Unsshaped refractory cov ntaub ntawv uas tau tsim los ntawm ramming (phau ntawv lossis tshuab) thiab tawv los ntawm cua sov siab tshaj qhov kub. Nws yog tsim los ntawm refractory aggregates, hmoov, binders, thiab insontures nrog cov qib, thiab yog tov nrog dej lossis lwm yam kua. Raws li cov ntaub ntawv qhia tawm, muaj av nplaum, cov av nplaum, zirconium, thiab zirconium silicia carbon carractory ramming cov ntaub ntawv.
Cov ntaub ntawv muaj pes tsawg leeg tuaj yeem npaj tau los ntawm kev sib xyaw ua ke thiab hmoov nplej ntawm ntau cov ntaub ntawv raws li qhov xav tau ntawm kev siv. Nyob rau tib lub sijhawm, txoj cai binders uas tsim nyog tau xaiv raws li cov ntaub ntawv ntawm kev hloov kho regregates thiab cov kev xav tau ntawm kev siv. Qee cov ntaub ntawv Ramming tsis txhob siv cov hlua khi tab sis tsuas yog ntxiv ib qho me me ntawm covlux los txhawb lawv cov sintering. Sodium silicate, Ethyl silicate thiab silica gel feem ntau siv raws li cov khoom siv hauv acidic ramming cov ntaub ntawv. Alkaline Ramming cov ntaub ntawv siv cov kev daws teeb meem aqueesium thiab sulfate, nrog rau phosphates thiab lawv cov polymers raws li binders. Cov teeb meem organic nrog cov ntsiab lus carbon high cov pa roj carbon uas ua rau cov pab pawg carbon rau ntawm cov carbon monoxide ntawm cov kub thiab ib ntus yuav siv tau ib ntus. Cov khoom siv chromium ramming cov ntaub ntawv feem ntau siv cov ntaub ntsev ntsev li ib phau. Kev loj thiab Corundum Ramfing cov khoom siv feem ntau siv phosphoric acid thiab inorganic tshuaj xws li txhuas phosphates, oxides, thiab sulfates li binders. Thaum phosphoric acid yog siv los ua phau ntawv, thaum lub sijhawm cia, phosphoric acid reacitation, uas solortifies thiab hardens, poob yooj yim rau kev tsim. Yog li ntawd, kom txuas lub txee ntev ntawm cov khoom siv sib txawv, yuav tsum tau ntxiv kom tiv thaiv lossis ncua qhov tshwm sim ntawm cov solidification thiab ua kom tawv. Oxalic acid feem ntau yog siv los ua cov tshuaj tiv thaiv. Carbonaceous Rambing cov khoom siv tsuas yog siv binders uas ua cov nyiaj pab carbon. Kev siv cov khoom siv asphalt tar los yog cov phau ntawv los ua kom muaj hlau los ntawm kev ntub dej, thiab tuaj yeem tiv thaiv dolomite los ntawm cov khoom siv roj dolomite.
Kev ua tau zoo Ramming cov ntaub ntawv feem ntau yog siv nyob rau hauv cov seem uas yog nyob rau hauv kev sib cuag nrog melt. Cov ntaub ntawv refractory yuav tsum muaj ntim zoo ruaj khov, ntom thiab corrosion tsis kam. Yog li ntawd, siab-sintering lossis hluav taws xob melting raw khoom siv feem ntau xaiv. Qhov ntau tshaj plaws qhov loj ntawm cov ntaub ntawv ramming yog cuam tshuam nrog kev siv feem thiab txoj kev tsim qauv. Qhov tseem ceeb tshaj plaws qhov loj me yog 8 hli. Feem ntau cov ntaub ntawv ramming muaj tsawg chav kub muaj zog ua ntej sinining, thiab qee tus muaj qhov qis nruab nrab kub. Tsuas yog thaum lawv sintered los yog cov pa roj carbon monoting nyob rau hauv phau ntawv no yog cinder yog cinder yog cinder yog cinder thaum cua sov tuaj yeem tau txais kev sib raug zoo. Cov khoom siv refractory thiab kev tawm tsam rau kev yaig los ntawm melts ntawm cov ntaub ntawv ramming tuaj yeem tau los ntawm xaiv cov khoom siv raw kev zoo thiab ceev kev tsim kho. Ntxiv rau kom muaj cov khoom ruaj khov thiab corrosion tsis kub, kev pabcuam lub neej nyob ntawm qhov loj ntawm kev ua ntej lossis siv cov sintering zoo thaum lub sijhawm siv thawj zaug. Yog tias cov cua sov sab sauv yog sterined raws li tag nrho, tsis muaj kab nrib pleb thiab tsis sib cais los ntawm cov txheej hauv qab, lub neej pabcuam tuaj yeem hloov kho.
