Yintoni umahluko phakathi izitena eziphezulu zealumine kunye nezitena zodongwe

Izitena ezinobunzima obuphezulu be-alumina zihlala zisebenzisa i-bauxite clinker ephezulu kunye nodongwe oluncinci. Emva kokuba zigalelwe, zigalelwe kwaye zibunjwe ngendlela yodaka ngendlela yokuvelisa igesi okanye indlela ye-foam, kwaye igxothwe kwi-1300-1500 ° C. Ngamanye amaxesha i-alumina ye-industrial ingasetyenziselwa ukutshintsha inxalenye ye-bauxite clinker. Isetyenziselwa i-lining kunye ne-heat insulation layer ye-masonry kilns, kunye neendawo ezingagqwaliswanga kwaye zikhutshulwe zizixhobo ezityhidiweyo ezinobushushu obuphezulu. Xa udibana ngqo nedangatye, iqondo lobushushu bomphezulu aliyi kuba ngaphezulu kwe-1350 ℃.

Izitena zodongwe ezilula, i-thermal insulation refractories ibhekisela kwii-refractories ezine-porosity ephezulu, ubuninzi obuphantsi kunye ne-conductivity ephantsi ye-thermal. I-Thermal insulation refractories ikwabizwa ngokuba zii-lightweight refractories, ezibandakanya iimveliso zokunqanda ukugquma kwe-thermal, ii-refractory fibers kunye ne-refractories iimveliso zeFayibha. I-refractories ye-thermal insulation ibonakaliswe nge-porosity ephezulu, ngokubanzi i-40% -85%; ubuninzi obuphantsi obungaphantsi kwe-1.5g / cm3; i-thermal conductivity ephantsi, ngokubanzi ngaphantsi kwe-1.0W (mK). Isebenza njengesixhobo sokugquma ubushushu kwizitofu zeshishini, ezinokunciphisa ilahleko yobushushu kwiziko, yonge amandla, kwaye inciphise umgangatho wezixhobo ezishushu. I-refractories yokufakelwa kwe-thermal inamandla omatshini angalunganga, ukuxhathisa i-abrasion kunye ne-slag corrosion resistance, kwaye ayifanelekanga kwisakhiwo esithwala umthwalo we-oven kunye noqhagamshelwano oluthe ngqo kunye ne-slag, intlawulo, isinyithi esityhidiweyo kunye nezinye iindawo.

Kukho umahluko kumxholo we-aluminium, ubunzima beyunithi, ubushushu bokusebenzisa, kunye nombala. Umzekelo: izitena ze-alumina eziphakamileyo ezingama-75 kunye nezitena zodongwe ezingama-43, iiyunithi ezingama-75 ezinobunzima obungaphezulu kwe-4.5kg. I-43 malunga ne-3.65kg, ukushisa kokusetyenziswa kwe-75 ephezulu ye-alumina malunga ne-1520, i-43 yezitena imalunga ne-1430, umbala ngu-75 emhlophe, kwaye i-43 ilahlekile. Ngokufutshane, umahluko mkhulu.