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    • 6. 发明申请
    • ORE REDUCTION PROCESS USING CARBON BASED MATERIALS HAVING A LOW SULFUR CONTENT AND TITANIUM OXIDE AND IRON METALLIZATION PRODUCT THEREFROM
    • 使用具有低硫含量和氧化钛的碳基材料的ORE还原过程和铁的金属化产物
    • WO2009052066A1
    • 2009-04-23
    • PCT/US2008/079761
    • 2008-10-14
    • E. I. DU PONT DE NEMOURS AND COMPANYBARNES, John, JamesLYKE, Stephen, ErwinNGUYEN, DatSHEKIRO JR, Joseph, M.LIU, Guangliang
    • BARNES, John, JamesLYKE, Stephen, ErwinNGUYEN, DatSHEKIRO JR, Joseph, M.LIU, Guangliang
    • C21B13/00C21B13/10
    • C21B13/105C21B13/0046C21B13/006
    • The disclosure is directed to a process for producing separable iron and titanium oxides from an ore comprising titanium oxide and iron oxide, comprising: (a) forming agglomerates comprising carbon-based material and the ore, the quantity of carbon of the agglomerates being at least sufficient for forming a ferrous oxide-containing molten slag, at an elevated temperature; (b) introducing the agglomerates onto a bed of carbon-based material in a moving hearth furnace, wherein the carbon-based materials used for both the agglomerates and the bed have a low sulfur content; (c) heating the agglomerates in the moving hearth furnace to a temperature sufficient for liquefying the agglomerates to produce a liquid comprising ferrous oxide-containing slag; (d) metallizing the ferrous oxide of the 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 liquid state; (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.
    • 本公开涉及从包含氧化钛和氧化铁的矿石制备可分离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,所述附聚物的碳量至少为 足以在升高的温度下形成含氧化亚铁的熔渣; (b)在移动的炉床炉中将附聚物引入到碳基材料床上,其中用于凝聚物和床的碳基材料具有低的硫含量; (c)将移动的炉床炉中的附聚物加热到足以使附聚物液化以产生包含含氧化亚铁的炉渣的液体的温度; (d)在炉渣温度足以使炉渣处于液态的情况下,通过氧化亚氮和碳床的碳的反应使炉渣的氧化亚金属化; (e)在氧化亚铁金属化之后固化炉渣,以形成富含氧化钛的炉渣的基体,其具有分布在其上的多个金属铁颗粒; 和(f)从矿渣中分离金属铁颗粒,在分离金属铁之后,炉渣基于基体的整个重量,含有大于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。