Cov khoom lag luam
Daim ntawv thov cov kev tsim kho ntawm cov ntaub ntawv ramming yog qhov tseem ceeb heev, thiab nws qhov zoo yog cuam tshuam nrog kev siv cov nyhuv siv. Cov ntaub ntawv ramming feem ntau yog rammed los ntawm huab cua rauj lossis ramming tshuab. Cov tuab ntawm cov khoom ntxiv ntawm ib ramming yog li 50 ~ 150 hli. Refract cov ntaub ntawv ramming tuaj yeem tsim nyob rau hauv chav tsev kub. Yog tias siv cov khoom siv cov khoom siv hauv cov pa roj carbon monoxide tuaj yeem siv cov pab cuam cov pa roj carbon tsev yog siv los ua cov txheej txheem kub kho kom loj thiab tom qab ntawd tsim nws. Tom qab molding, cov qauv cua sov sib txawv yog saws raws li qhov ua kom tawv tawv ntawm cov sib tov los txhawb kev ua kom tawv lossis sintering. Txog cov ntaub ntawv muaj cov ntaub ntawv nyob hauv cov khoom siv inorganic, lawv tuaj yeem ua tau thiab ci tom qab kev ua kom tawv tawv rau tus kheej. Cov ntaub ntawv muaj cov thermoplastic cov pa roj carbon binders tuaj yeem ua kom tau yooj yim tom qab txias dua. Tom qab kev rhuav tshem, lawv yuav tsum tau nrawm nrawm rau carbonize ua ntej siv. Cov ntaub ntawv uas tsis muaj cov binders uas tawv dua ntawm chav sov feem ntau sintered nrog pwm tom qab tamping. Lub sintering ntawm refractory cov ntaub ntawv ua ntej siv, lossis nws tuaj yeem ua tiav los ntawm kev kho cua sov nrog cov thermal system thaum siv thawj zaug. Lub ci thiab cua sov system ntawm ramming cov ntaub ntawv sib txawv raws cov khoom sib txawv. Lub hom phiaj tseem ceeb ntawm kev ua kom zoo nkauj yog tsim cov khoom siv hluav taws xob uas tau sib tshuam, cov khoom siv hluav taws xob tsis sib xws thiab cov hluav taws xob hluav taws xob. Ntxiv rau kev siv los ua cov txheej txheem tag nrho, nws kuj tseem siv tau los tsim cov khoom ua ntej loj.
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lub npe |
Nroog zej tsoom fwv |
Aluminium Magnesium |
Magnesium txhuas |
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Hom |
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tshuaj lom neeg al2o3% ntau dua lossis sib npaug |
80 |
85 |
70 |
40 |
30 |
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Mego% ntau dua lossis sib npaug |
/ |
/ |
8 |
50 |
/60 |
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Refractoriness degree ntau dua los yog sib npaug |
1790 |
1790 |
1790 |
1790 |
1790 |
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Kev ua haujlwm kub txog qib siab dua lossis sib npaug |
1790 |
1790 |
1790 |
1790 |
1790 |
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Bulk ntom g / cm3 ntau dua lossis sib npaug |
2.75 |
2.6 |
2.6 |
2.7 |
2.75 |
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Cim npe nrov: Refractory Ramming Loj, Tuam Tshoj Refractory Rammer Corners, Chaw muag khoom, Hoobkas