发明名称 |
Reduced chromium-ore bearing powder and method for producing the same |
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.
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申请公布号 |
US5035742(A) |
申请公布日期 |
1991.07.30 |
申请号 |
US19890444162 |
申请日期 |
1989.01.13 |
申请人 |
SHOWA DENKO K.K.;SHUNAN DENKO K.K. |
发明人 |
UEMURA, TADASHI;MINAGAWA, TSUTOMU;SAITO, SADAHIRO |
分类号 |
C22B1/00;B22F9/20;C21C5/00;C22B5/10;C22B34/32 |
主分类号 |
C22B1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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