FIR system process:

The FIR system (preparation of cryolite from concentrated hydrofluoric acid waste liquid) quantitatively inputs hydrofluoric acid waste liquid and aluminum sodium reagent into the reactor in sequence to generate cryolite. After thorough stirring and complete reaction, the reaction solution is transported to a centrifuge for solid-liquid separation to obtain solid cryolite products. The centrifugal mother liquor is discharged as fluorine-containing wastewater into the chemical mixing system of the wastewater treatment plant for treatment and discharge after meeting standards.