Yimalini isitena sokufakelwa kwe-mullite?

Uluhlu lwe-JM lwezitena zokufakelwa kwe-mullite zine-JM26, JM28, JM30, JM32 ngokweqondo lokushisa lokusetyenziswa. Ixabiso lemarike yeqhekeza ngalinye ziiyuan ezimbalwa ngeyuan. Ixabiso liya kuguquguquka ngokomxholo wezalathi ezahlukeneyo kunye nemfuno. Malunga ne-mullite Ngokuphathelele kwimiba enxulumeneyo yokuba singakanani isitena sokufakelwa, ixabiso elithile kufuneka ligqitywe ngokudibeneyo emva kokubonisana nomenzi we-refractory.

Isitena se-Mullite se-insulation siyinto ephezulu ye-alumina refractory kunye ne-mullite (3Al2O3 · 2SiO2) njengesigaba esiphambili se-crystal. Ngokuqhelekileyo, umxholo we-alumina uphakathi kwe-65% kunye ne-75%. Ukongeza kwi-mullite, ukubunjwa kwamaminerali kuqulethe ixabiso elincinci leglasi kunye ne-cristobalite kunye nomxholo ophantsi we-alumina; umxholo ophezulu we-alumina uqulethe ixabiso elincinci le-corundum. Izitena zokugquma i-Mullite zingasetyenziselwa ngokuthe ngqo kwi-lining ye-high-temperature kilns, kwaye zisetyenziswe ngokubanzi kwii-shuttle kilns, ii-roller kilns, iglasi kunye ne-petrochemical kilns.

1. Iimpawu zemveliso yezitena zokugquma i-mullite:

1. I-conductivity ephantsi ye-thermal kunye nefuthe elihle lokufakelwa kwe-thermal;

2. Isiqulatho sokungcola okuncinci sinebhokisi yentsimbi ephantsi kakhulu ye-alkali yensimbi kunye nezinye izinto ze-oxide, ngoko ke, i-refractoriness ephezulu; umxholo ophezulu we-aluminium wenza ukuba kugcinwe ukusebenza kakuhle kwimeko yokunciphisa;

3. Isitena sokufakelwa kwe-mullite sinokunyibilika okuphantsi kwe-thermal. Ngenxa ye-conductivity ephantsi ye-thermal, uchungechunge lwe-mullite lwezitena zokugquma ukukhanya ziqokelela amandla amancinci obushushu, kwaye umphumo wokonga amandla uyabonakala ekusebenzeni okuphakathi;

4. Ubungakanani bembonakalo, ukukhawuleza ukukhanyiswa kwe-masonry, ukunciphisa ubuninzi bodaka oluchasayo, uqinisekise amandla kunye nokuzinza kwe-masonry, ngaloo ndlela ukwandisa ubomi be-lining;

5. Izitena zokugquma i-Mullite zinamandla aphezulu oxinzelelo olushushu;

6. Izitena zokugquma i-Mullite zinokucutshungulwa zibe yimilo ekhethekileyo ukunciphisa inani lezitena kunye namajoyina.

2. Ukuhlelwa kwezitena zokugquma i-mullite:

Ngokwenkqubo yayo yokuvelisa, zimbini iindidi zezitena zokugquma i-mullite lightweight: izitena ze-mullite ezidityanisiweyo kunye nezitena ezixutyiweyo ze-mullite:

1. Izitena ze-mullite ze-sintered zenziwe nge-high-alumina bauxite clinker njengeyona nto iphambili eluhlaza, yongeza inani elincinci lodongwe okanye i-bauxite eluhlaza njenge-agent edibeneyo, kunye nokwenza kunye nokudubula.

2. Izitena ze-mullite ezixutywe zenziwe nge-alumina ephezulu, i-alumina ye-industrial kunye nodongwe olukhanyelayo njengezinto eziluhlaza, kunye ne-charcoal okanye i-coke fine particles zongezwa njengee-agent zokunciphisa. Emva kokubumba, zenziwa ngokunciphisa ukunyibilika kombane.

Ukusebenza kunye nokusetyenziswa kwezitena zokufakelwa kwe-mullite: i-refractoriness ephezulu, enokufikelela ngaphezu kwe-1790 ℃. Iqondo lobushushu lokuqala lokuthambisa umthwalo yi-1600℃～1700℃. Amandla acinezelayo kwiqondo lobushushu begumbi yi-70⽞260MPa. Ukumelana kakuhle nokothuka kwe-thermal. Kukho iindidi ezimbini zezitena ze-mullite ezidityanisiweyo kunye nezitena ezixutyiweyo ze-mullite. Izitena ze-mullite ze-Sintered zenziwe nge-high-alumina bauxite clinker njengeyona nto iphambili ekrwada, yongeza inani elincinci lodongwe okanye i-bauxite eluhlaza njenge-binder, kunye nokwenza kunye nokudubula. Izitena ze-mullite ezixutywe zisebenzisa i-alumina ephezulu, i-alumina ye-industrial kunye nodongwe olukhanyelayo njengezinto ezibonakalayo, zongeza amalahle okanye i-coke amaqhekeza amahle njengee-agent zokunciphisa, kwaye zenziwe ngendlela yokunciphisa i-fusion emva kokubunjwa. I-crystallization ye-mullite edibeneyo inkulu kune-sintered mullite, kwaye ukuxhathisa ukothuka kwe-thermal kungcono kunemveliso ye-sintered. Ukusebenza kwabo okuphezulu kweqondo lokushisa kuxhomekeke kumxholo we-alumina kunye nokufana kwesigaba se-mullite kunye nokuhanjiswa kweglasi. Isetyenziswa kakhulu kwisitovu somlilo esitshisayo, isitovu somlilo esiqhumayo kunye nezantsi, i-regenerator yesithando sokunyibilikisa iglasi, i-ceramic sintering kiln, i-dead corner lining ye-furnace system ye-petroleum cracking system, njl.