RO87630B1 - Procedeu pentru obtinerea acidului fluosilicic - Google Patents
Procedeu pentru obtinerea acidului fluosilicicInfo
- Publication number
- RO87630B1 RO87630B1 RO111524A RO11152483A RO87630B1 RO 87630 B1 RO87630 B1 RO 87630B1 RO 111524 A RO111524 A RO 111524A RO 11152483 A RO11152483 A RO 11152483A RO 87630 B1 RO87630 B1 RO 87630B1
- Authority
- RO
- Romania
- Prior art keywords
- obtaining
- fluorine
- sulfuric acid
- attack
- subjected
- Prior art date
Links
Landscapes
- Silicon Compounds (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Procedeul pentru obtinerea acidului fluosilicic din fluorina de calitate inferioara caracterizat prin aceea ca fluorina macinata avand o finete de 10....20% refuz pe sita de 0,2 mm si un continut de 78,8% CaF2 cu sau fara adaos de SiO2 siplimentar necesar formarii SiF4, se suspenda într-o solutie de acid sulfuric de concentratie 50....65% la temperatura de 70....80 degree C, dupa care suspensia astfel formata este supusa atacului cu acid sulfuric de concentratie 98% timp de 2 ore, la temperaturi de 135.....150 degree C si cu o ratie totala de acid sulfuric de 3,5....4 ori mai mare decat cea stoichiometrica raportata la continutul de CaO din fluorina, gazele cu fluor degajate se absorb în apa, obtinîndu-se acid flupsilicic de concentratie 15....20% iar suspensia rezultata din reactie se supune filtrarii si spalarii cu apa, obtinandu-se ca filtrat solutii de acid sulfuric care sunt recirculate în atacul fluorinei si un precipitat de sulfat de calciu-anhidrit, spalat, care se evacueaza la halda dupa oneutralizare prealabila.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO83111524A RO87630A2 (ro) | 1983-07-04 | 1983-07-04 | Procedeu pentru obtinerea acidului fluosilicic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO83111524A RO87630A2 (ro) | 1983-07-04 | 1983-07-04 | Procedeu pentru obtinerea acidului fluosilicic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO87630B1 true RO87630B1 (ro) | 1985-10-01 |
| RO87630A2 RO87630A2 (ro) | 1985-10-31 |
Family
ID=20113352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO83111524A RO87630A2 (ro) | 1983-07-04 | 1983-07-04 | Procedeu pentru obtinerea acidului fluosilicic |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO87630A2 (ro) |
-
1983
- 1983-07-04 RO RO83111524A patent/RO87630A2/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO87630A2 (ro) | 1985-10-31 |
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