Process for removing sodium sulfate from nickel hydroxide effluent streams
    11.
    发明授权
    Process for removing sodium sulfate from nickel hydroxide effluent streams 失效
    从氢氧化镍流出物流中除去硫酸钠的方法

    公开(公告)号:US06652603B2

    公开(公告)日:2003-11-25

    申请号:US09896806

    申请日:2001-06-29

    申请人: Juraj Babjak Feng Zou

    发明人: Juraj Babjak Feng Zou

    IPC分类号: B01D900

    摘要: A method for removing sodium sulfate from nickel and ammonia containing aqueous effluents. The effluents, typically from a nickel hydroxide production process, are cooled to or below 30° C. to crystallize and precipitate the sodium sulfate and dewater the effluent. The sodium sulfate is retrieved and the remaining solution is recycled back to the nickel hydroxide production process.

    摘要翻译: 从含镍和含氨水的废水中除去硫酸钠的方法。 通常来自氢氧化镍生产过程的流出物被冷却至或低于30℃以结晶并沉淀硫酸钠并使流出物脱水。 回收硫酸钠,将剩余的溶液循环回氢氧化镍生产过程。

    Process for producing nickel hydroxide from elemental nickel
    17.
    发明授权
    Process for producing nickel hydroxide from elemental nickel 失效
    从元素镍生产氢氧化镍的方法

    公开(公告)号:US5545392A

    公开(公告)日:1996-08-13

    申请号:US402368

    申请日:1995-03-13

    摘要: The invention provides a method of producing nickel hydroxide from elemental metal. Elemental nickel is first introduced into an aqueous ammonia or ammonia/ammonium salt solution capable of dissolving nickel. The potential, as measured by a standard calomel electrode, is allowed to reach a negative or reducing level. Oxygen is added to the aqueous solution at a rate that maintains the negative potential to facilitate the conversion of elemental nickel to nickel hydroxide. Nickel hydroxide may be readily precipitated from the aqueous solution.

    摘要翻译: 本发明提供从元素金属制造氢氧化镍的方法。 首先将元素镍引入能够溶解镍的氨水或氨/铵盐溶液中。 由标准甘汞电极测量的电位被允许达到负的或降低的水平。 将氧气以维持负电位的速率加入到水溶液中,以促进元素镍转化为氢氧化镍。 氢氧化镍可能容易从水溶液中沉淀出来。

    Process for producing nickel hydroxide
    18.
    发明授权
    Process for producing nickel hydroxide 失效
    生产氢氧化镍的方法

    公开(公告)号:US5447707A

    公开(公告)日:1995-09-05

    申请号:US196769

    申请日:1994-02-10

    摘要: A process for producing nickel hydroxide from nickel powders, in which the feed nickel powder is directly converted in an aqueous solution containing nitrate and particulate nickel at least at room temperature and a pH in excess of about 6 into nickel hydroxide of a high density. Nickel powders of high surface area, e.g. 0.4 m.sup.2 /g or higher, typically produced by the thermal decomposition of nickel carbonyl, are particularly suitable as feed materials for this process.

    摘要翻译: 一种从镍粉生产氢氧化镍的方法,其中将进料镍粉末至少在室温下直接转化成含有硝酸盐和颗粒状镍的水溶液,并将pH超过约6转化成高密度氢氧化镍。 高表面积的镍粉,例如 通常通过羰基镍热分解产生的0.4m 2 / g或更高,特别适用于该方法的进料。

    Infrared window
    19.
    发明授权
    Infrared window 失效
    红外窗口

    公开(公告)号:US5145716A

    公开(公告)日:1992-09-08

    申请号:US560859

    申请日:1990-07-27

    IPC分类号: C23C16/16 C23C16/48

    CPC分类号: C23C16/16 C23C16/481

    摘要: The invention provides an apparatus for metal plating a substrate. The apparatus includes a chamber adapted to receive metal carbonyl gas. The chamber includes an infrared transparent window. The infrared transparent window has a cooling passage filled with liquid coolant. The liquid coolant has a temperature below which decomposition of the metal carbonyl gas occurs. The liquid coolant prevents decomposition of the metal carbonyl gas on the infrared transparent window. The liquid coolant also is substantially infrared transparent for allowing infrared radiation through the infrared transparent window and cooling passage into the chamber. An infrared radiation source sends infrared radiation into the chamber through the infrared transparent window and cooling passage to heat the substrate to a temperature at which decomposition of the metal carbonyl gas occurs.

    Leaching of uranium ore
    20.
    发明授权
    Leaching of uranium ore 失效
    铀矿的浸出

    公开(公告)号:US4764353A

    公开(公告)日:1988-08-16

    申请号:US380075

    申请日:1982-05-20

    IPC分类号: C22B60/02 C01G43/01

    CPC分类号: C22B60/0234 C22B60/0208

    摘要: Uranium is leached from water slurries of uranium ore by incorporating a mixture of sulfur dioxide and air therein to provide the oxidizing and acidifying requirements to accomplish leaching.

    摘要翻译: 通过在其中混合二氧化硫和空气来将铀从铀矿石的水浆中浸出以提供氧化和酸化的要求以完成浸出。