Patent GB-401038-A (GB)
Title: Process for the production of products containing aluminium silicosulphides
IPC: C01B33/00
Filed: 1932-06-15
Abstract: Products containing aluminium silicosulphides, or mixed sulphides of aluminium and silicon, are obtained by reacting an alloy or mixture of aluminium and silicon, preferably in the form of a fine powder, with sulphur at an elevated temperature.  The alloy used may be the residue obtained by liquating aluminium-silicon alloys rich in silicon for the removal of a part of their silicon or be that formed by reduction of materials containing alumina and silica.  The reaction may be initiated by local heating or by a primer, and the conditions be such that it proceeds with the mass in a molten state; in the latter case briquettes of the reaction mixture may be added to the molten mass as the reaction proceeds.  The amount of sulphur used should not exceed by more than 3 per cent that theoretically necessary.  In one example not involving fusion a red hot iron rod is used to start the reaction; in another a priming charge of powdered aluminium and silicon is employed and fusion takes place.  By incorporating other metals such as iron or suitable compounds thereof in the reaction mixture, mixed sulphides containing also sulphides of these metals may be obtained.  The products, which furnish sulphuretted hydrogen on contact with water, may be used for vulcanizing rubber, destroying pests, removing hair from pelts, cosmetic purposes, and the preparation of luminous paints.ALSO:Products containing aluminium silicosulphides, or mixed sulphides of aluminium and silicon, which furnish sulphuretted hydrogen on contact with water, are used for vulcanizing rubber. They are obtained by reacting an alloy or mixture of aluminium and silicon, preferably in the form of a fine powder, with sulphur at an elevated temperature.  The reaction may be initiated by local heating or by a primer, and the conditions be such that it proceeds with the mass in a molten state; in the latter case briquettes of the reaction mixture may be added to the molten mass as the reaction proceeds. The amount of sulphur used should not exceed by more than 3 per cent that theoretically necessary.  In one example not involving fusion a red-hot iron rod is used to start the reaction; in another a priming charge of powdered aluminium and silicon is employed and fusion takes place.  By incorporating other metals such as iron or suitable compounds thereof in the reaction mixture, mixed sulphides containing also sulphides of these metals may be obtained.ALSO:Products containing aluminium silicosulphides, or mixed sulphides of aluminium and silicon, which furnish sulphuretted hydrogen on contact with water, are used for destroying pests. They are obtained by reacting an alloy or mixture of aluminium and silicon, preferably in the form of a fine powder, with sulphur at an elevated temperature.  The reaction may be initiated by local heating or by a primer, and the conditions be such that it proceeds with the mass in a molten state; in the latter case briquettes of the reaction mixture may be added to the molten mass as the reaction proceeds.  The amount of sulphur used should not exceed by more than 3 per cent that theoretically necessary.  In one example not involving fusion a red-hot iron rod is used to start the reaction; in another a priming charge of powdered aluminium and silicon is employed and fusion takes place.  By incorporating other metals such as iron or suitable compounds thereof in the reaction mixture, mixed sulphides containing also sulphides of these metals may be obtained.