Patent ID: 7004992

Claim:
A manufacturing method of a chromium-containing metal, comprising the steps of: reducing a chromium oxide with silicon by heating and melting, in an arc melting furnace, the chromium oxide with sufficient silicon to obtain a primary slag and a molten metal containing at least 85 mass % chromium and more than 0.2 mass % and less than 1.0 mass % silicon; then, discharging the primary slag from the arc melting furnace; adding, after discharge of the primary slag, a basic flux into the arc melting furnace to melt the basic flux by electric arc to obtain a secondary slag; refining the molten metal containing at least 85 mass % chromium and silicon by contacting the secondary slag with said molten metal to form a refined molten metal with a silicon content which is reduced to below 0.1 mass %; and then, tapping the refined molten metal from the arc melting furnace and casting the refined molten metal to form cast chromium-containing metal.