Patents by Inventor Eric J. Olin

Eric J. Olin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4366050
    Abstract: A scheelite concentrate is recovered from a scheelite ore containing silicate minerals and other calcareous minerals by froth flotation which process comprises grinding the ore sufficiently fine to liberate the scheelite grains, pulping the gound ore with water to form a slurry containing between about 20% and about 40% solids by weight, sequentially conditioning the slurry with at least one alkali metal carbonate in small but effective amounts to provide an alkaline pH adjustment and a source of carbonate ions, with small but effective amount of alkali metal silicates to depress siliceous and calcareous gangue minerals other than scheelite and with a fatty acid collector in small but effective amounts to coat the scheelite grains, the conditioning with the fatty acid collector being conducted with sufficient agitation to disintegrate floccules of scheelite, silicate mineral and other calcareous mineral grains and to preferentially reflocculate the scheelite grains for a period of time sufficient to produce u
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: December 28, 1982
    Assignee: Amax Inc.
    Inventors: Eric J. Olin, Harry B. Carson, Brian Ball