Process for beneficiation of mixtures of mineral particles
Patent 6200377 Issued on March 13, 2001. Estimated Expiration Date: 
April 16, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 16, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2660303 2990958 3371988 3438494 3450257 3701417 3837482 3862027 Flotation of fine-grained materials Substantially non-aqueous low foaming liquid non-ionic detergent composition InventorsAssigneeApplicationNo. 293298 filed on 04/16/1999US Classes:106/486, Clay or material derived therefrom containing106/436, Titanium compound containing (Ti)106/447, Organic material containing106/487, Organic material containing209/3, PRECEDENT PREPARATION OF ITEMS OR MATERIALS TO FACILITATE SEPARATION209/5, Deflocculation and flocculation209/166, With modifying agents210/723, Utilizing precipitant, flocculant, or coagulant, each with accelerator or with each other or plural precipitants, flocculants, or coagulants252/61, Froth-flotation or differential adherence423/21.1, Rare earth metal (At. No. 21, 39, or 57-71)423/23, Group IB metal (Cu, Ag, or Au)423/26, Flotation423/49, Group VIIB metal (Mn, Tc, or Re)423/62, Group VB metal (V, Nb, or Ta)423/69, Group IVB metal (Ti, Zr, or Hf)423/89, Group IVA metal (Ge, Sn, or Pb)423/138, Iron group metal (Fe, Co, or Ni)423/153, Desulfurizing501/148Using organic substance as treating agentExaminersPrimary: Marcheschi, MichaelAttorney, Agent or FirmInternational ClassesC09C 001/00C09C 001/42 B03B 001/00 AbstractAn improved process for the beneficiation of mixtures of mineral particles (such as kaolin clays) containing minerals which chelate with hydroxamates. The use of a silicon-containing compound in combination with a hydroxamate results in a more effective separation of minerals which chelate with the hydroxamate.Other References
Field of SearchPHYSICAL SEPARATION AGENTSFroth-flotation or differential adherence Utilizing precipitant, flocculant, or coagulant, each with accelerator or with each other or plural precipitants, flocculants, or coagulants Deflocculation and flocculation PRECEDENT PREPARATION OF ITEMS OR MATERIALS TO FACILITATE SEPARATION With modifying agents Preferential Clay pretreatment Using organic substance as treating agent Clay containing or derived therefrom Titanium compound containing (Ti) Organic material containing Iron compound containing (Fe) Organic material containing Alkaline earth metal compound containing, other than glass, e.g., ettringite, gypsum, barium sulfate, anhydrite, etc. Organic material containing Cobalt, nickel, or copper compound containing (Co, Ni, or Cu) Clay or material derived therefrom containing Organic material containing Rare earth metal (At. No. 21, 39, or 57-71) Group IB metal (Cu, Ag, or Au) Flotation Group VIIB metal (Mn, Tc, or Re) Group VB metal (V, Nb, or Ta) Group IVB metal (Ti, Zr, or Hf) Iron group metal (Fe, Co, or Ni) Alkaline earth metal (Mg, Ca, Sr, or Ba) RARE EARTH COMPOUND (AT. NO. 21, 39, OR 57-71) Group IVA metal (Ge, Sn, or Pb) |
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