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237 条记录 (耗时 0.017 秒)

    Method for producing highly pure lithium salts
    22.
    发明授权
    Method for producing highly pure lithium salts 失效
    生产高纯度锂盐的方法

    公开(公告)号：US06592832B1

    公开(公告)日：2003-07-15

    申请号：US09623110

    申请日：2000-08-29

    申请人： Holger Friedrich ,  Joachim Pfeffinger ,  Bernd Leutner

    发明人： Holger Friedrich ,  Joachim Pfeffinger ,  Bernd Leutner

    IPC分类号： C01D1500

    CPC分类号： C01D15/08 ,  B01J39/04 ,  C01D15/04

    摘要： A process for preparing a high purity lithium salt from lithium carbonate comprises steps A to D as defined hereinbelow: A: treating a mixture comprising lithium carbonate and water by means of CO2 to obtain an aqueous mixture comprising lithium bicarbonate, B: passing said aqueous mixture comprising lithium bicarbonate through an ion exchanger module, C: precipitating lithium carbonate from the ion exchange module treated lithium bicarbonate mixture obtained in step B, and D: working up the precipitated lithium carbonate or converting the precipitated lithium carbonate into some other high purity lithium salt.

    摘要翻译： 由碳酸锂制备高纯度锂盐的方法包括步骤A至D，如下所述：A：用CO 2处理包含碳酸锂和水的混合物，得到包含碳酸氢锂的水性混合物，B：通过所述含水混合物 包括通过离子交换器模块的碳酸氢锂，C：从步骤B中获得的离子交换模块处理的碳酸氢锂混合物中沉淀碳酸锂，以及D：处理沉淀的碳酸锂或将沉淀的碳酸锂转化成一些其它高纯度锂盐。

    Method of preparing lithium salts
    23.
    发明授权
    Method of preparing lithium salts 失效
    制备锂盐的方法

    公开(公告)号：US06555078B1

    公开(公告)日：2003-04-29

    申请号：US08931635

    申请日：1997-09-16

    申请人： Vijay Chandrakant Mehta

    发明人： Vijay Chandrakant Mehta

    IPC分类号： C01D1500

    CPC分类号： C01B17/66 ,  C01D15/00 ,  C01D15/02 ,  C01D15/04 ,  C01D15/06 ,  C01D15/08 ,  C01D15/10

    摘要： The present invention provides an inexpensive process for the preparation of lithium salts of formula LiX having a desired or required level of purity using lithium chloride and lithium sulfate. In the process of the invention, a lithium salt selected from lithium chloride, lithium sulfate, and combinations thereof is reacted with NaX or KX in a aqueous, semiaqueous, or organic solution and the precipitated salts are removed to obtain the LiX solution of desired purity. Preferably, a semiaqueous solution containing water and an organic solvent is used at some point in the reaction. The process of the invention eliminates the use of highly acidic materials and thus reduces the cost of raw materials and the need for specialized equipment.

    摘要翻译： 本发明提供了使用氯化锂和硫酸锂制备具有所需或要求的纯度的式LiX的锂盐的廉价方法。 在本发明的方法中，将选自氯化锂，硫酸锂及其组合的锂盐与NaX或KX在水溶液，半水或有机溶液中反应，除去沉淀的盐，得到所需纯度的LiX溶液 。 优选地，在反应的某一点使用含有水和有机溶剂的半水溶液。 本发明的方法消除了高酸性材料的使用，从而降低了原材料的成本和对专门设备的需要。

    Composition for the recovery of lithium values from brine and process of making/using said composition
    24.
    发明授权
    Composition for the recovery of lithium values from brine and process of making/using said composition 失效
    用于从盐水中回收锂值的组合物和制备/使用所述组合物的方法

    公开(公告)号：US06280693B1

    公开(公告)日：2001-08-28

    申请号：US08716954

    申请日：1996-09-20

    申请人： William C. Bauman ,  John L. Burba, III

    发明人： William C. Bauman ,  John L. Burba, III

    IPC分类号： C01D1500

    CPC分类号： C01D15/04 ,  B01J39/17 ,  B01J47/018 ,  C01F7/002

    摘要： The present invention is a composition comprising pellets, each of said pellets consisting essentially of an integral mass of polycrystalline material of randomly disposed crystals of hydrated alumina infused with an amount of LiX to produce LiX/Al(OH)3 having up to a mol fraction of 0.33 of LiX in the so-produced LiX/Al(OH)3, wherein LiX is at least one compound selected from the group consisting of Li hydroxide, Li halide, Li nitrate, Li sulfate, and Li bicarbonate. The present invention further includes methods of preparing the composition and methods of recovery lithium values from brine using the composition.

