Selective recovery of lanthanum from magnesium
The milling speed and time are the main factors that determine whether H 3 PO 4 can be stably loaded on the kaolin. The milling speed and time are too low to load H 3 PO 4 onto kaolin, and too high milling speed and time will destroy the structure of kaolin, resulting in complete immobilization of free H + in H 3 PO 4, which cannot be exchanged.Web
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