When the classifier works, the size and specific gravity of the solid particles are different, and the principle of the settlement speed of the solid particles in the liquid is different. Specifically, the finer ore particles float in the water and overflow, and the coarser ore particles sink. At the bottom of the tank, it is pushed through the screw and discharged to the top to perform a mechanical grading operation. The grading equipment that is commonly used now is to grade and filter the material milled out of the mill. The screw material in the classifier is used to screw the raw material into the feed inlet of the mill, and then the filtered fine material is discharged from the overflow pipe. .
The classifier is divided into a plurality of types, and a spiral classifier is taken as an example. According to the number of spirals, a single screw classifier is equipped with a single screw, and a double screw classifier is a double screw classifier. There is no difference in the technical design of this classification method. In addition, according to the different depths of the spiral blade immersed in the overflow surface, the classification of the low rake type grading machine, the sorghum type grading machine and the sinking grading machine appeared, among which the low rake type grading machine should be eliminated. Different types of classifiers reflect the operating conditions of different model graders during operation. The high grade classifiers are mainly used for the classification of ore with large particle size (overflow size of 0.83-0.15mm). Submersible grading machines are used for the grading of ores with smaller particle size (overflow particle size of 0.15-0.07mm).
The new classifier is designed with a reasonable and compact structure, and the high efficiency and low consumption work efficiency stand out in the fierce market competition. Especially in the beneficiation process, a ball mill is used in the production line to use the gravity ore dressing principle to classify the ore and fine mud, as well as to classify the size of the pulp in the metal beneficiation process and to remove the mud during the washing operation. Dehydration and other operations, the smooth progress of these operations can not be separated from the work of the classifier.