1. Corrosion kuj tau muab faib ua ob hom: alkaline thiab acidic
Corrosion kuj tau muab faib ua ob hom: alkaline thiab acidic, thiab acid thiab alkali corrosion kuj tseem muaj. Yog li ntawd, nws yog ib qho tsim nyog kom nkag siab txog cov khoom ntawmrefractory bricksntawm cov khoom sib txawv kom ua tau zoo xaiv. Cov hom refractories cib tau muab faib ua silicon-aluminium series, magnesia series, chromium series, siliceous series, calcium aluminate series, composite khoom series, corundum series, thiab txhuas-carbon series.
2. Refractory cib hom series
High alumina bricks muaj mullite, uas muaj thermal shock zoo tab sis tsis zoo corrosion kuj. Corundum bricks muaj kev tiv thaiv zoo rau cov hlau alkali thiab muaj qhov hloov pauv me me. Yog tias nws nyob rau hauv qhov kub thiab txias thiab alkali hlau concentration, siab alumina cib tsis tuaj yeem siv ua hauv ob sab phlu.
Magnesia-chromium thiab chromium-corundum refractory bricks muaj siab refractory kuj thiab high-temperature zog. Nws tau zoo tsis kam rau alkaline siab, cov khoom siv zoo ntom thiab thermal bricctia-chromium cib, thiab zoo tsis kam rau slag yaig. Txawm hais tias chromium hluav taws cib muaj zog tiv thaiv alkali corrosion thiab txawm tias zoo tiv thaiv acid corrosion, chromium yog ib yam tshuaj lom thiab tau hais txog cov txheej txheem ntawm kev phom sij rau pej xeem. Cov khoom siv chromium tseem yuav tsum tau siv nrog ceev faj.
Calcium aluminate series muaj kev sib raug zoo nrog cov khoom siv txhuas, kev ruaj ntseg zoo nyob rau hauv high-temperature txo cua sov, thiab zoo corrosion kuj nyob rau hauv alkaline ib puag ncig.
Cov qauv siv lead ua ntawm corundum refractory firebricks tuaj yeem nqus alkali hlau ions ntawm cov khaubncaws sab nraud povtseg, thiab qhov ntim ntawm cov hluav taws kub refractory cib tsis hloov pauv ntau. Piv nrog rau lwm cov ntaub ntawv refractory, nws qhov ntim ruaj khov yog siab dua thaum nws tiv taus alkali yaig.
Magnesia-alumina spinel cib muaj cov qauv ruaj khov. Nws yog resistant rau kub kub, tshwj xeeb tshaj yog thaum siv nyob rau hauv ib tug alkaline cua, thiab muaj zoo heev tsis kam mus alkali yaig. Tsis tas li ntawd, refractory magnesia-aluminium spinel cib muaj cov thermal conductivity tsawg, me me thermal expansion coefficient, siab zog, siab hardness, muaj zog cuam tshuam thiab alkali yaig kuj.
Composite refractory bricks muaj kuj zoo tiv thaiv alkali corrosion. Composite refractory hluav taws cib muaj cov thermal shock stability, corrosion kuj, hnav tsis kam thiab zoo slag corrosion kuj. Ntxiv mus, zirconium corundum composite bricks kuj muaj zog tiv thaiv acid corrosion.
3. Aluminium carbon series tiv thaiv hauv ob sab phlu los ntawm embrittlement thiab puas
Aluminium carbon series refractory bricks feem ntau yog siv nyob rau hauv high-temperature furnace bottoms. Hauv kev txo cov huab cua, lawv muaj qhov tsis kam tiv thaiv alkali hlau yaig. Lawv tuaj yeem tsis tsuas yog ua kom qeeb ntawm cov txheej txheem alkali corrosion, tab sis kuj ua raws li cov tshauv refractory thiab slag, tiv thaiv cov hauv ob sab phlu los ntawm nkig. Ua kom puas.
Cov saum toj no series ntawm refractory bricks muaj cov khoom sib txawv. Tom qab nkag siab lawv, koj tuaj yeem xaiv qhov tsim nyog refractory hluav taws cib raws li cov xwm txheej ntawm cov kab sib txawv.
