Gale L. Hubred

Low-sulfur reforming process

Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum and vanadium and sequential extraction of nickel and cobalt

Recovering metals from spent hydroprocessing catalysts

Leaching cobalt from spent hydroprocessing catalysts with sulfur dioxide

Apparatus for hydrocarbon processing

Leaching nickel, cobalt, molybdenum, tungsten, and vanadium from spent hydroprocessing catalysts

Recovery of cobalt, molybdenum, nickel and vanadium from an aqueous ammonia and ammonium salt solution by precipitating vanadium and subsequent serial ion exchange

Pressurized, sparged flotation column

Selective electrowinning of palladium

Extraction and stripping cobalt values