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    METHOD FOR MAKING A SCOUR MEDIUM AND USE OF SUCH MEDIUM IN A METHOD FOR PRODUCING RUTILE TITANIUM DIOXIDE
    1.
    发明授权
    METHOD FOR MAKING A SCOUR MEDIUM AND USE OF SUCH MEDIUM IN A METHOD FOR PRODUCING RUTILE TITANIUM DIOXIDE 有权
    工艺用于制造工序的清洗介质而这种介质的使用生产金红石型二氧化钛

    公开(公告)号：EP1940743B1

    公开(公告)日：2009-04-08

    申请号：EP06802364.7

    申请日：2006-08-25

    申请人： Tronox LLC

    发明人： FLYNN, Harry, E.

    IPC分类号： C01G23/07

    CPC分类号： C01G23/07 ,  C01P2006/10 ,  C01P2006/21

    摘要： A blend of anatase and rutile titanium dioxides is calcined to a crush strength and density meeting the requirements for an acceptable scour medium in a chloride process for producing rutile titanium dioxide pigments. By using such a blend, a greater conversion of the anatase titanium dioxide can be realized than would be observed under the same calcination conditions were only anatase titanium dioxide calcined, so that a significant proportion of the less costly and less valuable anatase titanium dioxide can be used and the scour medium employed at customary rates of addition, without requiring separation of the scour medium from the produced rutile titanium dioxide and while keeping the rutile content of the combined spent scour medium and produced rutile titanium dioxide at 99 percent and greater by weight.

    METHOD FOR MAKING A SCOUR MEDIUM AND USE OF SUCH MEDIUM IN A METHOD FOR PRODUCING RUTILE TITANIUM DIOXIDE
    2.
    发明公开
    METHOD FOR MAKING A SCOUR MEDIUM AND USE OF SUCH MEDIUM IN A METHOD FOR PRODUCING RUTILE TITANIUM DIOXIDE 有权
    工艺用于制造工序的清洗介质而这种介质的使用生产金红石型二氧化钛

    公开(公告)号：EP1940743A2

    公开(公告)日：2008-07-09

    申请号：EP06802364.7

    申请日：2006-08-25

    申请人： Tronox LLC

    发明人： FLYNN, Harry, E.

    IPC分类号： C01G23/07

    CPC分类号： C01G23/07 ,  C01P2006/10 ,  C01P2006/21

    摘要： A blend of anatase and rutile titanium dioxides is calcined to a crush strength and density meeting the requirements for an acceptable scour medium in a chloride process for producing rutile titanium dioxide pigments. By using such a blend, a greater conversion of the anatase titanium dioxide can be realized than would be observed under the same calcination conditions were only anatase titanium dioxide calcined, so that a significant proportion of the less costly and less valuable anatase titanium dioxide can be used and the scour medium employed at customary rates of addition, without requiring separation of the scour medium from the produced rutile titanium dioxide and while keeping the rutile content of the combined spent scour medium and produced rutile titanium dioxide at 99 percent and greater by weight.

    METHODS OF CONTROLLING THE PARTICLE SIZE OF TITANIUM DIOXIDE PRODUCED BY THE CHLORIDE PROCESS
    3.
    发明授权
    METHODS OF CONTROLLING THE PARTICLE SIZE OF TITANIUM DIOXIDE PRODUCED BY THE CHLORIDE PROCESS 有权
    方法用于控制后氯化法生产二氧化钛粒径

    公开(公告)号：EP1943190B1

    公开(公告)日：2010-11-10

    申请号：EP05796757.2

    申请日：2005-09-16

    申请人： Tronox LLC

    发明人： FLYNN, Harry, E. ,  MARTIN, Robert, O. ,  NATALIE, Charles, A. ,  GILES, Jeffrey, W.

    IPC分类号： C01G23/047

    CPC分类号： C01G23/07

    摘要： A process for manufacturing titanium dioxide by the chloride process is provided. In one embodiment, a particle size control agent comprising an ionizing agent such as potassium chloride is introduced into the reaction zone of the oxidation reactor to control the particle size of the titanium dioxide. In a first aspect, the effectiveness of the particle size control agent in controlling the particle size of the titanium dioxide is improved by adding the particle size control agent to at least one of the reactant streams at a sufficient distance upstream of the oxidization reactor to allow the ionizing agent to efficiently ionize and the particle size control agent to thoroughly admix with the stream(s) prior to entering the reaction zone. In a second aspect, the particle size control agent comprises an ionizing agent and fumed silica. In another embodiment, the amount of alumina added to the reaction zone of the oxidization reactor is increased in order to control the particle size of the titanium dioxide.

