Classifiers are mainly divided into spiral classifiers and hydrocyclones, which are widely used in concentration plants. They are often paired with ball mills to form a closed circulation process for classifying ore sand. They are also used for classifying ore sand and fine silt in gravity mills, conducting size grading for pulp during metal separation, and desliming and dehydrating during mine separation. These classifiers possess the advantages of simple structure, reliable operation, and easy use.
The spiral classifier can be classified into two types based on the number of screw shafts: single screw and double screw. It can also be categorized as high weir, low weir, or immersed-type based on the height of the overflow weir.
The high weir type is suitable for coarse grain classification and can achieve granularity over 100 mesh. It has a depressed area for efficient classification.
The low weir type has a small desliming area and low overflow capability. It is commonly used for washing sand and desliming purposes.
The immersed-type spiral classifier is suitable for fine granule classification and can achieve overflow granularity less than 100 screens. It is designed with a large depressed area and depth.
The hydrocyclone is a equipment used for classifying ore pulp based on centrifugal force. It has no moving or dynamic parts and needs to be paired with a corresponding slurry pump. It is primarily used in the ore dressing industry for classification, dewatering, and desliming.
The HPGR significantly enhances the capacity of the crushing system while reducing the consumption of electric power and steel balls in the ball mill.
Featuring a highly wear-resistant roller surface, excellent crushing ratio, increased availability, cost and investment savings, and flexible configuration, the HPGR is capable of processing various ores ranging from 50t/h to 2000t/h.
It offers several advantages, including a robust structure, a roller surface with high wear resistance, and high efficiency with energy-saving capabilities.
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