Mullite Refractory Bricks
Mullite bricks are a high alumina refractory material with mullite (3Al2O3-2SiO2) as the main crystalline phase. The general alumina content is between 65% болон 75%.
Mineral composition in addition to mullite, which contains low alumina also contains a small amount of glass phase and square quartz.
The higher alumina content also contains a small amount of corundum.
It is mainly used in hot blast furnace roofs, blast furnace body and bottom, glass kiln heat storage chamber, ceramic sintering kiln, dead-end furnace lining of petroleum cracking system, гэх мэт.
PER галд тэсвэртэй, as a professional галд тэсвэртэй тоосго (муллит тоосго) manufacturer in China, зах зээлээс хямд үнэ санал болгож чадна. Contact us now to get the latest price list of mullite refractory bricks.
More Mullite Bricks Types
Корунд муллит тоосго
Corundum mullite bricks are refractory products made of high purity or purer raw materials.
The presence of low melting point oxide impurities will reduce its high-temperature performance.
The main component of corundum mullite bricks is alumina.
The main raw material is high purity corundum and mullite, alumina refractory bricks composed of corundum and mullite main crystal phase.
It has good high-temperature strength, high temperature creeps resistance, дулааны цохилтын эсэргүүцэл, and erosion resistance.
Suitable for blast furnace ceramic cups, and blast furnace hot air outlet.
Lightweight Mullite Bricks
Light mullite brick is a high alumina refractory with mullite as the main crystalline phase.
The general alumina content is between 65% болон 75%.
Light mullite bricks are light in quality and good in heat preservation and are high-quality high purity refractory powders.
Lightweight mullite bricks are made of imported slab corundum and high purity electrofused corundum as the main raw materials, applying advanced ultra-micro powder adding technology, after mixing, хатаах, хэвлэх, and firing in a high-temperature shuttle kiln.
Mullite lightweight bricks are widely used in residue oil gasification furnaces, ammonia second stage conversion furnaces, carbon black reaction furnaces, refractory kilns, and other equipment.
Low Creep Mullite Bricks
It is made by adding other beneficial auxiliary minerals to the production process of ordinary high alumina bricks to improve the creep resistance.
With the development of large volume, high wind temperature, and long life of ironmaking blast furnaces, the proportion of low creep high alumina bricks for hot blast furnaces is increasing.
Low creep mullite brick This series of products are made of synthetic mullite as the main raw material and formed by high pressure. High-temperature firing, with high strength.
Volume stability under high-temperature conditions creeps rate is small and other advantages.
It is suitable for the supporting hot blast furnace of large and medium-sized blast furnaces.
Zirconium Mullite Brick
Zirconium mullite bricks are made of Al2O3, a part of smooth zirconium dioxide and zirconium corundum cement clinker as raw materials, which are mixed with rubber, хэлбэртэй, хатаасан, and fired at high temperature in a shuttle kiln.
The zirconium brick crafts have a high-density molecular structure, high volume relative density, and large capacity.
It has high impact toughness at room temperature and high temperature, good thermal shock reliability, and small stress relaxation at high temperature and refired.
Үүний зэрэгцээ, it has the characteristics of high organic chemical reliability and anti-corrosion of partial alkali substances.
Zirconium-containing bricks are key used in large and medium-sized laminated glass kiln melt pools, picture tube kiln, heat storage room partition wall bricks and its chemical plants, metallurgical industry industrial kilns corroded by aqueous solution location.
Mullite Bricks Specification
The refractories of mullite brick are high up to 1790 ℃ or more. Load softening start temperature 1600 ~ 1700 ℃. Normal temperature compressive strength 70~260MPa. мөн дулааны цохилтод сайн тэсвэртэй. There are two kinds of sintered mullite bricks and electrofused mullite bricks.
| Item/Index | Муллит тоосго | Resintering Fused Mullite Bricks | Mullite-Corundum Bricks | Corundum-Mullite Bricks |
| Al2O3 | ≥70% | ≥75% | ≥80% | ≥90% |
| SiO2 | ≤25% | ≤23% | ≤18% | ≤8% |
| Fe2O3 | ≤0.5% | ≤0.5% | ≤0.5% | ≤0.3% |
| Илэрхий нүхжилт | ≤17% | ≤14% | ≤19% | ≤18% |
| Их хэмжээний нягтралтай | ≥2.55g/cm | ≥2.65g/cm | ≥2.70g/cm | ≥2.90g/cm |
| Хүйтэн бутлах хүч | ≥90MPa | ≥100MPa | ≥80MPa | ≥100MPa |
| Initial Refractoriness Under Load | ≥1630℃ | ≥1700℃ | ≥1650℃ | ≥1700℃ |
Chemical Properties Of Mullite Refractory Bricks
1. Бага дулааны хайлмал, due to the low thermal conductivity, mullite series lightweight thermal insulation bricks accumulate little thermal energy and save energy significantly in intermittent operation.
2. Дулаан дамжуулалт бага, with very good thermal insulation and heat preservation effect.
3. Low impurity content with very low content of iron box alkali metal and other oxides, тиймээс, өндөр галд тэсвэртэй; high aluminum content makes it maintain good performance under reducing atmosphere.
4. Халуун төлөвт шахалтын өндөр бат бэх.
5. Can be processed into special shapes to reduce the number of bricklaying blocks and joints.
6. Нарийн харагдах байдал, хэмжээ, speed up the masonry, reduce the use of refractory clay, and ensure the strength and stability of the masonry, ингэснээр доторлогооны ашиглалтын хугацааг уртасгана.
Zhengzhou PRE Refractories Co., Ltd. produces and sells various types of refractory materials. If you require lightweight mullite bricks, welcome to consult. Our experienced technical staff will provide you with reasonable purchasing solutions. We are looking forward to cooperating with you.
PER Refractories компанийн тухай
PER refractories компани Шинми хотод байрладаг, Хэнань муж, Хятад дахь галд тэсвэртэй материалын өлгий нутаг. Манай компани нь технологид суурилсан галд тэсвэртэй үйлдвэр юм&Д, үйлдвэрлэл, борлуулалт, техникийн үйлчилгээ. Нутаг дэвсгэрийн баялаг нөөц, маш сайн чанар нь галд тэсвэртэй материал үйлдвэрлэх хосгүй дээд нөхцлийг бүрдүүлдэг.. Манай гол бүтээгдэхүүнүүд галд тэсвэртэй шавар тоосго, өндөр хөнгөн цагааны исэлд тэсвэртэй тоосго, галд тэсвэртэй цахиурт тоосго, магнийн галд тэсвэртэй тоосго, муллит тоосго, тусгаарлагч тоосго, болон бусад өндөр температурт тэсвэртэй бүтээгдэхүүн.
PER галд тэсвэртэй компани нь ногоон үйлдвэрлэлийн бааз юм, эрчим хүч хэмнэх, байгаль орчинд ээлтэй шинэ галд тэсвэртэй материал. Манай компани ISO9001 стандартыг давсан:2008 олон улсын чанарын системийн гэрчилгээ, GB/T24001-2004 / ISO14001:2004 байгаль орчны удирдлагын тогтолцооны гэрчилгээ, аж ахуйн нэгжийн чанарын хяналтын байгууллагын гэрчилгээ. Манай бүтээгдэхүүн илүү сайн борлуулагдаж байна 20 дэлхийн бүх улс орнууд. Эдгээр нь металлургийн хувьд илүүд үздэг галд тэсвэртэй бүтээгдэхүүн юм, өнгөт, нефть химийн, шил, керамик, болон бусад галд тэсвэртэй үйлдвэрүүд.
