Performance Thiab Physicochemical Indicators Of Magnesia Alumina Spinel Bricks

Performance thiab physicochemical ntsuas ntawm magnesia alumina spinel cib
Magnesium aluminium spinel bricks muaj cov yam ntxwv zoo thermal shock stability, siab mechanical zog ntawm qhov kub thiab txias, siab load softening kub, zoo slag kuj, thiab muaj zog tsis kam mus nqus volatility.
Noj RMA series magnesia alumina spinel cib ua piv txwv, lawv lub cev thiab tshuaj ntsuas cov ntsiab lus suav nrog MgO cov ntsiab lus ntawm 82% mus rau 88%, Al2O3 cov ntsiab lus ntawm 6% mus rau 9%, SiO2 cov ntsiab lus ntawm 0.5% mus rau 1.0%, qhov ntom ntom ntawm 2.80 mus rau 2.90 g / cm3, qhov kub thiab txias ntawm 0.2% 45 mus rau 60 MPa, load softening kub ntawm 1650 txog 1700 degree, thermal shock stability (1100 degree, dej{18}}txias) tsis tsawg tshaj li 10 npaug, thiab thermal conductivity (1000 degree) ntawm 2.7 txog 2.9 W/m · K.
In terms of bulk density and porosity, products with low porosity (less than 9%) can achieve a bulk density of 3.22-3.23 g/cm ³; Qhov ntom ntom ntawm qhov pores nrog qhov porosity ntawm 12-17% yog 2.9-3.1 g / cm³. Vim tias qhov sib txuas ncaj qha ntawm cov nplej siab melting point, lub zog yog siab ntawm qhov kub thiab txias, thiab qhov kub thiab txias hauv qab load tuaj yeem ncav cuag 1700-1750 degree, nrog rau cov creep tsis kam.
Nyob rau hauv cov nqe lus ntawm slag kuj, nws muaj zog tsis kam mus rau infiltration ntawm silicate thiab hlau muaj slag, tsis yooj yim rau tsim ib tug tuab metamorphic txheej, thiab muaj zoo heev tsis kam mus rau ncaj qha yaig los ntawm slag.
Nyob rau hauv cov nqe lus ntawm tsis kam mus rau lub tshuab nqus tsev vacuum volatility, nws muaj tsawg volatility nyob rau hauv lub tshuab nqus tsev vacuum thiab zoo kuj mus nqus volatility.
Nyob rau hauv cov nqe lus ntawm thermal poob siab stability, lub coefficient ntawm thermal expansion yog tsis tshua muaj (8.2 × 10 ⁻⁶ / degree), thiab lub thermal shock kuj yog zoo. Lub voj voog dej txias ntawm 1300℃tuaj yeem ncav cuag 6-13 zaug; Thaum muaj ntau MgO lossis A12O3 hauv cib, nws cov thermal shock kuj yuav raug txo.
Yam khoom tseem ceeb
Magnesium aluminium spinel cib feem ntau suav nrog cov pob zeb uas tsis tau hlawv thiab raug rho tawm haujlwm, thiab tseem tuaj yeem ua rau cov khoom siv amorphous refractory siv spinel.
Burnt magnesia alumina spinel cib
Magnesia alumina spinel bricks are fired at high temperatures and have characteristics such as high density, low porosity, and high strength. Nws cov txheej txheem ntau lawm zoo ib yam li cov pob zeb magnesia, tab sis cov khoom xyaw yog tsim los ntawm sintered lossis fused spinel. Lub billet yuav tsum tau tsim nyob rau hauv siab siab (feem ntau yog 120-200MPa) thiab raug rho tawm haujlwm ntawm qhov kub thiab txias (xws li 1750 degree). Tom qab tua hluav taws, qhov porosity tuaj yeem tsawg dua 9%, thiab qhov ntom ntom tuaj yeem ncav cuag 3.22-3.23 g / cm³. Nws muaj lub zog siab ntawm chav tsev kub thiab qhov kub thiab txias, thiab qhov kub thiab txias hauv qab load yog 1700-1750 degree. Nws muaj zoo heev slag kuj thiab thermal shock stability.
Tsis txhob hlawv magnesia alumina spinel cib
Tsis yog raug rho tawm haujlwm magnesia alumina spinel cib yog ib yam ntawm cov khoom tseem ceeb.
Amorphous refractory khoom
Amorphous refractory cov ntaub ntawv yog tsim los ntawm hluavtaws spinel li raw cov ntaub ntawv, siv los tsim ib tug qauv thiab tshuaj tsuag kho linings.
Classified los ntawm spinel synthesis method
Raws li cov txheej txheem synthesis ntawm spinel raw cov ntaub ntawv, lawv tuaj yeem muab faib ua sintered spinel cib thiab fused spinel cib. Cov khoom siv hauv cov khoom xyaw yog tsim los ntawm sintered synthesized spinel los yog fused synthesized spinel, los yog sib tov ntawm ob qho tib si.