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    Verfahren zur Herstellung von Eisenoxidgelbpigmenten
    82.
    发明公开
    Verfahren zur Herstellung von Eisenoxidgelbpigmenten 失效
    一种用于制备黄色氧化铁颜料的方法。

    公开(公告)号：EP0401624A1

    公开(公告)日：1990-12-12

    申请号：EP90110027.1

    申请日：1990-05-26

    申请人： BAYER AG

    发明人： Kröckert, Bernd, Dr. ,  Printzen, Helmut, Dr. ,  Ganter, Karl-Werner, Dr. ,  Buxbaum, Gunter, Dr.

    IPC分类号： C01G49/06

    CPC分类号： C01G49/06 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C01P2006/65 ,  C09C1/24

    摘要： Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Eisenoxidgelbpigmenten nach dem Penniman-Zoph-Verfahren aus den Rohstoffen Eisen­(II)sulfat, Natronlauge und metallischem Eisen, wobei in Gegenwart von Goethit-Keimen Eisen (II) durch Be­gasung mit Luft zu Eisen (III) oxidiert werden, das Eisen(III)sulfat unter Bildung von Eisen (II) auflöst und die Geothit-Keime zu Eisenoxidgelbpigmenten auf­gebaut werden.

    摘要翻译： 本发明涉及一种方法，用于由彭尼曼Zoph过程中从原料铁制备氧化铁黄颜料（II），硫酸，氢氧化钠溶液和金属铁，其中在针铁矿核铁（II）（的存在下，通过以铁III供给空气 被氧化），铁（III）硫酸盐，以形成铁（II）溶解，针铁矿细胞核被建造到氧化铁黄颜料。

    Process for production of lepidocrosite
    83.
    发明公开
    Process for production of lepidocrosite 失效
    Verfahren zur Herstellung von Lepidokrokit。

    公开(公告)号：EP0391388A1

    公开(公告)日：1990-10-10

    申请号：EP90106432.9

    申请日：1990-04-04

    申请人： SHOWA DENKO KABUSHIKI KAISHA

    发明人： Kimura, Kiichi c/o Showa Denko K.K. ,  Kaji, Hiroaki c/o Showa Denko K.K. ,  Okazaki, Kenichi c/o Showa Denko K.K.

    IPC分类号： C01G49/06

    CPC分类号： G11B5/70663 ,  C01G49/06 ,  C01P2004/04 ,  C01P2004/10 ,  C01P2006/12

    摘要： Disclosed is a process for the production of lepidocrosite, which comprises the step of adding an alkali to an aqueous solution of ferrous chloride in an amount 0.20 to 0.95 times the theoretical amount necessary for converting the ferrous chloride to ferrous hydroxide, the step of blowing an oxygen-containing gas into the obtained Fe²⁺-containing solution to form a seed crystal of γ-FeOOH, the step of aging and growing γ-FeOOH while maintaining the Fe²⁺-containing solution at a pH value of 2.0 to 8.0 in a non-oxidizing atmosphere, and the step of separating grown particles of γ-FeOOH from the Fe²⁺-containing solution without addition of an oxygen-containing gas and an alkali, and washing the separated particles. According to this process, lepidocrosite having a sharp particle size distribution (uniform particle size) without agglom­eration can be obtained.

    摘要翻译： 公开了一种生产线虫病的方法，其包括向氯化亚铁的水溶液中添加碱金属的步骤，其量为将氯化亚铁转化为氢氧化亚铁所需的理论量的0.20至0.95倍，吹入 将含氧气体加入到所得含Fe 2+溶液中以形成γ-FeOOH晶种，同时保持含有含Fe 2+的溶液在老化和生长γ-FeOOH的步骤 在非氧化性气氛中的pH值为2.0〜8.0，以及从不含有含氧气体和碱的含Fe 2+溶液中分离生长的γ-FeOOH颗粒的步骤，以及 洗涤分离的颗粒。 根据该方法，可以获得没有附聚的具有尖锐的粒度分布（均匀的粒径）的纤维球。

    Process for producing acicular iron alpha-oxyhydroxide particles
    87.
    发明公开
    Process for producing acicular iron alpha-oxyhydroxide particles 失效
    生产活性氧化铝 - 氧化二氧化硅颗粒的方法

