The purpose of grading and the grading equipment commonly used in the concentrator?
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January 24 02:08:09, 2024
When the ore is ground, it is necessary to promptly separate the ore particles that have met the fineness requirements. This not only improves the processing capacity of the mill, but also avoids over-grinding. However, it is very difficult to carry out particle size classification in the mill. This task is accomplished by a classifier. The wet grading mainly utilizes the difference of the sedimentation speed of the ore particles in the water, and separates the ore particles of different particle sizes and different densities, and the qualified grit is sent from the classifier to the sorting operation. The coarse fraction is regrind as a grit backing mill of the classifier. It can be seen that grading plays an important role in grinding.
The mechanical classifiers that form closed circuits with the grinding machine include a jaw classifier, a float classifier, a spiral classifier and a hydrocyclone. A spiral classifier or a hydrocyclone is widely used at present. In recent years, many factories have adopted a fine screen with high classification efficiency and a grinding machine to form a closed circuit.