公开(公告)号：EP1255696B1

公开(公告)日：2008-04-23

申请号：EP01912717.4

申请日：2001-02-09

申请人： Millennium Inorganic Chemicals, Inc.

发明人： DEBERRY, James, Clark ,  ROBINSON, Michael ,  POMPONI, Mark, Douglas ,  BEACH, Anthony J. ,  XIONG, Yun ,  AKHTAR, Kamal

IPC分类号： C01G23/047 ,  C01G23/07

CPC分类号： C01G23/07 ,  C01P2004/62

摘要： A process for controlling the formation of TiO2 particles in a multi-stage vapor-phase oxidation reactor wherein the process includes the steps of limiting the fraction of TiCl4 converted into TiO2 in the reaction stream of a first or intermediate stage of the reactor under conditions that control the mean residence time distribution of the reacting mass. By running the reaction in this manner, the growth of TiO2 particles produced is so controlled that after subsequent standard finishing steps (e.g. milling) the fraction of particles having an average size of less than 0.5 mu m is reduced or minimized.

公开(公告)号：EP1499752B1

公开(公告)日：2009-07-01

申请号：EP03733883.7

申请日：2003-04-15

申请人： Millennium Inorganic Chemicals, Inc.

发明人： EARL, Smith ,  ROBINSON, Michael ,  TALATI, Kirit

IPC分类号： C22B34/12 ,  C22B3/08 ,  C22B1/00 ,  C01G23/047

CPC分类号： C22B34/125 ,  C01G23/0532 ,  C22B19/20 ,  C22B34/1213 ,  Y02P10/212

摘要： Processes for the efficient and economical beneficiation of titaniferous ore are provided. A unique process for beneficiating ore comprising pretreatment of the ore by oxidation and reduction, followed by acid leaching with sulfuric acid has been developed. The acid used in this process may be recycled, which will thereby increase the efficiency of the process. Preferably the ore treated according to the present invention is ilmenite ore.

公开(公告)号：EP1255696A1

公开(公告)日：2002-11-13

申请号：EP01912717.4

申请日：2001-02-09

申请人： Millennium Inorganic Chemicals, Inc.

发明人： DEBERRY, James, Clark ,  ROBINSON, Michael ,  POMPONI, Mark, Douglas ,  BEACH, Anthony J. ,  XIONG, Yun ,  AKHTAR, Kamal

IPC分类号： C01G23/047

CPC分类号： C01G23/07 ,  C01P2004/62

摘要： A process for controlling the formation of TiO2 particles in a multi-stage vapor-phase oxidation reactor wherein the process includes the steps of limiting the fraction of TiCl4 converted into TiO2 in the reaction stream of a first or intermediate stage of the reactor under conditions that control the mean residence time distribution of the reacting mass. By running the reaction in this manner, the growth of TiO2 particles produced is so controlled that after subsequent standard finishing steps (e.g. milling) the fraction of particles having an average size of less than 0.5 νm is reduced or minimized.

公开(公告)号：EP1499752A2

公开(公告)日：2005-01-26

申请号：EP03733883.7

申请日：2003-04-15

申请人： Millennium Inorganic Chemicals, Inc.

发明人： EARL, Smith ,  ROBINSON, Michael ,  TALATI, Kirit

IPC分类号： C22B34/12 ,  C22B3/08 ,  C22B1/00 ,  C01G23/047

CPC分类号： C22B34/125 ,  C01G23/0532 ,  C22B19/20 ,  C22B34/1213 ,  Y02P10/212

摘要： Processes for the efficient and economical beneficiation of titaniferous ore are provided. A unique process for beneficiating ore comprising pretreatment of the ore by oxidation and reduction, followed by acid leaching with sulfuric acid has been developed. The acid used in this process may be recycled, which will thereby increase the efficiency of the process. Preferably the ore treated according to the present invention is ilmenite ore.

公开(公告)号：EP1476402A2

公开(公告)日：2004-11-17

申请号：EP03713314.7

申请日：2003-01-29

申请人： Millennium Inorganic Chemicals, Inc.

发明人： CARTER, Peter,Badger's Wood, Main Road ,  DAVID, Christopher, John ,  ROBINSON, Michael ,  TALATI, Kirit

IPC分类号： C02F1/66 ,  C02F1/64 ,  C02F9/00

CPC分类号： C02F9/00 ,  C02F1/5236 ,  C02F1/66 ,  C02F2101/203 ,  C02F2103/10 ,  C02F2103/16 ,  C22B3/44 ,  C22B34/1209 ,  C22B34/1259 ,  Y02P10/234

摘要： Processes for treating iron containing waste streams are provided. According to these processes, metal-containing compounds, particularly iron oxides are produced. These methods may, for example, be used in the porcessing of the waste streams from the chlorination of titanium-bearing raw materials and involve the use of certain combinations of neutralization and precipitation steps.