Isitini somlilo se-silicon singokwezinto eziphikisayo ze-silicon, isitini se-silica siwuhlobo lwemikhiqizo yekhwalithi ye-refractory enokuqukethwe okungaphezulu kuka-93% we-SiO2. Isitini se-silicate refractory sinezici ezinhle kakhulu zokumelana nokugqwala kwe-asidi, ukushisa okukhulu, ukuqina okuphezulu ngaphansi komthwalo ongaphezu kuka-1620 ℃. kanye nezitini ze-silica zinokuqhekeka kokumelana nokuguguleka kwe-asidi ye-slag eqinile, i-refractoriness ephezulu ngaphansi komthwalo, kanye nokuzinza kwevolumu ekushiseni okuphezulu. I-silicon rerfractory brik isetshenziswa kakhulu kuhhavini we-coke, iziko elivulekile, ihhavini lengilazi, i-ceramic kiln, i-blast furnace, njll.