Kusiyana kwealumina yakakwirira zvidhinha zvinopesana

Pakati pealuminosilicate refractory zvinhu, yakakwirira alumina refractory zvidhinha zvine yakakwirira refractoriness. Sezvo zvirimo zveAl2O3 muchigadzirwa zvichiwedzera, iyo refractoriness inowedzera, kazhinji haina kuderera pane 1750 ℃～1790 ℃. Kana iyo alumina yemukati yakakura kupfuura 95%, iyo refractoriness inogona kunge yakakwira se1900 ℃～2000 ℃.

Nekuwedzera kweSiO2 uye simbi oxides, tembiricha yekunyorovesa yealumina yakakwira zvidhinha inodzikira. Iyo tembiricha yekunyorovesa yemutoro yeyakajairwa yakakwira alumina zvidhinha ndeye 1420 ℃～1530 ℃. Iko kunyorovesa tembiricha yezvigadzirwa zvecorundum ine Al2O3 yemukati yakakura kupfuura 95% iri pamusoro pe1600 ℃.

High alumina refractory zvidhinha zvine basa rekupikisa siyana slags. Nekuda kweiyo yakakwira yeAl2O3 muchigadzirwa uye kusarerekera kwayo, ine yakasimba corrosion resistance kune acid uye alkali slag.

High alumina refractory zvidhinha zvine thermal shock resistance. Corundum uye mullite makristasi aripo, uye mutsara wekuwedzera coefficient ye corundum yakakura kupfuura iyo mullite. Naizvozvo, kana tembiricha yakwira, mutsauko wekuwedzera wechigadzirwa unokonzeresa kusagadzikana. Nokudaro, kupikisa kwekushisa kwekupisa kwezvidhinha zvakakwirira zvealuminium hazvina kunaka, uye nhamba yemvura inotonhorera inongova 3 kusvika ku5 nguva.