The slurry concentration mainly refers to the overflow concentration of the classifier. If the concentration of the slurry is too large, resulting in too high a sorting concentration, the quality of the concentrate will be seriously affected. Because the concentrate particles are easily covered by finer gangue particles and the package is not separated at this time, they are selected together to lower the grade. If the concentration of the slurry is too small, the concentration will be too low, and the flow rate will increase. The selection will shorten the pairing, so that some small magnetic particles that would have been available should fall into the tailings to increase the grade of the tailings and cause losses. Therefore, the pulp concentration should be adjusted as needed. The adjustment at the magnetic separator is mainly adjusted by the size of the blown water for the mine. However, the most important thing is that the graded overflow concentration must be completed according to the magnetic separation requirements. The maximum concentration of the feed slurry should not exceed 35%, and the control is generally about 30%. It should be determined according to the actual situation. AMERICA DIVISION OF TOP SHINE CO.,LTD. , https://www.ningbotopshine.com