RO103468A2 - Production method of tellurium of high purity - Google Patents
Production method of tellurium of high purityInfo
- Publication number
- RO103468A2 RO103468A2 RO13908989A RO13908989A RO103468A2 RO 103468 A2 RO103468 A2 RO 103468A2 RO 13908989 A RO13908989 A RO 13908989A RO 13908989 A RO13908989 A RO 13908989A RO 103468 A2 RO103468 A2 RO 103468A2
- Authority
- RO
- Romania
- Prior art keywords
- tellurium
- production method
- high purity
- filtration
- heating
- Prior art date
Links
- 229910052714 tellurium Inorganic materials 0.000 title abstract 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000001914 filtration Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 238000000265 homogenisation Methods 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 238000001226 reprecipitation Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/02—Elemental selenium or tellurium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Catalysts (AREA)
Abstract
The process comprises homogenisation of industrial tellurium, treatment with 50-70% concn. nitric acid, reprecipitation, filtration, and heating to 50-80 deg.C. This is followed by stagewise addn. of hydrazide hydrate solution. Heating at 50-80 deg. for 2-4 hours, filtration, washing, drying at 80-110 deg.C fusion and pouring into ingot moulds under reducing or inert atmosphere, completes the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO139089A RO103468B1 (en) | 1989-04-04 | 1989-04-04 | Production method of tellurium of high purity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO139089A RO103468B1 (en) | 1989-04-04 | 1989-04-04 | Production method of tellurium of high purity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO103468A2 true RO103468A2 (en) | 1991-11-02 |
| RO103468B1 RO103468B1 (en) | 1992-06-25 |
Family
ID=20124409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO139089A RO103468B1 (en) | 1989-04-04 | 1989-04-04 | Production method of tellurium of high purity |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO103468B1 (en) |
-
1989
- 1989-04-04 RO RO139089A patent/RO103468B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO103468B1 (en) | 1992-06-25 |
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