Nyob rau hauv siab-kub kev lag luam xws li steel smelting, tsim cov ntaub ntawv tsim hluav taws xob, thiab tshuaj lom neeg cov tshuaj tiv thaiv, cov khoom siv hauv ob sab phlu ntsib peb qhov teeb meem loj: tsis tu ncua siab - kub raug, siab - cov ntaub ntawv ceev ceev, thiab tshuaj lom neeg corrosion los ntawm acidic thiab alkaline xov xwm.Hnav resistant castables, raws li ib pawg tseem ceeb ntawm monolithic refractories, tau dhau los ua cov cuab yeej tiv thaiv kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob vim lawv qhov yooj yim ntawm - qhov chaw casting, ntom hnav tsis kam, thiab yoog raws rau kev ua haujlwm nyuaj. Cov ntaub ntawv qhia tau hais tias cov ntaub ntawv refractory suav tsuas yog 3% -5% ntawm tag nrho cov peev txheej hauv cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob, tab sis ncaj qha cuam tshuam ntau dua 30% ntawm qhov zaus ntawm qhov cub kaw rau kev saib xyuas thiab 20% ntawm kev siv hluav taws xob. High-zoo hnav resistant castables tuaj yeem txuas lub neej kev pabcuam ntawm cov khoom siv hauv ob sab phlu los ntawm 3-5 zaug, txo cov nqi tsim khoom.
1.Core yam ntxwv ntawm hnav resistant castables
Qhov kev ua tau zoo ntawm kev hnav resistant castables stems los ntawm kev tsim qauv tsim thiab cov txheej txheem ntau lawm:
1.1Extreme abrasion tsis kam:
Siv high-hardness aggregates xws li fused alumina, silicon carbide, thiab silicon nitride (Mohs hardness Ntau dua los yog sib npaug rau 9), ua ke nrog cov hlau fiber ntau reinforcement system, ib qho peb -sib nqus network qauv tsim los tiv thaiv kev tawg tawm. Tus nqi coj tuaj yeem tswj tau tsawg dua lossis sib npaug li 5 cm³ / 1000 kiv puag ncig, uas txhim kho hnav tsis kam los ntawm ntau dua 50% piv nrog cov khoom siv refractory.
1.2 Dav -qhov hluav taws kub tsis kam:
Nyob ntawm seb muaj pes tsawg leeg, qhov refractoriness nyob ntawm 1200 txog 1800 degree. Ntawm lawv, corundum-raws li thiab silicon carbide-raws li cov khoom tuaj yeem tiv taus qhov kub siab tshaj 1500℃, thiab qhov siab - kub hloov pauv tus nqi tsawg dua lossis sib npaug li ± 0.5%, kom ntseeg tau tias ntim ruaj khov thiab tsis tawg ntawm qhov kub thiab txias.
1.3 Muaj zog tiv thaiv kev yaig:
Nrog rau qhov tseeb ntawm cov khoom sib sau thiab cov ntawv khi, nws tuaj yeem hloov kho rau qhov sib txawv corrosive ib puag ncig xws li kua qaub thiab alkali, nrog rau kev tiv thaiv corrosion tsawg dua los yog sib npaug li 0.1 hli / xyoo, tiv taus qhov yaig thiab kev puas tsuaj ntawm molten slag thiab chemical media.
1.4 Kev tsim kho yooj yim:
Nws yog tov thiab nrum rau ntawm -site, tsis tas yuav tsum tau prefabrication thiab firing. Nws tuaj yeem hloov kho kom haum rau cov qauv tshwj xeeb xws li cov khoom siv hluav taws xob tsis sib xws thiab cov kav dej tsis zoo. Lub voj voog kev tsim kho yog luv luv los ntawm 40% piv nrog cov tsoos cib hauv ob sab phlu, ua rau nws tshwj xeeb tshaj yog haum rau kev saib xyuas xwm txheej ceev.
2.Application ntawm hnav resistant castables
Daim ntawv thov kev hnav cov castables tau nkag mus rau hauv cov txheej txheem tseem ceeb ntawm kev lag luam siab - kub, dhau los ua ib qho kev lav ris rau cov khoom siv tseem ceeb.
2.1 Metallurgical Kev Lag Luam: Kev Tiv Thaiv Cov Ntsiab Cai ntawm Cov Hluav Taws Xob thiab Cov Hluav Taws Xob
Lub tshuab hluav taws xob tawg, hloov pauv, thiab hluav taws xob rauv hauv ob sab phlu: tiv taus qhov kub siab tshaj 1500 degree, molten hlau yaig, thiab slag corrosion, ncua lub neej ntawm lub qhov cub thiab qhov cub qhib rau 8-10 xyoo thiab txo kev tu ntau zaus los ntawm 60% piv rau cov tsoos cib linings.
Sintering silos thiab feeders: tiv taus siab - siv los ntawm ore thiab coke, txo cov nqi kho khoom.
2.2 Kev Lag Luam Khoom Siv Hauv Tsev: Cement Kiln Efficiency Optimization
Cement rotary kiln inlet thiab tertiary cua duct luj tshib: withstands kub ntawm 1450℃thiab siab -ceev scouring ntawm clinker hais, ua rau lub kiln qhov kev khiav hauj lwm txhua xyoo mus rau ntau tshaj 95%.
Cyclone separators thiab preheaters: optimize tshav kub pauv efficiency, txo cov cua sov los ntawm 20%, thiab pab txuag lub zog thiab txo kev noj.
