Process for the precipitation and separation of cadmium sulphide from
the raffinates derived from phosphoric acid purification
    2.
    发明授权
    Process for the precipitation and separation of cadmium sulphide from the raffinates derived from phosphoric acid purification 失效
    从磷酸净化得到的残液中沉淀和分离硫化镉的方法

    公开(公告)号:US4762692A

    公开(公告)日:1988-08-09

    申请号:US13885

    申请日:1987-02-12

    CPC分类号: C01B25/461 C01B25/462

    摘要: Disclosed is a process for the precipitation and separation of cadmium sulphide from the raffinates derived from phosphoric acid purification by treating the cadmium containing streams of the raffinates with a H.sub.2 S containing solvent phase in a mixing-settling apparatus, by separating the raffinate phase from the cadmium sulphide containing solvent phase and by separating the precipitated cadmium sulphide from the solvent phase. By operating this process it is possible to remove cadmium in a simple manner from the raffinates since their inherent properties don't influence the precipitation and separation of cadmium sulphide.

    摘要翻译: 本发明公开了一种通过在混合沉淀装置中通过用含硫化氢溶剂相处理含有镉的萃余液的流,通过将萃余液相与镉分离而从硫酸镉纯化中提取的残渣中沉淀和分离硫化镉的方法 含硫化物溶剂相,并将沉淀的硫化镉与溶剂相分离。 通过操作该方法,可以以简单的方式从萃余液中除去镉,因为其固有的性质不影响硫化镉的沉淀和分离。

    Method for making phenol-formaldehyde resins flame-resistant
    4.
    发明授权
    Method for making phenol-formaldehyde resins flame-resistant 失效
    制造苯酚 - 甲醛树脂的方法是阻燃的

    公开(公告)号:US5607990A

    公开(公告)日:1997-03-04

    申请号:US211432

    申请日:1994-07-11

    CPC分类号: C08G8/28

    摘要: In the method described, one or more halogen-free phosphorus compounds are incorporated in the precondensed resins before the final resin-curing stage. During final curing, the phosphorus compounds are bound by covalent bonds into the resin structure and/or are trapped in the resin structure as such or in the form of aggregates or condensates.

    摘要翻译: PCT No.PCT / EP92 / 02320 Sec。 371日期:1994年7月11日 102(e)日期1994年7月11日PCT提交1992年10月8日PCT公布。 公开号WO93 / 07192 日期1994年4月15日在所述方法中,在最终树脂固化阶段之前,将一种或多种无卤磷化合物引入预稠化树脂中。 在最终固化期间,磷化合物通过共价键结合到树脂结构中和/或以这种形式或以聚集体或冷凝物的形式被捕获在树脂结构中。

    Method of producing soft cheese
    7.
    发明授权
    Method of producing soft cheese 失效
    生产软奶酪的方法

    公开(公告)号:US4609553A

    公开(公告)日:1986-09-02

    申请号:US690053

    申请日:1985-01-09

    CPC分类号: A23C19/082

    摘要: A process for producing soft cheese is disclosed wherein insoluble calcium phosphate having a CaO/P.sub.2 O.sub.5 ratio from 2.5:1 to 3.1:1 is added to conventional smelt salts in amounts of between 0.3 and 1.6 percent, based on raw cheese and fat. The calcium phosphate has a beta-tricalcium phosphate content of from 50 to 100 percent and, preferably, a specific surface of from 20 to 80 m.sup.2 /g and an average grain size of from 1 to 20/.mu..

    摘要翻译: 公开了一种生产软奶酪的方法,其中CaO / P 2 O 5比为2.5:1至3.1:1的不溶性磷酸钙以常规熔融盐的量加入到基于生奶酪和脂肪的0.3至1.6%之间。 磷酸钙的β-磷酸三钙含量为50〜100%,优选比表面积为20〜80m2 / g,平均粒径为1〜20 /μm。

    Process for the extractive purification of phosphoric acid containing
cationic impurities
    8.
    发明授权
    Process for the extractive purification of phosphoric acid containing cationic impurities 失效
    含有阳离子杂质的磷酸的提取纯化方法

    公开(公告)号:US4018869A

    公开(公告)日:1977-04-19

    申请号:US575639

    申请日:1975-05-08

    IPC分类号: C01B25/234 C23G1/36 C01B25/16

    CPC分类号: C23G1/36 C01B25/234

    摘要: A process for the purification of phosphoric acid containing cationic impurities is disclosed wherein there is added to a crude phosphoric acid an organic solvent miscible in all proportions with water and phosphoric acid and thereafter contacting the resulting solution with an inorganic material in aqueous or solid form to effect the preferential passage of the impurities of the crude phosphoric acid/organic solvent solution into an aqueous inorganic phase with phosphoric acid remaining in the organic solvent phase from which purified phosphoric acid is recovered by distillation of the organic solvent.

    摘要翻译: 公开了一种用于纯化含有阳离子杂质的磷酸的方法,其中向粗磷酸中加入与水和磷酸以所有比例混溶的有机溶剂,然后使所得溶液与水或固体形式的无机材料接触, 将磷酸残留在有机溶剂相中,通过蒸馏有机溶剂回收纯化的磷酸,使粗磷酸/有机溶剂溶液的杂质优先通过。