冰晶石厂生产工业冰晶石的方法是,用硫酸分解萤石精矿,而后用水吸收HF气体,并制取含有28～30％HF、3～5％H_2SiF_6和1～2％H_2SO_4的粗酸。所得粗酸用碱液除去硅化合物,精制后的精酸中H_2SiF_6的含量不得高于1％,以免硅 The cryolite plant produces cryolite in industrial form by decomposing fluorite concentrate with sulfuric acid and then absorbing HF gas with water and preparing a crude acid containing 28 to 30% HF, 3 to 5% H 2 SiF 6 and 1 to 2% H 2 SO 4. The resulting crude acid with a lye to remove silicon compounds, fine acid refined H_2SiF_6 content of not more than 1%, in order to avoid silicon