公开(公告)号：EP1919839A1

公开(公告)日：2008-05-14

申请号：EP05792298.1

申请日：2005-09-12

申请人： Tata Steel Limited

发明人： Tata Steel Limited

IPC分类号： C04B5/00 ,  C04B28/08

CPC分类号： C04B5/06 ,  C04B7/147 ,  C04B18/146 ,  C04B28/082 ,  Y02P40/143 ,  Y02W30/94

摘要： The invention provides a process for conversion of basic oxygen furnace slag into construction materials like hydraulic binder in masonry blocks, flat sheets, bricks and tiles and also as a blend in cement manufacture or as in mortar for various applications. A required quantity of fluorspar is added to the molten slag for increasing its fluidity and the mixture is allowed to cool. The slag is then crushed to -3 mm size and any metallic fraction is separated using a magnetic separator. The -3 mm size non-metallic slag is ground to about 3000-4000 blain depending upon the application for which it is required. A desired quantity of gypsum can be mixed with the non-metallic fraction of the -3 mm slag before grinding.