    METHODS OF CONTROLLING THE PARTICLE SIZE OF TITANIUM DIOXIDE PRODUCED BY THE CHLORIDE PROCESS
    5.
    发明公开
    METHODS OF CONTROLLING THE PARTICLE SIZE OF TITANIUM DIOXIDE PRODUCED BY THE CHLORIDE PROCESS 有权
    方法用于控制后氯化法生产二氧化钛粒径

    公开(公告)号：EP1943190A1

    公开(公告)日：2008-07-16

    申请号：EP05796757.2

    申请日：2005-09-16

    申请人： Tronox LLC

    发明人： FLYNN, Harry, E. ,  MARTIN, Robert, O. ,  NATALIE, Charles, A. ,  GILES, Jeffrey, W.

    IPC分类号： C01G23/047

    CPC分类号： C01G23/07

    摘要： A process for manufacturing titanium dioxide by the chloride process is provided. In one embodiment, a particle size control agent comprising an ionizing agent such as potassium chloride is introduced into the reaction zone of the oxidation reactor to control the particle size of the titanium dioxide. In a first aspect, the effectiveness of the particle size control agent in controlling the particle size of the titanium dioxide is improved by adding the particle size control agent to at least one of the reactant streams at a sufficient distance upstream of the oxidization reactor to allow the ionizing agent to efficiently ionize and the particle size control agent to thoroughly admix with the stream(s) prior to entering the reaction zone. In a second aspect, the particle size control agent comprises an ionizing agent and fumed silica. In another embodiment, the amount of alumina added to the reaction zone of the oxidization reactor is increased in order to control the particle size of the titanium dioxide.

    CENTRIFUGAL ALUMINUM CHLORIDE GENERATOR
    6.
    发明公开
    CENTRIFUGAL ALUMINUM CHLORIDE GENERATOR 审中-公开

    公开(公告)号：EP4029831A1

    公开(公告)日：2022-07-20

    申请号：EP22160725.2

    申请日：2017-03-29

    申请人： Tronox LLC

    发明人： FLYNN, Harry, E.

    IPC分类号： C01G23/047 ,  C01G23/02 ,  C01F7/56

    摘要： A metal chloride generator is provided. The metal chloride generator is a metal chloride centrifugal reactor that can be operated under conditions sufficient to cause metal particles and chlorine in the generator to be brought into contact with one another and react using centrifugal force to form metal chloride. A process for manufacturing titanium dioxide that utilizes the metal chloride generator is also provided.

    PROCESS FOR PRODUCING AND COOLING TITANIUM DIOXIDE
    8.
    发明授权
    PROCESS FOR PRODUCING AND COOLING TITANIUM DIOXIDE 无效
    用于生产二氧化钛的冷却

    公开(公告)号：EP1326804B1

    公开(公告)日：2011-01-19

    申请号：EP01975754.1

    申请日：2001-09-17

    申请人： Tronox LLC

    发明人： YUILL, William, A. ,  NATALIE, Charles, A. ,  FLYNN, Harry, E. ,  FILLIPI, Bita

    IPC分类号： C01G23/047 ,  C01G23/07 ,  F28D7/04

    CPC分类号： C01G23/075 ,  C01G23/07 ,  C01P2006/60

    摘要： An improved process for producing titanium dioxide wherein gaseous titanium tetrachloride and oxygen are reacted at a high temperature to produce particulate solid titanium dioxide and gaseous reaction products is provided. The titanium dioxide and gaseous reaction products are cooled by passing them through a tubular heat exchanger along with a scouring medium for removing deposits from the inside surfaces of the tubular heat exchange. By this invention, the particulate scouring medium, the particulate titanium dioxide and the gaseous reaction products are caused to follow a spiral path as they flow through the tubular heat exchanger whereby the scouring medium more thoroughly removes the deposits and the titanium dioxide and gaseous reaction products are cooled more efficiently.