Yaya game da wasan kwaikwayon yumbu refractory tubalin?

Tubalin ƙwanƙwasa ƙwanƙwasa su ne samfuran da ba su da ƙarfi na acidic, waɗanda za su iya tsayayya da yashwar acid slag da iskar acid, kuma suna da ƙarancin juriya ga abubuwan alkaline. Tubalin ƙwanƙwasa yumbu suna da kyawawan kaddarorin thermal kuma suna da juriya ga saurin sanyi da saurin zafi.

Wuta juriya na yumbu refractory tubalin ne daidai da na silica tubalin, kai 1690 ~ 1730 ℃, amma softening zafin jiki a karkashin kaya ne fiye da 200 ℃ kasa da na silica tubalin. Saboda bulogin yumbu ba wai kawai sun ƙunshi lu’ulu’u na mullite tare da babban refractoriness ba, har ma sun ƙunshi kusan rabin lokacin gilashin amorphous tare da ƙarancin narkewa.