I-Mullite casting yenziwe nge-aggregate ye-mullite ekumgangatho ophezulu, yongeza umgubo ocolekileyo kunye nezongezelelo ukuvuselela ukubunjwa kwe-refractory.Ubungakanani besuntswana elibalulekileyo le-mullite aggregate yi-12mm;Ubushushu bokusetyenziswa kwexesha elide yi-1350 ℃.Ukwakhiwa kwe-mullite ephezulu yokuqina kwe-resistant refractory castable ingqongqo.I-refractory castable iya kuxutywa namanzi acocekileyo.I-formwork egalelwe ngamanzi iya kuba nobulukhuni kunye namandla okwaneleyo.Ubungakanani bokungunda buchanekile.Ukuguqulwa kuya kuthintelwa ngexesha lokwakha.Amalungu e-formwork aya kuba ngqongqo.
Kwiimfuno zolwakhiwo lwe-mullite refractory castable, imilinganiselo yokunqanda ukuncamathela iyakuthatyathwa kwi-formwork, kunye nomphezulu we-thermal insulation masonry odibana nokuphosa uya kukhuseleka emanzini.I-castable iya kuxutywa kunye nomxube onamandla.Ixesha lokuxuba kunye nomthamo wamanzi uya kuhambelana nemiyalelo yokwakha.Umxubi, ihopper kunye nesikhongozeli sokulinganisa kufuneka zicocwe xa kutshintshwa inani leetreyi.Ukuxutywa kweecastings ezidibeneyo kuya kugqitywa ngaphakathi kwe-30min okanye ngokwemiyalelo yokwakha.Izixhobo zokuphosa ezisandula ukwenziwa aziyi kusetyenziswa.Ukwandiswa okudibeneyo kwe-cast refractory kuya kusekwa ngokweemfuno zoyilo.
Akukho mandla angaphandle okanye ukungcangcazela kuya kusetyenziswa ngexesha lokunyanga.Vula ukubumba.Akukho formwork iya kulayishwa, kwaye amandla ezinto zokugalela ziya kuba kangangokuba umphezulu kunye neekona zemold esongiweyo zingonakali okanye zikhubazeke kwaye zinokususwa.Emva kokuba izinto zokuphosa zifikelele kwi-70% yamandla oyilo, i-formwork yokuthwala iya kususwa.Iicastings ezishushu neziqinileyo ziya kubhakwa kwiqondo lobushushu elichaziweyo phambi kokusongwa.Umphezulu we-lining wokugalela awusayi kuxobuka, ukuqhekeka, imingxuma, njl njl. Ukuqhekeka okuncinci kwenethiwekhi kuvumelekile.Iicastrefractory ezenziwe kwangaphambili aziyi kupakishwa kwindawo evulekileyo.Ubungqina bemvula kunye namanyathelo okuthintela ukufuma kuya kuthathwa xa kupakishwa kwindawo evulekileyo.
I-mullite castable inobushushu obuphezulu kwaye inokuvezwa ngokuthe ngqo kwi-lining yokusebenza, iqonda ukonga amandla obushushu obuphezulu, ubunzima beyunithi yokukhanya kunye ne-40 ~ 60% yokunciphisa ubunzima besakhiwo I-conductivity ephantsi ye-thermal, i-porous mullite aggregate, i-conductivity ephantsi ye-thermal, ukusebenza kakuhle kwe-thermal insulation. , ukomisa ngokukhawuleza, ukunciphisa ixesha lokumisa, inzuzo ebalulekileyo yezoqoqosho.
Uhlobo lwe-binder eyenziwe nge-mullite castable inokugcina ukusebenza kakuhle kwe-mullite.Isibophelelo sesona sibophelelo singcono, esinokwenza i-mullite kubushushu obuthile.Ukuqwalasela ukusetyenziswa kwe-castable kwiimeko ezahlukeneyo, i-mullite kufuneka yenziwe kwiqondo lokushisa eliphantsi kangangoko kunokwenzeka.Ngokucacileyo, ijeli ye-silica yinto efanelekileyo yokuncamathelisa.Ukuqwalasela ixabiso eliphantsi, i-silica gel isetyenziselwa ukulinganisa i-colloidal suspension, apho i-Al2O3: i-SiO2 kufuneka isondele okanye ilingane nomlinganiselo we-mullite.
I-Aluminiyam ine-hydration efanelekileyo kunye neempawu zendalo zokuqina.Umsebenzi womphezulu uphezulu kakhulu, ngoko ke indima yawo kwi-refractory castable kukusabela nge-SiO2umgubo ukwenza mullite kwiqondo lobushushu elisezantsi, ngoko isixa ukongeza Al2O3+SiO2sisidibanisi esifanelekileyo.Iziphumo zibonisa ukuba izibophelelo ezimbini zinokwenza i-mullite kwaye zibe namandla abandayo.
Ixesha lokuposa: Oct-24-2022