Refractory Castables Rau Cement Rotary Kiln

Refractory Castables Rau Cement Rotary Kiln

1. Steel fiber reinforced refractory castables rau cement kiln
Steel fiber reinforced castables mas qhia cov cua sov-resistant stainless hlau fibers rau hauv cov khoom, kom cov khoom muaj zog dua thiab thermal shock kuj, yog li ua rau cov hnav tsis kam thiab kev pab cuam lub neej ntawm cov khoom. Cov khoom siv feem ntau yog siv rau qhov kub-txias hnav-tiv taus qhov chaw xws li kiln qhov ncauj, pub lub qhov ncauj, hnav-tiv taus pier thiab fais fab nroj tsuag boiler hauv ob sab phlu.

2. Tsawg cement refractory castables rau cement kiln
Tsawg cement refractory castables feem ntau suav nrog high-alumina, mullite thiab corundum refractory castables. Cov khoom siv no muaj cov yam ntxwv ntawm lub zog siab, tiv thaiv scouring, hnav tsis kam thiab kev ua haujlwm zoo heev. Nyob rau tib lub sijhawm, cov khoom siv tuaj yeem ua rau hauv cov khoom tawg-pov thawj ceev ceev raws li tus neeg siv lub sijhawm ci.

3. High-strength alkali-resistant castables rau cement kiln
High-strength alkali-resistant castables muaj zoo tiv thaiv yaig los ntawm alkaline gases thiab slag, thiab muaj lub neej ntev kev pab cuam. Cov khoom siv no tsuas yog siv rau lub qhov rooj npog, qhov cub tawg, lub tshuab ua ntej, kev tswj xyuas, thiab lwm yam.

Txoj kev tsim kho ntawm high-aluminium low-cement castable rau rotary kiln hauv ob sab phlu
Kev tsim kho ntawm high-aluminium low-cement castable rau rotary kiln hauv ob sab phlu yuav tsum tau saib xyuas tshwj xeeb rau tsib txheej txheem hauv qab no:

1. Kev txiav txim siab ntawm cov pob qij txha expansion
Raws li kev paub dhau los ntawm kev siv high-aluminium low-cement castables, expansion pob qij txha yog ib qho tseem ceeb cuam tshuam rau lub neej kev pab cuam ntawm rotary kiln castable linings. Lub expansion pob qij txha thaum lub sij hawm pouring ntawm rotary kiln linings yog txiav txim raws li nram no:

(1) Circumferential pob qij txha: 5m seem, 20mm aluminium silicate fiber ntau yog sandwiched ntawm cov castables, thiab cov fibers yog compacted tom qab expansion rau buffer expansion stress.

(2) Cov pob qij txha: Txhua peb strips ntawm lub castable yog sandwiched nrog 100mm sib sib zog nqus plywood nyob rau hauv lub puab ncig kev taw qhia, thiab ib tug sib koom tes yog tshuav nyob rau hauv lub ua hauj lwm kawg, rau tag nrho ntawm 6 strips.

(3) Thaum lub sij hawm nchuav, 25 tus pins tso tawm yog siv rau ib square meter los tso qee qhov kev ntxhov siab nthuav dav thaum ua rau lub qhov cub tawg.

2. Kev txiav txim siab ntawm kev tsim kho kub
Qhov tsim nyog kub ntawm high-aluminium low-cement castables yog 10 ~ 30 ℃. Yog tias qhov kub thiab txias ambient qis, cov kev ntsuas hauv qab no yuav tsum tau ua:

(1) Kaw qhov chaw tsim kho ib puag ncig, ntxiv cov chaw cua sov, thiab nruj me ntsis tiv thaiv kom khov.

(2) Siv cov dej kub ntawm 35-50 ℃ (txiav txim siab los ntawm qhov chaw ntawm qhov chaw pouring kev co) los sib tov cov khoom.

3. Sib tov
Txiav txim siab qhov sib tov ntawm ib zaug raws li lub peev xwm ntawm lub tshuab tov khoom. Tom qab qhov sib tov yog txiav txim siab, ntxiv cov khoom siv casting hauv lub hnab thiab cov pob me me ntxiv rau hauv lub hnab rau hauv lub tov khoom tib lub sijhawm. Ua ntej pib lub tov khoom kom qhuav-sib tov rau 2 ~ 3 feeb, tom qab ntawd ntxiv 4/5 ntawm cov dej hnyav ua ntej, do rau 2 ~ 3 feeb, thiab tom qab ntawd txiav txim siab qhov seem 1/5 ntawm cov dej raws li viscosity ntawm av nkos. . Tom qab sib tov tag nrho, kev sim nchuav yog nqa tawm, thiab cov dej ntxiv tau txiav txim siab ua ke nrog cov xwm txheej vibration thiab slurry. Tom qab cov dej ntxiv tau txiav txim siab, nws yuav tsum tau tswj nruj me ntsis. Thaum xyuas kom meej tias cov slurry tuaj yeem vibrated, cov dej me me li qhov ua tau yuav tsum tau ntxiv (qhov siv cov dej ntxiv rau qhov castable no yog 5.5% -6.2%).

