Iindidi ezisi-7 ze-Corundum Refractory Raw Materials edla ngokusetyenziswa kwiiRefractory Castables

01 Swatsho eCorundum
I-sintered corundum, ekwabizwa ngokuba yi-alumina e-sintered okanye i-semi-molten alumina, yi-clinker ephikisayo eyenziwe nge-alumina ye-calcined okanye i-alumina ye-industrial njengemathiriyeli ekrwada, igalelwe iibhola okanye imizimba eluhlaza, kwaye ifakwe kubushushu obuphezulu be-1750 ~ 1900 ° C.

I-alumina ye-Sintered equlethe ngaphezu kwe-99% ye-aluminium oxide ininzi yenziwe nge-uniform fine-grained corundum idityaniswe ngokuthe ngqo. Izinga lokukhutshwa kwegesi lingaphantsi kwe-3.0%, ubuninzi bevolumu bufikelela kwi-3.60% / cubic meter, i-refractoriness isondele kwindawo yokunyibilika kwe-corundum, inozinzo oluhle lomthamo kunye nokuzinza kweekhemikhali kumaqondo aphezulu, kwaye ayichithwanga ngokunciphisa umoya, iglasi etyhidiweyo kunye nesinyithi esityhidiweyo. , amandla afanelekileyo omatshini kunye nokuxhatshazwa kokugqoka kwiqondo lokushisa eliqhelekileyo kunye nokushisa okuphezulu.

02I-Fused Corundum
I-Fused corundum yi-corundum eyenziwe ngokunyibilikisa i-alumina ecocekileyo yomgubo kwisithando sombane esinobushushu obuphezulu. Ineempawu zenqanaba eliphezulu lokunyibilika, amandla omatshini aphezulu, ukuxhathisa ukothuka kwe-thermal, ukuxhathisa okuqinileyo kwe-corrosion kunye ne-coefficient encinci yokwandiswa komgca. I-Fused corundum yimathiriyeli ekrwada yokwenza izinto ezinqabileyo ezinqabileyo ezikumgangatho ophezulu. Ikakhulu ibandakanya i-corundum emhlophe edibeneyo, i-corundum ebomvu edibeneyo, i-sub-white corundum, njl.

03I-Fused White Corundum
I-corundum emhlophe edibeneyo yenziwe ngomgubo ococekileyo we-alumina kwaye inyibilika kwiqondo lokushisa eliphezulu. Imhlophe ngombala. Inkqubo ye-smelting ye-corundum emhlophe yinkqubo yokunyibilika kunye ne-recrystallization ye-industrial alumina powder, kwaye akukho nkqubo yokunciphisa. Umxholo we-Al2O3 awukho ngaphantsi kwe-9%, kwaye umxholo wokungcola uncinci kakhulu. Ukuqina kuncinci kancinci kune-brown corundum kwaye ukuqina kusezantsi kancinci. Idla ngokusetyenziswa ukwenza izixhobo ezirhabaxa, iiseramikhi ezikhethekileyo kunye nemathiriyeli ephucukileyo ephucukileyo.

04I-Fused Brown Corundum
I-corundum emdaka edityanisiweyo yenziwe nge-alumina ephezulu ye-alumina njengeyona mathiriyeli ekrwada kwaye ixutywe ne-coke (anthracite), kwaye inyibilikiswa kwiziko lombane elinobushushu obuphezulu kumaqondo obushushu angaphezu kwama-2000°C. I-corundum emdaka edityanisiweyo inokwakheka okuxineneyo kunye nobunzima obuphezulu kwaye ihlala isetyenziswa kwi-ceramics, ii-casting ezichanekileyo kunye nezixhobo ezichasayo eziphambili.

05I-Corundum emhlophe engaphantsi
I-subwhite corundum iveliswa nge-electromelting ibakala elikhethekileyo okanye i-bauxite yebanga lokuqala phantsi kokunciphisa umoya kunye neemeko ezilawulwayo. Xa unyibilika, yongeza i-agent yokunciphisa (ikhabhoni), i-ejenti yokumisa (iifayile zentsimbi) kunye ne-decarburizing agent (isikali sentsimbi). Ngenxa yokuba ukwakheka kweekhemikhali kunye neempawu ezibonakalayo zisondele kwi-corundum emhlophe, ibizwa ngokuba yi-sub-white corundum. Ubuninzi bayo obukhulu bungaphezulu kwe-3.80g / cm3 kwaye i-porosity yayo ebonakalayo ingaphantsi kwe-4%. Yimathiriyeli efanelekileyo yokuvelisa izixhobo ezichasayo eziphambili kunye nezixhobo zokunxiba.

06I-Chrome corundum
Ngokwesiseko se-corundum emhlophe, i-22% ye-chromium yongezwa, kwaye yenziwe ngokunyibilika kwisithando sombane se-arc. Umbala umfusa-bomvu. Ubunzima buphezulu kancinci kune-brown corundum, efana ne-corundum emhlophe, kwaye i-microhardness ingaba yi-2200-2300Kg / mm2. Ubunzima buphezulu kunobo be-corundum emhlophe kwaye buphantsi kancinci kune-brown corundum.

07Zirconium Corundum
I-Zirconium corundum luhlobo lwe-corundum eyenziwe ngokunyibilikisa i-alumina kunye ne-zirconium oxide kwiqondo lokushisa eliphezulu kwisithando sombane se-arc, i-crystallizing, ukupholisa, ukutyumza kunye nokuhlola. Isigaba esiphambili se-crystal ye-zirconium corundum yi-α-Al2O3, isigaba se-crystal sesibini yi-baddeleyite, kwaye kukho nenqanaba elincinci leglasi. I-crystal morphology kunye nesakhiwo se-zirconium corundum zizinto ezibalulekileyo ezichaphazela umgangatho wayo. I-Zirconium corundum ineempawu zokuqina okuphezulu, ukuqina okuhle, ukomelela okuphezulu, ukuthungwa okuxineneyo, amandla okusila aqinileyo, iipropathi ezizinzile zeekhemikhali, kunye nokuchasana kokuthotywa kwe-thermal. Isetyenziswa ngokubanzi kwii-abrasives kunye namashishini ezinto ezichasayo. Ngokomxholo wayo we-zirconium oxide, inokwahlulwa ibe ngamanqanaba amabini emveliso: ZA25 kunye ne-ZA40.