Cov txiv qaub dawb tau txais los ntawm calcining thiab decomposing calcium carbonate pob zeb nyob ib ncig ntawm 1200 degree, tsim calcium oxide thiab carbon dioxide. Qhov kub siab tshaj plaws ntawm qhov hluav taws kub nyob rau hauv ob qho tib si ntsug ncej rauv thiab cov teb kilns tsis tshaj 1250 degree, thaum lub sij hawm hloov chaw thiab preheating cheeb tsam yog tsawg dua los yog sib npaug zos rau 900 degree. Qhov kub gradient yog qhov tseem ceeb, yuav tsum tau segmented txuam ntawm cov ntaub ntawv refractory rau hauv ob sab phlu.
I. Phosphate Composite Bricks yog thawj qhov kev xaiv rau siab -Tsuas Cheeb Tsam
Qhov chaw tua hluav taws ncaj qha cuam tshuam qhov yaig los ntawm cov nplaim hluav taws thiab cov khoom siv, thiab cov phosphate refractory cib uas muaj qhov ntom ntom ntau dua lossis sib npaug li 2.8 g·cm⁻³ feem ntau siv. Lub siab -alumina matrix thiab tsim nyog tus nqi ntawm silicon carbide ua hauj lwm synergistically tsim ib tug ntom iav theem ntawm 1200 degree, muab kev tiv thaiv rau alkali corrosion thiab hnav, nrog ib tug kev pab cuam lub neej ntawm ntau tshaj 3 xyoo.
II. Kev sib piv ntawm Transition Zone Schemes
1. Rotary Kiln
Cov kiln tshiab tseem siv feem ntausiab alumina cib(secondary Al₂O₃ Ntau dua lossis sib npaug li 65%) lossis cov phosphate cib zoo tib yam, nrog lub cib ntawm 345 hli ntev thiab 75 hli tuab. Qhov no ua kom yooj yim rau tus kheej hloov cib thaum tu thiab txo qis lub cev deformation. Nyob rau hauv xyoo tas los no, ib co qub kiln tau hloov mus rau ib qho tseem ceeb castable refractory kom ua tiav roundness vim ntau ellipticity ntawm lub plhaub kiln. Thaum qhov no txhim kho airtightness, nws yuav tsum loj - nplai dismantling rau tom qab tu, thiab lwm yam ci ci tuaj yeem yooj yim ua rau muaj kev ntxhov siab ntxiv ntawm lub plhaub kiln, ua rau cov neeg siv tau txais kev ceev faj.
2. Vertical Shaft Rauv
Qhov kev hloov chaw kub yog qis dua. Kev lig kev cai, 345 mm × 75 mm siab alumina refractory bricks yog txaus rau ob xyoos ntawm kev ua haujlwm. Qee cov tuam txhab tau nce lub thickness mus rau 100 hli, nce qhov hnyav ntawm ib lub cib los ntawm 30%, uas tuaj yeem txuas lub neej ntev li 6-8 lub hlis. Kev tsim kho tseem siv qhov qub cib zoo li qub, tsis tas yuav hloov pauv cov qauv ntawm lub cub tawg.
III. Kev ntsuas kub ntxhov - tshuaj tsuag txheej
Thaum cov dej num ntau lawm yog ceev thiab kaw qhov rais tsis txaus, cov tshuaj tsuag refractory tuaj yeem siv los kho online.
Scope of Application: Residual lining thickness Ntau dua los yog sib npaug li 50 hli, qhov kev nyuaj siab hauv zos qhov tob Tsawg dua los yog sib npaug li 60 hli.
Cov ntsiab lus tseem ceeb ntawm kev tsim kho:
1. Tshem tawm slag thiab xoob txheej, tuav lub hauv paus tawv;
2. Txau phom nozzle txoj kab uas hla Tsawg dua lossis sib npaug li 40 mm, aggregate particle loj Tsawg dua lossis sib npaug li 5 hli, txheej txheej txau, txhua txheej tsawg dua lossis sib npaug li 30 mm, tag nrho cov tuab tsawg dua lossis sib npaug li 80 mm, txhawm rau tiv thaiv delamination raws li nws qhov hnyav;
3. Tom qab kev kho kom zoo rau 2 teev, qhov kub tuaj yeem nce ntxiv, thiab kev tsim khoom tuaj yeem rov pib dua ntawm tus nqi ntawm 50℃·h⁻¹.
Cov kev txwv: Cov tshuaj tsuag txheej tsis tau dhau los ntawm siab -siab molding thiab sintering, thiab nws lub zog thiab qaug zog tiv thaiv tsuas yog 40-50% ntawm cov cib raug rho tawm haujlwm. Nws feem ntau tsuas kav ntev li 3-6 lub hlis thiab suav tias yog kev ntsuas nres.
IV. Overhaul Kev Txiav Txim
Thaum lub sijhawm hloov kho loj, tag nrho cov txheej txheej txheej txheej yuav tsum tau muab tshem tawm mus rau hauv lub hauv paus tawv, thiab siab - alumina cib los yog phosphate refractory cib yuav tsum tau siv rau re- tso. Cov cib raug rho tawm haujlwm, sintered ntawm qhov kub siab tshaj 1300 degree, ua kom pom kev yaig zoo dua thiab thermal shock tsis kam piv rau cov cib txau. Qhov no tso cai rau kev kho dua tshiab ntawm lub voj voog tsim khoom tsim thiab txo qis kev puas tsuaj los ntawm kev kho thaum muaj xwm txheej ceev.
V. Kev Xaiv
1. Kub Zoning:Siab - thaj chaw kubyog zoned nrog phosphate composite cib; Cov chaw hloov pauv yog zoned nrog qib siab siab -alumina cib lossis phosphate cib zoo tib yam.
2. Kev ntsuam xyuas Kiln Deformation: Cov kiln tshiab yuav tsum ua qhov tseem ceeb hauv cov cib; rau cov laus kilns, tsuas yog cov uas muaj ellipticity ntau dua 0.3% ntawm txoj kab uas hla yuav tsum tau txiav txim siab rau ib qho tseem ceeb castable refractory.
3. Kev Saib Xyuas Qib Sib Txawv: Kev niaj hnub me me - thaj tsam spalling → hloov ib nrab cib; sib sib zog nqus hnav tab sis nruj ntau lawm lub sij hawm → thaum muaj xwm ceev txau; ib xyoos loj overhaul → ua tiav hloov thiab rov tsim kho.
Ua raws li cov kab ke no, muaj kev nyab xeeb, ntev -lub sijhawm, qis- kev ua haujlwm ntawm cov txiv qaub kiln hauv ob sab phlu tuaj yeem ua tiav hauv alkaline, nruab nrab- yaig ib puag ncig hauv qab 1200℃.
