Clay bonded refractory castable ndi yogwiritsidwanso ntchito kwambiri, ngakhale kuti refractoriness siipamwamba kuposa aluminium refractory castable, koma mtengo wake ndi wotsika mtengo, chifukwa cha sodium hacetaphosphate dispersant ndi coagulant, makamaka kupeza ntchito yomanga, kutentha ndi kutentha kochepa. mphamvu. Choncho, mu dongo womangidwa refractory castable, yekha dispersant akhoza mokwanira kumwazikana dongo particles kuchepetsa katulutsidwe wa dongo particles, pamene sodium hexametaphosphatine akhoza kuchita bwino kubalalitsidwa udindo dongo-boma refractory castable, kuti dongo-womangidwa. refractory castable imakhala ndi madzi abwino komanso okhazikika, kuti awonetsetse kuti kutentha kwake kukuyenda bwino.
The mix chiŵerengero cha dongo refractory castable ndi zosiyanasiyana. Dongo pamodzi ndi refractory castable ali enieni index amafuna dongo: AL2O3 ndi 29% ~ 35%, Fe2O3 ndi zosakwana 1.8%, K2O ndi zosakwana 1.1%, kuyatsa yafupika 10% ~ 14%, refractoriness ndi wamkulu kuposa 1670 ℃, ndipo ali osiyanasiyana sintering kutentha osiyanasiyana, mu zikuchokera mchere ayenera kukhala ndi pang'ono montmorillonite ndi mica ndi zinthu zina, kuti zikhale ndi mgwirizano wabwino ndi pulasitiki. Zoposa 60% za dongo ziyenera kukhala zosakwana 0.088mm pambuyo popera, ndipo mlingo wake ndi 7% -13%.
Refractory aggregate makamaka amagwiritsa ntchito clinker dongo ndi mkulu bauxite clinker, lalikulu kukula 10mm, ambiri akaphatikiza nkhani pafupifupi 70%, ufa wabwino kusankha wapadera kapena A mkulu bauxite clinker akupera, nthawi zinanso wothira zotayidwa ufa kapena corundum ufa, nkhani zosakwana 0.088mm nkhani. kuposa 85%, mu castable 17% ~ 25%.
General kusankha mkulu zotayidwa simenti kapena koyera kashiamu simenti monga kuumitsa wothandizila, mlingo ndi 0.2% ~ 3.0%, mu dongo colloidal kupezeka dongosolo, kuwonjezera ayoni zitsulo zamchere monga dispersant, akhoza kupanga alkali ayoni dongo, chifukwa ayoni alkali ndi amphamvu positivity, kusiyana kothekera, mphamvu yonyansa pakati pa tinthu tadongo. Pali cations mu dongo, ndi imeneyi wa particles ukuwonjezeka, amene amalimbikitsa colloidal gel osakaniza dongo, amamasula madzi aulere, timapitiriza fluidity wa castable, ndi yabwino yogwira akamaumba.
Poyerekeza ndi aluminate simenti refractory castable, wamba dongo refractory castable ali ndi makhalidwe a mphamvu mkulu, palibe kuchepa mphamvu pa sing'anga kutentha ndi kukana spalling. Poyerekeza ndi pulasitiki, ili ndi makhalidwe a zomangamanga zosavuta komanso zosavuta kusunga. Kugwiritsa ntchito kwake kutentha kumakhala 1400 -- 1500 ℃.Sodium hexametaphosphate(Hexametaphosphate) yakhala ikugwiritsidwa ntchito kwambiri m'ng'anjo zamoto monga ng'anjo yadothi yothira dongo ndi ng'anjo yowotcha.
Nthawi yotumiza: Feb-13-2023
