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.
Kev tshuaj xyuas: Tshawb xyuas lub ntim thiab lub Hoobkas hnub ntawm lub castable, uas feem ntau muaj lub neej txee ntawm 6 lub hlis, tsis txhob ya raws, thiab ua qhov kev sim ua ntej los xyuas seb nws puas yog tsis raug; tshawb xyuas qhov tsos thiab huv ntawm cov cuab yeej yuav raug cam khwb cia; xyuas qhov tseeb ntawm kev tsim kho tshuab thiab cov cuab yeej, thiab cov cuab yeej vibrating thiab lwm yam cuab yeej yuav tsum muaj cov khoom seem tsis zoo; tshawb xyuas hom, qhov loj me, kev teeb tsa thiab vuam zoo ntawm cov thauj tog rau nkoj, thiab cov hlau thauj tog rau nkoj yuav tsum tau kho kom zoo nrog cov xim asphalt, lub kaus mom yas thiab lwm yam kev kho mob nthuav dav; xyuas cov ntaub ntawv nyob ib puag ncig refractory cib linings thiab rwb thaiv tsev txheej los tiv thaiv dej poob ntawm castables; xyuas cov dej tsim kho, thiab nws cov dej zoo yuav tsum ncav cuag cov dej haus zoo; xyuas seb cov khoom siv cam khwb cia muaj qhov chaw, yog tias xoob, nws yuav tsum tau muab khi nrog cov hlau phaj thiab ces welded.
Yog tias cov khoom saum toj no tsis tsim nyog, 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 kho ntawm refractory castables, nws yog ib qho tsim nyog los xyuas kom meej tias tsis muaj hluav taws xob tawm, dej tawm, los yog cuam tshuam ntawm kev tsim kho. Tshwj xeeb tshaj yog thaum nchuav rau saum lub hau ntawm lub hau npog, ib zaug kev tsim kho tau nres nyob rau hauv nruab nrab, cov txheej txheej txheej 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.
Tus nqi ntawm cov dej ntxiv rau lub castable yuav tsum tau tswj nruj me ntsis 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. Ua tib zoo saib xyuas kev siv dej huv kom tsis txhob muaj lwm yam khoom lossis cov khib nyiab hauv cov dej uas cuam tshuam rau kev sib zog.
Lub sijhawm sib xyaw ntawm cov castable yuav tsum tsis pub tsawg tshaj 5 feeb. Nws yog txwv tsis pub siv phau ntawv sib xyaw. 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.
Lub refractory castables yuav tsum tau siv nyob rau hauv tag nrho cov thoob thiab hnab. Qhov sib xyaw castable feem ntau yog siv li ntawm 30 feeb. Hauv qhov chaw ua haujlwm kub thiab qhuav qhuav, lub sijhawm no yuav tsum tau ua kom luv luv. Lub castable uas tau pib solidified los yog txawm agglomerated yuav tsum tsis txhob muab nchuav rau hauv pwm ncej. Nws yog nruj me ntsis txwv tsis pub ntxiv dej thiab do rau kev siv thib ob.
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. The cast body after pouring should not be subjected to pressure or vibration before solidification.
Thaum pouring ib cheeb tsam loj, nws yuav tsum tau tsim nyob rau hauv blocks. Qhov chaw ntawm txhua qhov dej yuav tsum yog 1.5 ~ 2.0m. Cov pob qij txha nthuav dav yuav tsum tau tso tseg txhua 2.0m nrog cov plywood, thiab yuav tsum tsis txhob ua txhaum. Cov pob qij txha nthuav dav yuav tsum tau sab laug ntawm lub sijhawm ntawm cov anchors.
Tom qab qhov saum npoo ntawm cov khoom siv refractory castables qhuav, qhov chaw raug huab cua yuav tsum tau them nrog yas zaj duab xis tam sim ntawd. Tom qab qhov 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 qhov kawg ntawm cov khoom 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).
Tom qab lub formwork raug tshem tawm, lub cam khwb cia lub cev yuav tsum tau soj ntsuam nyob rau hauv lub 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.
