US PATENT SUBCLASS 423 / 30
.~.~.~.~ And pressurizing

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
23  DF  .~ Group IB metal (Cu, Ag, or Au) {10}
27  DF  .~.~ Leaching, washing, or dissolving {6}
29  DF  .~.~.~ With a cyanide compound {2}
30.~.~.~.~ And pressurizing

DEFINITION

Classification: 423/30

(under subclass 29) Processes in which a pressure above atmospheric is employed while the leaching is being effected.

(1) Note. Included under this definition is the use of gas under pressure contacting the mixture either above the surface thereof or as a submerged blast.