1. Muaj qhov sib txawv ntawm ob theem siv lead ua
Andalusite mullite cib thiab andalusitesiab alumina cibtxhua tus muaj lawv tus kheej zoo. Txawm hais tias cov khoom tseem ceeb ntawm mullite cib thiab siab alumina cib yog alumina, lawv cov theem siv lead ua txawv.
2. Kev piav qhia ntawm ob theem siv lead ua
Thaum andalusite yog rhuab mus rau 1300 degree, nws yuav tig mus rau hauv mullite, uas muaj cov yam ntxwv ntawm tsis kam mus ceev txias, muaj zog tej yam kuj, thiab siab load conversion point. Mullite nws tus kheej muaj tsawg thermal expansion thiab tuab crystals thaum lub sij hawm hloov dua siab tshiab. Andalusite tsis tas yuav tsum tau calcined thiab tuaj yeem ncaj qha ntxiv rau kev raug rho tawm haujlwm lossis tsis raug hluav taws kub mullite cib thiab siab alumina cib. Andalusite muaj qhov zoo ntawm creep kuj. Thaum siv, impurities tuaj yeem ua rau ntxov ntxov softening ntawm refractory bricks thiab muaj kev cuam tshuam zoo rau creep. Yog li ntawd, ib qho kev faib ua feem ntawm andalusite yog ntxiv rau mullite cib los yog siab alumina cib. Ua kom nws tiv taus qhov kub thiab txias, ceev ceev thiab cua kub ceev.
3. Kev ua haujlwm siab ntawm alumina cib
Andalusite high-alumina cib yog ua los ntawm andalusite ua cov khoom tseem ceeb, ntxiv bauxite, thiab yog tsim los ntawm high-pressure molding, ziab, thiab firing ntawm 1500 degree. Cov yam ntxwv ntawm andalusite siab alumina bricks yog kub tsis kam, siab softening kub nyob rau hauv load, tsis tshua muaj creep tus nqi ntawm high kub, ruaj khov ntim ntawm siab kub tsis ntim, me me thermal expansion coefficient thiab tsawg thermal conductivity thaum siv. Lub refractory degree ntawm andalusite yog 1830 degree, thiab nws yog resistant rau tshuaj corrosion. Ntxiv andalusite rau high-alumina refractory cib tuaj yeem ua rau lub siab-alumina cib tau hnav tsis kam, siab dua qhov kub thiab txias, thiab zoo dua tiv thaiv kom txias thiab cua sov sai. Nws tuaj yeem densify cib pob qij txha ntawm qhov kub thiab txias, txhim kho tag nrho compactness ntawm high-alumina cib masonry, thiab yog li txhim kho slag permeability kuj.
4. Andalusite-mullite muaj qhov zoo ntawm oxidation tsis kam
Andalusite mullite cib yog ib lub cib refractory ua los ntawm andalusite thiab mullite nyob rau hauv sib txawv proportions. Cov cib no muaj kev tiv thaiv oxidation zoo, muaj zog tiv thaiv hluav taws, siab compressive zog, tsis tshua muaj lub ntiajteb txawj nqus thiab cov khoom tiv thaiv. Zoo, kub siab flexural zog thiab kev pab lub neej ntev.
Hauv luv luv, andalusite mullite thiab andalusite siab alumina cib muaj qhov zoo sib xws tab sis kuj zoo sib txawv. Andalusite mullite cib yog kim dua andalusite siab aluminium cib, thaum andalusite high-alumina cib muaj zog kub corrosion kuj. Andalusite-mullite cib muaj qhov yooj yooj yim thiab muaj zog tiv thaiv tev.
