RO86328B1 - Procedeu de obtinere a dioxidului de telur - Google Patents
Procedeu de obtinere a dioxidului de telurInfo
- Publication number
- RO86328B1 RO86328B1 RO109951A RO10995183A RO86328B1 RO 86328 B1 RO86328 B1 RO 86328B1 RO 109951 A RO109951 A RO 109951A RO 10995183 A RO10995183 A RO 10995183A RO 86328 B1 RO86328 B1 RO 86328B1
- Authority
- RO
- Romania
- Prior art keywords
- tellurium dioxide
- tellurium
- dioxide
- precipitation
- suspension
- Prior art date
Links
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
- C01B19/004—Oxides; Hydroxides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a dioxidului de telur, prin oxidarea telurului tehnic cu acid azotic, urmata de tratarea dioxidului de telur astfel rezultat cu acid clorhidric si de separarea produsului prin precipitar cu hidroxid de sodiu, procedeu conform caruia, în scopul obtinerii produsului pur si cu greutate volumetrica ridicata, dupa precipitarea dioxidului de telur din tetraclorura de telur cu hidroxid de sodiu, la pH=5,2...6,5 dioxidul de telur astfel precipitat este spalat cu apa deionizata, la un raport S:L=1:3...1:4, pîna la eliminarea ionilor de sodiu, dupa care suspensia de dioxid de telur si apa deionizata, la unraport S:L=1,2, este supusa fierberii la temperatura de 102...105 degree C, timp de 30 min si apoi suspensia este filtrata iar recipientul obtinut se usuca la temparatura de 70...85 degree C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109951A RO86328B1 (ro) | 1983-02-09 | 1983-02-09 | Procedeu de obtinere a dioxidului de telur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109951A RO86328B1 (ro) | 1983-02-09 | 1983-02-09 | Procedeu de obtinere a dioxidului de telur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO86328A2 RO86328A2 (ro) | 1985-03-15 |
| RO86328B1 true RO86328B1 (ro) | 1985-03-31 |
Family
ID=20112653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO109951A RO86328B1 (ro) | 1983-02-09 | 1983-02-09 | Procedeu de obtinere a dioxidului de telur |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO86328B1 (ro) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271137B (zh) * | 2015-11-18 | 2017-12-01 | 金川集团股份有限公司 | 一种从碲化铜渣中提取二氧化碲的方法 |
-
1983
- 1983-02-09 RO RO109951A patent/RO86328B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO86328A2 (ro) | 1985-03-15 |
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