Tom qab lub thauj tog rau nkoj welding, calcium silicate board nteg, thiab pwm kev them nyiaj yug ntawm cov cement rotary kiln hauv ob sab phlu, kev tsim khorefractory castablesyuav tsum tau ua raws li hauv qab no.
1) Kev Tshawb Fawb: Tshawb xyuas lub ntim thiab lub Hoobkas hnub ntawm cov castables. Lub neej txee dav dav yog 6 lub hlis. Tsis txhob ya raws thiab ua ib qho kev sim ua ntej los xyuas seb nws puas siv tsis tau; tshawb xyuas qhov tsos thiab huv ntawm cov cuab yeej yuav raug cam khwb cia; xyuas qhov kev ncaj ncees ntawm kev tsim kho tshuab thiab cov cuab yeej. Cov cuab yeej vibrating thiab lwm yam cuab yeej yuav tsum muaj cov khoom seem tsis zoo; tshawb xyuas hom, qhov loj me, layout thiab vuam zoo ntawm cov anchors. Hlau anchors yuav tsum tau kho nrog asphalt xim, yas hau thiab lwm yam kev kho mob expansion; xyuas cov ntaub ntawv nyob ib puag ncig refractory cib linings thiab rwb thaiv tsev txheej los tiv thaiv castable dej poob; xyuas cov dej tsim kho. Cov dej zoo yuav tsum ncav cuag qhov zoo ntawm cov dej haus; xyuas seb cov khoom siv cam khwb cia puas muaj qhov xoob (xws li lub qhov ncauj tiv thaiv hlau). Yog tias xoob, nws yuav tsum tau txuas nrog hlau daim hlau thiab tom qab ntawd welded.
Yog tias cov khoom saum toj no ua tsis tau raws li qhov yuav tsum tau soj ntsuam, lawv yuav tsum tau kho thiab tsim nyog ua ntej kev tsim kho. Cov khoom siv tas sij hawm thiab siv tsis tau yuav tsum tsis txhob siv. Thaum lub sij hawm tsim cov castables, nws yog ib qho tsim nyog los xyuas kom meej tias tsis muaj hluav taws xob hluav taws xob, dej tawm, los yog cuam tshuam ntawm kev tsim kho. Tshwj xeeb tshaj yog thaum nchuav rau saum lub hau ntawm lub hau npog, thaum qhov kev tsim kho tau nres nyob rau hauv nruab nrab, cov txheej txheem casting yuav muaj qhov tshwm sim ntawm cov xuab zeb, cov cua kub nkag mus rau txheej seam yuav hlawv cov anchors, thiab cov castable yuav vau.
2) Tus nqi ntawm cov dej ntxiv rau lub castable yuav tsum nruj me ntsis tswj raws li cov lus qhia rau kev siv thiab yuav tsum tsis txhob tshaj qhov txwv. Raws li kev ua kom ntseeg tau tias kev tsim kho kev ua tau zoo, cov dej ntxiv yuav tsum tsawg dua li ntau dua. Nco ntsoov tias cov dej huv yuav tsum tau siv kom tsis txhob muaj lwm yam khoom lossis cov khib nyiab hauv cov dej uas cuam tshuam rau kev sib zog.
3) Lub sijhawm sib xyaw ntawm cov khoom siv hluav taws xob yuav tsum tsis pub tsawg tshaj 5 feeb. Kev sib xyaw ua ke yog txwv nruj heev. Thaum sib tov, qhuav sib tov ua ntej. Tom qab qhuav sib tov yog sib xws, ntxiv 80% ntawm cov dej xav tau thiab do. Tom qab ntawd, nyob ntawm qhov qhuav thiab ntub dej, maj mam ntxiv cov dej ntxiv thiab txuas ntxiv stirring kom txog thaum tau txais kev ua haujlwm zoo sib xws. Thaum sib tov castables ntawm cov khoom sib txawv, lub tov khoom yuav tsum tau ntxuav ua ntej.
4) Castables yuav tsum tau siv nyob rau hauv tag nrho cov thoob thiab hnab. Cov stirred castables feem ntau yog siv li ntawm 30 feeb. Nyob rau hauv qhov kub thiab txias ua hauj lwm ib puag ncig, lub sij hawm no yuav tsum tau shortened tsim nyog. Castables uas tau pib solidified los yog txawm agglomerated yuav tsum tsis txhob muab nchuav rau hauv pwm thav duab. Nws yog nruj me ntsis txwv tsis pub ntxiv dej thiab do rau kev siv thib ob.
