Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkaline earth metal
Patent
1993-05-11
1995-03-21
Langel, Wayne
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Alkaline earth metal
4235192, 423566, C01B 1720, C01B 1744
Patent
active
053993233
ABSTRACT:
A means to increase the reducing potential of natural gas used in the reduction of sulfates such as gypsum. A reducing mixture of natural gas and air (or oxygen) is heated prior to reduction of the sulfate. For gypsum reduction, heating the reducing mixture to 1500.degree. F. (816.degree. C.) prior to gypsum reduction increased the gypsum conversion to calcium sulfide to above 65% at a reactor temperature of 1400.degree.-1500.degree. F. (700.degree.-816.degree. C.) verses less than a 40% conversion rate when an unheated reducing mixture was used.
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Paisley Mark A.
Pugsley Kenneth D.
Gas Research Institute
Langel Wayne
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