Lime bearing agent for use in refining of ferrous melt
AssigneeShowa Denko K.K.
InventorsRyoichi Yoshimura, Munetaka Honda, Norio Hirokawa
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Abstract
A slaking property of a lime bearing agent for use in the refining, particularly in the injection refining, of a ferrous melt is essentially eliminated by providing the agent with a special form, i.e. an uncrushed, granular form solidified from molten drops. Hydrogen pick up of the ferrous melt from the refining agent is avoided and an excellent refining effect of the ferrous melt is achieved by the refining agent of the present invention.
Claims6
A lime bearing granular agent for use in refining of a ferrous melt, said agent having a good resistance against slaking, each of the granules having a granular form solidified from molten drops, and consisting essentially of from 15 to 100% of calcium oxide, from 0.1 to 85% of at least one member selected from the group consisting of a calcium fluoride and an aluminum oxide;
- and not exceeding 10% of a magnesium oxide, 10% of a silicon oxide, and 10% of an iron oxide or oxides, said magnesium oxide, silicon oxide and iron oxides being derived from the raw materials of lime bearing refining agents or the refractories of a melting furnace.
Dependencies are inferred from the claim text.