发明名称 |
ORE REDUCTION PROCESS AND TITANIUM OXIDE AND IRON METALLIZATION PRODUCT |
摘要 |
<p>The disclosure is directed to a process for producing separable iron and titanium oxides from an ore containing titanium oxide and ferric oxide, comprising: (a) forming agglomerates comprising carbon-based materials and the ore, the quantity of carbon of the agglomerates being sufficient for, at an elevated temperature, reducing ferric oxide to ferrous oxide and forming a ferrous oxide-rich molten slag, (b) introducing the agglomerates onto a carbon bed of a moving hearth furnace; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for reducing and melting the agglomerates to produce a ferrous oxide-rich molten slag; (d) metallizing the ferrous oxide of the molten slag by reaction of the ferrous oxide and the carbon of the carbon bed at a furnace temperature sufficient for maintaining the slag in a molten state; and (e) solidifying the slag after metallization of the ferrous oxide to form a matrix of titanium oxide-rich slag having a plurality of metallic iron granules distributed there through; and (f) separating the metallic iron granules from the slag, the slag comprising greater than 85% titanium dioxide based on the entire weight of the matrix after separation of the metallic iron. The disclosure is also directed to a metallization product of a ferrous oxide-rich molten slag.</p> |
申请公布号 |
EP1929051(B1) |
申请公布日期 |
2010.12.15 |
申请号 |
EP20060814061 |
申请日期 |
2006.08.30 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
BARNES, JOHN, JAMES;LYKE, STEPHEN, ERWIN;NGUYEN, DAT;URAGAMI, AKIRA;KOBAYASHI, ISAO;HINO, MITSUTAKA |
分类号 |
C21B3/04;C21B11/08 |
主分类号 |
C21B3/04 |
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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