Zeziphi iintlobo ze i-silica alumina izitena eziphikisayo zibandakanyiwe?

(1) Izitena ze-Silica: zibhekisela kwizitena eziphikisayo eziqukethe ngaphezu kwe-293% yeSiO, kwaye zezona ntlobo ziphambili zezitena ze-acid refractory. Isetyenziselwa ikakhulu ukwakha ii-oveni ze-coke, kwaye ikwasetyenziselwa iivaults kunye nezinye iindawo ezithwele imithwalo ye-thermal kilns ezahlukeneyo zeglasi, iiseramikhi, i-carbon calciners, kunye nezitena ezilahlayo. Kwakhona kusetyenziswe kwiindawo ezithwala imithwalo ephezulu yokushisa izitofu ezitshisayo, kodwa zingasetyenziswanga kwisixhobo esishushu esingaphantsi kwe-600 ° C kunye nokuguquka okukhulu kweqondo lokushisa.

(2) Izitena zodongwe: Izitena zodongwe ubukhulu becala zenziwe nge-mullite (25% -50%), isigaba seglasi (25% -60%), icristobalite kunye nequartz (ukuya kuma-30%). Ngokuqhelekileyo udongwe oluqinileyo lusetyenziswa njengento ekrwada, izinto ezivuthiweyo zi-calcined ngaphambili, emva koko zixutywe nodongwe oluthambileyo, olwenziwa ngendlela eyomileyo okanye yeplastiki, kwaye iqondo lokushisa yi-1300 ~ 1400 C ukutshisa iimveliso zezitena zodongwe. Ungongeza kwakhona ixabiso elincinci leglasi yamanzi, i-samente kunye nezinye izibophelelo ukwenza iimveliso ezingatshiyo kunye nezixhobo ze-amorphous. Sisitena esilahlayo esiqhele ukusetyenziswa kwizitovu eziqhumayo, izitovu ezitshisayo, izitofu zokufudumeza, iibhoyila zombane, iikilni zekalika, iitoti ezijikelezayo, iiseramikhi kunye neetoni zokutshiza zezitena.

(3) Izitena eziphezulu ze-alumina eziphikisayo: Ukwakhiwa kweeminerali zezitena eziphezulu ze-alumina refractory yi-corundum, i-mullite kunye nesigaba seglasi. Umxholo wayo uxhomekeke kumlinganiselo we-AL2O3 / SiO2 kunye nohlobo kunye nobuninzi bokungcola. Izitena eziphikisayo zingahlelwa ngokuhambelana nomxholo we-AL2O3. Izinto eziluhlaza ziphezulu ze-alumina bauxite kunye ne-sillimanite ores yendalo, kunye nezo zixutywe kunye ne-corundum edibeneyo, i-alumina e-sintered, i-synthetic mullite, kunye ne-clinker calcined nge-alumina kunye nodongwe ngokwemilinganiselo eyahlukeneyo. Iveliswa kakhulu yindlela ye-sintering. Kodwa iimveliso zikwabandakanya izitena ezidityanisiweyo, izitena ezidibeneyo, izitena ezingatshiswanga kunye nezitena ezingagungqiyo. Izitena eziphezulu ze-alumina refractory zisetyenziswa ngokubanzi kwi-industry yensimbi, i-metal industry non-ferrous metal kunye namanye amashishini.

(4) Isitena esinqandayo se-Corundum: Isitena se-Corundum sibhekisela kuhlobo lwesitena se-refractory kunye nomxholo we-AL2O3 ongekho ngaphantsi kwe-90% kunye nesigaba esiphambili se-corundum. Inokwahlulwa ibe sisitena se-corundum edibeneyo kunye nezitena ezidibeneyo ze-corundum.