C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/93
C21C 5/30 (2006.01)
Patent
CA 1197985
METHOD OF TREATING FERROUS METAL ABSTRACT OF THE DISCLOSURE A method of treating ferrous metal includes the steps of containing in a metallurgical vessel a quantity of ferrous metal which is at least partially solid in form, entraining finely divided carbon and a fluxing agent in a nonoxidizing gas and injecting the same in a first flow path and from beneath said metal, simultaneously injecting a first quantity of oxygen in a second flow path separate from said first flow path and beneath said metal for oxidizing the carbon to elevate the temperature of said metal. A second quantity of oxygen is injected into the metal in a third flow path and from above the metal for reducing the carbon content thereof. Additional fluxing agents may also be introduced from above the metal. After the desired metal tempera- ture has been achieved, the delivery of carbon and fluxing agents through the first flow path is terminated while the flow of nonoxidizing gas is continued to promote mixing. The delivery of oxygen through the second and third flow paths is continued until the level of carbon in the metal has been reduced to a predeter- mined level.
413252
Bereskin & Parr
Pennsylvania Engineering Corporation
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