Kev tshuaj xyuas kev puas tsuaj ntawm REFRACTORY LINING ntawm CEMENT ROTARY KILN thiab cov kev xav tau rau kev xaiv MASONRY

1 Kev Taw Qhia
Qhov kev puas tsuaj ntawm cov refractory hauv ob sab phlu ntawm cov teb kiln feem ntau cuam tshuam rau kev txuas ntxiv ntawm kev tsim khoom thiab yog ib qho ntawm cov khoom siv sib tsoo. Yog vim li cas rau qhov kev huam yuaj muaj xws li tsim qauv, refractory zoo, masonry zoo thiab kev khiav hauj lwm thiab txij nkawm. Los ntawm kev txheeb xyuas tag nrho ntawm ntau yam kev puas tsuaj hauv ob sab phlu, nws yuav pab tau kom nrhiav tau qee qhov laj thawj, thiab ua kom muaj kev tswj xyuas ua ntej kom tsis txhob muaj xwm txheej tshwm sim rau qhov loj tshaj plaws.
2. Lub luag haujlwm ntawm rotary kiln refractory hauv ob sab phlu
(1) Tiv thaiv kev puas tsuaj ncaj qha rau lub cev kiln los ntawm cov nplaim hluav taws kub lossis cua ntws, thiab tiv thaiv lub cev lub tog raj kheej.
(2) Tiv thaiv kev yaig ntawm lub cev kiln los ntawm cov khoom tsis zoo (C0, S02).
(3) Tiv thaiv cov khoom thiab cov cua ntws los ntawm eroding lub kiln lub cev.
(4) Txo qhov kub ntawm lub cev kiln kom tiv thaiv lub cev kiln los ntawm oxidatively eroded.
(5) Nws muaj kev ua haujlwm ntawm kev khaws cia cua sov thiab kev txuag hluav taws xob.
(6) Nws tuaj yeem txhim kho kev ua haujlwm ntawm dai kiln tawv nqaij.
3. Daim ntawv ntawm kev puas tsuaj rau lub refractory hauv ob sab phlu
3.1 Hom kev puas tsuaj
Lub refractory hauv ob sab phlu yog feem ntau raug rau kev sib xyaw ua ke ntawm kev ntxhov siab, cov khoom sib txhuam, thermal stress, airflow thiab tshuaj yaig nyob rau hauv lub rotating lub sij hawm ntev, uas feem ntau ua rau tshwm sim ntawm cov teeb meem hauv qab no:
(1) Lub lifting block tau raug rau eccentricity nyhuv ntawm txhua yam kev sib hloov, cov nyhuv ntawm qhov kub thiab txias thiab cuam tshuam kev sib txhuam ntawm lub pob zeb rau lub sij hawm ntev, uas ua rau lub distortion ntawm prefabricated block, ntog tawm ntawm lub refractory. cov ntaub ntawv, thiab cov thinning ntawm lub thickness, uas ua rau cov refractory bricks ntim ntawm lub lifting blocks deform thiab poob tawm.
(2) Melting poob ntawm kub sintered txheej.
(3) Cov cua ntws nrog qhov sib txawv ntawm qhov kub thiab txias hauv lub cev ua rau cov plua plav sintered rau hauv cov blocks thiab adheres rau saum npoo ntawm cov khoom refractory ntawm qhov kub thiab txias. Thaum lub qhov cub lub cev tig, kev sib cais ntawm lub ntiajteb txawj nqus ua rau cov khoom siv refractory ib nrab tev tawm, lub cib hauv ob sab phlu yog thinned, qhov kub ntawm lub kiln lub cev nce, thiab cov qauv hlau hloov mus rau qhov sib txawv ntawm cov kev pab cuam lub neej ntawm lub kiln lub cev.
