150000001339 alkali metal compounds Chemical class 0.000 claims description 8.230000000875 corresponding Effects 0.000 claims description 14.238000010438 heat treatment Methods 0.000 claims description 16.239000010763 heavy fuel oil Substances 0.000 claims description 40.OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 48.239000010881 fly ash Substances 0.000 title claims description 194.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Calvert Robert filed Critical Calvert Robert Priority to US625259A priority Critical patent/US2926137A/en Application granted granted Critical Publication of US2926137A publication Critical patent/US2926137A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US625259A Inventor Calvert Robert Original Assignee Calvert Robert Priority date (The priority date is an assumption and is not a legal conclusion. Google Patents US2926137A - Filter aid from fly ashĭownload PDF Info Publication number US2926137A US2926137A US625259A US62525956A US2926137A US 2926137 A US2926137 A US 2926137A US 625259 A US625259 A US 625259A US 62525956 A US62525956 A US 62525956A US 2926137 A US2926137 A US 2926137A Authority US United States Prior art keywords fly ash flux calcined filter aid product Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

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