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    METHOD FOR PREPARING HIGH-PURITY ELEMENTAL PHOSPHORUS AND METHOD FOR PREPARING HIGH-PURITY PHOSPHORIC ACID
    41.
    发明申请
    METHOD FOR PREPARING HIGH-PURITY ELEMENTAL PHOSPHORUS AND METHOD FOR PREPARING HIGH-PURITY PHOSPHORIC ACID 有权
    制备高纯度磷酸盐的方法和制备高纯度磷酸的方法

    公开(公告)号：US20120009112A1

    公开(公告)日：2012-01-12

    申请号：US13179882

    申请日：2011-07-11

    申请人： Yutaka Kinose ,  Toru Hata ,  Mari Aikawa

    发明人： Yutaka Kinose ,  Toru Hata ,  Mari Aikawa

    IPC分类号： C01B25/20 ,  C01B25/04

    CPC分类号： C01B25/02 ,  C01B25/04 ,  C01B25/20

    摘要： Provided is a method for preparing high-purity elemental phosphorus capable of simultaneously reducing both arsenic and antimony from crude white phosphorus containing a great amount of arsenic and antimony as impurities.Provided is a method for preparing high-purity elemental phosphorus, the method including bringing liquid crude white phosphorus into contact with an iodic acid-containing compound selected from iodic acid and iodates in an aqueous solvent in the presence of a chelating agent, wherein the chelating agent is selected from polyvalent carboxylic acids, polyvalent carboxylates, phosphonic acid and phosphonates.

    摘要翻译： 本发明提供一种能够同时从含有大量砷和锑作为杂质的粗白磷中同时还原砷和锑的高纯度元素磷的方法。 本发明提供一种制备高纯度元素磷的方法，其特征在于，在螯合剂的存在下，在含水溶剂中使液态粗白磷与选自碘酸和碘酸盐的含碘酸化合物接触， 试剂选自多价羧酸，多价羧酸酯，膦酸和膦酸酯。

    A PROCESS FOR TOTAL ENVIRONMENTAL REMEDIATION OF A PHOSPHORUS CONTAMINATED SITE
    42.
    发明申请
    A PROCESS FOR TOTAL ENVIRONMENTAL REMEDIATION OF A PHOSPHORUS CONTAMINATED SITE 有权
    磷污染场地总体环境修复工艺

    公开(公告)号：US20040241073A1

    公开(公告)日：2004-12-02

    申请号：US10249995

    申请日：2003-05-27

    申请人： GLENN SPRINGS HOLDINGS, INC.

    发明人： Mohan Singh Saran ,  George Walter Luxbacher

    IPC分类号： C01B025/01

    CPC分类号： B09C1/02 ,  C01B25/01 ,  C01B25/02 ,  C02F1/5281 ,  C02F1/56 ,  C02F9/00 ,  C02F11/121 ,  C02F2101/105 ,  C02F2103/10 ,  C22B3/44 ,  C22B7/006 ,  Y02P10/214 ,  Y02P10/23 ,  Y02P10/234 ,  Y10S210/908

    摘要： A process is disclosed for recovering elemental phosphorus from an aqueous sludge and converting the residue into non-hazardous waste. The sludge is separated into (1) a slurry of water containing suspended phosphorus and dirt particles and (2) coarse solids. A flocculating agent is added to the slurry to agglomerate the suspended phosphorus and dirt particles, which are recovered from the water and are heated to melt elemental phosphorus particles. A coalescing agent is added to coalesce the melted elemental phosphorus, which is separated from the dirt particles. The coarse solids are mixed with hot water to melt the phosphorus sludge, which is separated from inert solids. The solids are heated to burn any residual elemental phosphorus. The separated molten phosphorus sludge is stirred with a solution of chromic acid to recover the phosphorus as a separate phase. A reducing agent is added to the remaining water and solids to reduce the Crnull6 to Crnull3. Finally, an alkali is added to the water and solids to react the residual phosphorus and form phosphorous compounds. The reaction mass is filtered and the filter cake can be placed in a landfill as a non-hazardous waste.

    摘要翻译： 公开了从含水污泥中回收元素磷并将残余物转化为无害废物的方法。 污泥被分离成（1）含有悬浮磷和污垢颗粒的水的浆液和（2）粗固体。 将絮凝剂加入到浆料中以使悬浮的磷和污垢颗粒聚集，这些颗粒从水中回收并被加热以熔化元素磷颗粒。 加入聚结剂以使​​熔融的元素磷与污垢颗粒分离。 将粗固体与热水混合以熔化与惰性固体分离的磷污泥。 将固体加热以烧制任何残留的元素磷。 将分离的熔融磷污泥与铬酸溶液一起搅拌以回收磷作为分离相。 将还原剂加入到剩余的水和固体中以将Cr +6还原成Cr +3。 最后，向水和固体中加入碱以使残余的磷反应形成磷化合物。 将反应物质过滤并将滤饼作为无害废物放置在垃圾填埋场中。