公开(公告)号：US4248623A

公开(公告)日：1981-02-03

申请号：US18977

申请日：1979-03-09

申请人： Gero Papst ,  Gunther Ropke ,  Hans J. Topfer, deceased

发明人： Gero Papst ,  Gunther Ropke ,  Hans J. Topfer, deceased

IPC分类号： C21B13/02 ,  F27B1/08 ,  F27B1/16

CPC分类号： C21B13/02 ,  C21B2100/02 ,  C21B2100/04 ,  Y02P10/136 ,  Y02P10/143

摘要： A process for the direct reduction of iron ore in a shaft furnace having an upper reducing zone and a lower cooling zone in which reducing gas is introduced to the furnace at the bottom of the reducing zone around the periphery of the furnace, exhausted reducing gas or top gas is removed from the top of the furnace, cleaned, mixed with additional hydrocarbons, and reinjected into the furnace below the reducing zone. The hot reducing gas is injected serially into different sectors of the cross-section of the furnace and at varying velocities to force upflowing cleaned top gas to change its flow path or its flow rate, or both, periodically. Apparatus for accomplishing the method is also disclosed.

摘要翻译： 一种用于在具有上部还原区和下部冷却区的竖炉中直接还原铁矿石的方法，其中还原气体在炉周围的还原区的底部被引入到炉中，排出的还原气体或 将顶部气体从炉顶部除去，清洁，与另外的烃混合，并且重新注入到还原区下方的炉中。 热还原气体连续注入到炉的横截面的不同部分中，并以不同的速度喷射，以迫使向上流动的清洁的顶部气体周期性地改变其流动路径或其流速，或者两者。 还公开了用于实现该方法的装置。