Richard T Um

age ~88

from Tucson, AZ

Also known as:
  • Richrd T Um
  • Dick T Um
  • Richard T Uh
  • Rick Um
Phone and address:
123 Chelsea Ct, Tucson, AZ 85704
5205750581

Richard Um Phones & Addresses

  • 123 Chelsea Ct, Tucson, AZ 85704 • 5205750581
  • Oro Valley, AZ

Emails

Us Patents

  • Production Of Metallic Lead

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  • US Patent:
    41244575, Nov 7, 1978
  • Filed:
    Sep 16, 1977
  • Appl. No.:
    5/833847
  • Inventors:
    John C. Stauter - Streamwood IL
    Richard T. Um - Tucson AZ
  • Assignee:
    UOP Inc. - Des Plaines IL
  • International Classification:
    C25C 334
  • US Classification:
    204 66
  • Abstract:
    Metallic lead is obtained from lead sulfide ores or concentrates by subjecting the concentrate to a drying step followed by halogenating the dried concentrate in a dry atmosphere at a temperature in the range of 90. degree. to about 120. degree. C. Thereafter the halogenated mixture is subjected to a water wash and leached with a brine solution. The brine solution is then filtered to separate elemental sulfur and residue from the solubilized lead halide, the latter being then crystallized and subjected to fused salt electrolysis to recover metallic lead.
  • Recovery Of Cobalt Values

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  • US Patent:
    42617375, Apr 14, 1981
  • Filed:
    Oct 31, 1979
  • Appl. No.:
    6/089837
  • Inventors:
    James A. Bradbury - Tucson AZ
    Richard T. Um - Tucson AZ
  • Assignee:
    UOP Inc. - Des Plaines IL
  • International Classification:
    C22B 2304
  • US Classification:
    75101BE
  • Abstract:
    The present process involves an improvement in the hydrometallurgical recovery of metal values from metal bearing sources such as ores and the like. The desired metal values are recovered by subjecting a metal bearing source to a reductive roast in a reducing atmosphere after having treated said source with at least one additive. Following the reductive roast the reduced metal bearing source is cooled and extracted by a leaching operation. The separation of various metal values in the metal bearing source may be effected by adding a solid adsorbent to the leach solution whereby selective metal ions are adsorbed thereon. The improvement in the present process comprises pretreating the solid adsorbent prior to use thereof with an acid thereby increasing the loading capacity of the metal ions in the adsorbents as well as kinetics of metal adsorption.

Classmates

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Richard Um

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Schools:
Bellevue Community College-High School Program Bellevue WA 1989-1993

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Myspace

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Locality:
Tigard, OREGON
Gender:
Male
Birthday:
1945
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Richard Um

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Locality:
CHINO HILLS, CALIFORNIA
Gender:
Male
Birthday:
1947
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Richard Um

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Locality:
SAN RAMON, California
Gender:
Male
Birthday:
1943
Richard Um Photo 9

Richard Um

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Locality:
New York
Gender:
Male
Birthday:
1947

Youtube

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Richard Dolan: Controlled Disclosure - The UF...

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Richard Wolff & Lee Camp: The Rise of The Mul...

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Goma At Home: Lobster Paella By The Beach

Today's episode is special for several reasons. First, it's Christmas ...

  • Duration:
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Googleplus

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Richard Um

Education:
California High School

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