Current Status and Prospect of Fly Ash Utilization in China

摘要

About 500 million tons (Mt) fly ash produces from coal-fired power stations every year in China, which causes severe economic and environmental problems. In this paper, current status and prospect of fly ash utilization in China was introduced in detail. China is a huge country which has many different geographical environments and various level of economic development. So, the level and method of different area are various. In general, fly ash is mainly used as an additive in concrete and cement in the south of China and thereof little fly ash is piled up, while in the north of China, it can be used as the alumina production material besides the utilization ways mentioned above. As a prospect, high-valued utilization of fly ash is being undertaken, such as producing inorganic fiber or geopolymer.