Owona msebenzi uphambili we isitena semagnesia

a. Ukujonga kwakhona

Ngenxa yokuba indawo yokunyibilika ye-periclase (MgO) crystals iphezulu kakhulu, ifikelela kwi-2800 ℃, i-refractoriness yezitena ze-magnesia yeyona iphakamileyo phakathi kwezitena eziphikisayo eziqhelekileyo, zihlala zingaphezu kwe-2000 ℃.

b. Amandla esakhiwo sobushushu obuphezulu

Amandla obushushu obuphezulu bezitena ze-magnesia akulunganga, kwaye iqondo lokushisa lokuqala lokuthambisa phantsi komthwalo liphakathi kwe-1500 kunye ne-1550 ° C, elingaphezulu kwe-500 ° C ngaphantsi kwe-refractoriness.

c. Ukuxhathisa kweSlag

Izitena ze-Magnesium zizinto eziphikisayo ze-alkaline kwaye zinokuchasana okunamandla kwi-alkaline slag efana ne-CaO kunye ne-FeO. Ke ngoko, zidla ngokusetyenziswa njengezixhobo zokubumba kwiziko lokunyibilikisa i-alkaline, kodwa ukuxhathisa kwabo kwi-acid slag kubi kakhulu. Izitena ze-Magnesium azikwazi ukudibanisa nezixhobo zokunqanda i-acidic, ziya kusabela ngeekhemikhali kunye nomnye kwaye zihlanjululwe ngaphezu kwe-1500 ° C. Ngoko ke, izitena ze-magnesia azikwazi ukuxutywa nezitena ze-silica.

d. Ukuzinza kweThermal

Ukuzinza kwe-thermal yezitena ze-magnesia kubi kakhulu, kwaye kunokumelana nokupholisa kwamanzi ngamaxesha angama-2 ukuya kwe-8, eyona nto inkulu.

e. Ukuzinza komthamo

I-coefficient yokwandisa i-thermal yesitena se-magnesia inkulu, i-coefficient yokwandisa umgca phakathi kwe-20 ~ 1500 ℃ yi-14.3 × 106, ngoko ke ukudibanisa okwaneleyo kufuneka kushiywe ngexesha lenkqubo yezitena.

f. I-Thermal conductivity

I-thermal conductivity yezitena ze-magnesia ngamaxesha amaninzi kwizitena zodongwe. Ke ngoko, umaleko wangaphandle wesithando somlilo owakhiwe ngezitena ze-magnesia kufuneka ngokubanzi ube nomgangatho owaneleyo wokugquma ubushushu ukunciphisa ilahleko yobushushu. Nangona kunjalo, i-thermal conductivity yezitena ze-magnesia iyancipha ngokunyuka kweqondo lokushisa.

g. Ukufakwa kwamanzi

I-magnesium oxide engonelanga ibalwe ngamanzi idibana namanzi ukuze ivelise le mpendulo ilandelayo: MgO+H2O→Mg(OH)2

Oku kubizwa ngokuba yi-hydration reaction. Ngenxa yale mpendulo, umthamo uyanda ukuya kwi-77.7%, okwenza umonakalo omkhulu kwitena ye-magnesia, ebangela ukuqhekeka okanye i-avalanche. Isitena se-magnesia kufuneka sikhuseleke kumswakama ngexesha lokugcinwa.