Izitena ezikwazi ukumelana nobushushu obuphezulu kwiiKilns, iifurnaces

Ngokwamacandelo ahlukeneyo ezitena eziphikisayo, zinokwahlulwa zibe ziindidi ezintlanu, ezizezi: i-silicon-alumina series refractory bricks, i-alkaline series refractory bricks, izitena ze-carbon-containing refractory, i-zirconium equkethe izitena eziphikisayo, kunye nezitena ezinqanda ukushisa.

Nasiphi na isithando somlilo asikhiwanga ngohlobo olulodwa kuphela lwezitena eziphikisayo, zidinga ukudibanisa izitena ezahlukeneyo eziphikisayo.

(1) Izitena ze-silica zibhekisela kwizitena eziphikisayo eziqukethe ngaphezu kwe-93% ye-SiO2, ezo ziyindidi eziphambili zezitena ze-acid refractory.Isetyenziswa ikakhulu kwii-oveni ze-coke ze-masonry, kodwa nakwiindawo zokugcina iimpahla kunye nezinye iindawo ezithwele imithwalo ye-thermal kilns zeglasi ezahlukeneyo, iiseramikhi, i-carbon calciners, kunye nezitena ezilahlayo.Isetyenziswe kwisixhobo esishushu esingaphantsi kwe-600 ° C kunye nokuguquguquka okukhulu kweqondo lokushisa.

(2)Izitena zodongwe.Izitena zodongwe ikakhulu zenziwe nge-mullite (25% ukuya kwi-50%), isigaba seglasi (25% ukuya kwi-60%), kunye ne-cristobalite kunye ne-quartz (ukuya kwi-30%).Ngokuqhelekileyo, udongwe oluqinileyo lusetyenziswa njengento eluhlaza, i-clinker ibalwa kwangaphambili kwaye ixutywe nodongwe oluthambileyo.Umlinganiselo omncinci weglasi yamanzi, isamente, kunye nezinye izibophelelo nazo zinokongezwa ukwenza iimveliso ezingatshiyo kunye nezinto ezingenakubumba.Sisitena esiqhele ukusetyenziswa kwizitena eziqhumayo, izitovu ezitshisayo, izitofu zokufudumeza, iibhoyila zamandla, iikilni zekalika, iitoni ezijikelezayo, iiseramikhi, kunye neetoni zokudubula ngezitena.
(3) Izitena eziphezulu ze-alumina refractory.Ukubunjwa kwamaminerali kwezitena eziphezulu ze-alumina refractory yi-corundum, i-mullite, kunye nezigaba zeglasi.Izinto eziluhlaza ziphezulu-alumina bauxite kunye ne-sillimanite ore yendalo, kwaye kukho kwakhona i-corundum edibeneyo, i-alumina e-sintered, i-synthetic mullite, kunye ne-clinker calcined nge-alumina kunye nodongwe ngokwemilinganiselo eyahlukeneyo.Iveliswa kakhulu yindlela ye-sintering.Kodwa iimveliso zikwabandakanya izitena ezidityanisiweyo, izitena ezidityanisiweyo, izitena ezingatshiswanga, kunye nezitena ezingafakwanga.Izitena eziphezulu ze-alumina refractory zisetyenziswa ngokubanzi kwi-iron kunye ne-industry yensimbi, i-non-ferrous metal industry, kunye namanye amashishini.(4) Izitena ze-Corundum refractory, izitena ze-corundum zibhekisela kuhlobo lwezitena ze-refractory kunye nomxholo we-AL2O3 ongekho ngaphantsi kwe-90% kunye ne-corundum njengenqanaba eliphambili, elinokwahlulwa ngokwezitena ze-sintered corundum kunye nezitena ezidibeneyo ze-corundum (5) High- i-alumina ekhusela ubushushu bokukhanya-ubunzima bezitena ezikhanyelayo.Yisitena esikhuselayo sokukhanya esikhuselayo kunye ne-bauxite njengomxholo oyintloko we-AL2O3 ongekho ngaphantsi kwe-48%.Inkqubo yokuvelisa ithatha indlela yogwebu, kwaye indlela yokongeza yokutshisa ingasetyenziswa.Izitena ze-alumina ezikhusela ubushushu ezikhanyayo zingasetyenziselwa ukwakha iileya ezikhusela ubushushu kunye neendawo apho kungekho mandla aphezulu obushushu obuphezulu obunyibilikisiweyo kunye nokukhukuliseka.Xa udibana ngokuthe ngqo nedangatye, iqondo lobushushu bomphezulu we-alumina jikelele elikhusela ubushushu aliyi kuba ngaphezulu kwe-1350 ℃.Izitena ze-refractory ze-Mullite ezikhusela ukushisa ziyakwazi ukudibanisa ngokuthe ngqo ilangatye kwaye zibe neempawu zokumelana nokushisa okuphezulu, amandla aphezulu, kunye nefuthe elimangalisayo lokugcina amandla.Ilungele ukufakwa kwesithando somlilo se-pyrolysis, isithando somlilo esitshisayo, i-ceramic roller kiln, i-electric porcelain drawer kiln, kunye neendawo ezahlukeneyo zokuxhathisa.(6) Izitena zodongwe ezikhusela ubushushu zibubushushu obukhusela ubushushu obune-AL2O3 nomxholo we-30% ukuya kwi-48% eyenziwe ngodongwe oluphikisayo njengeyona nto iphambili.Inkqubo yokuvelisa ithatha indlela yokutshisa kunye neempawu kunye nendlela yogwebu.Ukusebenzisa udongwe oluphikisayo, amaso ajikelezayo, kunye ne-refractory clay clinker njengezinto eziluhlaza, ukongeza i-binder kunye ne-sawdust, ngokuxutywa, ukuxuba, ukubumba, ukumisa, kunye nokudubula, imveliso enobuninzi be-0.3 ukuya kwi-1.5g / cm3 ifunyenwe.Imveliso yezitena ezikhusela ukushisa ngodongwe zenza ngaphezu kwesiqingatha sesiphumo esipheleleyo se-heat-insulating refractory bricks.