US PATENT SUBCLASS 75 / 524
.~.~.~.~.~ Sequential treatment of molten Iron(Fe) in plural apparatus with different linings (e.g., acid Bessemer followed by basic Bessemer, 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}
524.~.~.~.~.~ Sequential treatment of molten Iron(Fe) in plural apparatus with different linings (e.g., acid Bessemer followed by basic Bessemer, etc.)

DEFINITION

Classification: 75/524

Sequential treatment of molten Iron (Fe) in plural apparatus with different linings (e.g., acid Bessemer followed by basic Bessemer, etc.):

(under subclass 507) Process wherein premelted metal that contains over 50 percent by weight Iron (Fe) is treated in one apparatus and then transferred to another apparatus and treated wherein there is an intentional, claimed difference in the linings between the different apparatus.

(1) Note. Any recited intentional difference will be enough to render the linings different (e.g., one lining "acidic" and the other "basic", etc.).