Reconstructed rheometer for direct monitoring of dewatering performance and torque in tailings thickening process  

作　　者：Yong Wang Ai-xiang Wu Zhu-en Ruan Zhi-hui Wang Zong-su Wei Gang-feng Yang Yi-ming Wang 

机构地区：[1]School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China [3]Section for Biological and Chemical Engineering,Department of Engineering,Aarhus University,Hangøvej 2,DK-8200,Aarhus N,Denmark

出　　处：《International Journal of Minerals,Metallurgy and Materials》2020年第11期1430-1437,共8页矿物冶金与材料学报（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.51804015 and 51834001);the Fundamental Research Funds for the Central Universities(No.FRF-TP-17-024A1).

摘　　要：To further clarify the dewatering performance and torque evolution during the tailings thickening process,a self-made rake was connected to a rheometer to monitor the shear stress and torque.The dewatering performance of the total tailings was greatly improved to a solid mass fraction of 75.33%in 240 min.The dewatering process could be divided into three stages:the rapid torque growth period,damping torque growth period,and constant torque thickening zone.The machine restart was found to have a significant effect on the rake torque;it could result in rake blockage.Furthermore,the simultaneous evolution of the torque and solid mass fraction of thickened tailings was analyzed.A relationship between the torque and the solid mass fraction was established,which followed a power function.Both the experimental and theoretical results provide a reference for the deep cone thickener design and operation to enhance the dewatering performance.

关 键 词：TAILINGS DEWATERING RAKE reconstructed rheometer torque monitoring 

分 类 号：TD926.4[矿业工程—选矿]