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    Production of red phosphorus
    2.
    发明授权
    Production of red phosphorus 失效
    生产红磷

    公开(公告)号：US5075088A

    公开(公告)日：1991-12-24

    申请号：US616749

    申请日：1990-11-19

    申请人： Edward J. Lowe ,  William S. Holmes

    发明人： Edward J. Lowe ,  William S. Holmes

    IPC分类号： C01B25/023

    CPC分类号： C01B25/023

    摘要： Amorphous red phosphorus useful for matches, or as flame retardant is made by forming a slurry of 10-45% red phosphorus in molten white phosphorus, reducing the content of yellow phosphorus to less than 20% of the red phosphorus by separation at less than 280.degree. C., and then heating the product at above 295.degree. C. to convert, and preferably also evaporate, the white phosphorus.

    摘要翻译： 通过在熔融的白磷中形成10-45％红磷的浆料，可以制成用于火柴或阻燃剂的无定形红磷，通过在小于280℃下分离将黄磷含量降低到小于红磷的20％ 然后在295℃以上加热该产物以转化并优选蒸发白色磷。

    Rock treatment process
    3.
    发明授权
    Rock treatment process 失效
    岩石处理工艺

    公开(公告)号：US4325928A

    公开(公告)日：1982-04-20

    申请号：US123687

    申请日：1980-02-22

    申请人： Edward J. Lowe

    发明人： Edward J. Lowe

    IPC分类号： C01B25/01 ,  C01B25/222 ,  C01B25/223 ,  C01B25/16

    CPC分类号： C01B25/223 ,  C01B25/01

    摘要： Phosphate rock can be heat treated at 380.degree.-600.degree. C. to convert the organics to filterable carbon and the rock converted to wet process phosphoric acid of reduced color and with reduced foaming. Rocks having high acid soluble organics but low total organics, and rocks containing a high content of acid insoluble heat labile iron sulphide are especially suitable.

    摘要翻译： 磷酸盐岩可以在380-600℃下进行热处理，将有机物转化为可过滤的碳，将岩石转化为湿法，减少发色的磷酸，减少发泡。 具有高酸溶性有机物但低总有机物的岩石和含有高含量的不溶于酸的不稳定硫化铁的岩石是特别合适的。

    Process for producing phosphorous acid
    4.
    发明授权
    Process for producing phosphorous acid 失效
    生产磷酸的方法

    公开(公告)号：US5085846A

    公开(公告)日：1992-02-04

    申请号：US685460

    申请日：1991-04-11

    申请人： Edward J. Lowe ,  William S. Holmes

    发明人： Edward J. Lowe ,  William S. Holmes

    IPC分类号： C01B25/163

    CPC分类号： C01B25/163

    摘要： Phosphorous acid is made by a continuous recycling process from a mixture of phosphorous and hydrochloric acids, comprising:(i) continuously recycling the mixture in a loop apparatus;(ii) adding water to and passing phosphorus trichloride into said recycling mixture so as to generate a condition of turbulent flow at the point of contact of the phosphorus trichloride and the recycling mixture, whereby a reaction product, comprising an aqueous solution of phosphorous and hydrochloric acids as a continuous liquid phase and gaseous hydrogen chloride as gas bubbles of disperse phase, is produced;(iii) separating said gaseous hydrogen chloride;(iv) cooling said reaction product; and(v) recycling at least a portion of said reaction product and repeating steps (ii), (iii) and (iv) thereon to produce a more highly concentrated solution of phosphorus acid.