5) Cov castables poured rau hauv pwm yuav tsum tau vibrated tam sim ntawd nyob rau hauv cov khaubncaws sab nraud povtseg nrog ib tug vibrating pas nrig. Qhov siab ntawm txhua txheej yuav tsum yog ~<300mm, and the vibration interval should be about 250mm. Try to avoid touching the anchors during vibration, and do not vibrate or re-vibrate at the same position for a long time. After seeing the slurry on the surface of the castable, the vibrating rod should be slowly withdrawn to avoid segregation and voids in the castable layer. After the casting is completed, the cast body cannot be compressed or vibrated before solidification.
6) Thaum pouring ib cheeb tsam loj, nws yuav tsum tau tsim nyob rau hauv blocks. Qhov chaw ntawm txhua qhov chaw casting yuav tsum yog 1.5 ~ 2.0m. Kev nthuav cov pob qij txha yuav tsum tau tso tseg txhua 2.0m nrog cov plywood, thiab yuav tsum tsis txhob muaj qhov cuam tshuam. Kev nthuav dav pob qij txha yuav tsum tau sab laug ntawm lub sijhawm ntawm cov anchors.
7) Tom qab qhov saum npoo ntawm cov khoom castable yog qhuav, qhov chaw raug huab cua yuav tsum tau them nrog yas zaj duab xis tam sim ntawd. Tom qab kev teeb tsa thawj zaug, nws yuav tsum tau ywg dej tsis tu ncua kom cov av noo. Lub sijhawm kho yog tsawg kawg 2 hnub. Cov dej yuav tsum nquag nchuav rau thawj hnub. Tom qab kev teeb tsa zaum kawg ntawm cov khoom siv castable (feem ntau yog 6-8 teev), sab formwork tuaj yeem raug tshem tawm thiab dej tuaj yeem txuas ntxiv. Txawm li cas los xij, cov txheej txheem load-bearing tsuas tuaj yeem raug tshem tawm tom qab lub zog nce mus txog 70% (feem ntau 48 teev).
8) Tom qab lub formwork raug tshem tawm, lub cam khwb cia lub cev yuav tsum tau soj ntsuam raws sij hawm. Cov teeb meem zoo xws li honeycombs, tev thiab voids yuav tsum tau kho thiab kho raws sijhawm. Yog tias qhov teeb meem loj heev, qhov tsis xws luag yuav tsum tau chiseled tawm kom nthuav tawm lub thauj tog rau nkoj, thiab tom qab ntawd muab cov khoom zoo tib yam castable thiab compacted, thiab txuas ntxiv kho. Nws yog txwv tsis pub hloov nws nrog cement mortar.
Txhawm rau kom ua raws li kev tsim kho nrawm, qee pawg tsim kho arbitrarily nce cov dej ntxiv rau cov castables refractory. Cov castables sib xyaw tuaj yeem thauj mus rau pwm zoo li cov dej ntws nrog cov roj hmab hose ob peb meters lossis ntau tshaj kaum meters ntev; cov pwm lub zog tsis zoo, ua rau deformation ntawm lub hauv ob sab phlu, los yog nce cov dej ntxiv rau cov castables, cuam tshuam rau kev tsim kho kom zoo; cov pwm tsis txaus siab, thiab cov castables yog siv manually. Qhov teeb meem no feem ntau yog siv rau hauv kev tsim kho cov yeeb nkab hauv ob sab phlu, thiab qee zaum txawm nyob rau hauv kev tsim kho ntawm qee qhov preheater cone linings. Cov pob qij txha nthuav dav, lub rooj vag li qub thiab lwm yam khoom siv yuav tsum tau prefabricated rau hauv av ua ntej kev teeb tsa. Cov khoom prefabricated no muaj cov kev cai nruj heev ntawm kev tsim pwm vim lawv qhov nyuaj geometric qhov ntev. Cov pwm yog ua los ntawm cov hlau hlau phaj thiab tsis tuaj yeem deformed thaum siv. Yog li ntawd, cov pwm txhawb nqa yuav tsum ruaj khov thiab cov pwm txhawb nqa txoj haujlwm yuav tsum raug.
