Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1987-07-22
1989-10-31
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 43, 75 44R, 75 44S, 75 65R, 75 72, 75 76, 65135, 65335, 266185, 266218, 266900, C22B 916, F27B 124, C03B 300, C03B 512
Patent
active
048774499
ABSTRACT:
A vertical shaft melting furnace wherein meltable solids are charged to the upper region of a bed supported only by a fluid cooled support grid having openings smaller than the average diameter of the charged solids wherein submerged combustion is maintained in a melt pool below the bed of solids and combustion product gases of the submerged combustion are passed upwardly through the bed of solids preheating and melting a substantial portion of the solids forming melt which flows downwardly into the melt pool and partially melting the remaining portion of the solids reducing their size sufficiently to pass through the support grid openings into the melt pool. The apparatus and process of this invention provides improved melt quality with stable temperature and high homegeneity with increased specific production rate and increased unit production rate.
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Andrews Melvyn J.
Institute of Gas Technology
Pauley Douglas H.
Speckman Thomas W.
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