Bambanci tsakanin yumbu refractory tubalin da tubalin silica refractory a aikace

Tubalin yumbu suna da kwanciyar hankali mai kyau na zafi da ƙarancin farashi, amma aikin zafin zafin su ba shi da kyau. Zazzabi na dogon lokaci da ake amfani da shi bai wuce digiri 1300 ba, kuma ana amfani da su sosai a cikin ƙananan zafin jiki na kilns daban-daban.

Zazzabi mai laushi na tubalin siliki yana kusa da wurin narkewa, kuma ƙarfin zafin jiki yana da girma. Ana iya amfani da shi na dogon lokaci a ƙarƙashin babban zafin jiki (fiye da digiri 1400), amma yana da mummunan juriya ga lalata alkali, kuma yana da mafi munin yanayin zafi na zafi. Ana amfani da tubalin siliki gabaɗaya a cikin tanda na coke da kiln gilashi.