Recently, customers in the UAE contacted our company, requesting refractory bricks for the transition zone of a cement rotary kiln. The customer’s previous refractory bricks had a short service life and were costly. They now need our recommendations for suitable refractory bricks for this purpose.
Through communication with the customer, our technical staff recommended magnesia-alumina bricks based on their specific needs.
The transition zone of a cement rotary kiln operates under complex conditions, with temperature fluctuations between 1400-1600℃. The kiln lining is unstable and must withstand material erosion, chemical corrosion, and frequent thermal stress impacts. Magnesia-alumina bricks are the optimal choice for this region. Our products use high-purity periclase and magnesia-alumina spinel as core raw materials, manufactured through high-pressure molding and ultra-high-temperature sintering. They are chromium-free and environmentally friendly, meeting the green building requirements of the Middle East.
The core advantages of magnesia-alumina bricks are their suitability for transition zone requirements. They have a load softening temperature ≥1700℃, enabling them to withstand high-temperature environments. Excellent thermal shock resistance, withstanding over 12 cycles under 1100℃ water cooling conditions, effectively withstanding drastic temperature fluctuations. Dense microstructure with an apparent porosity ≤16%, providing outstanding resistance to cement clinker and alkali-sulfur compound erosion. High strength and wear resistance also reduce kiln downtime losses due to kiln lining spalling.
Magnesia-alumina bricks can be customized according to customer rotary kiln specifications (2500-7500t/d), with a service life exceeding 12 months, significantly reducing operation and maintenance costs. We communicate with customers to support rapid delivery of bulk orders. On-site installation guidance is also available, ensuring product compatibility and effectiveness throughout the process, contributing to the efficient and stable operation of customers’ cement production lines. The customers gave us high praise and indicated they will visit our factory next month. Ruitai looks forward to their visit.
