前言湿法生产氟化铝,无论是以氟氢酸还是硅氟酸为原料,其母液中均含有大量的氟和铝。其浓度为:F18～30克/升;Al6～8克/升。每吨氟化铝产品的母液量约为2～6米~3。因此,回收氟化铝母液中的氟和铝是改进湿法氟化铝工艺的重要一环。以氟氢酸为原料的氟化铝生产工艺来说,目前国内有两种回收方法,都是利用氟化铝母液来生产冰晶石。所得产品质 Preface Wet production of aluminum fluoride, whether hydrogen fluoride or hydrofluoric acid as raw material, the mother liquor contains a lot of fluorine and aluminum. Its concentration: F18 ~ 30 g / L; Al6 ~ 8 g / L. The amount of mother liquor per ton of aluminum fluoride product is about 2 ~ 6 m ~ 3. Therefore, the recovery of fluorine and aluminum in the aluminum fluoride mother liquor is an important part of improving the wet process of aluminum fluoride. For the production process of aluminum fluoride with hydrogen fluoride as raw material, there are currently two recovery methods in China, all of which use aluminum fluoride mother liquor to produce cryolite. The resulting product quality