3.2 Qhov tshwm sim ntawm ntau yam kev puas tsuaj
Lub tuam txhab German Refractory Technology Company tau ua qhov kev sim loj loj ntawm cov khoom siv refractory, thiab suav qhov tshwm sim ntawm kev puas tsuaj loj:
(1) Mechanical stress accounts rau 37 feem pua: tshwm sim los ntawm deformation ntawm lub tog raj kheej thiab thermal expansion ntawm lub cib.
(2) Cov tshuaj lom neeg 36 feem pua: tshwm sim los ntawm kev yaig ntawm clinker silicates thiab alkali ntsev.
(3) Thermal stress accounts rau 27 feem pua: tshwm sim los ntawm overheating thiab thermal shock.
Nrog rau qhov sib txawv ntawm hom kiln, kev khiav hauj lwm thiab txoj hauj lwm ntawm lub kiln hauv ob sab phlu, qhov saum toj no peb yam ua si sib txawv, feem ntau yog nyob ntawm lub xeev deformation ntawm cov nplaim taws, cov khoom siv kiln thiab lub plhaub kiln thaum lub sij hawm ua haujlwm, yog li Subject lub hauv ob sab phlu. ntau yam kev ntxhov siab.
4. Ua rau kev tsom xam thiab tiv thaiv kev puas tsuaj ntawm refractory
4.1 Mechanical stress puas
4.1.1 Thermal expansion squeezes tawm lub refractory cib
Thaum qhov kub ntawm lub kiln nce mus rau ib qho twg, qhov thermal expansion yuav ua rau lub siab nyob rau hauv lub axial kev taw qhia ntawm lub kiln, ua rau lub refractory bricks nyob ib sab sib sib zog nqus. Thaum lub siab ntau dua lub zog ntawm refractory bricks, lub refractory cib nto yuav tev tawm. Cov kev ntsuas hauv qab no yuav tsum tau ua:
(1) Cov pob zeb qhuav-nteg refractory cib yuav tsum tau muab nrog cov ntaub ntawv tsim nyog, thiab cov pob zeb ntub dej refractory yuav tsum tau nrog 2 hli hluav taws-av nplaum pob qij txha.
(2) Cia lub nplhaib tsim nyog.
4.1.2 Hlau phaj kev nyuaj siab puas
Thaum kub kawg ntawm lub refractory cib, veneer hlau phaj thiab magnesia nyob rau hauv lub magnesia cib react chemically nyob rau hauv high kub los tsim ib tug magnesia-hlau compound, uas ua rau kom lub ntim thiab nyem lub refractory cib, ua rau kab rov tav tawg. Nyob rau hauv qhov kev pom ntawm qhov teeb meem no, kev xyaum ntawm refractory cib veneer hlau yuav tsum tau hloov los yog hloov nrog cov av nplaum hluav taws.
4.1.3 Loj cheeb tsam skew dislocation ntawm refractory cib
Vim hais tias cov masonry yog xoob heev thiab lub kiln nquag pib thiab nres, lub plhaub kiln yog deformed, thiab lub plhaub kiln thiab qhov txias ntawm lub hauv ob sab phlu cib txav mus rau ib leeg, ua rau lub hauv ob sab phlu yuav skewed thiab dislocation thiab lub cib nto kom tawg thiab poob. Cov kev ntsuas hauv qab no yuav tsum tau ua:
(1) Thaum lub sij hawm masonry, qhov loj ntawm lub refractory bricks yuav tsum tau hammered nrog ib tug ntoo rauj, lub xauv cib yuav tsum tau muab xauv, thiab lub wedge hlau yuav tsum tau ntxiv rau lub sij hawm thib ob.
(2) Ua kom ruaj khov thermal system.
(3) Qhov deformed ib feem ntawm lub tog raj kheej kiln yog leveled nrog kub kub cement.
