The large-capacity coal drying plant produced by Jiutian company for Shanxi Youyu customers has been successfully commissioned and put into production. According to market demand, the Jiutian coal slime drying plant adopts a new heat source that uses clean fuel with sufficient heating and cleanliness. At the same time, it uses a multi-stage dust removal device with high-efficiency dust removal. This project embodies the two advantages of Jiutian equipment environmental protection and energy-saving.