Vim Li Cas Peb Yuav Tsum Tshawb Xyuas Cov Txheej Txheem Ntawm Refractory Bricks?

Qhov sib xyaw ntawm cov cib refractory yog ib qho tseem ceeb uas txiav txim siab lawv cov kev ua tau zoo, thiab nws yog lub hauv paus tseem ceeb rau kev xaiv cov cib refractory uas ua tau raws li qhov yuav tsum tau ua ntawm cov hauv ob sab phlu.
Tshuaj muaj pes tsawg leeg tsom xam ntawm refractory bricks yog hais txog kev siv tshuaj thiab lub cev lub hauv paus ntsiab lus los txiav txim cov tshuaj muaj pes tsawg leeg ntawm refractory bricks. Nws tau muab faib ua qhov kev soj ntsuam zoo (kev txheeb xyuas qhov muaj pes tsawg leeg ntawm cov cib refractory) thiab kev soj ntsuam kom muaj nuj nqis (txiav txim siab cov ntsiab lus ntawm cov khoom siv no). Tshuaj muaj pes tsawg leeg tsom xam ntawm refractory bricks muaj xws li tshuaj ntub dej tsom xam thiab ntsuas ntsuas.
Refractory cib yog cov khoom siv ntxhia, thiab cov khoom ntawm cov cib yog qhov kev xav ntawm lawv cov minerals thiab microstructure. Hais txog qhov no, thov xa mus rau cov tshuaj ntxhia hauv cov khoom siv refractory kom ntxaws. Yog li ntawd, thaum soj ntsuam cov kev cuam tshuam ntawm cov muaj pes tsawg leeg ntawm refractory bricks ntawm lawv cov khoom, nws tsis yog ib qho yooj yim txaus los soj ntsuam thiab tshuaj xyuas qhov teeb meem los ntawm kev xav ntawm cov tshuaj muaj pes tsawg leeg, thiab ntxiv kev soj ntsuam ntawm lawv cov tshuaj mineral muaj pes tsawg leeg yuav tsum tau ua.
Kev tshuaj xyuas ntub dej ntawm cov cib refractory (raws li cov tshuaj tiv thaiv) suav nrog kev ntsuas qhov hnyav thiab ntsuas qhov ntim; Cov cuab yeej tsom xam suav nrog kev tsom xam kho qhov muag thiab kev tshuaj xyuas electrochemical. Cov cuab yeej tsom rau refractory cib feem ntau suav nrog fluorescence X-ray spectrum tsom xam, atomic absorption spectroscopy tsom, nplaim photometric tsom, colorimetric tsom xam, thiab lwm yam. tau teev nyob rau hauv cov qauv refractory cib, thiab tseem yog lub hauv paus tseem ceeb rau cov qauv zoo ntawm refractory bricks nyob rau hauv cov txheej txheem ntau lawm. Tuam Tshoj muaj 60 lub teb chaws thiab kev lag luam qauv rau cov tshuaj muaj pes tsawg leeg tsom xam ntawm refractory bricks.
Nyob rau hauv cov xwm txheej ntawm cov tshuaj muaj pes tsawg leeg ntawm refractory cib, vim qhov sib xws ntawm cov khoom faib thiab cov txheej txheem sib txawv, hom, ntau, qhov ntau thiab tsawg, thiab kev sib koom ua ke ntawm cov ntxhia hauv cov cib sib txawv. Qhov sib txawv ntawm microstructure no ua rau muaj qhov sib txawv ntawm kev ua haujlwm ntawm cov cib. Piv txwv li, siliceous cib nrog tib SiO2 cov ntsiab lus tuaj yeem muaj cov khoom sib txawv vim yog tsim ntawm ob lub pob zeb nrog cov qauv sib txawv thiab cov khoom - tridymite thiab cristobalite - nyob rau hauv cov txheej txheem sib txawv. Txawm hais tias cov ntxhia muaj pes tsawg leeg ntawm cov cib refractory yog tas li, qhov sib txawv ntawm cov nplej loj, cov duab, thiab kev faib cov ntxhia theem tuaj yeem muaj kev cuam tshuam loj rau cov khoom ntawm cov cib.
Muaj ntau hom refractory bricks, thiab lawv cov ntxhia muaj pes tsawg leeg feem ntau muab faib ua ob pawg: lub ntsiab crystalline theem thiab matrix theem. Lub ntsiab crystalline theem yog hais txog cov khoom uas tsim lub cev tseem ceeb ntawm cov qauv cib refractory thiab muaj lub siab melting point. Lub ntsiab Cheebtsam nyob rau hauv refractory bricks sib txawv raws li lawv equilibrium system muaj pes tsawg leeg thiab txheeb ze cov ntsiab lus, thiab cov siv lead ua theem, kom muaj nuj nqis, thiab bonding lub xeev ntawm lub ntsiab Cheebtsam ncaj qha txiav txim lub zog ntawm lub cib.
Lub ntsiab tivthaiv nyob rau hauv refractory bricks yog hais txog cov tshuaj muaj pes tsawg leeg uas suav rau feem coob thiab plays lub luag hauj lwm txiav txim siab nyob rau hauv high-temperature ntawm cov khoom. Yog vim li cas vim li cas cov khoom siv refractory muaj kev tiv thaiv zoo rau qhov kub thiab txias thiab ntau cov ntaub ntawv refractory muaj lawv tus kheej cov yam ntxwv nyob ntawm tag nrho los yog hauv paus ntawm cov khoom tseem ceeb. Yog li ntawd, tag nrho cov xim yuav tsum tau them rau lub ntsiab Cheebtsam ntawm cov ntaub ntawv refractory. Feem ntau, kev faib cov ntaub ntawv refractory raws li lawv cov tshuaj muaj pes tsawg leeg, nrog rau kev faib tawm ntawm ntau cov ntaub ntawv refractory ntawm tib cov ntaub ntawv mus rau ntau qib, feem ntau txiav txim siab los ntawm hom khoom tseem ceeb thiab lawv cov ntsiab lus. Lub ntsiab Cheebtsam ntawm refractory bricks yog tag nrho cov yooj yim tshuaj los yog cov tebchaw nrog siab melting point los yog siab decomposition kub thiab siab lattice zog. Nws yuav tsum tsim kom muaj kev ruaj khov thiab ua haujlwm siab thaum lub sij hawm tsim khoom lossis kev pabcuam ntawm cov cib refractory, nrog rau cov khoom muaj txiaj ntsig zoo thiab yooj yim extraction thiab siv.