Utility model patent for a flexural and compressive resistant refractory brick: structural innovation enhances the reliability of furnace linings

On December 30, 2025, the China National Intellectual Property Administration officially granted Zhengzhou Huawei Refractory Materials Co., Ltd. a utility model patent titled "A Refractory Brick with Flexural and Compressive Strength" (Grant Publication No. CN223741241U); the application for this patent was filed on October 22, 2024.

I. Structural Innovation: Enhancing Flexural and Compressive Strength in Refractory Bricks

This patent was jointly developed by a team from Zhengzhou Huawei, including Zheng Kaifeng, Wang Xinchao, Li Hongliang, Guo Jifeng, Huang Xin, Yao Feng, Wei Yahui, Zhao Xiaoke, Li Liping, and Li Qian. According to the patent abstract, the refractory brick achieves significantly enhanced overall strength through built-in reinforcing ribs and simplifies the assembly of the thermal-insulating carbon fiber board layer via an innovative interlocking design. Furthermore, the interconnection of interlocking blocks, slots, and reinforcing ribs ensures a tight, secure fit between bricks during stacking, resulting in a refractory structure that is exceptionally stable, reliable, and resistant to both compression and bending.

In high-temperature industrial kilns, refractory bricks must withstand the combined challenges of thermal stress, mechanical loads, and material erosion. Conventional refractory bricks are prone to issues such as cracking and spalling during prolonged use, which compromise the integrity and service life of the kiln lining. Through structural optimization—and without altering the material composition—this patented technology enhances the bricks' flexural strength and compressive capacity, offering a new technical solution for the long-term, stable operation of kiln linings.

II. Continuous Accumulation of Technical Innovations

This patent grant marks another achievement for Zhengzhou Huawei in the field of structural innovation for refractory materials. To date, the company holds a total of 71 patents, including 8 invention patents and 44 utility model patents. The company's technical R&D center has been designated as a provincial-level enterprise technology center; in 2023, the Xinmi Branch of the Refractory Materials Innovation Center was established based on this facility.

Zhengzhou Huawei will continue to increase investment in research and development, driving innovation focused on enhancing the performance, extending the service life, and improving the environmental sustainability of refractory materials, thereby providing global high-temperature industry customers with more reliable and durable refractory products.