公开(公告)号：US5092564A

公开(公告)日：1992-03-03

申请号：US556265

申请日：1990-07-20

Applicant: Toralv Basen ,  Robin Ephithite

Inventor： Toralv Basen ,  Robin Ephithite

IPC: C22B5/12 ,  C22B34/32

CPC classification number: C22B34/32 ,  C22B5/12

Abstract: The present invention relates to a method for production of metals and/or ferro alloys by prereduction of particulate metal oxide co-current with a reducing gas. Reducing gas having a temperature between 650.degree. and 1100.degree. C. and metal oxide particles are supplied at the lower end of a substantially vertical prereduction column which comprises at least two chambers having a substantially circular cross-section, said chambers in their upper and lower ends having a decreasing cross-section and where a ringshaped member for decreasing the cross-section is arranged in the intermediate zone between the chambers. The mixture of reducing gas and prereduced metal oxide particles is collected at the top of the prereduction column, whereafter the prereduced metal oxide particles are transported to a smelting furnace for smelting and final reduction to metallix state by addition of a reduction material.The present invention also relates to a column for treatment of particulate solid materials with a gas. The column comprises at least two chambers having a substantially circular cross-section. The chambers have in their upper and lower ends a dreasing cross-section, and a ringshaped member is arranged at least in the intermediate zone between each chamber for decreasing the cross-section in the intermediate zone.

公开(公告)号：US4975116A

公开(公告)日：1990-12-04

申请号：US339687

申请日：1989-04-18

Applicant: Toralv Basen ,  Robin Ephithite

Inventor： Toralv Basen ,  Robin Ephithite

IPC: C22B5/12 ,  C22B34/32

CPC classification number: C22B34/32 ,  C22B5/12

Abstract: The present invention relates to a method for production of metals and/or ferro alloys by prereduction of particulate metal oxide co-current with a reducing gas. Reducing gas having a temperature between 650.degree. and 1100.degree. C. and metal oxide particles are supplied at the lower end of a substantially vertical prereduction column which comprises at least two chamber having a substantially circular cross-section, said chambers in their upper and lower ends having a decreasing cross-section and where a ringshaped member for decreasing the cross-section is arranged in the intermediate zone between the chambers. The mixture of reducing gas and prereduced metal oxide particles is collected at the top of the prereduction column, whereafter the prereduced metal oxide particles are transported to a smelting furnace for smelting and final reduction to metallic state by addition of a reduction material.The present invention also relates to a column for treatment of particulate solid materials with a gas. The column comprises at least two chambers having a substantially circular cross-section. The chambers have in their upper and lower ends a decreasing cross-section, and a ringshaped member is arranged at least in the intermediate zone between each chamber for decreasing the cross-section in the intermediate zone.

Abstract translation: 本发明涉及通过与还原气体预还原颗粒状金属氧化物并流来生产金属和/或铁合金的方法。 温度在650℃到1100℃之间的还原气体和金属氧化物颗粒在基本上垂直的预还原塔的下端处供应，其包括至少两个具有基本圆形横截面的室，所述室在其上部和下部 具有减小横截面的端部，并且其中用于减小横截面的环形构件布置在室之间的中间区域中。 将还原气体和预还原金属氧化物颗粒的混合物收集在预还原塔的顶部，然后通过添加还原材料将预还原的金属氧化物颗粒输送到熔炼炉中进行熔炼和最终还原成金属状态。 本发明还涉及一种用气体处理颗粒状固体材料的柱。 该柱包括具有基本圆形横截面的至少两个室。 这些腔室的上端和下端具有减小的横截面，并且环形构件至少设置在每个室之间的中间区域中，以减小中间区域中的横截面。