US PATENT SUBCLASS 75 / 439
.~.~.~.~.~ Pouring molten Iron(Fe) into molten slag (i.e., Aston process)

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}
438  DF  .~.~.~.~ Making wrought Iron(Fe) {3}
439.~.~.~.~.~ Pouring molten Iron(Fe) into molten slag (i.e., Aston process)

DEFINITION

Classification: 75/439

Pouring molten Iron (Fe) into molten slag (i.e., aston

process):

(under subclass 438) Process wherein molten low Carbon (C) Iron (Fe) is poured into molten slag. The Iron becomes intimately mixed with the slag and then settles, carrying with it some slag. Liquid slag is poured off and the pasty Iron-slag mixture is worked to yield wrought Iron.