Refractory Castables Rau Cement Rotary Kiln

Refractory Castables Rau Cement Rotary Kiln

1. Cov hlau fiber reinforced refractory castables rau cement kiln
Cov hlau fiber reinforced castables feem ntau yog siv cov hlau stainless hlau uas tiv taus cua sov rau hauv cov khoom siv, kom cov khoom siv muaj zog dua thiab tiv taus thermal shock, yog li ua rau cov khoom siv tiv taus hnav thiab lub neej ua haujlwm ntev dua. Cov khoom siv no feem ntau yog siv rau cov khoom siv tiv taus kub siab xws li lub qhov cub, lub qhov pub mis, lub qhov chaw nres nkoj tiv taus hnav thiab lub hauv paus boiler fais fab.

2. Cov cement tsawg refractory castables rau cement kiln
Cov castables refractory uas tsis muaj cement feem ntau muaj xws li high-alumina, mullite thiab corundum refractory castables. Cov khoom no muaj cov yam ntxwv ntawm lub zog siab, tiv thaiv kev txhuam, tiv taus kev hnav thiab kev ua tau zoo heev. Tib lub sijhawm, cov khoom siv tuaj yeem ua rau cov castables uas ci sai thiab tawg raws li tus neeg siv xav tau lub sijhawm ci.

3. Cov castables uas tiv taus alkali siab rau cov cement kiln
Cov castables uas muaj zog heev thiab tiv taus alkaline muaj kev tiv taus kev yaig los ntawm cov pa roj alkaline thiab slag, thiab muaj lub neej ua haujlwm ntev. Cov khoom siv no feem ntau yog siv rau cov qhov rooj kiln, cov cub tawg, cov tshuab ua ntej cua sov, cov tshuab tswj hwm, thiab lwm yam thiab lwm yam khoom siv hauv chav ua noj hauv kev lag luam.

Txoj kev tsim kho ntawm cov khoom siv high-aluminium low-cement castable rau rotary kiln lining
Kev tsim cov khoom siv high-aluminium low-cement castable rau rotary kiln lining yuav tsum tau ua tib zoo saib xyuas tsib txoj hauv kev hauv qab no:

1. Kev txiav txim siab ntawm cov pob qij txha nthuav dav
Raws li qhov kev paub dhau los ntawm kev siv cov castables uas muaj cov txhuas siab thiab cov cement qis, cov pob qij txha nthuav dav yog qhov tseem ceeb uas cuam tshuam rau lub neej ua haujlwm ntawm cov ntaub thaiv qhov cub rotary kiln. Cov pob qij txha nthuav dav thaum lub sijhawm nchuav cov ntaub thaiv qhov cub rotary kiln raug txiav txim siab raws li hauv qab no:

(1) Cov pob qij txha ncig: 5m seem, 20mm txhuas silicate fiber xav tau raug muab tso rau ntawm cov castables, thiab cov fibers raug compacted tom qab nthuav dav kom buffer qhov kev ntxhov siab nthuav dav.

(2) Cov pob qij txha tiaj tus: Txhua peb daim ntawm lub castable raug muab tais nrog 100 hli plywood tob hauv qhov kev taw qhia sab hauv, thiab ib qho sib koom ua ke sab laug ntawm qhov kawg ua haujlwm, rau tag nrho 6 daim.

(3) Thaum lub sijhawm nchuav, 25 lub qhov tso pa tawm siv rau ib lub 'meter' square kom tso tawm qee qhov kev ntxhov siab nthuav dav thaum lub sijhawm ua kom lub qhov cub tawm.

2. Kev txiav txim siab ntawm qhov kub thiab txias ntawm kev tsim kho
Qhov kub tsim nyog rau kev tsim kho ntawm cov hlau siab-aluminium low-cement castables yog 10 ~ 30 ℃. Yog tias qhov kub thiab txias tsawg, yuav tsum ua raws li cov hauv qab no:

(1) Kaw qhov chaw nyob ib puag ncig kev tsim kho, ntxiv cov chaw ua kom sov, thiab tiv thaiv kom tsis txhob khov.

