Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Reexamination Certificate
2004-12-21
2009-02-17
Bos, Steven (Department: 1793)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
C423S027000, C423S028000, C423S038000, C423S039000, C423S040000, C423S041000, C423S042000, C423S045000, C423S046000, C423S047000
Reexamination Certificate
active
07491372
ABSTRACT:
A chemical process to leach copper concentrates in the presence of a concentrated solution of sulfates and chlorides. The process includes forming a high reactivity chemical paste containing a high concentration of ions in the liquid phase of the paste which react with copper ores and forms a series of soluble salts. The salts are extracted by a simple wash. Mixing equipment for handling high viscosity liquids is used. The total mixing time is about 5 minutes, after which the paste is poured into a rectangular mold, of several hundred meters per side, and is left to settle and breathe. During settling, water and sulfuric acid are added at intervals to replace that consumed by the reactions taking place during the aeration, until the reactions have virtually end. This treatment results in a dry, very resistant mass, containing the copper extracted in form of chlorine salts, and sulfate.
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Alfaro Freddy Aroca
Faine Jamie Rauld
Gutierrez Abraham Backit
Jullian Raúl Montealegre
Bos Steven
Hochberg D. Peter
Mellino Sean F.
Minera Michilla S.A.
Smola Daniel J.
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