Udongwe oludityanisiweyo lwe-refractory castable lukwasetyenziswa kakhulu, nangona i-refractoriness ayikho phezulu kune-aluminiyam ephezulu ye-refractory castable, kodwa ixabiso lincinci, phantsi kwesenzo se-sodium hacetaphosphate dispersant kunye ne-coagulant, ngokusisiseko ukufumana umsebenzi wokwakha, ubushushu kunye nobushushu obuphantsi. amandla. Ngoko ke, kwi-refractory castable yodongwe, kuphela i-dispersant inokusasaza ngokupheleleyo amasuntswana odongwe ukunciphisa ukukhuselwa kwamasuntswana odongwe, ngelixa i-sodium hexametaphosphatine inokudlala indima enhle yokusabalalisa kwi-refractory castable castable, ukwenzela ukuba udongwe luboshwe. i-refractory castable inobumanzi obuhle kunye nokwakheka, ukuze kuqinisekiswe ukusebenza kwayo okuhle kobushushu obuphezulu.
Umyinge womxube wodongwe owenziweyo owenziweyo uyahluka. Udongwe oludityaniswe ne-refractory castable luneemfuno ezithile zesalathiso sodongwe: i-AL2O3 yi-29% ~ 35%, i-Fe2O3 ingaphantsi kwe-1.8%, i-K2O ingaphantsi kwe-1.1%, ukutshisa kuyancipha ukuya kwi-10% ~ 14%, i-refractoriness inkulu kune-1. I-1670 ℃, kwaye inoluhlu olubanzi lobushushu be-sintering, kulwakhiwo lweminerali kufuneka luqulathe umlinganiselo omncinci we I-montmorillonite kunye ne-mica kunye nezinye izinto, ukwenzela ukuba ibe nokudibanisa okulungileyo kunye neplastiki. Ngaphezulu kwe-60% yodongwe kufuneka ibe ngaphantsi kwe-0.088mm emva kokusila, kwaye umthamo wayo ngu-7% -13%.
I-aggregate ye-refractory ikakhulu isebenzisa i-clinker yodongwe kunye ne-bauxite clinker ephezulu, ubukhulu obukhulu be-10mm, i-akhawunti ye-aggregate ngokubanzi malunga ne-70%, i-powder ecolekileyo khetha ekhethekileyo okanye I-bauxite clinker ephezulu yokugaya, ngamanye amaxesha ixutywe nomgubo we-aluminium okanye i-corundum powder, ngaphantsi kwe-akhawunti ye-0.088mm. ngaphezu kwe-85%, kwi-castable 17% ~ 25%.
Ukukhethwa ngokubanzi kwesamente ephezulu ye-aluminium okanye i-samente ye-calcium ecocekileyo njenge-ejenti yokuqina, i-dosage yi-0.2% ~ 3.0%, kwinkqubo yokuchithwa kodongwe ye-colloidal, yongeza i-ion ye-alkali yesinyithi njenge-dispersant, inokwenza udongwe lwe-alkali ion, kuba i-alkali ion ine-positivity enamandla, Umahluko onokwenzeka, amandla anyanyekayo phakathi kwamasuntswana odongwe. Kukho i-cations eninzi kudongwe, kwaye ikhefu leengqungquthela liyenyuka, elikhuthaza i-gel colloidal yodongwe, ikhupha amanzi akhululekileyo, iphucula i-fluidity of castable, kwaye ilungele ukubumba.
Xa kuthelekiswa ne-aluminate Cement refractory castable, udongwe oluqhelekileyo lwe-refractory castable luneempawu zamandla aphezulu, akukho kuncipha kwamandla kwiqondo lokushisa eliphakathi kunye nokumelana nokusabalalisa. Xa kuthelekiswa neplastiki, ineempawu zokwakha ezifanelekileyo kunye nokugcinwa okulula. Ubushushu bokusebenzisa ngokuqhelekileyo yi-1400 -- 1500℃.I-sodium hexametaphosphate(I-Hexametaphosphate) isetyenziswe ngokubanzi kwiziko elivuthayo elifana neziko lokufunxa ngodongwe kunye neziko lokufudumeza.
Ixesha lokuposa: Feb-13-2023
