Title:
METHOD FOR TREATMENT OF RESIDUES FROM ORGANOCHLOROSILANE AND/OR CHLOROSILANSYNTHESIS
Document Type and Number:
WIPO Patent Application WO/1995/027086
Kind Code:
A1
Abstract:
The present invention relates to method for treatment of residues originating from organochlorosilanes- and/or chlorosilane syntheses. The residues are, optionally together with an oxidation agent, supplied to a smelting furnace where the residues are melted in order to form a molten metallic phase comprising at least of silicon and copper and a slag phase, tapping of the metallic melt and an inert slag from the smelting furnace. Copper is dissolved from the solidified silicon-copper containing metallic phase by leaching with a mineral acid in order to produce a solid product substantially containing silicon, whereafter copper is recovered from the leach solution.
Inventors:
EIKELAND INGER JOHANNE (NO)
GUNDERSEN ROALD (NO)
JENSEN RAGNHILD (NO)
GUNDERSEN ROALD (NO)
JENSEN RAGNHILD (NO)
Application Number:
PCT/NO1995/000045
Publication Date:
October 12, 1995
Filing Date:
March 02, 1995
Export Citation:
Assignee:
ELKEM AS (NO)
EIKELAND INGER JOHANNE (NO)
GUNDERSEN ROALD (NO)
JENSEN RAGNHILD (NO)
EIKELAND INGER JOHANNE (NO)
GUNDERSEN ROALD (NO)
JENSEN RAGNHILD (NO)
International Classes:
B09B3/00; B01J23/94; B01J27/28; C01B33/02; C01B33/037; C01B33/107; C07F7/12; C07F7/16; C22B3/04; C22B7/00; C22B15/00; (IPC1-7): C22B7/00
Domestic Patent References:
| WO1986005211A1 | 1986-09-12 |
Foreign References:
| DE4205980A1 | 1993-09-02 | |||
| DE2842840A1 | 1979-04-19 | |||
| DE4227568C2 | 1994-11-24 | |||
| US5274158A | 1993-12-28 |
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