Nkag siab cov yam ntxwv ntawm cov iav cub tawg silicon cib rau kev kho vuam

(1) Cov khoom muaj cov qauv compact thiab hnav tsis kam
Lub ntsiab crystalline theem ntawm iav kiln silica cib yog tsim los ntawm high hardness ntxhia corundum (Mohs hardness 9.0~ 9.2), silicon carbide (Mohs hardness 9.0 ~ 9.5), thiab mullite (Mohs hardness 7. {9}}~ 7.5). Cov txheej txheem ntom ntom ntawm cov khoom lag luam yog qhov siab, thiab qhov ntom ntom feem ntau yog feem ntau ntawm 2.7 thiab 3. {} G / cm3. Qhov kub ib txwm hnav tsis kam ntawm cov ntaub ntawv refractory nyob ntawm lawv lub zog thiab cov qauv compactness. Cov ntaub ntawv nrog lub zog siab thiab qhov ceev tau hnav tsis kam. Cov hauv ob sab phlu ntawm cov cement rotary kiln tau raug rau lub sijhawm ntev dov kev sib txhuam ntawm cov ntaub ntawv, thiab hnav yog ib qho laj thawj tseem ceeb rau kev puas tsuaj ntawm cov ntaub ntawv refractory. Nws qhov ntom ntom, lub zog, thiab hnav tsis kam yog ntau dua rau cov ntawm anti flaking High Alumina Cib thiab Magnesium Aluminium Spinel Cib. Silica-molybdenum refractory cib muaj cov txiaj ntsig zoo hauv thaj chaw tua hluav taws thib ob, thaj chaw lim, thiab lwm qhov chaw ntawm cov cement rotary kiln. Nws tuaj yeem hais tias kev hnav zoo ua haujlwm ua lub luag haujlwm tseem ceeb heev.
iav kiln silica cib
(2) High load softening kub, zoo high-temperature ua haujlwm
Lub load softening kub ntawm silica bricks yog siab tshaj 1450 degree, siab tshaj 1650 degree. Cov khoom sib txawv ntawm cov khoom muaj qee qhov sib txawv hauv kev thauj khoom softening kub. Qhov kub ntawm lub refractory cib nto ntawm qhov sib txawv ntawm cov cement rotary kiln hauv ob sab phlu nws txawv, nrog rau qhov kub thiab txias ntawm qhov chaw hluav taws xob thib ob thiab thaj chaw hloov pauv pem hauv ntej mus txog 1400 degree, uas siab dua qhov kub ntawm silica cib nto ntawm iav. kiln nrog rau qhov chaw tua hluav taws (vim lub qhov cub tiv thaiv ntawm daim tawv nqaij thaum tua, qhov kub ntawm lub refractory cib nto yog 900 ~ 1000 degree). Lub load softening kub Performance index ntawm cov cib no kuj tshaj qhov uas feem ntau siv los tiv thaiv flaking siab alumina cib thiab phosphate siab alumina refractory bricks (load softening kub yog 1300 ~ 1520 degree).
Muab piv rau thaj chaw tua hluav taws, thaj chaw hloov pauv tau yooj yim rau kev cuam tshuam ntawm kev txo cov huab cua thiab thermal load vim nws tsis muaj kev tiv thaiv ntawm daim tawv nqaij, thiab nws cov kev pab cuam lub neej yeej ib txwm yog ib qho teeb meem rau cov cement rotary kilns. Yog li ntawd, qee cov cement nroj tsuag siv magnesium aluminium spinel cov khoom hauv thaj chaw hloov pauv. Raws li kev tshawb fawb ntawm magnesia alumina spinel cib siv nyob rau hauv qhov kev hloov pauv ntawm ib qho loj cement rotary kiln nrog lub peev xwm ntawm 5000 t / d hauv ib lub Hoobkas, nws tau txiav txim siab tias magnesia alumina spinel refractory cib siv nyob rau hauv pem hauv ntej kev hloov pauv cheeb tsam yog tsis yog. corrosive, tab sis vim alkali deposition nyob rau hauv qhib pores, cov qauv yog densified, uas ua rau tsim nyob rau hauv lub tsim ntawm txawv seem ntawm tib refractory cib, ua rau lub kub nto ntawm lub refractory cib kom tev tawm thiab tsim cov kab nrib pleb, uas ua rau muaj kev puas tsuaj rau lub refractory cib. hauv ob sab phlu. Vim nws cov qauv ntom nti, tshwj xeeb yog tsim ntawm kev txuas ntxiv SOO2 DUA cov tshuaj, thiab cov khoom siv tau ruaj khov ntawm Al2O3, Sic, thiab Sio2, uas tsis txhob ua txhaum cai nrog So2, O2, CO2, thiab lwm yam gases tsim nyob rau hauv lub kiln, thiab tsis hnov ​​mob chemically nrog cov ntaub ntawv cement, silica refractory cib muaj zog corrosion kuj. Thib ob, thermal shock stability ntawm iav kiln silica cib yog qhov zoo. Raws li nws muaj qee qhov nyiaj ntawm SiC, nws paub zoo tias SiC muaj cov thermal conductivity siab thiab cov coefficient me me ntawm thermal expansion, uas ua rau muaj txiaj ntsig zoo ntawm thermal shock stability ntawm cov khoom. Kev ntsuas dej txias ntawm 1100 degree tau ua rau ntau tshaj 10 zaug, nrog rau qhov siab ntawm 46 zaug. Yog li ntawd, silicon bricks rau cement rotary kilns tsis tev tawm los yog tawg, thiab tuaj yeem txhim kho lawv lub neej kev pab cuam.
(3) Txo qhov cub kub, zoo thermal rwb thaiv tsev ua haujlwm
Thermal conductivity ntawm silica cib [2.3 ~ 2.5 W / (m ˙ K)] Alkaline khoom [2.69 txog 2.74 W / (m ˙ K)] Tsawg, yog li cov thermal rwb thaiv tsev ntawm silica cib kuj zoo. Siv iav kiln silica bricks nyob rau hauv lub thib ob firing cheeb tsam, kev hloov chaw, preheating cheeb tsam, kiln tus Tsov tus tw, tertiary cua duct, decomposition rauv, thiab lwm qhov chaw ntawm ib tug loj rotary kiln tuaj yeem txo qhov kub ntawm lub tog raj kheej los ntawm ntau tshaj 100 degree piv rau alkaline cib.