Metallurgical apparatus – Means for treating ores or for extracting metals – By means applying heat to work – e.g. – furnace
Patent
1990-06-21
1992-05-19
Rosenberg, Peter D.
Metallurgical apparatus
Means for treating ores or for extracting metals
By means applying heat to work, e.g., furnace
266172, C21B 716
Patent
active
051141221
ABSTRACT:
An apparatus and method are disclosed for processing glass-making materials under oxidizing conditions, and for processing materials, such as hazardous or toxic wastes, or smelting under reducing conditions. As a glass-making apparatus the invention includes a cyclone melt reactor for forming a liquid glass melt and a combustion preheater for receiving the glass-making materials and combusting the fuel and oxidant therein to heat the glass batch materials to a temperature at least equal to the melt temperature of the glass batch material. The combustion preheater has an outlet connected to the glass melt reactor, and at least one inlet is provided into the combustion preheater for introducing oxidizing materials and for creating a well-stirred region within the combustion preheater means. Supplemental heat can be provided by introducing a heated transfer gas into the combustion preheater, and a fuel gasifier can be provided for producing a fuel gas before the fuel gas is injected into the combustion preheater.
For processing materials under reducing conditions, the cyclone melt reactor is connected to a preheater/reducing chamber and preheated reducing gas is introduced into the reducing chamber in such a manner that a well-stirred region is created within the reducing chamber. Heated transfer gas from a supplemental heat source and reducing gas from a fuel gasifier can also be introduced into the reducing chamber.
REFERENCES:
patent: 2894831 (1959-07-01), Old
patent: 3163520 (1964-12-01), Collin
patent: 4205830 (1980-03-01), Beggs
patent: 4958808 (1990-09-01), Hauk
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