Erimiş Dökme Mullit Tuğlalar
Erimiş Dökme Mullit Tuğlalar are made of high-quality mullite clinker as raw material, which is melted and cast at high temperatures in an electric arc furnace.
The refractory fire bricks are characterized by dense crystal structure, yüksek yük yumuşatma sıcaklığı, iyi termal şok direnci, high mechanical strength at room temperature and high temperature, good abrasion resistance, iyi termal iletkenlik, and strong resistance to slag corrosion, vesaire. The bricks are widely used in metallurgical heating furnaces, hatta ısı fırınları, calcium carbide furnaces, and calcium carbide furnaces. Electrofused mullite is widely used in metallurgical heating furnaces, hatta ısı fırınları, kalsiyum karbür fırın çıkışları, cam fırın duvarları, ve benzeri.
PER Refractories produces standard refractory bricks and customized-shaped refractory bricks. Yüksek kalite ve ucuz fiyat bizim avantajımızdır. You can contact us for a free quote in time.
Fused Cast Mullite Bricks Typical Physical Properies
| Al2O3 max (%) | 70-75 |
| SiO2 min (%) | 19-21 |
| Fe2O3 max (%) | 0.9-1.9 |
| Na2O max (%)a | 1.0-1.2 |
| True Specific Gravity | 3.54 g/cm |
| Soğuk Kırma Dayanımı | 350 Mpa |
| Thermal Expansion at 1150℃ | 0.80% |
| Thermal Conductivity at 500-1500℃ | 4.6W/m.K |
| Gözeneklilik | 8% |
Composition of Fused Cast Mullite Bricks
Fused mullite generally includes high purity fused mullite and ordinary fused mullite. Compared with sintered fused mullite, fused mullite has coarse crystals of 1000 ile 2000. high-purity fused mullite is light gray, and ordinary fused mullite is dark gray (bauxite is the main raw material).
PER refractories factory can customize high purity fused mullite and ordinary fused mullite according to customers’ requirements. We also produce korindon mullit tuğlaları ve diğeri types of refractory bricks.
Fused Cast Mullite Bricks are made of high alumina isotopes, composed of different alumina (3AL203.2Si02 mass fraction of AL2O372% and Si0228%). It is melted at about 2300°C and cast in a sand mold at 1850°C, then annealed to relieve stress.
The main crystalline phase is mullite and corundum, and the glass phase is filled between the crystalline phases. It is more resistant to glass liquid erosion than sintered refractories, but not as good as other electrofused refractories.
Adding a small amount of dioxygen (7%-8.5%) can make mullite crystals smaller, brick organization dense, mullite amount increased to 60%-70%, relatively reduce the glass phase content, reduce product cracks. Fused Cast Mullite Bricks have a low coefficient of thermal expansion, good resistance to thermal vibration, and strong resistance to glass liquid erosion.
Above 1450 ℃, mullite brick should not contact with alkali substances, otherwise it will make mullite decomposition. Mullite will also decompose in the reducing atmosphere above 1370℃, and part of Si02 becomes gaseous SiO to leave the brick body.
When the temperature is higher than 1650°C, even if the atmosphere is not restored, the mullite will decompose at a lower partial pressure of oxygen.
Fused Cast Mullite Bricks are made from high alumina isotopes, and different alumina is formulated to form the composition of mullite (3AL203-2Si02 mass fraction is: AL2O3 72%, Si02 28%). It is melted at about 2300°C, poured into the sand mold at thousand 1850°C, and then annealed to eliminate stress.
The main crystalline phase is mullite and corundum, the glass phase is filled in between the crystalline phase. Its resistance to glass liquid erosion is stronger than sintered refractories, but not as strong as other electrofusion refractories.
Add a small amount (7%-8.5%) of enamel dioxide, which can make the mullite crystals become a smaller, dense brick organization, the amount of mullite increased to 60%-70%, relatively reducing the content of the glass phase, and reduce the cracks of the products.
PER Refrakter Firması Hakkında
PER Refrakter Şirketi Xinmi şehrinde bulunuyor, Henan Eyaleti, Çin'deki refrakter malzemelerin memleketi. Şirketimiz R'yi entegre eden teknoloji tabanlı bir refrakter kuruluştur.&D, üretme, satış, ve teknik servis. Bölgedeki zengin kaynaklar ve mükemmel kalite, refrakter malzemelerin üretimi için benzersiz üstün koşullar sağlamaktadır.. Başlıca ürünlerimiz refrakter kil tuğlalardır., yüksek alümina refrakter tuğlalar, refrakter silika tuğlaları, magnezyum refrakter tuğlalar, müllit tuğlalar, yalıtım tuğlaları, ve diğer yüksek sıcaklığa dayanıklı ürünler.
PER en önemli şeyi düşünüyor, Her ürünü ciddiye almaya ve her müşteriyi içtenlikle karşılamaya inanıyoruz. Tüm müşterilerimize hızlı ve kaliteli sonuçlar sunmak. PER Refrakter, en güvenilir refrakter üreticiniz ve güvenilir ortağınız olacak.
PER refrakter şirketi yeşilin üretim üssüdür, enerji tasarrufu, ve çevre dostu yeni refrakter malzemeler. Firmamız ISO9001'i geçti:2008 uluslararası kalite sistem sertifikası ve GB/T24001-2004 / ISO14001:2004 çevre yönetim sistemi belgelendirmesi, kurumsal kalite kontrol ajansı sertifikası. Ürünlerimiz birden fazla ülkede iyi satılmaktadır 20 dünyanın her yerindeki ülkeler. Metalurjide tercih edilen refrakter ürünlerdir, demir dışı, petrokimya, bardak, seramik, ve diğer refrakter endüstrileri.