2.3 Lub Hwj Chim thiab Kev Tiv Thaiv Ib Cheeb Tsam Kev Lag Luam: Kev Hloov Kho rau Ib puag ncig hnyav
Boilers and waste incinerators in thermal power plants: Resistant to high-temperature flue gas (>1000 degree), coal tshauv yaig, thiab corrosion los ntawm acidic gases (HCl, SO₂), txuas lub incinerator lub neej mus rau ntau tshaj 8 xyoo;
Coal unloading trenches thiab slag tshem tawm: tiv thaiv cov thee thaiv qhov cuam tshuam thiab cov hmoov tshauv hnav, txo qhov kev pheej hmoo ntawm cov yeeb nkab tawg ntau dua 60%.
2.4 Kev lag luam tshuaj: Dual tiv thaiv corrosion thiab siab
Reactor thiab pyrolysis rauv hauv ob sab phlu: withstands kub siab tshaj 800℃thiab siab siab tshaj 10MPa, resists acid thiab alkali media corrosion, thiab txo tus nqi corrosion los ntawm 90%;
Chemical Rhiav hauv pem teb: Ua ib qho seamless hnav- txheej tiv thaiv, tiv thaiv cov tshuaj nkag mus thiab hnyav dov, nrog lub neej kev pab ntau tshaj 10 xyoo.
3.Kev xaiv ntawm hnav resistant castables
Kev xaiv ntawm hnav-cov resistant refractory castables yuav tsum ua raws li cov hauv paus ntsiab lus ntawm kev ua haujlwm zoo sib xws thiab qhov tseem ceeb ntawm kev ua haujlwm:
3.1 Kev xaiv raws li qhov ntsuas kub:
High-Alumina castable (Al₂O₃ Ntau dua lossis sib npaug li 50%) yuav tsum raug xaiv rau Tsawg dua lossis sib npaug li 1200℃; Mullite lossis qis- cement castable yuav tsum raug xaiv rau 1200-1500℃; Corundum lossis silicon carbide castable yuav tsum tau xaiv rau ntau dua lossis sib npaug li 1500 degree.
3.2 Raws li ib puag ncig compatibility:
Xaiv cov ntaub ntawv silica los yog mullite rau acidic ib puag ncig, xaiv magnesia lossis corundum cov ntaub ntawv rau alkaline ib puag ncig, thiab ua ntej steel fiber reinforced cov khoom rau siab -coj qhov chaw;
3.3 Qhov taw qhia tseem ceeb pov thawj:
Lub refractoriness yuav tsum yog 200-300℃siab tshaj qhov ua hauj lwm tej yam kev mob, lub thermal shock resistance (1100℃dej txias voj voog) Ntau tshaj los yog sib npaug rau 20 npaug, thiab chav tsev kub compressive zog (tom qab ziab ntawm 110 degree) siab tshaj los yog sib npaug rau 50MPa. Nyob rau tib lub sijhawm, cov neeg muag khoom uas muaj ntawv pov thawj ISO thiab cov ntawv tso cai tsim khoom yuav tsum raug xaiv, thiab peb yuav tsum muaj cov ntaub ntawv xeem thib peb -. Kev simulated kev ua haujlwm yuav tsum tau ua thaum tsim nyog kom tsis txhob ua raws li tus nqi qis ntawm tus nqi ntawm kev siv nyiaj.
4.Standardize kev tsim kho thiab tu
Kev tsim kho zoo ncaj qha cuam tshuam rau lub neej kev pab cuam ntawm castable refractory thiab yuav tsum nruj me ntsis ua raws li cov txheej txheem hauv qab no:
4.1 Mixing thiab pouring:
Siv lub tshuab ua kom qhuav kom qhuav rau 2 feeb, tom qab ntawd ntxiv 6-8% dej thiab sib tov rau 3-5 feeb. Ncuav rau hauv cov khaubncaws sab nraud povtseg (txhua txheej tsawg dua lossis sib npaug li 300mm), thiab siv lub vibrator immersion kom compact kom txog rau thaum cov slurry nto rov qab mus rau saum npoo thiab cov pa npuas raug tshem tawm.
4.2 Kho thiab Demolding:
Kho ib txwm rau 72 teev ntawm 20-25℃thiab av noo> 90%. Tsis txhob watering tom qab demolding kom ruaj khov lub zog txhim kho.
4.3 Qhov cub ci thiab ua haujlwm:
Ci raws li cov cua kub nkhaus (50℃/ h rau 600 degree, ces 10℃/ h rau lub hom phiaj kub). Thaum lub sijhawm ua haujlwm, xyuas cov ntaub hauv ob sab phlu thiab tawg txhua hli thiab kho lawv hauv zos raws sijhawm.
Nrog kev ua tiav tsis tu ncua hauv cov thev naus laus zis xws li qis- cement bonding, gradient structural design, thiab self-leveling vibration-free compounding,hnav resistant castablestab tom txhim kho mus rau lub zog siab dua, kev ua haujlwm ntev dua, thiab hloov tau zoo dua. Los ntawm steel blast furnaces mus rau cement kiln, los ntawm pov tseg incineration mus rau tshuaj lom neeg cov tshuaj tiv thaiv, nws tau dhau los ua ib tug tseem ceeb kev txhawb nqa rau lub siab {{1}kev loj hlob zoo ntawm siab{2}} kub industries vim nws irreplaceable tiv thaiv kev ua tau zoo. Kev xaiv hnav-cov khoom tiv thaiv refractory castables haum rau cov kev ua haujlwm tsis yog tsuas yog kev txav mus los rau kev tiv thaiv cov cuab yeej xwb, tab sis kuj yog ib qho kev xaiv zoo rau cov lag luam kom txo cov nqi, nce kev ua tau zoo, thiab ua tiav ntsuab thiab qis -carbon kev loj hlob.