Ntawm no yog qhov hais txog cov cement rotary kilns: cov ntaub ntawv tsis yog ib txheej. Lub qhov cub hluav taws xob khiav tsib thaj chaw sib txawv - preheating, sab sauv hloov, kev hloov pauv qis, kub hnyiab, thiab txias - thiab txhua cheeb tsam tawm tsam refractories txawv. Ib qib cib rau tag nrho cov kiln ua tsis tau yam tsawg kawg peb ntawm lawv. Qhov chaw kub kub xav tau ib lub cib yooj yim uas tuav cov txheej; thaj chaw hloov pauv xav tau thermal shock tsis kam; lub inlet xav tau alkali tsis kam; lub qhov hluav taws xob xav tau txhua yam muaj zog. Sib piv cov qib mus rau thaj tsam thiab ib kab khiav 12-18 lub hlis. Tsis quav ntsej cov cheeb tsam thiab koj yuav nyob txhua rau rau. Phau ntawv qhia no qhia txog cov cheeb tsam, cov qib refractory refractory uas muaj sia nyob txhua qhov, thiab peb yuav hais li cas rau cov phiaj xwm kiln - kos los ntawm cov kab uas peb tau ua hauv cov cement thiab txiv qaub kiln thoob plaws 30+ lub teb chaws.
Yuav Ua Li Cas Rotary Kiln Refractory Linings Hnav hauv Kev Pabcuam
Lub tshuab hluav taws xob teb refractory hauv ob sab phlu tsis ua haujlwm los ntawm plaub lub tshuab ib zaug, thiab qhov sib xyaw ntawm lawv hloov chaw mus rau ib cheeb tsam.
Thermal load. Cov nplaim taws zaum ntawm 1,600-1,700℃hauv thaj chaw hlawv; lub ntsej muag cib yuav tsum tuav kom txog thaum lub plhaub nyob txias. Thermal shock hits thaum lub kiln nres thiab rov pib dua - txhua qhov nres yog lub voj voog thermal.
Tshuaj tua kab mob. Alkalis los ntawm cov pluas noj nyoos condense nyob rau hauv qhov chaw nkag thiab sab sauv, tsim cov tebchaw uas o thiab tawg cib los ntawm sab hauv. Qhov ntawd yog qhov classic "alkali bursting" tsis ua haujlwm.
Mechanical stress. Lub kiln rotates, load slides, thiab hauv ob sab phlu yog nws. Lub ovality ntawm lub plhaub, lub log txav, thiab cib zawv zawg tag nrho cov zom ntawm lub hauv ob sab phlu.
Kev puas tsuaj. Lub inlet kawg pom cov zaub mov qhuav; lub qhov hluav taws xob pom clinker. Ob leeg hnav cib los ntawm eroding nws.
Rotary kiln refractory xaiv pib nrog plaub lub tswv yim no, vim tias txhua cheeb tsam yog qhov sib txawv ntawm qhov hnyav ntawm lawv. Lub cheeb tsam uas dominates txhua hom tsis ua hauj lwm txiav txim lub cib. Tias yog vim li cas lub tshuab hluav taws xob refractory hauv ob sab phlu spec yog ib cheeb tsam -los ntawm -zone daim ntawv, tsis yog ib qib cib.
Lub Kiln Zones thiab Txhua Yam Xav Tau
Txhua qhov chaw refractory rotary kiln muaj nws tus kheej xav tau profile. Los ntawm qhov nkag mus rau qhov hluav taws xob, qhov xav tau hloov pauv hauv qhov kev txiav txim siab tau.
Preheating thiab inlet cheeb tsam, 800-1,000 degree: alkali condensation yog yeeb ncuab. Lub cib xav tau qhov porosity tsawg thiab siab alkali tsis kam - alkali-resistant fireclay los yog castable tsim rau nws.
Sab qaum kev hloov chaw, 1,000-1,200℃: kub nce thiab alkali tseem condenses. Tib yam alkali-resistant chemistry, nrog ntau thermal shock kam rau ua.
Kev hloov pauv qis dua, 1,200-1,350℃: qhov hnyav tshaj plaws thermal cycling nyob rau hauv lub kiln, vim hais tias txheej txheej - txheej tiv thaiv ntawm clinker uas sticks rau cib - yog tsis ruaj tsis khov ntawm no. Nws tsim, tawg tawm, thiab siv ib txheej ntawm cib nrog nws. Lub cib xav tau qhov siab tshaj plaws thermal shock resistance.
Burning cheeb tsam, 1,350-1,450℃cib ntsej muag: thaj tsam uas yuav tsum tuav lub txheej ruaj khov. Nws xav tau lub cib yooj yim - magnesia-raws li chemistry uas lub clinker yuav chemically bond rau.
Qhov chaw txias thiab qhov hluav taws xob, 1,000-1,200 degree: txhua yam thiab kev ua haujlwm puas, nrog tsawg dua chemistry. Castable thiab precast duab tuav lub qhov ntswg thiab qhov hluav taws xob zoo.
