Yintoni eyona nto ibalulekileyo isitena se-silica

I-acidic refractory material ikakhulu yenziwe nge-tridymite, i-cristobalite kunye nenani elincinci le-quartz eseleyo kunye nesigaba seglasi.

Umxholo we-silica ungaphezulu kwe-94%. Ubuninzi bokwenyani yi-2.35g/cm3. Inokumelana nokukhukuliseka kwe-asidi slag. Amandla aphezulu obushushu obuphezulu. Iqondo lobushushu lokuqala lokuthamba komthwalo yi-1620℃～1670℃. Ayinakonakala emva kokusetyenziswa kwexesha elide kwiqondo lobushushu eliphezulu. Ukuzinza okuphantsi kwe-thermal shock (i-1 ~ 4 amaxesha okutshintshana kobushushu emanzini) I-silica yendalo isetyenziswe njengento eluhlaza, kwaye inani elifanelekileyo le-mineralizer liyongezwa ukukhuthaza ukuguqulwa kwe-quartz kumzimba oluhlaza kwi-phosphorite. Ukudubula kancinane kwi-1350℃ 1430℃ ekunciphiseni umoya. Xa kushushu kwi-1450 ℃, kuya kubakho malunga ne-1.5 ~ 2.2% yokwandiswa komthamo opheleleyo. Oku kwandiswa okushiyekileyo kuya kwenza amajoyina anqunywe ngokuqinileyo kwaye aqinisekise ukuba i-masonry inomoya omhle wokuqina kunye namandla okwakhiwa.