Njira yothira madzi imatchedwanso njira yonyowa, ndipo zinthu zazikulu zopangira ndi mchenga wa quartz, phulusa la soda, hydrochloric acid ya mafakitale kapena sulfuric acid kapena nitric acid kapena carbon dioxide. Njira yogwiritsira ntchito nthawi zambiri ndi iyi: kugwiritsa ntchito koyamba mafuta amafuta kapena malasha apamwamba kwambiri pa kutentha kwakukulu kwa mchenga wa quartz ndi phulusa la soda kuti apange galasi lamadzi la mafakitale, galasi lamadzi la mafakitale limakonzedwa kukhala yankho linalake losungunuka, kenako pansi pa mikhalidwe ina kuti liwonjezere asidi, kuti silika ituluke, kenako pambuyo poyeretsa, kusefa, kuumitsa (kuumitsa kapena kupopera), kupukuta, kupanga kaboni woyera wakuda. Njira yothira madzi imagawidwa m'njira ya asidi, njira ya sol, njira ya carbonization ndi njira zambiri zosiyanasiyana.

(1) Njira ya asidi

Kawirikawiri, njira ya asidi ndi kuchitapo kanthu ndi soluble silicate ndi sulfuric acid (kapena ma acid ena), pamene madzi a reaction afika pamtengo winawake, siyani acid reaction, ukalamba, kenako sefa ndikutsuka ndi madzi mobwerezabwereza, chotsani Na2S04, tumizani youma, yophwanyika kuti mupeze mankhwalawo.

(2) Njira ya Sol

Iyi imaonedwa kuti ndi njira yabwino yochitira zinthu, koma njira imeneyi ndi yovuta kwambiri kuposa njira ya asidi, ndipo zofunikira pakuwongolera momwe zinthu zilili ndi zapamwamba. Choyamba, hydrochloric acid ndi sodium silicate zimayankha kuti zipange kuchuluka kwa sol diluted, pansi pa kutentha pang'ono ndi kusakaniza, yankho lochepetsedwa la sodium silicate limawonjezeredwa ku sol yokonzedwa, ndipo kuchuluka kwa yankho la NaC1 kumawonjezeredwa kuti ligwirizane ndi pH=7~8, ndipo H value imasungidwa ndi alkaline regulator, kusunga kutentha ndi kukalamba, kenako kutsukidwa kuti kuchotse chlorine, kenako kusefedwa, kuumitsa ndikupakidwa.

(3) Njira yopangira kaboni

Mu njira iyi, mpweya wa carbon dioxide umasinthidwa kukhala kaboni pogwiritsa ntchito njira yosungunula ya silicate kuti apange Si02 yokhazikika ndi sodium carbonate. Pambuyo poti yankho latha, chinthucho chimasefedwa kale, ndipo Na2C03 imachotsedwa ndi njira yamadzimadzi ya acid, kenako imasefedwa, imaumitsidwa, imaphwanyidwa ndikupakidwa.