Hauv kev xyaum, peb spec rotary kiln refractory cheeb tsam los ntawm cheeb tsam, thiab feem ntau kilns xaus nrog peb cib qib los ntawm cov zoo li refractory ntau yam ntxiv rau castable - tsis yog tsib yam khoom tshwj xeeb, tsuas yog peb txoj cai.
Burning Zone: Qhov twg hauv ob sab phlu khwv tau nws
Qhov chaw kub hnyiab yog qhov kev xaiv ntawm qhov cub refractory txiav txim siab lub neej kev sib tw, thiab cov kev xaiv tau hloov pauv hauv kaum xyoo dhau los.
Magnesia- chrome cib yog qhov chaw kub hnyiab hauv ob sab phlu. Nws ua haujlwm - thiab nws nqa hexavalent chrome, uas yog vim li cas feem ntau ntawm kev lag luam tau txav deb ntawm nws nyob rau hauv ib puag ncig siab.
Magnesia-spinel cib yog tus qauv niaj hnub. Pebmagnesia-alumina-spinel cibtuav cov txheej txheem zoo li cov qib chrome tau ua, muaj sia nyob ntawm thermal cycling zoo dua, thiab tsis muaj teeb meem chrome. Nws yog qhov peb pom zoo rau qhov chaw hlawv uas khiav tus qauv Portland cement.
Doloma cib - tuag hlawv dolomite - yog lwm qhov kev xaiv pov thawj, muaj nyob rau hauv cov teb chaws Europe, nrog zoo heev txheej adhesion thiab ntes: nws hydrates thaum raug dej, yog li cia thiab kaw kev tuav yuav tsum nruj.
Qhov chaw kub nyhiab hauv ob sab phlu nyob los yog tuag los ntawm txheej. Ib txheej txheej ruaj khov ntawm 10-20 hli tiv thaiv lub cib los ntawm cov nplaim taws ncaj qha thiab slag; lub cib txoj hauj lwm yog tuav nws. Tias yog vim li cas yooj yim chemistry yeej ntawm no - kua qaub cib thiab cov clinker tsis khi tib txoj kev. Lub luag haujlwm ntawm qhov kub hnyiab yog tib yam hauv cov qauv tsim: tuav txheej, tiv taus nplaim taws, muaj sia nyob nres. Cov qib refractory rotary kiln uas ua tag nrho peb yog cov tsev neeg yooj yim, magnesia-spinel ua ntej ntawm lawv, thiab txhua qhov kev sib tw peb hais suav nrog cov txheej txheem tswj xyuas - txheej yog ib nrab ntawm kev sib ntaus sib tua.
Transition Zone: Kev Ntsuas Acid
Qhov chaw hloov pauv yog qhov uas feem ntau cov kab mob ntxov ntxov tshwm sim, thiab qhov laj thawj yog txheej txheej tsis ruaj khov.
Txheej cov ntaub ntawv thiab spalls dua nyob rau hauv cheeb tsam no. Txhua spills rips ib txheej ntawm cib ntsej muag. Lub cib uas muaj sia nyob ntawm no ua ob yam: nws tiv thaiv thermal shock yog li nws tsis tawg nyob rau hauv kev caij tsheb kauj vab, thiab nws daim ntawv cog lus muaj zog txaus kom rov ua dua - rov qab sai sai tom qab txhua qhov tawg.
Rau qhov kev hloov pauv, tus qauv refractory rotary kiln refractory yog magnesia-spinel nrog cov thermal shock tsis kam, feem ntau yog qib tib yam li qhov kub hnyiab los yog cov qauv tsim. Qee cov nroj tsuag khiav siab -alumina cib nrog ntxiv spinel rau sab sauv, qhov twg alkali tseem tseem ceeb. Dab tsi tsis ua hauj lwm ntawm no: ntom fireclay, uas spalls ceev, thiab unmodified siab alumina, uas tsis muaj lub siab ntev.
Ib tus lej los ntawm peb cov ntaub ntawv: ib tsob ntoo cement nyob rau sab hnub tuaj Asia tau khiav magnesia-spinel hauv qis hloov pauv ntawm 4.8-meter kiln tom qab fireclay ua tsis tau txhua yim lub hlis. Spinel hauv ob sab phlu dhau kaum plaub lub hlis ua ntej thawj thaj, thiab nws ua tsis tau zoo los ntawm ib txwm hnav, tsis yog los ntawm spalling. Kev hloov pauv tsis ua haujlwm ua rau muaj kev hloov pauv hloov pauv hloov pauv hloov pauv - yog tias koj lub qhov cub hloov pauv ua ntej, qhov ntawd yog thaj tsam hloov kho, thiab ntawm ob qhov kev hloov pauv cov spec feem ntau nqa tib qib spinel ntawm qhov sib txawv.
Inlet, Qhov hluav taws xob thiab cua txias: Castable thiab Alkali-Resistant Territory
Ob qhov kawg ntawm qhov cub yog castable lub teb chaws.
