FIELD: removal of admixtures from residual silicon powder obtained in production of organochlorosilanes and chlorosilanes.
SUBSTANCE: proposed method includes subjecting the residue to magnetic separation at obtaining relatively pure non-magnetic fraction at increased content of silicon and relatively contaminated magnetic fraction at lower content of silicon as compared with nonmagnetic fraction.
EFFECT: simplified procedure; low cost of process.
7 cl, 1 dwg, 4 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PROCESSING RESIDUES FROM SYNTHESIS OF ORGANOCHLOROSILANES AND/OR CHLOROSILANES WITH RECOVERY OF SILICON AND COPPER | 1995 |
|
RU2098501C1 |
| METHOD OF PRODUCING TRICHLOROSILANE | 2008 |
|
RU2394762C2 |
| METHOD OF PRODUCING SILICON CARBIDE LAYERS | 1993 |
|
RU2087416C1 |
| METHOD OF UPGRADING SILICON-CONTAINING RESIDUES OBTAINED AFTER ETCHING OF COPPER-CONTAINING RESIDUES IN SYNTHESIS OF CHLOROSILANES | 1995 |
|
RU2106302C1 |
| METHOD FOR SYNTHESIS OF HYDROGEN-CONTAINING CHLORO- AND ORGANOCHLOROSILANES | 0 |
|
SU1766925A1 |
| METHOD OF PRODUCING POLYHEDRAL ORGANOSILSESQUIOXANES | 2010 |
|
RU2444539C1 |
| METHOD OF PRODUCING CHLOROSILANES, METHOD OF CHLORINATING SILICON DIOXIDE-CONTAINING MATERIAL AND METHOD OF CONVERTING TETRACHLOROSILANE TO TRICHLOROSILANE | 2008 |
|
RU2373147C1 |
| METHOD OF OBTAINING FINE SILICA | 2010 |
|
RU2447020C1 |
| PROCESS FOR PREPARING CONTACT COMPOSITION FOR SYNTHESIS OF CHLORO- OR ORGANOCHLOROSILANES | 0 |
|
SU1131877A1 |
| METHOD FOR COMPLEX PROCESSING OF ALUMINA-CONTAINING RAW MATERIALS | 2022 |
|
RU2787546C1 |
