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US 12,215,395 B2Granted
Method for recycling chromium oxide and forming chromium-alloy steel
AssigneeSaudi Iron and Steel Company (Hadeed)
InventorsMansour Nasser Alharbi, Sami Muteib Almutairi, Malleswara Rao Tadiboyina
Life of this patent
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Abstract
Disclosed are processes for recycling chromium oxide and producing chromium-alloy steel. Chromium oxide is reduced to metallic chromium and metallic chromium is mixed with steel to form chromium-alloy steel.
Claims20
A process for recycling chromium oxide and forming chromium-alloy steel, the process comprising:
- adding a first composition comprising chromium oxide to a second composition comprising molten steel;
- and
- reducing the chromium oxide at a temperature of 1200 to 2000° C. to form metallic chromium, wherein the metallic chromium gets mixed with the molten steel to form chromium-alloy steel;
- wherein the first composition comprises 10 to 25 wt. % Cr2O3 and 70 to 85 wt. % alumina.
1 more element
Dependencies are inferred from the claim text.