Preparation of environmentally friendly and energy-saving autoclaved aerated concrete using gold tailings

Abstract

Gold tailings (GTS) are solid wastes from gold mining operations by mining enterprises. At present, China's GTS are basically in a state of tailings storage. According to statistics, from 2014 to 2018, the national GTS emissions reached 920 million tons, which brought serious environmental and safety problems to the mining area. Therefore, it has become a top priority to conduct secondary development and utilization of resources for the GTS Due to its high silicon content, the GTS can be used as the admixtures to prepare autoclaved aerated concrete (AAC). This can effectively absorb a large amount of GTS, which makes it one of the key projects of the 12th Five-Year Plan for comprehensive utilization of bulk industrial solid wastes