Amorphous refractory khoom uas yog tsim los ntawmramming loj(manual los yog mechanical) thiab hardened nyob rau hauv cua sov tshaj li ib txwm kub. Nws yog tsim los ntawm refractory aggregates, hmoov, binders, thiab admixtures nrog ib tug tej qib, thiab yog tov nrog dej los yog lwm yam kua. Raws li kev faib khoom, muaj cov khoom siv alumina, av nplaum, magnesium, dolomite thiab zirconium ramming.
1. Kev sib xyaw
Raws li kev xav tau ntawm kev siv, ramming cov ntaub ntawv tuaj yeem npaj los ntawm cov khoom siv refractory aggregates thiab hmoov ntawm ntau yam ntaub ntawv. Nyob rau tib lub sijhawm, cov binders tsim nyog raug xaiv raws li cov khoom siv ntawm cov khoom siv refractory aggregates thiab siv cov kev cai. Qee cov ntaub ntawv ramming tsis siv cov binders tab sis tsuas yog ntxiv me me ntawm flux los txhawb lawv cov sintering. Sodium silicate, ethyl silicate thiab silica gel feem ntau yog siv los ua binders hauv cov ntaub ntawv acidic ramming. Alkaline ramming cov ntaub ntawv siv aqueous daws ntawm magnesium chloride thiab sulfate, nrog rau phosphates thiab lawv cov polymers ua binders. Carbon-muaj cov organic teeb meem thiab cov ntaub ntawv ib ntus kuj tseem siv tau rau qhov kub thiab txias. Chromium ramming cov ntaub ntawv feem ntau siv Glauber cov ntsev ua cov ntawv khi. High-aluminium thiab corundum ramming cov ntaub ntawv feem ntau siv phosphoric acid thiab inorganic tshuaj xws li txhuas phosphates, sulfates, thiab chlorides ua binders. Thaum phosphoric acid yog siv los ua ib phau ntawv, thaum lub sij hawm cia, phosphoric acid reacts nrog active alumina nyob rau hauv cov ntaub ntawv ramming los tsim dej-insoluble txhuas orthophosphate nag lossis daus thiab solidify. Poob ntawm plasticity ua rau kev tsim kho nyuaj. Yog li ntawd, txhawm rau txuas lub neej txee ntawm ramming pawg, yuav tsum tau ntxiv cov khoom tsim nyog los tiv thaiv lossis ncua qhov tshwm sim ntawm coagulation thiab hardening. Oxalic acid feem ntau yog siv los ua cov khoom noj.
2. Kev ua tau zoo
Feem ntau, cov ntaub ntawv ramming feem ntau yog siv rau hauv qhov chaw uas muaj kev sib cuag nrog cov yaj. Cov khoom siv refractory yuav tsum muaj ntim zoo, ceev thiab corrosion tsis kam, yog li muaj hluav taws xob raw khoom siv feem ntau siv. Qhov siab tshaj plaws particle loj ntawm cov khoom siv ramming muaj feem xyuam rau txoj kev tsim kho ntawm qhov yuav tsum tau siv, thiab qhov tseem ceeb ntawm qhov loj me yog 8 hli. Feem ntau cov ntaub ntawv ramming muaj qhov kub tsis tshua muaj zog ua ntej sintering, thiab qee qhov muaj qhov kub nruab nrab lub zog. Tsuas yog thaum lawv rhuab thiab sintered lawv thiaj li tau txais ib daim ntawv cog lus zoo. Lub refractory kev ua tau zoo thiab tsis kam mus rau molten corrosion ntawm ramming cov ntaub ntawv tuaj yeem tau los ntawm kev xaiv cov khoom zoo raw, kho qhov tsim nyog proportions thiab ua tib zoo tsim. Ntxiv nrog rau kev ruaj ntseg siab thiab corrosion kuj ntawm qhov kub thiab txias, ramming cov ntaub ntawv kuj muaj lub neej ua haujlwm siab. Rau qhov loj, nws nyob ntawm qhov ci ua ntej siv lossis sintering zoo thaum siv thawj zaug. Yog tias cov cua sov saum npoo yog sintered tag nrho, tsis muaj kab nrib pleb thiab tsis sib cais los ntawm cov txheej hauv qab, kev pab cuam lub neej tuaj yeem txhim kho.
3. Cov khoom siv ramming siv hauv cov iav kiln
ib. Cov khoom tseem ceeb ntawm zircon xuab zeb ramming loj yog (%): ZrO{{0}}, SiO2 32, Al2O3 2, Fe2O3 0}.5, qhov ntim ceev yog ntau dua 3g / cm3, lub refractoriness yog siab tshaj 1790 degree, thiab qhov siab tshaj particle loj yog 0.5 hli. Lub binder yog aluminium dihydrogen phosphate ua los ntawm orthophosphoric acid thiab aluminium hydroxide. Nws muaj kev sib raug zoo, siab zog thiab kub ua hauj, tab sis nws yog ib qho yooj yim kom qhuav thiab tawv, thiab nws tsis haum rau lub sij hawm ntev cia. Nws yog corrosive rau ntawm daim tawv nqaij thiab tsis yooj yim rau siv.
b. Zirconium corundum ramming khoom (Fabkis hom ERSOL) feem ntau siv AZS cib khib nyiab ua cov khoom siv refractory. Cov muaj pes tsawg leeg ntawm cov khoom siv ramming no yog (%): Al2O3 48, ZrO2 30, SiO2 20, cov theem siv lead ua yog -Al2O3, mullite, baddeleyite, iav theem, thiab qhov siab tshaj plaws particle qhov loj yog 5mm. Thaum siv, koj tsuas yog yuav tsum tau ntxiv dej thiab do. Qhov ntim ceev yog 3.2g / cm3, qhov porosity yog 12%, qhov nyiam ntawm cov npuas npuas tsis muaj zog, thiab cov iav ua kua dej yaig yog qhov muaj zog heev ntawm 1400 degree. Nws kuj tseem siv tau los ua ib txheej sealing thiab slurry.
c. Tsawg shrinkage AZSC ramming pawg Nws qhia txog qee yam ntawm cov khoom siv chromium rau hauv cov ntsiab lus ntawm AZS. Lub ntim ntom ntom yog ntau dua 2.9g / CM3, tus reburning linear shrinkage (14}} 0 degree} 0 degree tau zoo dua li ob ramming cov ntaub ntawv. Nws kuj tseem siv tau los ua cov txheej txheem sealing thiab cov khoom siv casting.
