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.

为了进一步弄清尾矿浓缩过程中的脱水性能和扭矩变化，将一台自制耙子连接到流变仪上，以监测剪切应力和扭矩。在240分钟内，总尾矿的脱水性能大大提高至固体质量分数为75.33％。脱水过程可分为三个阶段：快速扭矩增长期，阻尼扭矩增长期和恒定扭矩增稠区。发现机器重启对前转矩有很大的影响。可能导致耙阻塞。此外，分析了增稠尾矿的扭矩和固体质量分数的同时演变。建立了扭矩和固体质量分数之间的关系，该关系遵循幂函数。