The CLM series of classifier mills is a combination of two stages of closed-circuit grinding and air classification in one unit. Materials that are difficult to grind and those that require a finer grind and/or a narrower particle distribution curve than is practical to produce in a fine grinder often require the capabilities of the CLM classifier mill. Large particles not completely ground in the first stage of this grinder are rejected by the built-in classifier and sent to a separate part of the grinding rotor designed to handle these more difficult items. They are reground and then reclassified.
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