US PATENT SUBCLASS 75 / 748
.~.~ With vaporization of impurity as metal halide

Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

330  DF  PROCESSES {9}
746  DF  .~ Consolidating metalliferous material (e.g., ore, tailings, flue dust, fluxes, etc.) by agglomerating, compacting, or heat treating; preparatory process therefor; or treating consolidated material therefrom {5}
748.~.~ With vaporization of impurity as metal halide

DEFINITION

Classification: 75/748

With vaporization of impurity as metal halide:

(under subclass 746) Process wherein an undesirable component is removed by reacting the ore or metalliferous material with a halogenating agent (e.g., Sodium chloride, Hydrochloric acid, Chlorine, Fluorine, etc.) and the resulting metal halide is vaporized.