4.1.4 Ovality stress extrusion
Vim muaj qhov sib txawv ntawm qhov sib txawv ntawm lub log log thiab lub shim, lub tog raj kheej lub cev muaj qhov loj ovality, ua rau cov cib refractory yuav tsum tau nyem. Lub ovality ntawm lub tog raj kheej yuav tsum tau xyuas tsis tu ncua. Yog tias tus nqi oval tshaj 1/10 ntawm txoj kab uas hla ntawm lub qhov cub, lub phaj rov qab yuav tsum tau hloov los yog cov hlau thaub qab yuav tsum tau nce ntxiv los kho qhov sib txawv ntawm cov log tsheb.
4.1.5 Kev ntxhov siab extrusion ntawm xauv hlau
Thaum xauv lub cib, hlau ntau dhau ntawm lub qhov ncauj xauv yuav ua rau tsim ib lub cib ditch ntawm lub qhov ncauj xauv. Cov kev ntsuas hauv qab no yuav tsum tau ua:
(1) Nyob rau tib lub xauv. Tus naj npawb ntawm cov xauv hlau tsis pub tshaj 3 daim.(2) Qhov kev ncua deb ntawm lub xauv hlau yog qhov sib cais raws li qhov ua tau.(3) Lub kaw ntom ntom ntawm qhov qhib sab hauv thiab sab nrauv yuav tsum zoo ib yam thaum kaw cov cib.(4) xauv hlau yuav tsum tau khaws cia kom deb ntawm lub xauv nyias nyias kom deb li deb tau.
4.1.6 Extruded refractory bricks nrog tuav cib nplhaib
Cov blocking bricks (tshwj xeeb-zoo li cib) ntawm lub blocking cib nplhaib yog crushed thiab tawg vim extrusion. Nyob rau hauv rooj plaub no, lub nplhaib thaiv ib leeg yuav tsum tau hloov mus rau lub nplhaib thaiv ob npaug, thiab tag nrho cov cib yuav tsum tau muab tso rau ntawm lub nplhaib thaiv thaiv kom tsis txhob ua cov cib tshwj xeeb. .
4.2 Thermal puas
4.2.1 Overheating
Lub zos overheating ntawm qhov kub thiab txias nyob rau hauv lub kiln ua rau lub melting ntawm refractory bricks thiab tsim pits. Txhawm rau zam qhov teeb meem no, lub burner yuav tsum tau kho kom raug thiab tsim nyog cov ntaub ntawv refractory yuav tsum tau xaiv nyob rau hauv ntau qhov chaw.
4.2.2 Thermal shock tshwm sim
Vim lub thermal stress tshwm sim los ntawm qhov kub thiab txias tam sim ntawd hloov, lub cib nto yog tev thiab tawg, uas feem ntau yog tshwm sim los ntawm nquag hloov mus rau thiab tawm, txias heev thiab kub heev. Kev ua haujlwm ntau lawm yuav tsum ua kom ruaj khov, thiab tsim kom muaj cua sov thiab cua txias qhov system yuav tsum tau tsim.
4.3 Kev puas tsuaj tshuaj lom
4.3.1 Lub nroog yaig
Cov pa roj-theem alkali ntsev compound nkag mus rau hauv qhov khoob ntawm lub cib lub cev kom condense thiab solidify, tsim ib kab rov tav permeable txheej ntawm alkali ntsev nyob rau hauv lub cib lub cev, thiab cov ntsiab lus ntawm alkali ntsev nkag mus rau hauv lub kiln yuav tsum tau txo nyob rau hauv ntau lawm.
4.3.2 Dej phenomenon
MgO reacts nrog dej los tsim Mg (OH) 2, uas ua rau kom lub ntim thiab rhuav tshem tag nrho cov qauv ntawm refractory cib. Txij li cov cib refractory uas muaj MgO thiab CaO yuav muaj cov tshuaj tiv thaiv hydration, nws yuav tsum tau ua kom tsis txhob ya raws, tsis muaj dej thiab los nag thaum lub sij hawm cia, tsheb thauj mus los thiab masonry ntawm refractory cib.
