RO91333B1 - Procedeu de recuperare a principalelor componente din slamul rosu rezultat la fabricarea aluminei - Google Patents
Procedeu de recuperare a principalelor componente din slamul rosu rezultat la fabricarea alumineiInfo
- Publication number
- RO91333B1 RO91333B1 RO11788285A RO11788285A RO91333B1 RO 91333 B1 RO91333 B1 RO 91333B1 RO 11788285 A RO11788285 A RO 11788285A RO 11788285 A RO11788285 A RO 11788285A RO 91333 B1 RO91333 B1 RO 91333B1
- Authority
- RO
- Romania
- Prior art keywords
- iii
- solutions
- solution
- alumina
- nh2o
- Prior art date
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Procedeul, conform inventiei, consta în sinterizarea partiala a sistemului: slam rosu - NaOH-CaO, în proportie de 71%, 27,5% si, respectiv 1,5%, la temperaturi de circa 450-550 degree C, urmata de dispersarea în sistem apos cu formare de hidroxocomplecsi solubili cu Al (III), Cr (III), V (V) etc., care se separa de componentii cu Ti (IV), Fe(III) si altii. Solutiile alcaline de aluminati au un modul caustic ce permite introducerea lor în circuitul de fabricatie Bayer. în alta varianta solutiile de aluminati se trateaza cu solutii apoase de NH4Cl cînd precipita Al2O3. nH2O si se separa de solutie cu Cr(III), V(V) etc. Dioxidul de titan, din reziduul ramas la separarea solutiei de aluminati, se dizolva în solutia apoasa de acid clorhidric 1:1, iar dupa filtrare solutia se concentreaza la cald, cu recuperarea HCl gazos, cînd rezulta o suspensie care prin diluare la pH 1 separa TiO2 . nH2O pur. Solutiile mume se trateaza cu NH3 gazos, rezultat la separarea Al2O3 prin varianta a II-a, sau cu solutii de NH4OH, Na2CO3 cînd rezulta Fe2O3 -nH2O, care se prelucreaza alaturi de reziduurile solide cu Fe(III), ramase la separarea solutiilor cu Ti (IV), prin procedee pirometalurgice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO11788285A RO91333B1 (ro) | 1985-03-06 | 1985-03-06 | Procedeu de recuperare a principalelor componente din slamul rosu rezultat la fabricarea aluminei |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO11788285A RO91333B1 (ro) | 1985-03-06 | 1985-03-06 | Procedeu de recuperare a principalelor componente din slamul rosu rezultat la fabricarea aluminei |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO91333A2 RO91333A2 (ro) | 1987-03-30 |
| RO91333B1 true RO91333B1 (ro) | 1987-03-31 |
Family
ID=20116710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO11788285A RO91333B1 (ro) | 1985-03-06 | 1985-03-06 | Procedeu de recuperare a principalelor componente din slamul rosu rezultat la fabricarea aluminei |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO91333B1 (ro) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR20090100008A (el) * | 2009-01-12 | 2010-09-09 | Νικολαος Παπαδοπουλος | Μεθοδος αποκτησης εκμεταλλευσιμων προϊοντων απο το στερεο αποβλητο της ερυθρας ιλυος |
-
1985
- 1985-03-06 RO RO11788285A patent/RO91333B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO91333A2 (ro) | 1987-03-30 |
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