Clay bonded refractory castable sidoo kale waa ka si caadi ah loo isticmaalo, in kasta oo refractoriness aanu ka sarrayn aluminium refractory castable sare, laakiin qiimuhu waa xad raqiis ah, hoos ficil of hacetaphosphate dispersant sodium iyo xinjirowga, asal ahaan helaan waxqabadka dhismaha, heerkulka iyo heerkulka hoose. xoog. Sidaa darteed, in dhoobada dhoobada ah ee dhoobada ah ee dhoobada ah, kaliya firidhiyuhu wuxuu si buuxda u kala firdhi karaa qaybaha dhoobada si loo yareeyo dheecaanka dhoobada dhoobada, halka sodium hexametaphosphatine uu ka ciyaari karo door wanaagsan oo kala firidhsan oo dhoobo ah oo dhoobo ah, sidaas darteed dhoobada dhoobada castable refractory waxa uu leeyahay dareere wanaagsan iyo constructability, si loo hubiyo in ay heerkul sare oo wanaagsan.
Saamiga isku dhafka ah ee kabka dib u celintu waa kala duwan yahay. Dhoobada oo lagu daray castable refractory waxay leedahay shuruudaha index gaar ah oo loogu talagalay dhoobada: AL2O3 waa 29% ~ 35%, Fe2O3 waa ka yar 1.8%, K2O waa ka yar 1.1%, gubashada waa la dhimay ilaa 10% ~ 14%, refractoriness waa ka weyn yahay. 1670℃, oo leh heerkul aad u balaadhan oo kala duwan, oo ka kooban macdanta waa in ay ku jiraan qadar yar oo montmorillonite ah iyo mica iyo walxo kale, si ay u yeelato isku xirnaan wanaagsan iyo caag. In ka badan 60% dhoobada waa in ay ka yar tahay 0.088mm ka dib marka la shiido, iyo qiyaasta waa 7% -13%.
Isku-darka isku-darka ah wuxuu badiyaa isticmaalaa clinker dhoobo iyo bauxite clinker sare, cabbir weyn 10mm, xisaabaadka guud ee qiyaastii 70%, budada ganaax dooro gaar ah ama Clinker bauxite sare ee shiidi, mararka qaarkood sidoo kale lagu qaso budada aluminium ama budada corundum, in ka yar xisaabaadka 0.088mm in ka badan 85%, in castable 17% ~ 25%.
Doorashada guud ee sibidhka sare ee aluminium ama sibidh saafi ah calcium sida wakiilka adag, qiyaasta waa 0.2% ~ 3.0%, in nidaamka kala firdhiso colloidal dhoobo, ku dar ions biraha alkali sida kala firdhiso, samayn kartaa dhoobada alkali ion, sababtoo ah ions alkali leeyihiin positivity xoog leh, kala duwanaansho iman kara, xoog wax laga naxo oo u dhexeeya qaybo dhoobo ah. Waxaa jira cations badan oo dhoobo ah, iyo bareeg ee qaybo ka mid ah ayaa kordha, taas oo kor u gel colloidal dhoobada, sii daayo biyo lacag la'aan ah, xoojisaa dheecaanka ee castable, iyo waa ku haboon si ay u walaaqo qaabaynta.
Marka la barbar dhigo kabka cementiga ah ee aluminate, kabka caagga ah ee dhoobada caadiga ah wuxuu leeyahay sifooyin xoog sare, hoos uma dhacna xoogga heerkulka dhexdhexaadka ah iyo iska caabinta spalling. Marka la barbardhigo caagagga, waxay leedahay sifooyinka dhismaha habboon iyo kaydinta fudud. Heerkulka isticmaalkiisu guud ahaan waa 1400 -- 1500 ℃.Sodium hexametaphosphate(Hexametaphosphate) ayaa si weyn loogu isticmaalay foornooyinka ololka sida foornada wax lagu qooyay ee dhoobada ah iyo foornada kululaynta.
Waqtiga boostada: Febraayo-13-2023
