Experimental study of briquette and formed coke preparation using activating sludge as binder
LI Jian
YAN Long
KANG Yuhong
WANG Aimin
XIANG Yuan
WANG Chao
Abstract：In order to achieve comprehensive utilization of pulverized coal,municipal sludge was chosen as a base component of binder,and chemical activation was used.The influence of forming pressure,sludge content and drying time on cold press strength and wet compressing strength was studied.The optimum process conditions were determined.The results showed that the cold press strength,dropping strength of briquette was 1 522.5 N,97.7％ respectively,when the sludge content was 12％,forming pressure was 12 MPa,drying time was 8 h.Under the optimal condition,briquette was calcinated in 600 ℃,then properties of formed coke was tested which met the requirements of The Standard of Shaanxi Local Clean Briquette Technology,such as ash,strength content,volatile,calorific value.The clean briquette bonded by modified activated sludge was suitable for industrial production.
Keywords：sludgebinderfine-coal briquettingbriquette
Publication Date：2017-01-01