Silicofluoride acid radical of the mother liquor will be transformed into sodium silicofluoride if excess sodium chloride was added,and the mother liquor was refined.

• 其关键技术为氯化钠脱硅:投入过量氯化钠,使母液中氟硅酸根转化成副产品氟硅酸钠,母液被精制;