I. Kev sib raug zoo ntawm qhov hnyav thiab qhov hnyav
Bulk density (or simply "volume density") directly determines the weight per unit volume: the lower the volume density, the lighter the material; qhov siab dua qhov ntim ceev, cov khoom hnyav dua. Hauv kev tsim kiln, qhov hnyav feem ntau yog qhov txwv tsis pub, tshwj xeeb tshaj yog rau kev tshem tawm lossis nyias- cov phab ntsa xws li cov kav dej, cov chaw tso dej, thiab cov chimneys. Kev hnyav hnyav hnyav tuaj yeem ua rau muaj kev thauj khoom ntau dhau ntawm cov qauv hlau thiab tseem cuam tshuam rau lub qhov cub lub neej.
II. Kev lag luam-tawm ntawm Qhov Loj Loj thiab Hnav Tsis Txaus / rwb thaiv tsev
1. Rwb thaiv tsev yuav tsum:Lub teeb yuag refractory castablesmuaj porosity siab thiab tsis tshua muaj thermal conductivity; qhov tsawg dua qhov ntim ceev, qhov zoo dua cov nyhuv rwb thaiv tsev. Kev txuag hluav taws xob yog qhov zoo tshaj plaws thaum lub ntim ntim tsawg dua lossis sib npaug li 1.2 g / cm³; Yog tias nws siab tshaj 1.3 g / cm³, qhov kev ua haujlwm rwb thaiv tsev poob qis.
2. Hnav Resistance Requirements: Cov ntim ntim ntau ntxiv ua rau muaj cov ntsiab lus sib txuas ntawm cov khoom sib sau ua ke, yog li txhim kho kev tiv thaiv corrosion thiab mechanical hnav. In areas subjected to intense flame erosion, if the bulk density is below 1.3 g/cm³, the surface is prone to powdering and peeling.
3. Kev Ntsuas Tag Nrho: Thaum ib cheeb tsam yuav tsum muaj kev tiv thaiv hluav taws xob thiab tiv thaiv kev yaig, "lub teeb ua haujlwm hauv ob sab phlu" nrog qhov ntom ntom ntawm 1.5 g / cm³ raug pom zoo, ntsuas qhov hnyav txwv thiab hnav tsis kam.
III. Cov ntsiab lus tseem ceeb ua haujlwm rau 1.5 Bulk Density Lightweight Castables
1. Raw Material Selection: Artificially synthesized lightweight aggregates (xws li lightweight mullite and lightweight bauxite) yuav tsum tau siv los ua cov khoom tseem ceeb. Qhov sib ntxiv ntawm hnyav impurities xws li khib nyiab cib thiab khib nyiab castables yog nruj me ntsis txwv tsis pub; txwv tsis pub, qhov ceev yuav dhau los ua tsis muaj kev tswj hwm thiab lub zog yuav txo qis.
2. Bonding System: Qhia ceev ceev- ziab thiab ceev- cov khoom siv tawv tawv- tawg- cov ntaub ntawv pov thawj fibers (0.1% ~ 0.15%)- kom tshem tawm kev ntxhov siab; metallic silicon (tsawg dua los yog sib npaug li 2%) los txhim kho siab -kub oxidation kuj; thiab ntshiab calcium aluminate cement (Ntau dua lossis sib npaug ntawm Al₂O₃ 70%) kom ntseeg tau tias muaj zog thaum ntxov.
3. Kev tsim kho kev ua haujlwm: Cov ntsiab lus dej yog tswj ntawm 12% ~ 14%, kev co ntws tus nqi Ntau dua lossis sib npaug ntawm 180 mm, ua kom nws tus kheej - ntws puv hauv thaj chaw nyuaj; 24-teev demolding zog Ntau dua los yog sib npaug rau 4 MPa, ua tau raws li qhov yuav tsum tau ua kom ceev ceev.
IV. Tej kev siv
1. Chimneys and Flues: Serving as both insulation and working layer, the 1.5-bulk dense lining can control the outer shell temperature below 80℃and resist the scouring of dusty flue gas.
2. Tshav Chamber Sab saum toj: Qhov hnyav yog txwv, tab sis nws yuav tsum tiv taus qhov cuam tshuam rov qab; 1.5-bulk tuab hauv ob sab phlu tuaj yeem txo mus rau 100 ~ 120 hli, txo qhov hnyav ntau dua 35% piv rau cov khoom hnyav hnyav.
3. Cov Cuab Yeej Kub Kub: Cov kev taw qhia ntawm Airflow hloov sai sai, nrog lub kaum ntse ntse loj; the 1.5-bulk dense lining has a lifespan of over 3 years, twice that of the 1.2-bulk dense lining.
V. Cov lus pom zoo rau Pure Insulation Cheebtsam
Rau cov cheeb tsam uas tsis muaj nplaim hluav taws kub hnyiab lossis cov khoom siv coj los siv, xws li cov txheej txheem rwb thaiv tsev sab nraud rau cov phab ntsa ntawm lub qhov cub thiab cov yeeb nkab rwb thaiv tsev txheej, cov khoom siv hluav taws xob sib sib zog nqus castables nrog qhov ntom ntom ntawm 1.0 ~ 1.2 g / cm³ yog nyiam. Lub thickness yuav tsum tau txiav txim raws li thermal xam. Feem ntau, rau txhua txhua 0.1 g / cm³ txo, 100 mm tuab hauv ob sab phlu tuaj yeem txo qhov load los ntawm 10 kg / m², nce zog txuag los ntawm 3% ~ 5%.
VI. Txoj Kev Txiav Txim Yooj Yim Yooj Yim
1. Cov tsos mob: Cov khaub ncaws hnav khaub ncaws- ntu, tsis muaj qhov loj dua 3 hli, thiab tsis muaj hmoov poob thaum rub los ntawm tes.
2. Tej qhov ntom ntom: Tom qab ntawm - qhov chaw kuaj thiab ziab, tus nqi ntsuas yuav tsum sib txawv ntawm tus nqi nominal tsawg dua lossis sib npaug rau ± 0.05 g / cm³.
3. Chav ntsuas kub siab tiv thaiv: Tom qab ziab ntawm 110℃rau 24 h, lub zog yuav tsum siab dua los yog sib npaug rau 8 MPa (1.5 bulk density grade), kom ntseeg tau tias qhov tawg ntawm tsawg dua 2% thaum lub sij hawm thauj mus los thiab kev teeb tsa.
Lub teeb yuag refractory castables tsis tas yuav "qhov sib dua qhov zoo dua," los yog lawv yuav tsum "hnyav ntau dua." Hloov chaw, qhov sib npaug yuav tsum raug ntaus ntawm qhov hnyav, thermal rwb thaiv tsev, thiab kev puas tsuaj los ntawm kev ua haujlwm tshwj xeeb. Cov neeg tsim qauv yuav tsum xub txiav txim siab qhov siab tshaj plaws uas tso cai rau kev thauj khoom thiab qhov siab tshaj plaws kev pabcuam kub rau txhua qhov chaw, tom qab ntawd xaiv cov qib siab ntau raws li qhov kev txiav txim ntawm "kub- yaig- hnyav." Thaum kawg, los ntawm kev sib raug zoo ntawm cov khoom siv raw thiab cov txheej txheem tsim kho, cov hom phiaj ntawm kev ua haujlwm ntev, kev siv hluav taws xob tsawg, thiab lub teeb yuag tuaj yeem ua tiav.