Los ntawm cov txheej txheem kev puas tsuaj ntawm cov pob zeb refractory saum toj no, nws tuaj yeem pom tau tias cov qauv kev tsim kho ntawm cov khoom siv refractory tuaj yeem ua rau lub neej ntev ntawm cov khoom siv refractory, thiab cov neeg ua haujlwm thiab cov neeg ua haujlwm siab tshaj plaws masonry yog ib qho tseem ceeb los xyuas kom meej qhov zoo ntawm refractory.
5. Cov kev cai zoo rau refractory masonry
5.1 Tswj ua ntej masonry
(1) Thaum tuav cov ntaub ntawv refractory, yuav tsum tau saib xyuas kom tswj tau qhov kev puas tsuaj ntawm cov cib refractory li ntawm 3 feem pua.
(2) Kev ua haujlwm ntawm kev teeb tsa cov kab yuav tsum ua kom zoo. Lub longitudinal siv kab ntawm lub kiln yuav tsum muab tso rau plaub symmetrically raws lub ncig nyob rau hauv ib tug "cross" zoo. Txhua kab yog parallel mus rau axis ntawm lub kiln; cov kab ntawv hlais yuav tsum muab tso rau txhua 2m. parallel thiab perpendicular rau lub kiln axis.
(3) xyuas kom meej tias cov hlau phaj ntawm lub qhov cub ua kom huv si, tshem tawm cov ntawv hlau corroded, thiab nruj me ntsis txwv tsis pub siv cov cib refractory uas nws cov ntug kev puas tsuaj thiab kaum kev puas tsuaj ntau tshaj qhov kev tswj.
5.2 Masonry txheej txheem tswj
(1) Thaum lub sij hawm tsim kho, xyuas kom meej tias cov ntaub ntawv refractory tsis ntub, thiab cov txheej txheem cib ua tiav los ntawm lub tshuab cib. Tom qab txiav, qhov ntev ntawm lub cib yuav tsum tshaj 50 feem pua ​​ntawm cov thawj cib ntev, thiab lub thickness yuav tsum ncav cuag ntau tshaj 70 feem pua ​​ntawm cov thawj thickness.
(2) Lub nplhaib masonry txoj kev yog siv rau masonry, lub cib nyob ze rau lub kiln lub cev, thiab nws yog tsim nyog los xyuas kom meej tias tag nrho plaub fab ntawm lub cib nyob rau hauv kev sib cuag nrog lub kiln lub cev.
(3) Cov teeb meem tshwm sim hauv qab no yuav tsum tau zam hauv kev tsim kho masonry: inversion ntawm lub taub hau loj thiab me, rho npe, sib tov, dislocation, inclination, tsis sib xws cement pob qij txha, nce toj, off-center, hnyav pob qij txha, los ntawm cov pob qij txha, qhib qhov ncauj, voids, cov plaub hau pob qij txha, nab Curved zoo, masonry bulge, uas ploj lawm npoo thiab ces kaum.
(4) Siv rauj ntoo lossis roj hmab rauj thaum tsim cov pob zeb refractory, thiab nws yog txwv tsis pub siv rauj hlau.
(5) Kev npaj cov av nkos refractory yog ua los ntawm cov dej huv, ntsuas qhov hnyav, sib npaug sib npaug, thiab siv txhua lub sijhawm. Cov av nkos uas tau npaj tseg yuav tsum tsis txhob siv nrog cov dej ntxiv, thiab cov av nkos uas tau npaj ua ntej yuav tsum tsis txhob siv ntxiv lawm. Cov khoom siv tau raug ntxuav raws sijhawm.
5.3 Cib voj voog xauv seam tswj
(1) Tsuas yog cov pob zeb qub tuaj yeem siv los kaw cov cib, thiab cov txheej txheem cib yuav tsum tsis txhob siv.
