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 .mu.M 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 |
CA2629874(A1) |
申请公布日期 |
2007.05.24 |
申请号 |
CA20062629874 |
申请日期 |
2006.11.02 |
申请人 |
PITTSBURGH MINERAL & ENVIRONMENTAL TECHNOLOGY, INC. |
发明人 |
WEYAND, THOMAS E.;SAWAYDA, MICHAEL E.;NICKELS, DALE L. |
分类号 |
C01G49/08 |
主分类号 |
C01G49/08 |
代理机构 |
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