发明名称 |
Method for beneficiating titanium-bearing material containing iron |
摘要 |
A process for beneficiating particulate titanium-bearing ore containing iron oxides is disclosed. The first step of the process entails prereducing the ore to convert about 20-90 percent of the iron oxides in the ore to metallic iron. Next, the prereduced ore is introduced into a mechanical reduction kiln and contacted with HCl and particulate carbonaceous reducing material. The turning and cascading of the materials in the kiln, in the presence of HCl and the reducing material, converts at least some remaining iron oxide in the ore to metallic iron and causes metallic iron to be liberated from the ore grains. Particulate metallic iron having a particle size of at least 50 microns is thereby formed. Finally, the particulate iron is separated from the ore.
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申请公布号 |
US5660805(A) |
申请公布日期 |
1997.08.26 |
申请号 |
US19960592499 |
申请日期 |
1996.01.26 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
REEVES, JAMES WILLIAM;ZANDER, BO HARRY;ERICSON, AAKE SANDOR |
分类号 |
C22B34/12;(IPC1-7):C01G23/02;C22B1/00;C21B15/00 |
主分类号 |
C22B34/12 |
代理机构 |
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地址 |
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