Coal gangue can be upgraded tile

After the coal is burned, it is often left behind with wastes such as coal gangue and fly ash, and some experts have made it into a light brick for the wall. A technology from China University of Geosciences (Wuhan) can transform it into more valuable ultrafine kaolin and high-grade porcelain tiles. Recently, the project entitled “Using Coal Industrial Waste to Prepare the Industrialization of Ultra-fine Kaolin and High-grade Porcelain Tiles”, which was submitted by Prof. Wang Yanxin and Dr. Yan Chunjie of the university, was funded by the National 863 Program's resource and environment technology field. .
Prof. Wang Yanxin said that in recent years, with the development of thermal power industry, coal gangue and fly ash have become the largest industrial wastes in China in terms of annual emissions and accumulative dumping. China has cumulatively dumped 3.4 billion tons of coal gangue annually. The discharged fly ash exceeded 100 million tons, ranking the third in the world. These wastes threaten the human living environment and affect the health of the human body. How to use coal gangue and fly ash for comprehensive utilization and turn waste into treasure is related to The department attaches great importance to it. Professor Wang Yanxin and Dr. Yan Chunjie have repeatedly studied and found that by using such techniques as intercalation, coal gangue can be made into superfine kaolin with paper coating, and fly ash phase composites can be used to develop new high-grade ceramic bricks. technology. This ingenious technology will enable China to no longer export a large amount of kaolin and rough processed goods at a low price, and then import high-quality kaolin.