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41. 发明申请

WO1998004751A1 A PROCESS FOR THE DIRECT PRODUCTION OF CAST IRON FROM IRON BEARING ORE, AND AN APPARATUS SUITABLE TO CARRY OUT SAID PROCESS 审中-公开
标题翻译：铁矿石直接生产铸铁的工艺及适用于实施工艺的设备
公开(公告)号：WO1998004751A1
公开(公告)日：1998-02-05
申请号：PCT/IT1997000198
申请日：1997-07-31
申请人： CENTRO SVILUPPO MATERIALI S.P.A. , DE CESARE, Alessandro , MALGARINI, Giansilvio , GRANATI, Paolo , FEDERICO, Giuseppe
发明人： CENTRO SVILUPPO MATERIALI S.P.A.
IPC分类号： C21C05/56
CPC分类号： C21B13/0026 , C21B13/14 , C21B2100/66 , C21C5/567 , Y02P10/136
摘要： A process is described for direct production of cast iron starting from iron bearing ore in an apparatus having two communicating chambers in which to carry out the process, comprising the following operations: pre-reduction and pre-heating to founding point of the iron bearing ore in a first substantially cylindrical chamber; final reduction, carburization and founding of the resulting iron in a second chamber arranged below said first chamber, in which coal and oxygen, injected into said second chamber, provide the reducing gas both in said second and in said first chamber, characterized by the fact that: said iron bearing ore and oxygen are introduced into said first chamber through the side walls thereof, simultaneously but separately, the oxygen being introduced at a speed lower or equal to the speed of introduction of said iron bearing ore; and said oxygen, coal and flux are introduced into said second chamber simultaneously but separately through the side walls thereof and in a manner inclined downwards and towards the centre of said second chamber.
摘要翻译：描述了一种用于在具有两个连通室的装置中从含铁矿石直接生产铸铁的方法，其中执行该方法，包括以下操作：预还原和预加热到铁轴承矿石的起点在第一大致圆柱形的腔室中; 在所述第一室中布置的第二室中的最终还原，渗碳和形成，其中注入到所述第二室中的煤和氧在所述第二室和所述第一室中提供还原气体，其特征在于，所述含铁矿石和氧通过其侧壁同时引入所述第一室，但是分开地以低于或等于所述含铁矿石的引入速度的速度引入氧气; 并且所述氧气，煤和助熔剂同时被引入所述第二室中，但是分开地通过其侧壁并且以向下倾斜并朝向所述第二室的中心的方式引入。

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