发明名称 |
METHOD AND SYSTEM FOR PRODUCING METALLIC IRON NUGGETS |
摘要 |
A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425 °C or 1400 °C or 1375 °C results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15. |
申请公布号 |
WO2009105320(A3) |
申请公布日期 |
2009.10.22 |
申请号 |
WO2009US32519 |
申请日期 |
2009.01.30 |
申请人 |
NU-IRON TECHNOLOGY, LLC;IWASAKI, IWAO;ENGLUND, DAVID J.;KIESEL, RICHARD F. |
发明人 |
IWASAKI, IWAO;ENGLUND, DAVID J.;KIESEL, RICHARD F. |
分类号 |
C21B11/08;C21B13/10 |
主分类号 |
C21B11/08 |
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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