4. Kev tsim kho
Lub sij hawm tsim kho ntawm high-aluminium low-cement castable yog li 30 feeb. Cov ntaub ntawv dehydrated los yog condensed tsis tuaj yeem tov nrog dej thiab yuav tsum muab pov tseg. Siv tus pas nrig vibrating kom ua tiav slurry compaction. Lub vibrating pas nrig yuav tsum tau tseg kom tiv thaiv kom tsis txhob muaj tus pas nrig ntawm kev ua haujlwm thaum lub vibrating pas nrig tsis ua haujlwm.
Kev tsim kho ntawm cov khoom siv castable yuav tsum tau ua nyob rau hauv ib lub strips raws lub axis ntawm lub teb kiln. Ua ntej txhua lub strip pouring, qhov chaw tsim kho yuav tsum tau ntxuav thiab tsis muaj plua plav, vuam slag thiab lwm yam khib nyiab yuav tsum tau tso tseg. Nyob rau tib lub sijhawm, xyuas seb qhov vuam ntawm lub thauj tog rau nkoj thiab cov xim asphalt nto yog nyob rau hauv qhov chaw. Txwv tsis pub, yuav tsum tau muab kev kho mob.
Nyob rau hauv kev tsim kho sawb, kev tsim kho ntawm lub sawb casting lub cev yuav tsum tau qhib qhov rooj ntawm lub qhov cub mus rau lub taub hau hauv qab ntawm lub qhov cub. Kev txhawb nqa ntawm tus qauv yuav tsum tau nqa tawm ntawm lub thauj tog rau nkoj thiab cov phaj steel. Lub phaj steel thiab lub thauj tog rau nkoj yog khov kho nrog ntoo blocks. Kev txhawb nqa formwork qhov siab yog 220mm, dav yog 620mm, ntev yog 4-5m, thiab lub kaum sab xis yog 22.5 °.
Kev tsim kho ntawm lub cev casting thib ob yuav tsum tau nqa tawm tom qab lub sawb tau teeb tsa thaum kawg thiab cov pwm raug tshem tawm. Ntawm ib sab, tus qauv arc-zoo li tus qauv yog siv los kaw qhov casting los ntawm lub taub hau kiln mus rau tus Tsov tus tw. Tus so yog analogous.
Thaum cov khoom siv casting yog vibrated, cov av sib xyaw yuav tsum muab ntxiv rau hauv lub log pwm thaum vibrating. Lub sijhawm vibration yuav tsum tau tswj kom tsis muaj cov npuas pom tseeb ntawm qhov chaw ntawm lub cev casting. Lub sijhawm demoulding yuav tsum tau txiav txim siab los ntawm qhov ntsuas kub ntawm qhov chaw tsim kho. Nws yog ib qho tsim nyog los xyuas kom meej tias lub demoulding yog nqa tawm tom qab cov khoom siv casting thaum kawg tau teeb tsa thiab muaj qee lub zog.

5. Ci hauv ob sab phlu
Qhov ci zoo ntawm cov teb kiln hauv ob sab phlu ncaj qha cuam tshuam rau lub neej kev pab cuam ntawm lub hauv ob sab phlu. Nyob rau hauv cov txheej txheem ci dhau los, vim tsis muaj kev paub tab thiab cov txheej txheem zoo, cov txheej txheem ntawm kev txhaj tshuaj hnyav rau combustion yog siv nyob rau hauv cov txheej txheem uas tsis kub, nruab nrab-kub thiab high-temperature ci txheej txheem. Qhov kub thiab txias tsis yooj yim rau kev tswj: thaum kub yuav tsum tau tswj hauv qab 150 ℃, cov roj hnyav tsis yooj yim rau hlawv; Thaum qhov kub siab tshaj 150 ℃, cua kub ceev ceev heev, thiab qhov kub ntawm qhov cub tawg yog qhov tsis sib xws. Qhov kub ntawm lub hauv ob sab phlu uas cov roj hnyav hlawv yog li 350 ~ 500 ℃ siab dua, thaum qhov kub ntawm lwm qhov yog qis. Nyob rau hauv txoj kev no, hauv ob sab phlu yog ib qho yooj yim rau tawg (lub yav dhau los castable hauv ob sab phlu tau tawg thaum lub sij hawm ci txheej txheem), cuam tshuam rau lub neej kev pab cuam ntawm lub hauv ob sab phlu.