公开(公告)号：US20060278041A1

公开(公告)日：2006-12-14

申请号：US10552465

申请日：2004-03-05

申请人： Takao Harada ,  Hidetoshi Tanaka ,  Isao Kobayashi ,  Noriyuki Okuyama ,  Takuo Shigehisa

发明人： Takao Harada ,  Hidetoshi Tanaka ,  Isao Kobayashi ,  Noriyuki Okuyama ,  Takuo Shigehisa

IPC分类号： C21B13/00

CPC分类号： C10L9/02 ,  C21B13/006 ,  C21B13/0066 ,  C21B13/10 ,  C21B13/105 ,  Y02P10/136

摘要： The present invention provides a method for upgrading low-rank coal unsuitable for production of a reduced metal by a conventional carbon composite method to produce an upgraded coal suitable for the carbon composite method. The prevent invention also provides a method for producing a high-quality reduced metal using the upgraded coal as a carbonaceous material to be incorporated. In these methods, coal is first aged by heating in an organic solvent to produce upgraded coal for metallurgy having higher thermal plasticity than that of the coal. Then, a mixture of the upgraded coal for metallurgy and a metal oxide-containing raw material is agglomerated by an agglomerator, and the resultant agglomerates are reduced by heating in a moving hearth furnace and then melted by further heating to produce a reduced melt. The reduced melt is cooled and solidified in the moving hearth furnace to produce a reduced solid, and then the reduced solid is discharged to the outside of the furnace. Then, a slag is removed using a screen to recover a metal as a reduced metal.

摘要翻译： 本发明提供了一种通过常规的碳复合方法提高不适合生产还原金属的低等级煤的方法，以生产适用于碳复合方法的升级煤。 本发明还提供了使用升级煤作为掺入的碳质材料制造高品质还原金属的方法。 在这些方法中，首先通过在有机溶剂中加热来生产煤，以生产具有比煤的热可塑性更高的用于冶金的升级煤。 然后，通过凝聚器将用于冶金的改质煤和含金属氧化物的原料的混合物团聚，并且通过在移动的炉床炉中加热而使所得附聚物减少，然后通过进一步加热熔融以产生还原的熔体。 将还原的熔体在移动的炉床炉中冷却和固化以产生还原的固体，然后将还原的固体排出到炉的外部。 然后，使用筛网去除炉渣以回收作为还原金属的金属。