Ukuhlelwa kunye neendlela zokuvelisa ze iirefractories ezilula

Kweli nqaku, abavelisi bezitena be-Henan bafuna ukuthetha nawe malunga nokuhlelwa kunye neendlela zokuvelisa iirefractories ezilula. I-refractories elula ibhekisela kwii-refractories ezine-porosity ephezulu, i-low bulk density kunye ne-conductivity ephantsi ye-thermal. I-refractories elula inesakhiwo se-porous (i-porosity ngokuqhelekileyo i-40-85%) kunye ne-thermal insulation ephezulu.

Zininzi iindlela zokuhlela ze iirefractories ezilula

1. Ihlelwa ngokobuninzi bevolumu. Izitena ezikhaphukhaphu ezinobunzima obukhulu obuyi-0.4 ~ 1.3g / cm ~ 2 kunye nezitena ezikhanyayo ezinobuninzi obungaphantsi kwe-0.4g / cm ~ 2.

2. Ihlelwe ngubushushu bokusebenza. Ubushushu besicelo 600～900℃ sisixhobo sokugquma ubushushu obuphantsi; I-900～1200℃ sisixhobo sokugquma ubushushu obuphakathi; ngaphezu kwe-1200 ℃ yimathiriyeli yokugquma ubushushu obuphezulu.

3. Ihlelwe ngokwemilo yemveliso. Enye yenziwe izitena ezikhanyelayo ezilula, ezibandakanya udongwe, i-alumina ephezulu, i-silica kunye nezinye izitena ezicocekileyo ze-oxide; enye yimathiriyeli ekhaphukhaphu engabunjwanga, njengekhonkrithi ekhaphukhaphu ekhanyelayo.

Ilahleko yokugcina ubushushu kunye nelahleko yokutshatyalaliswa kobushushu kumphezulu webhodi yeziko loshishino ngokuqhelekileyo ibalelwa kwi-24 ukuya kwi-45% yokusetyenziswa kwamafutha. Ukusetyenziswa kwezitena ezilula kunye ne-conductivity ephantsi ye-thermal kunye nomthamo omncinci wokushisa njengoko i-structural material of the furnace body inokugcina ukusetyenziswa kwamafutha; ngelo xesha, ngenxa yesithando somlilo Inokufudunyezwa kwaye ipholile ngokukhawuleza, iphucula ukusebenza kakuhle kwezixhobo, inciphisa ubunzima bomzimba wesithando somlilo, yenza lula ukwakheka komzimba we-oven, iphucula umgangatho wemveliso, inciphisa ubushushu bendalo. , kwaye iphucula iimeko zokusebenza.

Ukungalungi kwee-refractories ezilula ziyi-porosity enkulu, isakhiwo esikhululekile kunye nokuxhatshazwa kwe-slag embi. I-slag ingena ngokukhawuleza kwi-pores yesitena, ibangela ukuba idibanise, kwaye ayikwazi ukusetyenziswa ngokuthe ngqo ekudibaneni ne-slag etyhidiweyo kunye nentsimbi yamanzi; inamandla aphantsi oomatshini, ukunganyangeki kokunxiba, kunye nokuzinza okuphantsi kwe-thermal. Ayinakusetyenziselwa izakhiwo zokuthwala imithwalo, kwaye ayinakusetyenziselwa ukudibanisa nezinto zokutshisa kunye nokugqoka okunzima. Yendawo.

Ngenxa yokusilela okukhankanyiweyo ngasentla kwezixhobo zokukhanyela ezikhaphukhaphu, iinxalenye zeekhilni zefektri ezidityaniswe nentlawulo, umoya oshushu uthwala i-slag, ukuhamba okukhulu, kunye neenxalenye ezine-vibration ephezulu yomatshini azisetyenziswa ngokubanzi. Iirefractories ezikhaphukhaphu zihlala zisetyenziswa njengokugcina ubushushu okanye izinto zokugcina ubushushu kwiikontini.