RAW MATERIAL OF COMPOSITE PELLETS USED IN KILN PHOSPHORIC ACID PROCESS, AND FORMING METHOD THEREFOR
    85.
    发明申请
    RAW MATERIAL OF COMPOSITE PELLETS USED IN KILN PHOSPHORIC ACID PROCESS, AND FORMING METHOD THEREFOR 审中-公开
    在磷酸工艺中使用的复合颗粒的原料及其形成方法

    公开(公告)号:US20160152473A1

    公开(公告)日:2016-06-02

    申请号:US14958903

    申请日:2015-12-03

    Abstract: Disclosed is a composite pellet used as a raw material in a kiln process for the production of phosphoric acid, which is of a core-shell structure with an inner ball encapsulated with a shell, the inner ball mainly consists of a inner ball material and a binding agent, and the shell mainly consists of a cladding material and a binding agent; the inner ball material mainly consists of a carbonaceous reductant powder, and phosphate ore powder and silica powder, the inner ball is combined with the shell through the binding agent to form the core-shell shaped structure. The preparation of the composite pellets comprises the steps of preparing the inner ball, preparing the cladding material, forming, drying and solidifying composite green pellets etc. The composite pellets prepared by the present invention have a smaller range of formulation fluctuation, more stable quality, higher strength and better performance.

    Abstract translation: 公开了一种用于生产磷酸的窑工艺中的原料的复合颗粒,其是具有用壳包裹的内球的核 - 壳结构,内球主要由内球材料和 结合剂,壳主要由包层材料和粘合剂组成; 内球材料主要由碳质还原剂粉末和磷酸盐矿石粉末和二氧化硅粉末组成,内球通过粘合剂与壳体结合形成核 - 壳形结构。 复合颗粒的制备包括制备内球,制备包层材料,形成,干燥和固化复合生球团矿等的步骤。由本发明制备的复合颗粒具有较小的制剂波动范围,更稳定的质量, 强度更高,性能更好。

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