    摘要翻译： 本发明是一种包含颗粒的组合物，每个所述颗粒基本上由整体的多晶材料组成，其随机排列的水合氧化铝晶体注入一定量的LiX以产生具有高达摩尔分数的LiX / Al（OH）3 在生产的LiX / Al（OH）3中LiX为0.33，其中LiX为选自Li氢氧化物，Li卤化物，Li硝酸盐，Li硫酸盐和Li碳酸氢盐中的至少一种化合物。 本发明还包括使用该组合物制备组合物的方法和从盐水中回收锂值的方法。

    Electrolytic magnesium production process
    25.
    发明授权
    Electrolytic magnesium production process 失效
    电解镁生产工艺

    公开(公告)号：US5665220A

    公开(公告)日：1997-09-09

    申请号：US579057

    申请日：1995-12-26

    申请人： Ram Autar Sharma

    发明人： Ram Autar Sharma

    IPC分类号： C01D15/04 ,  C01F5/32 ,  C25C3/04 ,  C25C3/06 ,  C25C3/00

    CPC分类号： C01F5/32 ,  C01D15/04 ,  C25C3/04 ,  C25C3/06 ,  Y10S423/12

    摘要： In the electrolytic production of magnesium from an electrolyte comprising magnesium chloride and impurity quantities of magnesium oxide which adversely affects the efficiency of cell operation, the magnesium oxide is chemically and electrolytically removed from the electrolyte by sparging the electrolyte with hydrogen and/or hydrocarbon gas adjacent the anode such that MgO reacts with H.sub.2 or, e.g., CH.sub.4 and Cl.sub.2 (generated at the anode) under the electrical potential of the cell to form magnesium chloride. Similarly, magnesium oxide may be mixed and stirred in molten magnesium chloride and reacted with Cl.sub.2 and H.sub.2 (and/or hydrocarbon) to form anhydrous MgCl.sub.2 for use in magnesium production.

    摘要翻译： 在由包含氯化镁的电解质和杂质量的氧化镁的电解生产镁中，这对电池操作的效率有不利影响，氧化镁通过用相邻的氢气和/或烃气体喷射电解质而从电解质中进行化学和电解去除 阳极使得MgO在电池的电位下与H 2或例如CH 4和Cl 2（在阳极产生）反应以形成氯化镁。 类似地，氧化镁可以在熔融氯化镁中混合并搅拌，并与Cl 2和H 2（和/或烃）反应形成用于镁生产的无水MgCl 2。

    Production of highly pure lithium chloride from impure brines
    28.
    发明授权
    Production of highly pure lithium chloride from impure brines 失效
    从不纯的盐水生产高纯氯化锂

    公开(公告)号：US4271131A

    公开(公告)日：1981-06-02

    申请号：US28973

    申请日：1979-04-11

    申请人： Patrick M. Brown ,  Susan R. Jacob ,  Daniel A. Boryta

    发明人： Patrick M. Brown ,  Susan R. Jacob ,  Daniel A. Boryta

    IPC分类号： C01D15/04

    CPC分类号： C01D15/04 ,  Y02P20/125 ,  Y02P20/134 ,  Y10S159/903

    摘要： Highly pure lithium chloride suitable for use in production of lithium metal by electrolysis is obtained directly from impure natural or other lithium chloride brines by an integrated process in which the brine is first concentrated by solar energy to a lithium chloride concentration of about 3%, after which the brine is treated with lime and calcium chloride to convert such impurities as boron, magnesium and sulfate to a calcium borate hydrate, magnesium hydroxide and calcium sulfate dihydrate, respectively, and separating the precipitated calcium sulfate dihydrate from the brine. The brine is then further concentrated to 40% or more lithium chloride by means of solar or other energy, during which concentration step the calcium borate hydrate, magnesium hydroxide and calcium sulfate dihydrate precipitate from the brine. The highly concentrated brine is subjected to evaporation at a temperature above 101.degree. C. to produce anhydrous lithium chloride which is further heated to a temperature of 200.degree. C. or more, followed by extraction of the lithium chloride with isopropanol. After removal of solvent a highly pure lithium chloride product is obtained.

    摘要翻译： 适用于通过电解生产锂金属的高纯度氯化锂通过一体化方法直接从不纯的天然或其他氯化锂盐水中获得，其中盐水首先通过太阳能浓缩至约3％的氯化锂浓度，之后 其中盐水用石灰和氯化钙处理以分别将诸如硼，镁和硫酸盐的杂质转化成硼酸钙水合物，氢氧化镁和硫酸钙二水合物，并将沉淀的硫酸钙二水合物与盐水分离。 然后通过太阳能或其他能量将盐水进一步浓缩至40％以上的氯化锂，在此期间，浓缩步骤中，硼酸钙水合物，氢氧化镁和硫酸钙二水合物从盐水中沉淀出来。 将高浓度的盐水在高于101℃的温度下进行蒸发以制备无水氯化锂，将其进一步加热到200℃或更高的温度，然后用异丙醇萃取氯化锂。 除去溶剂后，得到高纯度的氯化锂产物。