Patent 2010229809

Process for recovering metals from coal liquefaction residue containing spent catalysts

Abstract

In one embodiment, this invention is directed to a method of recovering metals from a metals bearing material comprising: reducing the particle size of at least a portion of the metals bearing material; mixing the metals bearing material in an acid solution to form a first slurry containing at least alkaline earth metal compounds; separating the at least alkaline earth metal compounds from the first slurry to form a first filtrate and a metals bearing material; leaching metals from the metals bearing material to form a pressure leach solution containing transition metals; precipitating and recovering transition metals from the pressure leach solution. In another aspect, the invention relates to a method for recovering metals from a deoiled and dried coal liquefaction residue that contains spent catalyst originating from a Group VIB metal sulfide catalyst.

Information

Australian application number
2010229809
Country
US
Status
Ceased
Type
Standard
Applicant
Chevron U.S.A. Inc., INC (US)
Application year
2011

International Patent Classification (IPC) codes