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    • 6. 发明授权
    • Lithium-containing complex oxide and method of producing same
    • 含锂复合氧化物及其制造方法
    • US07288242B2
    • 2007-10-30
    • US10510800
    • 2003-01-15
    • Hiroshi TasakiYoshio Kajiya
    • Hiroshi TasakiYoshio Kajiya
    • C01D15/00C01D15/02
    • H01M4/505C01G45/1242C01P2004/03C01P2004/32C01P2006/11H01M10/052H01M2004/021
    • A lithium-containing complex oxide exhibits a high performance as a cathode active material of a lithium secondary cell or the like and having a high tap density. A granular lithium-containing complex oxide, such as lithium manganese complex oxide, is made up of “complex oxide grains produced by integrating lithium-rich material grains abnormally grown during a firing reaction with the surfaces of the base grains by sintering.” The number of complex oxide grains is not more than 50 per gram of the complex grains. A metal oxide such as manganese oxide and lithium carbonate not more than 5 μm in average grain size are mixed by means of a mixer which grinds and mixes particles by using a shearing force and heated and fired at a warming rate of not more than 50° C./h., thus producing the lithium-containing complex oxide.
    • 含锂复合氧化物表现出作为锂二次电池等的正极活性物质的高性能,并且具有高振实密度。 颗粒状含锂复合氧化物如锂锰复合氧化物由“通过烧结而使烧结反应期间异常生长的富含锂的材料颗粒与基体颗粒的表面积分的复合氧化物颗粒”组成。 复合氧化物颗粒的数量不超过每克复合颗粒的50个。 平均粒径不超过5μm的氧化锰和碳酸锂的金属氧化物通过使用剪切力研磨和混合颗粒的混合器混合,并以不大于50°的加热速率加热和烧制 C./h,从而制造含锂复合氧化物。
    • 9. 发明申请
    • High purity copper sulfate and method for production thereof
    • 高纯度硫酸铜及其制造方法
    • US20050232849A1
    • 2005-10-20
    • US10522273
    • 2003-08-12
    • Yuichiro ShindoKouichi Takemoto
    • Yuichiro ShindoKouichi Takemoto
    • C01G3/10C22B15/00
    • C01G3/10C22B15/0089Y02P10/236
    • High purity copper sulfate having a purity of 99.99% or higher and in which the content of transition metals such as Fe, Cr, Ni is 3 wtppm or less; and a method for producing such high purity copper sulfate which includes the steps of dissolving copper sulfate crystals in purified water, performing evaporative concentration thereto, removing the crystals precipitated initially, performing further evaporative concentration to effect crystallization, and subjecting this to filtration to obtain high purity copper sulfate. This manufacturing method of high purity copper sulfate allows the efficient removal of impurities from commercially available copper sulfate crystals at a low cost through dissolution with purified water and thermal concentration.
    • 纯度为99.99%以上的高纯度硫酸铜,Fe,Cr,Ni等过渡金属的含量为3重量ppm以下。 以及生产这种高纯度硫酸铜的方法,其包括将硫酸铜晶体溶解在纯净水中,进行蒸发浓缩,除去最初沉淀的晶体,进一步蒸发浓缩以进行结晶,并将其过滤得到高 纯度为硫酸铜。 这种高纯度硫酸铜的制造方法允许通过用纯化水溶解和热浓缩,以低成本有效地从市售的硫酸铜晶体中除去杂质。