Njerwa ya silika imakaniza asidi ndipo imakhala ndi kukana kukokoloka kwa asidi. Slica njerwa refractoriness pansi katundu ndi mpaka 1640 ~ 1690 ℃, zikuoneka koyamba kufewetsa kutentha ndi 1620 ~ 1670 ℃ ndi kachulukidwe weniweni ndi 2.35g/cm3. Njerwa yamoto ya silicon imatha kugwira ntchito kutentha kwambiri kwa nthawi yayitali ndikusunga bata popanda kusintha. Njerwa za Silicon rectory zili ndi zopitilira 94% za SiO2. Njerwa ya silicate imakhala ndi mphamvu zotentha kwambiri komanso kutsika kwamphamvu kwamafuta. Njerwa yamoto ya silicate imapangidwa ndi miyala ya silika yachilengedwe monga zopangira, zowonjezeredwa ndi mineralizer yoyenera kulimbikitsa quartz mu thupi lobiriwira losinthidwa kukhala tridymite ndikuwotchedwa pang'onopang'ono kutentha kwa 1350 ~ 1430 ℃ pochepetsa mlengalenga. Kutentha mpaka 1450 ℃, pali 1.5 ~ 2.2% ya kuchuluka kwa voliyumu yonse. Kuwonjezeka kumeneku kudzapangitsa kuti mgwirizanowo ukhale wotsekedwa ndikuonetsetsa kuti zomangamanga zimasunga mpweya wabwino komanso mphamvu zomanga.
Silicon fire block ndi refractory njerwa kuti silica zili zoposa 93%, 50% -80% ya tridymite, 10% -30% ya cristobalite, quartz ndi galasi gawo, pafupifupi 5% -15%. Mapangidwe a mineralogical a njerwa ya silicate makamaka ndi quartz ndi quartz, komanso quartz yaying'ono ndi vitreous. Scale quartz, quartzite quartz ndi quartz otsalira amasintha kwambiri mu voliyumu chifukwa cha kusintha kwa mawonekedwe a kristalo pa kutentha kochepa, kotero kukhazikika kwa matenthedwe a silicate refractory njerwa kumakhala kosauka kutentha kochepa. Pogwiritsira ntchito, pansi pa 800 ℃ kuti muchepetse kutentha ndi kuzizira, kuti mupewe ming'alu. Choncho sikuyenera kukhala pansi pa 800 ℃ kutentha kudumpha kwa uvuni.
Njerwa zamoto za silicate zimapangidwa kuchokera ku quartzite yokhala ndi mchere wochepa. Ikatenthedwa pa kutentha kwambiri, njerwa za silika refractory mchere zimapangidwa ndi sikelo ya quartz, quartzite quartz, magalasi ndi minyewa ina yovuta yomwe imapangidwa pakutentha kwambiri, ndipo zomwe zili mu AiO2 ndizoposa 93%. Pakati pa njerwa za silika zowotchedwa bwino, zomwe zili mu sikelo ya quartz ndizokwera kwambiri, zomwe zimawerengera 50% ~ 80%. cristobalit inali yotsatira, yowerengera 10% mpaka 30%. Zomwe zili mu gawo la quartz ndi galasi zimasinthasintha pakati pa 5% ndi 15%
Chinthu/Index | QG-0.8 | QG-1.0 | QG-1.1 | QG-1.15 | QG-1.2 |
SiO2% | ≥88 | ≥91 | ≥91 | ≥91 | ≥91 |
Kuchulukana kwakukulu g/cm3 | ≤0.85 | ≤1.00 | ≤1.10 | ≤1.15 | ≤1.20 |
Cold Crushing Strength Mpa | ≥1.0 | ≥2.0 | ≥3.0 | ≥5.0 | ≥5.0 |
0.2Mpa Refractoriness Under Load T0.6 ℃ | ≥1400 | ≥1420 | ≥1460 | ≥1500 | ≥1520 |
Kusintha Kokhazikika Kwa Linear Pa Kutenthetsanso % 1450 ℃ * 2h | 0~+0.5 | 0~+0.5 | 0~+0.5 | 0~+0.5 | 0~+0.5 |
20 ~ 1000 ℃ Kukula kwamafuta 10 ~ 6 / ℃ | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 |
Thermal Conductivity (w/m*k) 350 ℃ | 0.55 | 0.55 | 0.6 | 0.65 | 0.7 |
Njerwa zamoto za silika zimagwiritsidwa ntchito ngati zida zodzitchinjiriza zoteteza khoma lachipinda chophika ndi chowotcha mu uvuni wa coke, chipinda chosinthira ndi thumba la slag mu ng'anjo yamoto yopangira zitsulo, ng'anjo yamoto yonyowa ndi ng'anjo yosungunuka yamagalasi, ndi malo ena olemetsa komanso pamwamba pa ceramic. ng'anjo yamoto. Njerwa za silicate zitha kugwiritsidwanso ntchito potengera zolemetsa potentha kwambiri komanso pamwamba pa ng'anjo ya asidi yotseguka.