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    Method for producing nanometer lithopone from electrolytic zinc acid leaching residue
    1.
    发明授权
    Method for producing nanometer lithopone from electrolytic zinc acid leaching residue 有权
    从电解锌酸浸渣中制备纳米立德粉的方法

    公开(公告)号：US09346934B2

    公开(公告)日：2016-05-24

    申请号：US14430550

    申请日：2012-09-25

    Applicant: SICHUAN XINHONG TECHNOLOGY CO., LTD.

    Inventor： Shangquan Chen ,  Shichun Li ,  Xiaohong Li

    IPC: C08K3/30 ,  B82Y40/00 ,  C01G9/08 ,  C09C1/06

    CPC classification number: C08K3/30 ,  B82Y40/00 ,  C01G9/08 ,  C01P2004/64 ,  C08K2003/3036 ,  C08K2003/3045 ,  C09C1/06 ,  Y02P20/582

    Abstract: Disclosed is a method for producing nanometer lithopone from electrolytic zinc acid leaching residue. The method comprises specific steps of: leaching, purifying, carrying out a metathetical reaction, washing, smashing and the like. Through these steps, zinc is selectively leached out by an ammonia-ammonium sulfate process; and iron and arsenic are removed by ammonium persulfate, heavy metal elements such as nickel, copper, lead, cadmium and the like are removed by sulfurization method and zinc powder replacement method; and a metathetical reaction is carried out to obtain an nZnS—BaSO4 crystalline filter cake, the crystalline filter cake is dried and smashed to obtain a nanometer lithopone product. The zinc in the acid leaching residue can be recycled effectively by this method. The ammonia leaching method is used as the technical means of effectively treating the acid leaching residue, the obtained lithopone product is good in quality, and sulfate radicals needed in the production are provided by the acid leaching residue itself, so that the resource utilization of the acid leaching residue is implemented; and in addition, the production cost is low, and the operation is simple.

    Abstract translation: 公开了一种从电解锌酸浸出渣中制备纳米立德粉的方法。 该方法包括：浸出，净化，进行微量反应，洗涤，粉碎等的具体步骤。 通过这些步骤，锌通过氨 - 硫酸铵方法选择性地浸出; 通过硫酸铵除去铁和砷，通过硫化法和锌粉替代法除去重金属元素如镍，铜，铅，镉等; 并进行微观反应以获得nZnS-BaSO 4结晶滤饼，将结晶滤饼干燥并粉碎，得到纳米立德粉产品。 酸浸渣中的锌可以通过这种方法有效回收。 使用氨浸法作为有效处理酸浸渣的技术手段，得到的立德粉产品质量好，生产中所需的硫酸根自身由酸浸渣本身提供，使资源利用 实施酸浸渣; 另外生产成本低，操作简单。

    Preparation of crystalline sulfides and selenides of cadmium zinc and mercury
    3.
    发明授权
    Preparation of crystalline sulfides and selenides of cadmium zinc and mercury 失效
    镉锌和汞的晶体硫化物和硒化物的制备

    公开(公告)号：US3852404A

    公开(公告)日：1974-12-03

    申请号：US30002872

    申请日：1972-10-24

    Applicant: HERCULES INC

    Inventor： DALY J

    IPC: C01B19/00 ,  C01B19/04 ,  C09C1/06 ,  C09C1/10 ,  C09C1/12 ,  C09C1/38 ,  C01G9/08 ,  C01B17/00

    CPC classification number: C09C1/10 ,  C01P2002/30 ,  C01P2002/70 ,  C09C1/06 ,  C09C1/12 ,  C09C1/38

    Abstract: Well-ordered hexagonal crystalline forms of the sulfides, selenides or solid solutions of the sulfides and selenides of cadmium, zinc or mercury are produced by treating crude, amorphous precipitates of the sulfides, selenides or mixtures of sulfides and selenides with aqueous ammonium sulfide. The crystalline cadmium sulfide-containing precipitates are particularly useful as pigments.

    Abstract translation: 通过用硫化铵，硒化物或硫化物和硒化物与硫化铵水溶液的混合物处理粗的无定形沉淀物，可以制备硫酸盐，硒化物或硫化镉，硒化物的硫化物，硒化物或硒化物的六维结晶形式。 含结晶硫化镉沉淀物特别可用作颜料。

    Inorganic white pigments containing optical brighteners and process for their manufacture
    4.
    发明授权
    Inorganic white pigments containing optical brighteners and process for their manufacture 失效
    含有光学增亮剂的无机白色及其制造方法

    公开(公告)号：US3669896A

    公开(公告)日：1972-06-13

    申请号：US3669896D

    申请日：1969-12-02

    Applicant: CIBA GEIGY AG

    Inventor： PREININGER ERICH ,  GING DIETER

    IPC: C08K13/02 ,  C09C1/06 ,  C09C1/36 ,  C09C3/00 ,  D21H17/69 ,  C09K1/02

    CPC classification number: D21H17/69 ,  C01P2002/52 ,  C08K13/02 ,  C09C1/06 ,  C09C1/3661 ,  C09C3/006 ,  C09C3/063 ,  C09C3/08

    Abstract: The invention concerns a process for the manufacture of inorganic white pigments containing optical brighteners, characterized in that, in an aqueous suspension of an inorganic white pigment which contains a dispersion of at least one optical brightener which is sparingly soluble in water, dispersed by means of non-ionic surface-active agents, property-improving auxiliary substances for such pigments are precipitated or adsorbed on these pigments in a manner which is in itself known by admixing the property-improving auxiliary or admixing the components for the formation of such a property-improving auxiliary if several components for its formation are necessary, and the pigments treated in such manner are separated from the aqueous phase, washed and dried. The invention provides a valuable method for homogeneously distributing optical brightening agents in combination with white pigments in plastics.

    Abstract translation: 本发明涉及一种制造含有荧光增白剂的无机白色颜料的方法，其特征在于在无机白色颜料的水性悬浮液中，其含有至少一种微溶于水的荧光增白剂的分散体，其通过以下方式分散： 非离子表面活性剂，用于这些颜料的性能改进助剂为这些颜料的沉淀或吸附，其本身是通过混合改性助剂或混合用于形成这种性能的助剂， 如果需要形成几种成分，则改善助剂，并且以这种方式处理的颜料与水相分离，洗涤并干燥。 本发明提供了将荧光增白剂与塑料中的白色颜料组合均匀分布的有价值的方法。

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