Cov khib nyiab Acid Recovery System (feem ntau hydrofluoric acid) siv qhov sib txawv ntawm cov khoom pov tseg cov kua qaub. Los ntawm ob sab atmospheric siab nruam distillation txheej txheem nrog kev tswj cov txheej txheem, tag nrho cov txheej txheem rov qab ua haujlwm nyob rau hauv qhov kaw, tsis siv neeg kaw lus nrog kev nyab xeeb siab, ua tiav tus nqi rov qab siab.