公开(公告)号：EP1929051A2

公开(公告)日：2008-06-11

申请号：EP06814061.5

申请日：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

IPC分类号： C21B3/04 ,  C21B11/08

CPC分类号： C21B13/105 ,  C21B3/04 ,  C21B13/0046 ,  C21B13/006 ,  Y02W30/542 ,  Y10T428/12056

摘要： 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.

摘要翻译： 本发明涉及由含有氧化钛和氧化铁的矿石生产可分离的铁和钛氧化物的方法，其包括：（a）形成包含碳基材料和矿石的附聚物，附聚物的碳量足以 在升高的温度下，将氧化铁还原成氧化亚铁并形成富含氧化亚铁的熔渣，（b）将所述团聚物引入到移动的炉底炉的碳床上; （c）将移动的炉底炉中的团块加热至足以使团块还原和熔融的温度，以产生富含氧化亚铁的熔融炉渣; （d）通过氧化亚铁与碳床的碳在足以维持炉渣处于熔融状态的炉温下反应熔融炉渣的氧化亚铁; （e）在氧化亚铁金属化后形成富含氧化钛的熔渣基质，所述氧化钛富含熔渣基质具有多个分布在其中的金属铁颗粒; 和（f）从金属铁中分离出金属铁颗粒，分离出金属铁后，该金属铁颗粒占基体总重量的大于85％的二氧化钛。 本公开还涉及富含氧化亚铁的熔渣的金属化产物。

公开(公告)号：EP1929051B1

公开(公告)日：2010-12-15

申请号：EP06814061.5

申请日：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

IPC分类号： C21B3/04 ,  C21B11/08

CPC分类号： C21B13/105 ,  C21B3/04 ,  C21B13/0046 ,  C21B13/006 ,  Y02W30/542 ,  Y10T428/12056

摘要： 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.