Wata hanyar iskar gas{0}}hanyar lokaci, hanyar tara tururi (CAV), wanda kuma aka sani da hanyar pyrolysis, hanyar bushewa ko hanyar konewa. Danyen kayan sa gabaɗaya su ne silicon tetrachloride, oxygen (ko iska) da hydrogen, waɗanda ke amsawa a yanayin zafi.
The reaction equation is: SiCl4+2H2+O2 - >SiO{0}HCl. Ana yin iska da hydrogen bi da bi don matsawa, rabuwa, sanyaya da bushewa, bushewar silica gel, cire ƙura da tacewa kafin a tura su cikin tanderun hydrolysis na roba. Bayan an aika da albarkatun siliki na tetrachloride zuwa ginshiƙin distillation don distillation, ana yin zafi kuma a fitar da shi a cikin evaporator, sa'an nan kuma aika zuwa tanderun hydrolysis na roba tare da bushe da tace iska a matsayin mai ɗaukar kaya. Silicon tetrachloride yana yin tururi a yanayin zafi mai zafi (jin zafi 1000{5}}1800 digiri) sannan kuma ya sha iskar gas{8}}lokacin hydrolysis tare da wani adadin hydrogen da oxygen (ko iska) a kusan digiri 1800. A wannan lokaci, barbashi na silica-lokacin gas da aka samar suna da kyau sosai kuma suna samar da iska mai iskar gas, waɗanda ke da wahalar kamawa.
Don haka, ana fara tattara su zuwa manyan ɓangarorin a cikin mai tarawa, sannan a tattara su ta hanyar mai raba guguwa, sannan a aika zuwa tanderun deacidification. Ana wanke gas ɗin silica na lokaci da nitrogen{2}mai ɗauke da iska har sai ƙimar PH ta kasance 4 zuwa 6, wanda shine ƙãre samfurin.