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公开(公告)号：EP0508166A2
公开(公告)日：1992-10-14
申请号：EP92104620.7
申请日：1992-03-17
CPC分类号： C21B13/08 , C21B13/0046 , C21B13/105 , C22B1/24 , C22B7/02 , C22B7/04 , Y02P10/216 , Y10S75/961
摘要： The invented pellet reclamation process includes forming green pellets of a mixture of steel furnace dust, a carbonaceous material such as coal, charcoal, lignite, petroleum coke, or coke, and an organic binder. The green pellets are fed over a layer of burnt pellets on a rotary hearth furnace which successively conveys the pellets first through a drying and coking zone in which the pellets are dried and any volatile matter driven out of the carbonaceous material. The pellets then travel through a reduction zone where the pellets are subjected to a higher temperature at which the contained iron oxide is reduced and remains within the pellets and the zinc, lead and cadmium oxides are reduced, volatilized, re-oxidized and carried off as oxides in the waste gases. The reduced pellets (DRI) are ultimately carried into a discharge zone where they are discharged from the rotary hearth furnace. An apparatus for performing the process is also disclosed.
摘要翻译： 本发明的颗粒回收方法包括形成钢炉尘，碳质材料如煤，炭，褐煤，石油焦炭或焦炭和有机粘合剂的混合物的生球团矿。 将生坯颗粒在转底炉上的一层烧焦颗粒上进料，其先后连续地将颗粒通过干燥和焦化区域输送，其中颗粒被干燥，以及从碳质材料中驱出的任何挥发物质。 然后，颗粒行进通过还原区，其中颗粒经受更高的温度，在该温度下所含的氧化铁被还原并保留在颗粒内，锌，铅和镉氧化物被还原，挥发，再氧化并作为 废气中的氧化物。 减少的颗粒（DRI）最终被运送到排放区域，在那里它们从旋转炉床炉排出。 还公开了一种用于执行该处理的装置。
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公开(公告)号：EP0508166B1
公开(公告)日：2003-08-27
申请号：EP92104620.7
申请日：1992-03-17
CPC分类号： C21B13/08 , C21B13/0046 , C21B13/105 , C22B1/24 , C22B7/02 , C22B7/04 , Y02P10/216 , Y10S75/961
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公开(公告)号：EP0508166A3
公开(公告)日：1994-02-23
申请号：EP92104620.7
申请日：1992-03-17
CPC分类号： C21B13/08 , C21B13/0046 , C21B13/105 , C22B1/24 , C22B7/02 , C22B7/04 , Y02P10/216 , Y10S75/961
摘要： The invented pellet reclamation process includes forming green pellets of a mixture of steel furnace dust, a carbonaceous material such as coal, charcoal, lignite, petroleum coke, or coke, and an organic binder. The green pellets are fed over a layer of burnt pellets on a rotary hearth furnace which successively conveys the pellets first through a drying and coking zone in which the pellets are dried and any volatile matter driven out of the carbonaceous material. The pellets then travel through a reduction zone where the pellets are subjected to a higher temperature at which the contained iron oxide is reduced and remains within the pellets and the zinc, lead and cadmium oxides are reduced, volatilized, re-oxidized and carried off as oxides in the waste gases. The reduced pellets (DRI) are ultimately carried into a discharge zone where they are discharged from the rotary hearth furnace. An apparatus for performing the process is also disclosed.
摘要翻译： 本发明的球团回收方法包括形成钢铁炉渣粉尘，碳质材料如煤，木炭，褐煤，石油焦炭或焦炭和有机粘合剂的混合物的生球团。 将生粒料在旋转炉床炉上送入一层烧焦的粒料上，将其连续输送至粒料干燥的干燥和焦化区，并从碳质物料中除去任何挥发性物质。 然后颗粒运行通过还原区，在该还原区中颗粒经受较高的温度，在该温度下含有的氧化铁被还原并保留在颗粒内，并且锌，铅和镉氧化物被还原，挥发，再氧化并作为 废气中的氧化物。 还原颗粒（DRI）最终被带入排放区，在那里它们从转底炉中排出。 还公开了用于执行该过程的设备。
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