US PATENT SUBCLASS 75 / 527
.~.~.~.~.~ In rotary kiln (e.g., Kaldo process, etc.)

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}
392  DF  .~ Producing or treating free metal {10}
414  DF  .~.~ At 300 degrees C or greater (e.g., pyrometallurgy, etc.) {7}
433  DF  .~.~.~ Iron(Fe) {18}
507  DF  .~.~.~.~ Melting Iron(Fe) or treating molten Iron {12}
527.~.~.~.~.~ In rotary kiln (e.g., Kaldo process, etc.)

DEFINITION

Classification: 75/527

In rotary kiln (e.g., Kaldo process, etc.):

(under subclass 507) Process wherein a gas or solid treating agent is injected into premelted metal that contains over 50 percent by weight Iron (Fe) or slag thereon and wherein the premelted metal is agitated at any molten process stage by a chamber or converter that rotates 360 degrees.