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    Apparatus for producing potassium silicate fertilizer
    101.
    发明授权
    Apparatus for producing potassium silicate fertilizer 失效
    生产硅酸钾肥料的设备

    公开(公告)号：US4293523A

    公开(公告)日：1981-10-06

    申请号：US177698

    申请日：1980-08-12

    申请人： Hiroshi Segawa ,  Katsufumi Akizuki

    发明人： Hiroshi Segawa ,  Katsufumi Akizuki

    IPC分类号： C05D1/00 ,  B01J6/00 ,  B01J8/24 ,  B01J8/26 ,  F27B15/08

    CPC分类号： C05D1/00 ,  Y02P20/129

    摘要： A process for producing a citric acid soluble potassium silicate fertilizer comprises a step for kneading a mixture consisting essentially of potassium carbonate, fly ash, pulverized coal, other necessary starting materials and a caustic potash solution as a binder and then granulating the kneaded mixture, a step for drying the granulated product to a nearly absolutely dry state, and a step for calcining the dried granular product, whereby a chemical reaction takes place between the potassium and the silicon present in fly ash to convert them into a citric acid soluble potassium silicate. A process according to a second embodiment comprises a step for kneading a mixture consisting essentially of a potassium source, such as potash and/or potassium carbonate, fly ash, other components necessary for the production of citric acid soluble potassium silicate fertilizer and a binder, such as alcoholic waste liquor or the like, and then granulating the kneaded mixture, a step for drying the kneaded mixture to a nearly absolutely dry state, and a step for calcining the dried granular product, whereby a chemical reaction takes place between the potassium and the silicic acid present in fly ash to form a citric acid soluble potassium silicate. An apparatus for practicing the processes mentioned above comprises a plurality of continuous quantitative feeders, a continuous kneader, an extruder for forming granules, a fluid dryer, a fluid calcining furnace, and a cooling device for cooling calcined product.

    摘要翻译： 柠檬酸可溶性硅酸钾肥料的制造方法包括将基本上由碳酸钾，飞灰，粉煤，其他必需的起始原料和苛性钾溶液混合的混合物作为粘合剂，然后造粒混炼物的步骤， 将造粒产物干燥至几乎绝对干燥的步骤，以及煅烧干燥的粒状产物的步骤，由此在飞灰中存在的钾和硅之间发生化学反应，将其转化成柠檬酸可溶性硅酸钾。 根据第二实施方案的方法包括用于捏合基本上由钾源如钾盐和/或碳酸钾组成的混合物，飞灰，生产柠檬酸可溶性硅酸钾肥料所需的其它组分和粘合剂的步骤， 例如酒精废液等，然后将捏合的混合物造粒，将捏合的混合物干燥至几乎绝对干燥的步骤，以及煅烧干燥的粒状产物的步骤，由此在钾和 存在于飞灰中的硅酸形成柠檬酸可溶性硅酸钾。 用于实施上述方法的装置包括多个连续定量给料器，连续捏合机，用于形成颗粒的挤出机，流体干燥器，流体煅烧炉和用于冷却煅烧产物的冷却装置。

    Method for producing nitrophosphate fertilizer
    102.
    发明授权
    Method for producing nitrophosphate fertilizer 失效
    硝基磷酸盐生产方法

    公开(公告)号：US3628940A

    公开(公告)日：1971-12-21

    申请号：US3628940D

    申请日：1969-01-02

    申请人： EXXON RESEARCH ENGINEERING CO

    发明人： GEISSLER PAUL R ,  MAGEE ELLINGTON M

    IPC分类号： C05B7/00 ,  C05B11/06

    CPC分类号： C05B7/00 ,  C05G1/00 ,  C05B11/06 ,  C05C1/00 ,  C05D1/02 ,  C05D1/00

    摘要： Process for treating calcium phosphate rock having a low fluorine content, with an amount of nitric acid, sufficient to produce an acidulation effluent comprising water-soluble products. The acidulation effluent is treated with a large excess of an ammonium carbonate material, the amount used being sufficient to produce water-soluble ammonium nitrate and phosphate in solution, and a precipitate of calcium carbonate, the solution from which the precipitate is removed being processed to obtain a nitrophosphate fertilizer.