What is Spiral Classifier?

Spiral classifier, also called screw classifier, is a type of classifying machine widely used in ore dressing process.


Spiral classifier separate minerals of different specific gravity according to their relative movement in response to gravity, centrifugal force and other forces in the fluid medium. It classifies materials based the principle that the solid particles with different sizes and proportions have different falling speed in the liquid, and fine ore particles float in the water and coarse ore particles sink to the bottom of the chute and the coarse ore particles are pushed by the spiral to the upper part and discharged. This machine is able to filter the powdery particle crushed by the grinding mill and whirl the coarse particles with the spiral to the feeding mouth of the grinding mill and discharge the filtered fine particles. The pedestal of this machine is made of U-steel, and the rack is welded with steel plate. The water feeding head and spindle nose of the spiral shaft are made of cast iron with wear-resisting and durable property and the lifting device is divided into power-operated type and manual-operated type.


It is a key point in the ore dressing process to select a good classifying equipment. The spiral classifier can be divided into single spiral classifier and double spiral classifier according to the spiral axle quantity. It can also be divided into high weir type, low weir type, and sinking type according to the overflow weir height.


Henan Bailing Machinery Co., Ltd can provide various high quality spiral classifiers for vast customers, if you have any interest in them, please call us: 86-0371-67996061.