Study on the Desliming Performance of a Novel Hydrocyclone Sand Washer

A novel hydrocyclone sand washer featured by connecting a cylindrical and conical-cylindric in series was developed to improve the poor grading performance current machine-made processing technology. The former hydroycyclone with flat bottom designed enhance centrifugal intensity, thereby achieving pre-grading of fine coarse particles ensuring discharge most mud from overflow pipe. latter achieve secondary separation therefore reduce content underflow product. Firstly, flow field inside consecutive hydrocyclones simulated using an RSM VOF model. DPM model introduced trace particle motion trajectory validate feasibility separation. Then, experimental study performed control variable method, effects first-section pipe diameter, feeding rate, mud–sand mixing ratio on desliming were examined. Results show that diameter below 75 μm second-section drops significantly after washer. When are set 34 mm, 60 kg/h 1:1, respectively, rate can reach 94.31% loss quartz is only 1.28%.