preliminary dilution (training) u0444u043bu043eu043au0443u043bu044fu043du0442u0430 for gypsum to obtain phosphoric acid filter followed by a u0444u0438u043bu044cu0442u0440u043eu0432u0430u043du0438u0435u043c phosphoric acid

摘要

a method of minimizing the addition of water in the process of phosphoric acid. in this way to cut u0444u043bu043eu043au0443u043bu044fu043du0442u0430 is in the process of using phosphoric acid to facilitate filter or lightening u043du0435u043eu0447u0438u0449u0435u043du043du043e in phosphoric acid.preferably, the phosphoric acid is a u043du0435u043eu0447u0438u0449u0435u043du043du0443u044e u043eu0441u0432u0435u0442u043bu0435u043du043du0443u044e phosphoric acid, which u0440u0435u0446u0438u043au043bu0438u0440u0443u044eu0442 from the process of phosphorus. the slots.