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    Method for producing titanium dioxide pigment
    1.
    发明授权
    Method for producing titanium dioxide pigment 失效
    生产二氧化钛颜料的方法

    公开(公告)号：US3582278A

    公开(公告)日：1971-06-01

    申请号：US3582278D

    申请日：1969-12-03

    申请人： TITAN GMBH

    发明人： KULLING ACHIM ,  STEINBACH HANS ,  GLADBACH BERGISCH ,  TRUEB HERMANN

    IPC分类号： C01G23/07 ,  C01G23/04

    CPC分类号： C01G23/07 ,  C01P2006/60

    摘要： THE PRESENT APPLICATION IS A DIVISION OF APPLICATION SER. NO. 723,70, FILED APR. 24, 1968, AND RELATES TO A NOVEL METHOD FOR PRODUCING A RUTILE TIO2 PIGMENT BY A VAPOR PHASE PROCESS WHEREIN THE HEAT REQUIRED FOR THE REACTION OF THE GASEOUS TICL4 WITH OXYGEN IS PROVIDED BY A COLUMN OF HOT COMBUSTION GASES WHICH FILLS THE ENTIRE CROSSSECTION OF A PRE-COMBUSTION CHAMBER IMMEDIATELY PRECEDING A FEEDING RING DESIGNED TO INTRODUCE GASEOUS TICL4 INTO THE COLUMN OF HOT GASES FROM A MULTIPLICITY OF RADIAL APERTURES SURROUNDING THE COLUMN OF HOT COMBUSTION GASES AND LYING IN A COMMON PLANE SUBSTANTIALLY AT RIGHT ANGLES TO ITS LONGITUDINAL AXIS, THE REACTION THE TICL4 WITH THE O2 IN SAID HOT GASES TAKING PLACE WITHIN A RELATIVELY SHORT REACTION ZONE IMMEDIATELY SUCCEEDING THE TICL4 FEEDING RING THUS INSURING HIGH REACTION TEMPERATURES, SHORT REACTION TIME, UNIFORM RESIDENCE TIME AND NO REVERSE CURENTS IN THE REACTION ZONE.

    Means for producing pyrogenic titanium dioxide pigment
    2.
    发明授权
    Means for producing pyrogenic titanium dioxide pigment 失效
    用于生产二氧化钛二氧化钛颜料的方法

    公开(公告)号：US3694168A

    公开(公告)日：1972-09-26

    申请号：US3694168D

    申请日：1970-01-28

    申请人： TITAN GMBH

    发明人： HILGERS GIOVANNI ,  BECHEN HAU POST ,  HITZEMANN GERHARD ,  DIERDORF POST ,  KULLING ACHIM

    IPC分类号： C01G23/07 ,  C01G23/04 ,  F22D11/04

    CPC分类号： C01G23/07

    摘要： MEANS FOR PRODUCING PYROGENIC TITANIUM DIOXIDE BY REACTION OF GASEOUS TITANIUM TETRACHLORIDE AND OXYGEN IN THE PRESENCE OF HOT COMBUSTION GASES PRODUCED BY THE COMBUSTION OF CARBON MONOXIDE THE REACTION OF THE SEVERAL GASES BEING INITIATED BY FEEDING THE SEVERAL GASES FROM A TUBULAR BURNER ASSEMBLY INTO CONTACT WITH A ROTATING RELATIVELY COLD BODY WITHIN THE REACTION CHAMBER SAID COLD BODY ROTATING AT SPEEDS AT LEAST 50 TIMES TERRESTIAL ACCELERATION WHEREBY THE SEVERAL GASES ARE THROUGHLY MIXED AT REACTION AND THE TIO2 REACTION PRODUCT PRECLUDED FROM ADHERING TO SURFACES OF THE ASSEMBLY.

    Process for the manufacture of acicular rutile pigments from hydrochloric acid titanium chloride solutions
    3.
    发明授权
    Process for the manufacture of acicular rutile pigments from hydrochloric acid titanium chloride solutions 失效
    氯化氢氯化钛溶液制备活性染料的方法

    公开(公告)号：US3549322A

    公开(公告)日：1970-12-22

    申请号：US3549322D

    申请日：1969-02-03

    申请人： TITAN GMBH

    发明人： KLEIN EDGAR ,  KULLING ACHIM ,  STEINHAUSEN HELMUT

    IPC分类号： C01G23/00 ,  C01G23/053 ,  C09C1/00 ,  C09C1/36 ,  C01G23/06 ,  C01G23/08

    CPC分类号： C09C1/3692 ,  C01G23/0538 ,  C01P2004/10 ,  C01P2004/54 ,  C01P2006/60 ,  C09C1/3607 ,  C09C3/043 ,  C09C3/06

    摘要： 1,254,729. Titanium dioxide. TITANG.m.b.H. 10 Feb:, 1969 [17 Feb., 1968], No. 7177/69. Heading C1N. 'Needle-shaped TiO 2 particles, or star-shaped agglomerates thereof, are made by (1) heating to 80-100‹ C. an HCl solution of titanium chloride (130-250. g. TiO 2 /l.) in which the molar ratio HCl not bonded to Fe : TiO 2 is 2-5 :1; (2) mixing this solution with a seed solution, heated to 70-100‹.C. and having a Ti content equivalent to 5-30 g. TiO 2 /l., the amount of seed being 1- 4% by wt. of the total amount of TiO 2 ; (3) heating the mixture at about 105‹ C. for 0À5-3 hours to hydrolyse the titanium chloride solution; (4) separating needle-shaped TiO 2 hydrate precipitate and calcining it at 800-900‹ C in presence of a growth-inhibiting compound of one or more of K, Rb, Cs, Ca, Sr, Ba, Al, S, P and Si; (5) grinding the calcined product under such mild conditions that the needles -are not destroyed. The initial titanium chloride solution may be one obtained by digestion of an ore with cone. HCl arid which has been freed of part of the iron initially present by crystallization. In examples, calcination is effected in presence of (1) 0À28% K 2 O and 0À5% SiO 2 ; (2) 0À28% K 2 O ; (3) 0À28% K 2 O and 0À6% P 2 O 5 . The initial titanium chloride solution, derived from ilmenite, contained Fe and Mg.