Clay bonded refractory castable kuj yog siv ntau dua, txawm hais tias qhov refractoriness tsis siab tshaj qhov siab aluminium refractory castable, tab sis tus nqi kuj pheej yig, nyob rau hauv qhov kev txiav txim ntawm sodium hacetaphosphate dispersant thiab coagulant, yeej tau txais kev tsim kho, qhov kub thiab txias. zog. Yog li ntawd, nyob rau hauv cov av nplaum-bonded refractory castable, tsuas yog cov dispersant muaj peev xwm tag nrho disperse cov av nplaum hais kom txo tau cov secretion ntawm av nplaum hais, thaum sodium hexametaphosphatine tuaj yeem ua lub luag haujlwm zoo dispersion hauv av nplaum-bonded refractory castable, kom cov av nplaum-bonded. refractory castable muaj zoo fluidity thiab constructability, thiaj li ua kom nws zoo kub ua hauj lwm.
Qhov sib tov piv ntawm av nplaum refractory castable yog varied. Av nplaum ua ke nrog refractory castable muaj cov ntsiab lus tshwj xeeb rau cov av nplaum: AL2O3 yog 29% ~ 35%, Fe2O3 tsawg dua 1.8%, K2O tsawg dua 1.1%, qhov kub hnyiab tau txo mus rau 10% ~ 14%, refractoriness ntau dua. 1670 ℃, thiab muaj qhov dav sintering kub ntau, nyob rau hauv cov ntxhia muaj pes tsawg leeg yuav tsum muaj me me ntawm montmorillonite thiab mica thiab lwm yam tshuaj, kom nws muaj kev sib raug zoo thiab plasticity. Ntau tshaj 60% ntawm cov av nplaum yuav tsum tsawg dua 0.088mm tom qab sib tsoo, thiab nws qhov ntau npaum li cas yog 7% -13%.
Refractory aggregate tsuas yog siv cov av nplaum clinker thiab siab bauxite clinker, loj loj 10 hli, cov nyiaj sib sau dav dav txog li 70%, hmoov zoo xaiv tshwj xeeb lossis A siab bauxite clinker rau kev sib tsoo, qee zaum kuj tov nrog txhuas hmoov lossis corundum hmoov, tsawg dua 0.088mm nyiaj. rau ntau tshaj 85%, hauv castable 17% ~ 25%.
Kev xaiv dav dav ntawm aluminium cement lossis ntshiab calcium cement ua tus neeg sawv cev tawv, qhov ntau npaum li cas yog 0.2% ~ 3.0%, hauv cov av nplaum colloidal dispersion system, ntxiv alkali hlau ions ua dispersant, tuaj yeem tsim alkali ion av nplaum, vim alkali ions muaj zog zoo, muaj peev xwm sib txawv, repulsive quab yuam ntawm av nplaum hais. Muaj ntau cations nyob rau hauv av nplaum, thiab lub ncua sij hawm ntawm hais, uas txhawb cov colloidal gel ntawm av nplaum, tso dej dawb, txhim khu lub fluidity ntawm castable, thiab yog conducive rau nplawm molding.
Piv nrog aluminate cement refractory castable, cov av nplaum refractory castable muaj cov yam ntxwv ntawm lub zog siab, tsis muaj qhov txo qis hauv lub zog ntawm qhov nruab nrab kub thiab tsis kam mus rau spalling. Piv nrog cov yas, nws muaj cov yam ntxwv ntawm kev tsim kho yooj yim thiab khaws cia yooj yim. Nws siv kub yog feem ntau 1400 - 1500 ℃.Sodium hexametaphosphate(Hexametaphosphate) tau siv dav hauv cov nplaim taws xws li av nplaum refractory castable soaking rauv thiab cua sov.
Post lub sij hawm: Feb-13-2023
