发明名称 |
High Purity Magnetite Formation Process and Apparatus, and Product Thereof |
摘要 |
A process of producing magnetite with a high purity of greater than 90% magnetite, more typically greater than 98% magnetite, by reducing powdered hematite into magnetite under maximum temperatures of about 700 to 1300° C. against a counter-current of or concurrent with methane or natural gas in a heating device. The amount of methane used to reduce the hematite may be about 0.18 and 1.8 standard cubic feet of methane per pound of hematite. A product of high purity methane produced from the process is also provided, where the magnetite is below 1 μM in diameter and has a magnetic saturation greater than 90.0 emu/g. Corresponding apparatus using an improved feeder system for powdered hematite is provided.
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申请公布号 |
US2010129264(A1) |
申请公布日期 |
2010.05.27 |
申请号 |
US20100696711 |
申请日期 |
2010.01.29 |
申请人 |
PITTSBURGH IRON OXIDES, LLC |
发明人 |
NICKELS DALE L.;SAWAYDA MICHAEL E.;WEYAND THOMAS E. |
分类号 |
F27B15/00;C01G49/08;F27B7/20;F27B7/34;F27B7/42;F27B19/02 |
主分类号 |
F27B15/00 |
代理机构 |
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代理人 |
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地址 |
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