Hom firebricks yuav muab faib ua
Firebrick raws li lub npe qhia yog ib hom kub kub resistant cib, kuj hu ua hluav taws cib, muaj ib tug tej yam zoo li thiab loj ntawm refractory ntaub ntawv, raws li cov txheej txheem kev npaj yuav muab faib mus rau hauv hluav taws cib, tsis raug rho tawm cib, hluav taws xob melting cib. , refractory tshav kub rwb thaiv tsev cib; Raws li cov duab thiab qhov loj me, nws tuaj yeem muab faib ua cov qauv cib, cov cib zoo tib yam thiab cov cib tshwj xeeb.
Raws li qhov sib txawv ntawm firebricks, nws tuaj yeem muab faib ua tsib pawg: silica-aluminium series firebricks, alkaline series firebricks, carbon-muaj firebricks, zirconia-muaj firebricks, thiab tshav kub-insulating firebricks.
Ua ntej, silicon aluminium series firebrick, suav nrog cov hauv qab no:
1, siab aluminium refractory cib, nrog siab bauxite clinker ua cov khoom siv tseem ceeb, cov av nplaum mos thiab cov ntaub ntawv pov tseg cov ntaub ntawv ua kua raws li cov ntaub ntawv, ntau qhov sib piv ntawm cov av nkos, kev kub siab molding, ziab, kub firing, Al2O3 cov ntsiab lus ntawm ntau tshaj 75. % cov khoom nruab nrab refractory. Raws li cov ntsiab lus Al2O3, high-aluminium cib tuaj yeem muab faib ua plaub qib: super high-aluminium cib, thawj qib high-aluminium cib, qib thib ob high-aluminium cib thiab qib peb qib high-aluminium cib. Super siab txhuas cib yog Al2O3 tsis tsawg tshaj 80%, thawj lub siab txhuas cib yog Al2O3 tsis tsawg tshaj li 75%, qhov thib ob siab txhuas cib yog Al2O3 tsis tsawg tshaj li 65%, lub thib peb siab txhuas cib yog Al2O3 tsis tsawg tshaj li 55%. . High aluminium bricks yog dav siv nyob rau hauv hlau thiab steel kev lag luam, non-ferrous hlau kev lag luam thiab lwm yam lag luam.
2, av nplaum cib, av nplaum clinker li aggregate, refractory av nplaum raws li ib tug binder ua los ntawm Al2O3 cov ntsiab lus ntawm 30-48% refractory khoom. Feem ntau nrog cov av nplaum tawv ua cov khoom siv tseem ceeb, cov khoom siv ua ntej calcined mature, thiab tom qab ntawd nrog cov av nplaum mos, ib nrab qhuav los yog yas molding, qhov kub yog 1300-1400 degree raug rho tawm haujlwm rau hauv cov khoom siv av nplaum, nws yog qhov cub tawg, Kub moj tej tawg rauv, cua sov rauv, fais boiler, txiv qaub kiln, teb kiln, ceramic kiln feem ntau siv nyob rau hauv lub refractory cib.
3, silicon cib, hais txog cov firebrick uas muaj SiO₂ cov ntsiab lus ntawm ntau tshaj 93%, yog lub ntsiab ntau yam ntawm acid firebrick. Nws yog tsuas yog siv rau masonry coke ncu, tab sis kuj rau ntau yam iav, ceramic, carbon calciners, thiab nyob rau hauv high-temperature bearing qhov chaw ntawm kub moj tej tawg furnaces, tab sis nws tsis haum rau thermal khoom hauv qab 600 degree thiab nrog loj kub hloov.
4, corundum refractory cib, hais txog Al2O3 cov ntsiab lus tsis tsawg tshaj li 90%, corundum raws li lub ntsiab theem ntawm refractory cib, muab faib ua sintered corundum cib thiab fused corundum cib.
Thib ob, alkaline series refractory cib, hais txog alkaline oxide thiab MgO thiab CaO raws li cov khoom tseem ceeb ntawm cov khoom refractory, ntau yam tseem ceeb yog:
1. Magnesian firebrick hais txog firebrick nrog magnesite li raw khoom, square magnesite raws li lub ntsiab crystalline theem, thiab MgO cov ntsiab lus ntawm 80-85% lossis ntau dua. Magnesia refractory cib yog cov khoom tseem ceeb ntawm alkaline refractory cib, siab refractories, zoo tiv thaiv alkaline slag thiab hlau slag, feem ntau yog siv nyob rau hauv qhib hearth rauv, oxygen converter, hluav taws xob rauv thiab superior hlau smelting.
2, dolomite cib, yog ib hom alkaline refractory cib tsim los ntawm dolomite ua cov khoom tseem ceeb, dav siv nyob rau hauv alkaline converter, kuj yuav siv tau raws li hauv ob sab phlu ntawm tej qhov cub refining pob.
3. Magnesium olivine firebrick yog ib hom firebrick nrog magnesium olivine MgO-SiO₂ ua lub ntsiab tivthaiv. Nws yog tsuas yog siv rau regenerative lattice bricks nyob rau hauv qhib-hearth rauv, ingot cib, rauv hauv qab ntawm cua sov rauv thiab tooj liab smelting rauv.
3. Carbon-muaj firebricks yog ua los ntawm cov pa roj carbon los yog carbon compounds thiab muab faib ua:
1. Cov pa roj carbon cib yog cov khoom siv kub kub nruab nrab refractory ua los ntawm cov khoom siv roj carbon monoxide ua cov khoom siv tseem ceeb thiab ntxiv cov khoom tsim nyog ntawm cov ntawv khi. Carbon bricks yog dav siv nyob rau hauv nteg hauv qab, hearth, plab thiab hauv qab ntawm blast furnace.
