发明申请
WO01044518A1 METHOD FOR DECREASING ELUTRIATION LOSS OF FINE IRON ORE IN FLUIDIZED BED TYPE REDUCING OPERATION
审中-公开
基本信息:
- 专利标题： METHOD FOR DECREASING ELUTRIATION LOSS OF FINE IRON ORE IN FLUIDIZED BED TYPE REDUCING OPERATION
- 专利标题（中）：减少流化床减少运行中减少铁素体损失的方法
- 申请号：PCT/KR1999/000776 申请日：1999-12-16
- 公开(公告)号：WO01044518A1 公开(公告)日：2001-06-21
- 主分类号： C21B13/00
- IPC分类号： C21B13/00 ; C22B5/14
摘要：
A method for decreasing the elutriation loss of fine iron ore in a circulating fluidized bed type reducing operation is disclosed. The method includes charging lime stone (CaCO3) or dolomite (CaCO3, MgCO3) in an amount of 3-6 vol% together with the fine iron ore into a fluidized bed type furnace. In another embodiment, the method includes the addition of a sludge in an amount of 0.2-5.0 wt% to the fine iron ore and mixing them thus coating the fine iron ore particles; drying the coated particles at a temperature of 105-800 DEG C for 1-24 hours and then charging the coated fine iron ore into a fluidized bed type furnace.
摘要（中）：
公开了一种在循环流化床型还原操作中降低细铁矿淘析损失的方法。 该方法包括以3〜6％体积的石灰石（CaCO 3）或白云石（CaCO 3，MgCO 3）与细铁矿石一起装入流化床型炉中。 在另一个实施方案中，该方法包括向细铁矿石添加0.2-5.0重量％的污泥并将它们混合，从而涂覆细铁矿石颗粒; 将涂覆的颗粒在105-800℃的温度下干燥1-24小时，然后将涂覆的细铁矿石装入流化床型炉中。