The raw material of mullite castable is high quality porous mullite aggregate. Then, we add fine powder and additives to stir it into refractory castable. In addition, the critical particle size of mullite aggregate is 12mm. The long-term use temperature of mullite castable is 1350℃(2462℉).
| Item/Grade | KRMJ-55 | KRMJ-60 | KRMJ-65 | KRMJ-70 |
|---|---|---|---|---|
| ω (Al2O3) ≥/% | 55 | 60 | 65 | 70 |
| Bulk Density ≥/ (g/cm³) | 2.3 | 2.4 | 2.5 | 2.6 |
| Flexural Strength ≥/MPa | 7 | 7 | 8 | 9 |
| Compressive Strength ≥/MPa | 40 | 50 | 60 | 70 |
| Permanent Linear Change ≤/% | ±0.5 | ±0.5 | ±0.5 | ±0.5 |
Tips: this table is formulated concerning Chinese refractory industry standards. Contact us or follow us on Pinterest for more information.
Mullite castables have high use temperatures and can be used as working linings in direct contact with flames. This can achieve high-temperature energy conservation. Moreover, its unit density is light, which can reduce the structural weight of the kiln by 40% – 60%. This eliminates the hidden danger of broken hard fire brick hanging on the furnace roof. In addition, customers can use Kerui mullite castables to quickly dry the furnace and shorten the drying period. Its economic benefits are very significant.
Due to the long service life and low maintenance cost of mullite refractory castables, its comprehensive cost performance is better than traditional refractory materials.
Mullite refractory castables have high thermal stability. Therefore, it can effectively improve the thermal efficiency of industrial kilns and reduce energy consumption.
Mullite refractory castables are suitable for various high-temperature industrial kilns. Especially in the temperature range below 1400℃(2552℉), it has a good use effect.
Kerui’s mullite refractory castables use composite binders. This avoids harmful impurities in calcium alumina cement and is beneficial to environmental protection.
In general, mullite castables are mainly used in the field of refractory materials. In addition to making it into precast blocks, it plays an important protective role in various high-temperature, high-pressure and corrosive environments. We usually use it for the following purposes:
Through continuous R&D investment and technological accumulation, Kerui’s mullite castables are in the leading position in the industry in terms of performance and quality. Kerui’s R&D team has been launching new products that meet market demand. So, we meet the needs of customers in different fields.
Kerui Group also strictly implements the ISO9001 quality management system standards and has established a complete quality management system. Moreover, from raw material procurement to product delivery, every link is strictly controlled to ensure stable and reliable castables and dry ramming mass quality.
Our company has an efficient sales team and technical service team. That is to say, we are able to respond to customer needs in a timely manner and provide customers with personalized solutions. In addition, Kerui pays attention to customer needs and always adheres to the concept of customer first.
As the castables and fireproof cement suppliers, Kerui Group will continue to uphold the purpose of “quality first, customer first”. Kerui has excellent quality, technological innovation and high-quality service. Therefore, we will continue to be a leading enterprise in the high-temperature industry.
Kerui can provide mullite castable specifications, categories and competitive prices. From raw material procurement to final product inspection and after-sales service, we ensure that the refractory products provided to customers are 100% qualified. Moreover, we can also customize castables and other refractory products according to customer requirements. Welcome to email us for free quotes and price lists.