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

3. Sib tov
Txheeb xyuas qhov sib tov ntau npaum li cas ib zaug raws li lub peev xwm ntawm lub tshuab sib tov. Tom qab txiav txim siab qhov sib tov ntau npaum li cas lawm, ntxiv cov khoom siv casting hauv lub hnab thiab cov khoom me me hauv lub hnab rau hauv lub tshuab sib tov tib lub sijhawm. Ua ntej pib lub tshuab sib tov kom sib tov qhuav 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 cov av nkos. Tom qab sib tov tag nrho, sim nchuav, thiab qhov ntau ntawm cov dej ntxiv tau txiav txim siab ua ke nrog qhov xwm txheej vibration thiab slurry. Tom qab txiav txim siab qhov ntau ntawm cov dej ntxiv, nws yuav tsum tau tswj hwm nruj me ntsis. Thaum xyuas kom meej tias cov slurry tuaj yeem vibrated, dej tsawg li sai tau yuav tsum tau ntxiv (qhov piv txwv ntawm cov dej ntxiv rau lub castable no yog 5.5% -6.2%).

4. Kev Tsim Kho
Lub sijhawm tsim kho ntawm cov khoom siv high-aluminium low-cement castable yog li 30 feeb. Cov khoom siv dehydrated lossis condensed tsis tuaj yeem sib xyaw nrog dej thiab yuav tsum tau muab pov tseg. Siv lub vibrating pas nrig los co kom ua tiav slurry compaction. Lub vibrating pas nrig yuav tsum tau txuag kom tiv thaiv lub spare pas nrig los ntawm kev ua haujlwm thaum lub vibrating pas nrig tsis ua haujlwm.
Kev tsim cov khoom siv castable yuav tsum tau ua tiav hauv cov strips raws li lub axis ntawm lub rotary 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. Tib lub sijhawm, xyuas seb qhov vuam ntawm lub anchor thiab qhov chaw asphalt xim kho puas nyob hauv qhov chaw. Txwv tsis pub, yuav tsum tau ua cov kev ntsuas kho.
Hauv kev tsim cov kab txaij, kev tsim cov kab txaij yuav tsum tau nchuav qhib los ntawm tus tw ntawm lub qhov cub mus rau lub taub hau ntawm lub qhov cub hauv qab ntawm lub cev qhov cub. Kev txhawb nqa ntawm daim ntawv yuav tsum tau nqa tawm ntawm lub anchor thiab lub phaj hlau. Lub phaj hlau thiab lub anchor tau ruaj khov nrog cov ntoo thaiv. Qhov siab ntawm daim ntawv txhawb nqa yog 220mm, dav yog 620mm, ntev yog 4-5m, thiab lub kaum sab xis yog 22.5 °.
Yuav tsum ua kom tiav qhov kev tsim lub cev casting thib ob tom qab lub strip tau teeb tsa thiab tshem tawm cov pwm. Ib sab, daim template zoo li lub voj voog siv los kaw qhov casting ntawm lub taub hau ntawm lub cub tawg mus rau tus tw ntawm lub cub tawg. Tus so zoo ib yam.
Thaum cov khoom siv casting raug co, cov av nkos sib xyaw yuav tsum tau ntxiv rau hauv lub pwm log tsheb thaum co. Lub sijhawm co 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 kub thiab txias ntawm qhov chaw tsim kho. Nws yog qhov tsim nyog los xyuas kom meej tias qhov demoulding tau ua tiav tom qab cov khoom siv casting tau teeb tsa thiab muaj qee lub zog.

5. Ci ntawm daim ntaub
Qhov zoo ntawm kev ci ntawm lub qhov cub rotary cuam tshuam ncaj qha rau lub neej ua haujlwm ntawm lub qhov cub. Hauv cov txheej txheem ci yav dhau los, vim tsis muaj kev paub dhau los thiab cov txheej txheem zoo, txoj kev txhaj tshuaj roj hnyav rau kev sib xyaw tau siv rau hauv cov txheej txheem ci qis, nruab nrab kub thiab kub siab. Qhov kub nyuaj rau tswj: thaum qhov kub xav tau tswj qis dua 150 ℃, cov roj hnyav tsis yooj yim hlawv; thaum qhov kub siab dua 150 ℃, qhov kub ceev ceev dhau, thiab qhov kub faib hauv lub qhov cub tsis sib xws heev. Qhov kub ntawm lub qhov cub uas cov roj hnyav hlawv yog li 350 ~ 500 ℃ siab dua, thaum qhov kub ntawm lwm qhov qis. Ua li no, lub qhov cub yooj yim tawg (lub qhov cub castable yav dhau los tau tawg thaum lub sijhawm ci), cuam tshuam rau lub neej ua haujlwm ntawm lub qhov cub.