The Malaysian sludge dryer project undertaken by Zhengzhou Jiutian has been installed and debugged. After trial operation, all parameters met expectations and it has been officially put into production. Jiutian sludge dryer is specially developed and designed for sludge, a type of material that has the characteristics of high moisture, high viscosity, high water holding capacity and low calorific value. The simplified internal structure of the dryer is specially designed, not only It improves the thermal efficiency and effectively avoids the sticking and over-drying of sludge in the dryer.