Lub inlet thiab preheating cheeb tsam khiav alkali-resistant castable los yog precast blocks, vim hais tias cov condensation puas tsuaj yog tshuaj thiab ib tug ntom, tsawg- lub cev porosity resists nws zoo tshaj plaws. Feem ntau cov rotary kiln refractory tsis ua hauj lwm ntawm lub inlet yog alkali, tsis yog cua sov - qhov kub thiab txias yeej tsis tau huab cua, tab sis cov ntsev ua. Pebsiab alumina castableCov qib npog 1,000-1,200℃ntau yam nrog cov porosity tswj alkali nres xav tau.
Lub qhov hluav taws xob, lub qhov ntswg lub nplhaib, thiab cov cua txias coj cov neeg kho tshuab ntaus. Siab -lub zog castable thiab precast qhov ntswg daim npog lub thermal cycling, lub clinker abrasion, thiab cov neeg kho tshuab loads uas tsis muaj cib sib koom nyob rau hauv ntev. Covmonolithic refractory ntau yamnqa cov castable qib peb spec rau cov cheeb tsam no.
Txias cheeb tsam cib khiav qis kawg ntawm qhov kub ntawm tus ntaiv - siab alumina los yog fireclay nrog zoo abrasion tsis kam, tuav nyob rau hauv qhov chaw tiv thaiv lub plhaub.
Vim li cas Zone Matching Beats Ib "Zoo" Cib
Tus nqi logic yog qhov yooj yim: cov hauv ob sab phlu tsuas yog ntev npaum li nws qhov tsis muaj zog tshaj plaws, thiab qhov chaw hlawv tsis yog qhov tsis muaj zog tshaj plaws. Thaj chaw sib tw yeej ib qho "zoo tshaj" cib - uas yog qhov sib txawv ntawm lub pob hluav taws xob refractory uas ua haujlwm thiab ib qho uas tsis yog. Peb tau pom cov phiaj xwm hluav taws xob refractory txuas ntxiv los ntawm ob mus rau plaub lub hlis nrog ib cheeb tsam hloov kho thiab tsis muaj lwm yam hloov pauv.
Hauv feem ntau cov kiln, qhov chaw hloov pauv qis dua ua ntej. Kev siv tag nrho cov pob nyiaj siv rau ntawm qhov chaw kub kub zoo tshaj plaws thaum khiav fireclay nyob rau hauv qhov kev hloov pauv yog ib qho kev nco - qhov kev sib tw xaus thaum qhov kev hloov pauv tsis tau, tsis yog thaum qhov chaw kub hnyiab tawm. Peb txoj cai: txheeb xyuas thaj chaw uas ua tsis tau thawj zaug ntawm koj lub qhov cub, thiab txhim kho thaj chaw ntawd ua ntej. Ib cheeb tsam hloov kho tus nqi ib feem ntawm tag nrho reline thiab feem ntau txuas ntxiv rau kev sib tw ntau dua.
Rau daim duab tag nrho ntawm vim li cas cib tsis ua haujlwm, peb tus neeg piav qhia ua ntej ntawmua rau refractory cib puas nyob rau hauv cement kilnnpog qhov tsis ua hauj lwm mechanisms hauv qhov tob.
Ordering: Lub Sijhawm Leading, Them Nyiaj & Ntim
Lub sijhawm ua haujlwm yog 15-20 hnub los ntawm kev tso nyiaj rau cov qauv hauv tsev, 25-35 hnub rau cov qauv kev cai thiab cov qib cib yooj yim. Kev them nyiaj yog T / T nrog 30% tso nyiaj thiab 70% ua ntej xa zaub mov. Ntim yog ntoo pallets nrog shrink-wrap thiab ces kaum kev tiv thaiv rau ntev hiav txwv ceg; yooj yim cib tau txais kev tiv thaiv noo noo ntxiv hauv kev thauj mus los.
Rau ib lub qhov cub hauv ob sab phlu, xa tuaj rau peb: kiln txoj kab uas hla thiab ntev, thaj tsam koj nyob hauv ob sab phlu, tam sim no lub neej nyob rau hauv lub hlis, thiab qib cib koj nyob nraum hloov. Rotary kiln refractory quotes los ntawm peb suav nrog ib cheeb tsam daim ntawv qhia thiab xav tau lub neej ib cheeb tsam, tsis yog ib daim ntawv teev cib xwb. Peb mam li lees paub cov qib hauv 24 teev - thiab yog tias koj qib tam sim no tsis raug rau cheeb tsam, peb cov engineers yuav qhia koj ua ntej koj xaj.
Cov kab hauv qab: lub tshuab hluav taws xob refractory hauv ob sab phlu yog tsib kab hauv ib lub plhaub - qib txhua cheeb tsam rau nws tus kheej tsis ua hauj lwm hom, txhim kho cheeb tsam uas ua tsis tau ua ntej, thiab cov phiaj xwm ua raws. Xa koj cov ntaub ntawv kiln rau peb, thiab peb yuav qhia cov cheeb tsam hauv 24 teev.
Thov Quote ·Hu rau Muag· WhatsApp +86 138 6443 5866
