A METHOD FOR PRODUCING A REDUCED CHROMIUM-ORE BEARING POWDER

摘要

PCT No. PCT/JP89/00256 Sec. 371 Date Nov. 13, 1989 Sec. 102(e) Date Nov. 13, 1989 PCT Filed Mar. 9, 1989 PCT Pub. No. WO89/08724 PCT Pub. Date Sep. 21, 1989.A reduced chromium-ore bearing powder used for production of a chromium-containing steel in a converter, is produced by a reduction of chromium ore-powder having a particle-diameter of 3 mm or less by a carbonaceous reducing agent having a particle diameter of 3 mm or less in an inert-gas atmosphere, while the chromium-ore powder and carbonaceous reducing agent are stirred and mixed with each other in the reaction chamber (5). The reduced chromium-ore powder has 3 mm or less of particle diameter. Acid-soluble chromium is in an amount of 85% or more of the total chromium, and acid-soluble iron is in an amount of 95% or more of the total iron.