Iron bearing briquet and method of making
AssigneeMidrex International B.V. Rotterdam, Zurich Branch
InventorsGlenn E. Hoffman, Bradford G. True
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Abstract
A briquet consists essentially of metallized iron fines, formed by direct reduction of iron oxide, granulated or fine silica, a carbon source such as coke breeze, and less than 3.5 percent of other components, or impurities. The briquet product has a density of from 2.0 to 6.0 g/cc, and is particularly well suited for steelmaking operations. The method for making the briquet is also disclosed.
Claims11
An iron-bearing briquet product consisting essentially of from 50% to 88% metallized direct reduced iron fines, which fines are from 60% to 97% metallized, from 7% to 35% silica, from 5% to 15% carbon in solid form, and up to 3.5% impurities.
A method of forming a hot iron-bearing briquet, comprising:
- mixing from 50 to 88% hot metallized iron fines at a temperature of at least 600.degree. C., from 7 to 35% silica, from 5 to 15% carbon, and no more than 3.5 % impurities;
- and
- compacting said mixture at a pressure of at least 1000 psi to form a hot iron-bearing briquet having a density of from 2.0 to 6.0 g/cc.
Dependencies are inferred from the claim text.