发明名称 |
Process for treatment of lateritic ores |
摘要 |
Recovery, by thermal upgrading, of nickel values from nickeliferous lateritic ores containing a silicate fraction is improved by forming agglomerates of the ore, a reagent containing at least one member selected from the group consisting of alkali or alkaline earth metal compounds in a small but effective amount to increase nickel recovery from the silicate fraction and a liquid hydrocarbon in an amount between about 1 and 12%, based on the weight of the ore and heating a static, shallow bed of the agglomerates established on a moving bed to partially melt the agglomerates to reduce and coalesce the nickel values into easily recoverable ferronickel concentrate. The grade of the ferronickel concentrate can be increased by incorporating a sulfur-bearing material in the agglomerates.
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申请公布号 |
US4049444(A) |
申请公布日期 |
1977.09.20 |
申请号 |
US19740510549 |
申请日期 |
1974.09.30 |
申请人 |
THE INTERNATIONAL NICKEL COMPANY, INC. |
发明人 |
BELL, MALCOLM CHARLES EVERT;SRIDHAR, RAMAMRITHAM |
分类号 |
C22B23/02;C22C33/04;(IPC1-7):C22B23/00 |
主分类号 |
C22B23/02 |
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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