FIELD: chemical industry. SUBSTANCE: method includes preliminary heating of heat carrier up to the temperature of inflammation of elementary sulfur by burning up fuel in the jet of a pre-combustion chamber. The heat carrier is heated further up to the temperature of automatic oxidation of metal sulfides with the aid of elemental sulfur. The feed of elemental sulfur and fuel to the pre-combustion chamber jet makes it possible to provide simultaneously from the beginning of the kiln starting for the necessary concentration of sulfur dioxide in gases outgoing from the kiln, which allows the use of the gases after they are cleaned from dusts for the production of sulfuric acid and the dusts caught, for the production of metals. This also eliminates environmental contamination and saves fuel and time of starting the kiln. EFFECT: higher efficiency of the kiln.
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PROCESS OF PREPARATION OF MOLYBDENUM OXIDE CONCENTRATE | 1993 |
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AUTOGENOUS CALCINATING-MELTING INSTALLATION | 2003 |
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0 |
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METHOD OF PROCESSING ZINC-CONTAINING MATERIALS | 0 |
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Authors
Dates
1994-10-30—Published
1992-04-15—Filed