2, graphite refractory khoom, ntuj graphite li raw cov ntaub ntawv, nrog av nplaum ua ib daim ntawv cog lus ua los ntawm refractory ntaub ntawv. Cov khoom tseem ceeb ntawm hom no yog graphite av nplaum crucible, ntsaws cib rau casting steel, dej cib thiab steel nruas hauv ob sab phlu.
3, silicon carbide refractory khoom, silicon carbide SiC li raw khoom ntawm cov khoom siv refractory siab heev, nws hnav tsis kam thiab corrosion kuj zoo, siab kub zog, siab thermal conductivity, linear expansion coefficient yog me me, zoo thermal shock resistance, nyob rau hauv hlau thiab steel smelting, nws yuav siv tau rau steel chim hauv ob sab phlu, dej ntsaws taub hau, moj tej tawg rauv hauv qab.
Plaub, zirconium refractory cib, belongs rau ib yam ntawm cov khoom siv acid, yog ua los ntawm ntuj zircon xuab zeb li raw cov ntaub ntawv, zirconium refractory cib muaj zoo slag kuj, me me thermal expansion tus nqi, siab softening kub nyob rau hauv load, siab hnav tsis kam, zoo thermal shock. tsis kam
1, zircon cib, slag, molten hlau yaig thiab thermal shock kuj yog zoo, siv los ua stainless hlau cask hauv ob sab phlu, nruam casting cask hauv ob sab phlu, cam khwb cia cib, tes tsho cib thiab kub induction rauv hauv ob sab phlu.
2, AZS fused cib, tseem hu ua fused corundum cib, tau dhau los ua ib feem tseem ceeb ntawm cov iav kiln tseem ceeb cov khoom siv refractory, nws tiv taus qhov yaig ntawm iav kua.
3, zirconium mullite fused cib siv lead ua, zoo li cua sov, zoo heev tiv taus rau slag yaig muaj peev xwm, siv nyob rau hauv metallurgical cua sov rauv, soaking rauv, calcium carbide rauv qhov hluav taws xob.
Thib tsib, tshav kub rwb thaiv tsev refractory cib, tseem hu ua lub teeb refractory cov ntaub ntawv, hais txog siab porosity, tsawg ntim ntom, tsis tshua muaj thermal conductivity ntawm cov ntaub ntawv refractory, tuaj yeem muab faib ua:
1, high aluminium tshav kub rwb thaiv tsev lub teeb firebrick, yog bauxite cov ntsiab lus tsis tsawg tshaj li 48% ntawm cov tshav kub rwb thaiv tsev cib, yuav siv tau rau masonry rwb thaiv tsev txheej thiab tsis muaj zog high-temperature molten khoom yaig thiab yaig ntawm ib feem, qhov sib cuag kub. yuav tsum tsis txhob siab tshaj 1350 degree.
2, Mullite thermal rwb thaiv tsev refractory cib, nrog cov khoom zoo bauxite clinker ua cov khoom siv tseem ceeb, ua npuas ncauj lossis tshuaj siv los tsim cov qauv ntxeem tau, cov khoom xyaw thiab dej sib xyaw rau hauv cov av nkos los yog av nkos, kom extrude molding tom qab kub kub raug rho tawm haujlwm zoo thermal rwb thaiv tsev cib. tuaj yeem tiv tauj ncaj qha rau cov nplaim taws, nrog rau qhov kub thiab txias tsis kam, siab zog, zoo zog txuag cov nyhuv, siv nyob rau hauv pyrolysis rauv, kub moj tej tawg rauv, ceramic roller kiln thiab ntau yam kuj rauv hauv ob sab phlu.
3, av nplaum hluav taws kub rwb thaiv tsev refractory cib, yog ua los ntawm refractory av nplaum ua cov khoom tseem ceeb ntawm refractory refractory cib, nrog refractory av nplaum, drift hlaws thiab lwm yam additives thiab sawdust, los ntawm batching, mix molding, ziab, hlawv los tsim refractory khoom.
4, bleached hlaws cib yog cov khoom siv tseem ceeb ua los ntawm cov khoom siv hluav taws xob rwb thaiv tsev refractory. Floating hlaws yog hollow aluminium silicate iav spheres flotation los ntawm ya tshauv ntawm thermal fais fab nroj tsuag. Bleached hlaws cib tuaj yeem tsim los ntawm txoj kev qhuav qhuav.
5, alumina hollow pob cib, raws li alumina hollow pob thiab aluminium oxide hmoov ua cov ntaub ntawv tseem ceeb, ua ke nrog lwm cov khoom sib txuas, tom qab 1750 degree kub kub firing, qhov siab tshaj plaws siv kub ntawm 1800 degree, cov khoom siv lub zog siab, ob peb zaug ntawm cov khoom siv dav dav. Nws tau dav siv nyob rau hauv kub kub thiab ultra-siab kub kilns xws li gasifier nyob rau hauv petrochemical kev lag luam, carbon dub industrial reactor thiab induction rauv nyob rau hauv metallurgical kev lag luam, thiab tau tiav heev txaus siab zog-txuag nyhuv. Alumina hollow pob refractoriness tuaj yeem ncav cuag ntau tshaj 1750 degree, zoo thermal stability, reburning kab hloov tus nqi me me, ruaj, muaj zog thermal rwb thaiv tsev yam ntxwv, thermal conductivity tsawg.
