Browsing by Autor "Yang Jian-zhong"

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    Approaches to raise phosphorus recovery in production of dihydrate phosphoric acid
    (2008) Yang Jian-zhong
    The phosphorus loss of WPA production by the dihydrated phosphogypsum process is simply discussed.To improve recovery rate,the technical approaches such as reducing the phosphoric acid concentration in reactor properly,the second scrubbing and filtration about phosphogypsum and reusing acidic water entirely are advanced,and the reasons combined with the basic chemical theories are described.
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    Technical measures to cope with dilution of phosphate deposit for WPA enterprises
    (2007) Yang Jian-zhong
    The effects of diluting phosphate rock on the production of WPA is simply discussed and some technical countermeasures for diminishing the adversity:chemical Mg removal treatment before wet milling,cyclone separation of phosphogypsum before filtering,adding phosphate rock powder into diluted phosphoric acid,yielding extra phosphorus.