    公开(公告)号：EP0269361A3

    公开(公告)日：1990-01-17

    申请号：EP87310171.1

    申请日：1987-11-18

    申请人： Chisso Corporation

    发明人： Saito, Masayoshi ,  I, Jiro

    IPC分类号： C01G49/06 ,  C01G49/02

    CPC分类号： B82Y30/00 ,  C01G49/06 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  G11B5/70663

    摘要： A process for producing acicular α-FeOOH particles having a narrow particle size distribution and recitified shape and being highly dispersed, which process comprises mixing with stirring an aqueous solution of a Fe(II) salt with an aqueous solution of an alkali in an equivalent ratio of alkali to Fe(II) salt of 1.5 or more, oxidizing the mixture with a O₂-containing gas, heat treating the resulting suspension of iron α-FeOOH particles to 60° to 100°C, further adding an aqueous solution of a Fe(II) salt in a proportion of Fe(II) to α-FeOOH of 0.5 to 10% and again oxidizing the mixture with a O₂-containing gas at 35° to 55°C.

    Iron oxide for ferrite
    88.
    发明公开
    Iron oxide for ferrite 失效
    EisenoxidfürFerrit。

    公开(公告)号：EP0343283A2

    公开(公告)日：1989-11-29

    申请号：EP88121025.6

    申请日：1988-12-15

    申请人： Chemirite, Ltd. ,  TDK Corporation

    发明人： Hirai, Naoe ,  Murase, Tohoru ,  Okutani, Katsunobu ,  Mori, Teruo

    IPC分类号： C01G49/06

    CPC分类号： C04B35/2658 ,  C01G49/06 ,  C01P2006/42 ,  C01P2006/80

    摘要： According to the invention, an iron oxide is provided for ferrite having a Mn content of 0,1 to 0,3 % by weight and a P content of not more than 0,005 % by weight. Such an iron oxide can easily be produced by making an iron chloride solution, dephosphorizing the iron chloride solution by a simple process and oxidizing roasting the dephosphorized solution to provide the desired iron oxide. Although Mn is contained as an impurity the ferrite properties are not impaired thereby since attention is paid to the impurities of P which are at a low level. Accordingly, soft ferrite can be produced having excellent ferrite properties.

    摘要翻译： 根据本发明，提供了一种氧化铁，其铁含量为Mn含量为0.1至0.3重量％，P含量不超过0.005重量％。 这样的氧化铁可以容易地通过制造氯化铁溶液来制造，通过简单的方法对氯化铁溶液进行脱磷，并对脱磷酸溶液进行氧化焙烧以提供所需的氧化铁。 虽然含有Mn作为杂质，但由于注意处于低水平的P的杂质，铁素体的性质不会受到损害。 因此，可以制造铁氧体性质优异的软铁氧体。

    Process for preparing an iron oxide
    89.
    发明公开
    Process for preparing an iron oxide 失效
    制备氧化铁的方法

    公开(公告)号：EP0307486A3

    公开(公告)日：1989-05-17

    申请号：EP87102820.5

    申请日：1984-02-13

    申请人： Cookson Laminox Limited

    发明人： Laundon, Roy David ,  Wickens, Anthony John ,  Turner, John Harry Wallice

    IPC分类号： C01G49/06 ,  C09C1/24

    CPC分类号： B01J10/005 ,  C01G49/06 ,  C01P2004/20 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/61 ,  C09C1/245

    摘要： A process is disclosed for the production of micaceous iron oxide wherein an iron chloride is oxidised at an elevated temperature in the presence of a salt of an alkali metal or alkaline earth metal, preferably sodium chloride. A reaction may be effected in a packed tower reactor comprising a refractory tube 7 containing an inert packing material e.g. aluminosilicate ceramic balls. The reaction charge including packing material, metallic iron and the salt is introduced via hopper 13. A tube 7 is externally heated by electrical resistance elements 10 and chlorine and an oxidising gas are introduced at inlet 8 and the off-gas removed at outlet 9. The micaceous iron reaction product is obtained from a melt film formed on the inert packing material, the film having a minimum thickness of 150 µm. Micaceous iron oxide is used as a pigment for the formulation of metal protective paints.