12-07 | 金川集团股份有限公司 | The method that oxygen presses acidleach efficiently concentrating gold and platinum group metal concentrate |
| CN115893695A (en) * | 2021-09-29 | 2023-04-04 | 中国石油化工股份有限公司 | Method for producing sodium thiosulfate by utilizing catalytic cracking flue gas desulfurization wastewater |
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Application publication date: 20150325 |