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    HYDROTHERMAL PROCESS FOR THE PRODUCTION OF LiFePO4 POWDER
    1.
    发明授权
    HYDROTHERMAL PROCESS FOR THE PRODUCTION OF LiFePO4 POWDER 有权
    水热法用于生产磷酸铁锂粉末

    公开(公告)号：EP2349925B1

    公开(公告)日：2012-03-21

    申请号：EP09752748.5

    申请日：2009-11-10

    申请人： Rockwood Italia SpA ,  Politecnico Di Torino

    发明人： BODOARDO, Silvia ,  GERBALDI, Claudio ,  MELIGRANA, Giuseppina ,  DI LUPO, Francesca ,  PENAZZI, Nerino ,  FONTANA, Daniela

    IPC分类号： C01B25/45 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/136

    CPC分类号： H01M4/136 ,  C01B25/45 ,  H01M4/1397 ,  H01M4/5825 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

    摘要： The present invention relates to a process for the production of LiFePO4 powder, comprising the steps: a) providing an aqueous solution of an organic surfactant; b) providing an aqueous solution of an iron (II) salt and mixing said aqueous iron (II) salt solution with an aqueous solution of a phosphate, to provide a mixed iron (II) salt/phosphate solution having a stoichiometric ratio of Fe2+:phosphate of about 1 : 1; c) adding the mixed iron (II) salt/phosphate solution to the surfactant solution under constant stirring; d) providing an aqueous solution comprising a lithium salt, adding said aqueous solution comprising a lithium salt to said mixed iron (II) salt/phosphate solution to provide a mixture having a stoichiometric ratio of Fe2+:phosphate:lithium salt of about 1 :1 :3 and stirring the resulting mixture; e) heating the resulting mixture at 80-200 °C; f) washing the resulting precipitate to remove excess surfactant, filtering and drying the precipitate; and g) heat treating the dried precipitate in an inert atmosphere by firing at 550-850 °C for at least 2 hours, wherein a co-solvent is added during or after any one of steps (a) to (d).

    Polysiloxane-coated iron oxide pigments
    5.
    发明公开
    Polysiloxane-coated iron oxide pigments 审中-公开
    聚硅氧烷涂层的氧化铁颜料

    公开(公告)号：EP2380860A1

    公开(公告)日：2011-10-26

    申请号：EP10004322.3

    申请日：2010-04-23

    申请人： Rockwood Italia SpA

    发明人： Ripandelli, Gerardo ,  Fontana, Daniela

    IPC分类号： C04B14/30 ,  C04B20/10 ,  C09C1/24

    CPC分类号： C04B14/308 ,  C04B20/1051 ,  C04B2103/54 ,  C04B2111/21 ,  C09C1/24

    摘要： The present invention relates to iron oxide particles, consisting of a core and a coating, wherein the core is essentially selected from FeO(OH), Fe 2 O 3 , or Fe 3 O 4 , and mixtures thereof, and the coating comprises a polysiloxane coating, wherein the polysiloxane coating is present in an amount of 0.1 % to 10% by weight based on the weight of the core.

    摘要翻译： 本发明涉及由核心和涂层组成的氧化铁粒子，其中核心基本上选自FeO（OH），Fe 2 O 3或Fe 3 O 4及其混合物，并且该涂层包含聚硅氧烷涂层，其中聚硅氧烷涂层 基于核的重量以0.1重量％至10重量％的量存在。

    HYDROTHERMAL PROCESS FOR THE PRODUCTION OF LiFePO4 POWDER
    6.
    发明公开
    HYDROTHERMAL PROCESS FOR THE PRODUCTION OF LiFePO4 POWDER 有权
    水热法用于生产磷酸铁锂粉末

    公开(公告)号：EP2349925A1

    公开(公告)日：2011-08-03

    申请号：EP09752748.5

    申请日：2009-11-10

    申请人： Rockwood Italia SpA ,  Politecnico Di Torino

    发明人： BODOARDO, Silvia ,  GERBALDI, Claudio ,  MELIGRANA, Giuseppina ,  DI LUPO, Francesca ,  PENAZZI, Nerino ,  FONTANA, Daniela

    IPC分类号： C01B25/45 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/136

    CPC分类号： H01M4/136 ,  C01B25/45 ,  H01M4/1397 ,  H01M4/5825 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

    摘要： The present invention relates to a process for the production of LiFePO
    4 powder, comprising the steps: a) providing an aqueous solution of an organic surfactant; b) providing an aqueous solution of an iron (II) salt and mixing said aqueous iron (II) salt solution with an aqueous solution of a phosphate, to provide a mixed iron (II) salt/phosphate solution having a stoichiometric ratio of Fe
    2+ :phosphate of about 1 : 1; c) adding the mixed iron (II) salt/phosphate solution to the surfactant solution under constant stirring; d) providing an aqueous solution comprising a lithium salt, adding said aqueous solution comprising a lithium salt to said mixed iron (II) salt/phosphate solution to provide a mixture having a stoichiometric ratio of Fe
    2+ :phosphate:lithium salt of about 1 :1 :3 and stirring the resulting mixture; e) heating the resulting mixture at 80-200 °C; f) washing the resulting precipitate to remove excess surfactant, filtering and drying the precipitate; and g) heat treating the dried precipitate in an inert atmosphere by firing at 550-850 °C for at least 2 hours, wherein a co-solvent is added during or after any one of steps (a) to (d).