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    Production of potassium polyphosphates from phosphate acid sludges
    43.
    发明授权
    Production of potassium polyphosphates from phosphate acid sludges 失效
    从磷酸盐渣中生产多磷酸钾

    公开(公告)号：US3770410A

    公开(公告)日：1973-11-06

    申请号：US3770410D

    申请日：1971-09-10

    申请人： OCCIDENTAL PETROLEUM CORP

    发明人： MILLS H ,  CAESAR M

    IPC分类号： C01B25/41 ,  C05B13/06 ,  C05B7/00

    CPC分类号： C05B13/06 ,  C01B25/41

    摘要： Phosphate acid sludges formed in the production of wet process phosphoric acids are converted to potassium polyphosphates by reaction with a potassium salt at elevated temperatures. Sodium salts may be introduced to reduce the fusion temperature and magnesium compounds with an increase in fusion temperature; the reaction system will also accept a variety of micronutrients. The potassium polyphosphate product formed has a high degree of citrate solubility establishing its excellent utility as a fertilizer.

    摘要翻译： 在湿法磷酸生产中形成的磷酸淤渣通过在高温下与钾盐反应而转化为多磷酸钾。 可以引入钠盐以降低融合温度和镁化合物随熔化温度的升高; 反应体系也将接受各种微量营养素。 所形成的多磷酸钾产品具有高度的柠檬酸盐溶解度，从而确定其作为肥料的优异效用。

    Process for making mixtures of sodium polyphosphates and sodium sulfate
    44.
    发明授权
    Process for making mixtures of sodium polyphosphates and sodium sulfate 失效
    制备聚磷酸钠和硫酸钠的混合物的方法

    公开(公告)号：US3684724A

    公开(公告)日：1972-08-15

    申请号：US3684724D

    申请日：1970-04-20

    申请人： STAUFFER CHEMICAL CO

    发明人： DYER JAMES N ,  POST LEO B ,  ROSEN HERBERT J

    IPC分类号： C01B25/41 ,  C11D3/00 ,  C11D3/06 ,  C01B25/38 ,  C11D7/16

    CPC分类号： C11D3/062 ,  C01B25/412 ,  C11D3/046

    摘要： MIXTURES OF SODIUM SULFATE AND SODIUM POLYPHOSPHATES, PARTICULARLY, SODIUM TRIPOLYPHOSPHATES ARE PREPARED IN LOW BULK DENSITY, HIGH RELATIVELY NON-FRANGIBLE, GRANULAR YIELDS BY SPRAY DRYING AN AQUEOUS SOLUTION OF MONOSODIUM/DISODIUM ORTHOPHOSPHATE SALTS HAVING AN NA2O:P2O5 RATIO OF FROM 1 TO 2, AND SODIUM IN COMBINATIONS OF 10% TO 90%, HYDRATING THE SPRAY DRIED PRODUCT OR THE FINES TO A LO1 OF BETWEEN ABOUT 10% AND ABOUT 50% AND INTERMOLECULARLY DEHYDRATING THE HYDRATED PRODUCT IN A FLUIDIZED CONVERTER AT A TEMPERATURE OF BETWEEN ABOUT 200*C. AND 500*C. TO PROVIDE THE DESIRED PRODUCT. THE PRODUCT OF THE PROCESS IS USEFUL AS A DETERGENT BUILDER.