Hauv kev lag luam steelmaking, coke ncu ua haujlwm nyob rau hauv qhov kub thiab txias tsis tu ncua. Lub durability ntawm lawv cov ntaub ntawv refractory ncaj qha txiav txim siab qhov cub qhov kev ua tau zoo, tus nqi tu, thiab kev tsim khoom txuas ntxiv.
Thaum kho cov chaw kub xws li cov phab ntsa regenerator, cov ntu ru tsev, thiab cov combustion chamber, kev xaiv cov khoom siv refractory yog qhov tseem ceeb.
Nyob rau hauv xyoo tas los no,fused silica brickstau dhau los ua cov khoom siv rau coke cub kub kho, hloov cov tsoos zoo tib yam silica cib vim lawv cov thermal stability thiab zero expansion kev ua tau zoo.
1. Ultra- Tsawg Thermal Expansion – Zero Spalling Risk
Ordinary silica bricks nthuav tawm los ntawm ~ 1.5% ntawm 1350 degree, ua rau muaj kev ntxhov siab sab hauv uas ua rau muaj kev sib tsoo thaum kho kub yog quenched nrog nitrogen lossis chav. Fused silica cib, tsim los ntawm hluav taws xob arc melting thiab cia txias txias, yuav luag tsis muaj cristobalite; lawv linear expansion yog<0.1 % up to 1400 °C. During a hot repair, contractors can spray cooling mist directly onto the brick surface without fear of exfoliation, cutting repair time by half.
2. Instant Thermal-Poob siab ntev - Los ntawm nplaim taws mus rau 20℃hauv feeb
Coke qhov cub yuav tsum tau txias sai sai rau kev nyab xeeb ua ntej cov neeg ua haujlwm nkag. Ordinary silica bricks yuav tsum tau tswj 30℃/ h txias -kom tsis txhob tawg. Fused silica bricks zam 500℃instantaneous poob, tso cai rau cov neeg ua haujlwm qhib qhov rooj tam sim ntawd tom qab lub qhov cub kaw. Cov cuab yeej no txuag tau 6-8 teev ib qho kev kho dua tshiab.
3. Lub zog kub dua - Tsis muaj deformation hauv qab Load
At 1300 °C, ordinary silica bricks lose ~40 % of their cold modulus of rupture. Fused silica retains >80%, tswj kev ruaj ntseg ntawm phab ntsa txawm tias nyob ib sab refractories raug tshem tawm. Lub zog kub siab dua no tiv thaiv phab ntsa hneev thiab tswj qhov cub qhov ntev, qhov tseem ceeb rau kev sib xyaw coking thiab roj ntws.
4. Dense, Glassy Matrix – Superior Alkali & CO Resistance
Coke-Ob roj muaj Na₂O, K₂O thiab CO. Molten alkalis nkag mus rau cov silica cib zoo tib yam, ua kom qis - melting eutectics uas ua rau kom hnav. Lub iav, tsis yog - ntxeem tau ntawm fused silica repels alkalis; corrosion tus nqi yog<0.3 mm/year versus 1.2 mm/year for standard silica.
5. Kub- Kho Kev Ua Haujlwm - Txiav, Sib Tsoo, Zoo li ntawm -Site
Vim hais tias fused silica tsis muaj cov txheej txheem crystalline, nws tuaj yeem txiav nrog pob zeb diamond discs ntawm 1000℃yam tsis muaj micro- tawg. Cov neeg cog qoob loo tsim cov cib kom haum rau lub caj dab ntawm lub qhov cub lossis lub qhov rooj qhov rooj thaum lub qhov cub tseem kub, tshem tawm qhov xav tau rau cov duab tshwj xeeb prefabricated thiab txo cov nqi khoom muag.
6. Zog & Nqi Zog
Txawm hais tias fused silica bricks raug nqi ~ 20% ntau dua ua ntej, lawv lub neej kev sib tw ntev dua (nruab nrab 8% ntau coke pushes) thiab xoom qhov poob qis xa tag nrho ROI hauv 18 lub hlis. Ib tsob ntoo nyob sab Europe tau tshaj tawm txuag € 1.2 M hauv kev zam kev kaw ntau dua peb xyoos tom qab hloov mus rau fused silica rau txhua qhov kev kho kub.
7. Kev Pabcuam Ib puag ncig & Kev Nyab Xeeb
Tsis muaj cristobalite txhais tau tias tsis muaj silica plua plav ua pa thaum txiav, tiv thaiv cov neeg ua haujlwm noj qab haus huv. Kev kho qis dua kuj tseem txo qis nitrogen noj thiab CO₂ emissions los ntawm rov ua cua sov-ups.
Rau coke-kub kho kub, fused silica cib ua tau zoo tshaj plaws silica cib hauv thermal shock, corrosion resistance, ntawm - site machinability thiab tag nrho cov nqi ntawm cov tswv cuab. Kev qhia tshwj xeeb fused silica hloov ib txoj haujlwm tu ib txwm ua kom zoo dua qub -tsawg dua qhov tsis tau npaj tseg, lub neej kev sib tw ntev dua, thiab muaj kev nyab xeeb dua, kev ua haujlwm ntsuab dua. Hu rau koj tus neeg muag khoom refractory hnub no mus sim fused silica ntawm koj qhov kub tom ntej - kho lub sijhawm thiab paub qhov txawv ua ntej - tes.
