This article discusses the production of forage calcium hydrophosphate from sludge phosphoric acid.
研究了一种用贵州省丰富的泥磷酸生产饲料磷酸氢钙的方法。
Twice technology reforms and the structure of main equipment for the recovery of chromic acid sludge by phosphoric acid method are described.
介绍该厂铬盐车间利用磷酸法对铬酸渣回收利用的两次技术改造及主要设备的结构，以供同行业厂家参考。
Another part of limpid phosphoric acid after removing subsiding sludge was concentrated and neutralized to produce granular DAP.
另一部分沉出淤渣的清澈磷酸经浓缩后再中和制磷酸二铵。
Another part of limpid phosphoric acid after removing subsiding sludge was concentrated and neutralized to produce granular DAP.
另一部分沉出淤渣的清澈磷酸经浓缩后再中和制磷酸二铵。
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