(2) Yog tias ob peb lub cib siv rau kev kaw lub kaw lus, lub kaw ntom nti cib yuav tsum tsis txhob siv ua ke nrog ib leeg, thiab hom qauv yuav tsum siv sib hloov ua ke; Txhua hom xauv seam cib ntawm txhua lub nplhaib ntawm refractory cib yuav tsum tsis pub tshaj ob.
(3) xyuas kom meej tias kab rov tav seam ntawm lub cib yog sib npaug mus rau lub kiln axis nyob rau hauv lub xauv seam siv.
(4) Lub thickness ntawm lub xauv seam hlau phaj tsis ntau tshaj 2 hli.
(5) Tsuas yog ib lub xauv-seam steel phaj tuaj yeem siv rau hauv txhua qhov seam. Yog tias xav tau ob peb daim hlau hlau, lawv yuav tsum tau muab faib ua ib qho sib npaug ntawm tag nrho cov xauv-cib cheeb tsam, thiab tus naj npawb ntawm lub xauv-seam steel phaj ib lub nplhaib yuav tsum tsis pub tshaj plaub.
6. Cov ntsiab lus ntawm kev xaiv cov khoom siv refractory
Thaum xaiv cov ntaub ntawv refractory, cov hauv qab no yuav tsum tau ua kom ntseeg tau:
(1) Kub kub kuj. Nws tuaj yeem khiav hauv ib puag ncig siab dua 800T rau lub sijhawm ntev.
(2) Lub zog muaj zog thiab zoo hnav tsis kam. Cov khoom siv refractory nyob rau hauv lub teb kiln yuav tsum muaj ib tug tej yam txhua yam lub zog los tiv thaiv qhov expansion kev nyuaj siab ntawm kub kub thiab kev nyuaj siab los ntawm lub deformation ntawm lub teb kiln plhaub. Nyob rau tib lub sijhawm, vim qhov hnav ntawm cov khoom siv refractory los ntawm cov nqi thiab cov pa roj, cov khoom siv refractory yuav tsum muaj kev hnav zoo.
(3) Nws muaj tshuaj lom neeg ruaj khov. Txhawm rau tiv thaiv kev yaig ntawm cov tshuaj hauv cov pa roj.
(4) Zoo thermal stability. Muaj peev xwm tiv taus alternating kev ntxhov siab nyob rau hauv incineration xeev. Thaum lub cub tawg tau nres, pib thiab kev ua haujlwm tig tsis ruaj khov, qhov kub thiab txias hloov ntawm lub cub tawg yog qhov loj, thiab yuav tsum tsis txhob tawg lossis tawg.
(5) Thermal expansion stability. Txawm hais tias lub thermal expansion coefficient ntawm lub plhaub rotary kiln ntau dua qhov nthuav coefficient ntawm cov khoom siv hluav taws xob refractory, lub plhaub kub feem ntau nyob ib puag ncig, thiab qhov kub ntawm cov khoom siv refractory feem ntau yog siab dua 8001, uas yuav ua rau cov khoom siv refractory nthuav dav. tshaj lub plhaub rotary kiln. Ua kom loj, yooj yim poob.
(6) Lub porosity yuav tsum tsawg. Yog hais tias lub porosity siab, cov roj flue yuav nkag mus rau hauv cov khoom siv refractory thiab erode cov khoom refractory.
7. Cov lus xaus
Txoj kev npaj ntawm cov refractory cib nyob rau hauv lub teb kiln, qhov zoo ntawm cov refractory cib, cia cov refractory bricks, masonry ntawm refractory bricks, ziab ntawm lub teb kiln, thiab kev tuav tsis zoo ntawm txhua yam ntawm cov khoom yuav cuam tshuam. lub neej kev pab cuam ntawm lub teb kiln. Kev saib xyuas cib pab siv cov khoom siv hluav taws xob uas pheej yig tshaj plaws kom ua tiav cov txiaj ntsig zoo tshaj plaws.