Compacted carbonaceous shapes and process for making the same
AssigneeInland Steel Company
InventorsWilliam Du Broff, George H. Craig, Timothy A. Veslocki
Life of this patent
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Abstract
Compacted carbonaceous shapes are produced by mixing a particulate carbonaceous material with a binder, forming green shapes from the mixture, and heating the green shapes by induction heating or microwave heating or a combination thereof. The process is particularly adapted for making formcoke.
Claims16
A process for producing compacted carbonaceous shapes comprising the steps of mixing a particulate carbonaceous material with a volatilizable organic binder, said particulate carbonaceous material comprising a calcined char obtained by carbonizing pulverized coal to remove volatile matter and calcining the resultant char, forming the mixture into preformed green shapes, heating said green shapes initially by induction heating at a relatively lower frequency so as to effect substantially uniform heating throughout said shapes, and thereafter heating said shapes by induction heating at a relatively higher frequency sufficient to effect increased heating at the surfaces of said shapes whereby to effect surface graphitization of said shapes.
A process for producing compacted carbonaceous shapes comprising the steps of mixing a particulate carbonaceous material with a volatilizable organic binder, said particulate carbonaceous material comprising a calcined char obtained by carbonizing pulverized coal to remove volatile matter and calcining the resultant char, forming the mixture into preformed green shapes, heating said green shapes initially by microwave heating to remove the binder and other volatilizable components until an adequate electrical conductivity is obtained to permit induction heating of said green shapes, and thereafter heating said green shapes by induction heating.
Dependencies are inferred from the claim text.