US PATENT SUBCLASS 75 / 514-- .~.~.~.~.~.~ With treating of molten Iron(Fe) with gas outside reverberatory furnace (e.g., in Bessemer converter, etc.)

US PATENT SUBCLASS 75 / 514
.~.~.~.~.~.~ With treating of molten Iron(Fe) with gas outside reverberatory furnace (e.g., in Bessemer converter, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999 Terms of Use

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}
513	DF	.~.~.~.~.~ In reverberatory furnace (e.g., open-hearth, Siemens-Martin, puddling, etc.) {9}
514		.~.~.~.~.~.~ With treating of molten Iron(Fe) with gas outside reverberatory furnace (e.g., in Bessemer converter, etc.)

DEFINITION

Classification: 75/514

With treating of molten Iron (Fe) with gas outside reverberatory furnace (e.g., in Bessemer converter, etc.):

(under subclass 513) Process including a step wherein a gas is injected into, onto, or through molten metal that contains over 50 percent by weight Iron (Fe) or a slag layer thereon while the molten metal is outside the reverberatory furnace. This step may take place prior to or subsequently to treatment of the metal in a reverberatory furnace.

(1) Note. Commonly, patents in this subclass employ a combination of treatment in an open hearth furnace with treatment in a Bessemer converter.