Abstract: Gangue was gradually applied in the synthesis of flocculants,and the research focuses mainly concentrated in inorganic composite polymer flocculants in recent years.Preparation processes of gangue-based inorganic composite polymer flocculant and its applications in water treatment were introduced in detail,and the development prospect was described.It was pointed out that the development of the technology of gangue-based inorganic polymer flocculants had made a big progress,but there was still a gap from large-scale industrialization.Therefore it is quite urgent to accelerate the basic and applied researches on the high quality gangue-basic inorganic polymer flocculants and to improve the product quality as well as production process,thus to boost the development of related industries. 

Key words: gangue, inorganic polymer, flocculants