Batu Bata Mullite Cor Terpadu
Batu Bata Mullite Cor Terpadu 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, suhu pelunakan beban tinggi, ketahanan kejut termal yang baik, high mechanical strength at room temperature and high temperature, good abrasion resistance, konduktivitas termal yang baik, and strong resistance to slag corrosion, dll.. The bricks are widely used in metallurgical heating furnaces, bahkan tungku panas, calcium carbide furnaces, and calcium carbide furnaces. Electrofused mullite is widely used in metallurgical heating furnaces, bahkan tungku panas, outlet tungku kalsium karbida, dinding tungku kaca, dan seterusnya.
PER Refractories produces standard refractory bricks and customized-shaped refractory bricks. Kualitas tinggi dan harga murah adalah keunggulan kami. 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 |
| Kekuatan Penghancuran Dingin | 350 Ayah |
| Thermal Expansion at 1150℃ | 0.80% |
| Thermal Conductivity at 500-1500℃ | 4.6W/m.K |
| Porositas | 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 ke 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 batu bata korundum mullite dan lainnya 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.
Tentang PER Perusahaan Refraktori
Perusahaan Refraktori PER terletak di Kota Xinmi, Provinsi Henan, kampung halaman bahan tahan api di Cina. Perusahaan kami adalah perusahaan tahan api berbasis teknologi yang mengintegrasikan R&D, produksi, penjualan, dan layanan teknis. Sumber daya yang kaya dan kualitas yang sangat baik di wilayah ini memberikan kondisi unggul yang tak tertandingi untuk produksi bahan tahan api. Produk utama kami adalah batu bata tanah liat tahan api, batu bata tahan api alumina tinggi, bata silika tahan api, batu bata tahan api magnesium, batu bata mullite, batu bata isolasi, dan produk tahan suhu tinggi lainnya.
PER menganggap hal yang paling penting, kami percaya dalam menanggapi setiap produk dengan serius dan menerima setiap pelanggan dengan tulus. Untuk memberikan hasil yang cepat dan berkualitas tinggi bagi semua pelanggan kami. PER Refraktori akan menjadi produsen refraktori paling tepercaya dan mitra terpercaya Anda.
Perusahaan PER refraktori adalah basis produksi hijau, hemat energi, dan bahan tahan api baru yang ramah lingkungan. Perusahaan kami telah lulus ISO9001:2008 sertifikasi sistem mutu internasional dan GB/T24001-2004 / ISO14001:2004 sertifikasi sistem manajemen lingkungan, sertifikasi lembaga inspeksi kualitas perusahaan. Produk kami terjual dengan baik di lebih dari 20 negara di seluruh dunia. Mereka adalah produk refraktori pilihan untuk metalurgi, bukan besi, petrokimia, kaca, keramik, dan industri tahan api lainnya.
