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Robert Au Phones & Addresses

  • 4 Birdseye Cir, Stony Brook, NY 11790 (646) 240-1039
  • Torrance, CA
  • Tustin, CA
  • s
  • 1822 S Garfield Ave, Monterey Park, CA 91754
  • 300 59Th St, New York, NY 10022
  • Rosemead, CA
  • Diamond Bar, CA
  • Huntington Beach, CA

Resumes

Resumes

Robert Au Photo 1

Lighting Supervisor At Rhythm & Hues

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Location:
Greater Los Angeles Area
Industry:
Motion Pictures and Film
Robert Au Photo 2

Group Finance Mgr - Na Salon Professional At Procter And Gamble

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Location:
Greater Los Angeles Area
Industry:
Consumer Goods

Publications

Us Patents

Chlorination Leaching With Sulfur Extraction For Recovery Of Zinc Values

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US Patent:
43460623, Aug 24, 1982
Filed:
Feb 13, 1981
Appl. No.:
6/234128
Inventors:
Robert W. Au - Mission Viejo CA
Assignee:
Occidental Research Corporation - Irvine CA
International Classification:
C25C 116
C22B 1922
C01G 904
C01B 1706
US Classification:
423109
Abstract:
A process is disclosed for recovering zinc from a material containing zinc sulfide. The zinc sulfide-containing material is chlorinated in an aqueous medium to form zinc chloride and elemental sulfur. A water-immiscible solvent (preferably inert) for the sulfur is added to the aqueous chlorinating solution during the chlorination process. The aqueous solution which contains zinc values is separated from the water-immiscible solvent containing sulfur. The zinc values can be recovered from the aqueous layer.

Zinc Recovery By Chlorination Leach

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US Patent:
42060230, Jun 3, 1980
Filed:
May 12, 1978
Appl. No.:
5/905128
Inventors:
Robert W. Au - Diamond Bar CA
Assignee:
Occidental Research Corporation - La Verne CA
International Classification:
C25C 116
C22B 1922
C01G 904
US Classification:
204118JM
Abstract:
A process is disclosed for the separation and recovery of zinc from material in which it is contained as a sulfide. Zinc sulfide containing material is chlorinated in an aqueous medium in the presence of elemental chlorine and ferric/ferrous ions to form a solution containing zinc chloride, iron chloride and elemental sulfur. The solution is treated with elemental chlorine and alkali to precipitate the iron (e. g. at about pH 3 to 4). Zinc chloride is recovered from the solution by means known to those skilled in the art such as by electrolysis. The precipitated iron is recycled for use as a secondary chlorinating solution to treat the solid residue of the initial chlorination leaching step.
Robert W Au from Stony Brook, NY, age ~81 Get Report