Spiral classifier is widely used in closed loop with the ball mill dubbed mineral sands process of triage process, or the gravity concentrator grading ore and fine mud, and metal beneficiation process for pulp particle size grading, and washing mining operations in the mud, dehydration and other operations. The machine has a simple structure, reliable, easy to operate. Screw classifier spiral shaft through the motor, reducer, vice cylindrical gear and bevel gear drive, gear at the upper end of the device.
The classifiers also have a variety, often mentioned are spiral, as well as air-wheeled grading machines. Grader Principles and Applications of different types are different. This section describes the main spiral classifier, the device commonly used in various types of mineral production line, with the ball mill, vibrating screen and other equipment stage beneficiation process, it is also essential for the plant.
Spiral rotation, while stirring the pulp to make light fine particles float, while the carriage of heavy particles sink to the bottom of the upper. Hollow shaft usually made of seamless steel tubes, or after a long steel plate welded to form. Welding the ends of the hollow shaft journaled, supported within the upper end of the first rotatable cross shaft, supported on the lower end of the lower seat. Cross-axis spindle head is supported on both sides of the head mount gear rack, it can enable the screw shaft rotates, but also for the lifting.
Structure screw classifier, the semi-circular sink, welded steel plate and steel, have the inlet on the side wall of the central tank, the upper end of the lower part of the tank has a return sand mouth. The lower end of the bottom of the groove has a discharge valve, this valve is closed during normal operation, and in the special case of the failure to open the pulp discharged. Tank fitted with vertical hollow shaft, the shaft is equipped with a spiral manner to clamp angle guide plate frame adapted to support the above fixed spiral blades around their bodies use more double helix spiral pitch, etc., and equipped with resistance at the edges of the leaves mill liner.
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sand classifier: http://www.ore-processingplant.com/ore-beneficiation-equipment/spiral-classifier.html
