What Are the Technologies and New Processes for Producing Kaolin from Coal Gangue?
Kaolin is a type of non-metallic mineral, mainly composed of kaolinite clay minerals, with the chemical formula Al₂O₃·2SiO₂·2H₂O. According to geological origin, kaolin can be divided into primary kaolin and secondary kaolin. Based on industrial applications, it can be categorized as hard kaolin and soft kaolin. Among them, coal-series kaolin is a typical hard kaolin […]