US PATENT SUBCLASS 423 / 140
.~.~ Forming insoluble substance in liquid

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}
138  DF  .~ Iron group metal (Fe, Co, or Ni) {7}
140.~.~ Forming insoluble substance in liquid {4}
141  DF  .~.~.~> Subjecting mixture to pressure, vacuum, or steam
142  DF  .~.~.~> Agitating during reaction
143  DF  .~.~.~> Utilizing or forming nitrogenous compound {2}
146  DF  .~.~.~> Sulfating {1}

DEFINITION

Classification: 423/140

(under subclass 138) Processes wherein a liquid or a slurry is treated to form a substance which is insoluble therein and comes out of solution, or wherein the composition of the liquid is changed so that one part of the mixture becomes insoluble therein, so the insoluble substance can be separated from the liquid and the materials which remain soluble in the liquid.

(1) Note. Crystallization of a substance is included under this definition of insolubilization.