Out of demand on developing market for high-quality mullite molding sand products, the tests on calcination of Huaibei coal-series hard kaolinite rock are done based on the process mineralogy study.

• 我国煤系硬质高岭岩资源丰富,出于开发高档精密铸造用莫来石型砂产品市场的需要,在工艺矿物学研究的基础上进行了淮北煤系硬质高岭岩煅烧试验研究。