Spiral classifier, which is aslo known as screw classifier, is a type of classifying machine that 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.

The Working Principle of Spiral classifier is as follows:

The screw classifier is relying on the different sizes, various specific gravity in order to reach the different theory of settling velocity in the liquid, which can cause the fine mineral particles floating in the water into over flow, and the coarse ore particles sinking into the bottom. It is one classifying machine to be major in mechanical grading by screwing into the upper discharge of the raw material, which also can grind the material into one powder level in the filter, and then the coarse material can be screwed into the rotary vane by using a spiral piece. To filter out the fine material is the final process of the whole production line, which is discharged from the over flow tube. The base of the machine is made up of channel steel body made of welded steel plate. The main features of this machine is that the head is taking spiral shaft and the main part pieces of it is mainly using wear resistant and durable material, and there are two type of the listing devices including device electric and manual.

Spiral separator, also called spiral concentrator, sprial classifier or screw classifier, is a kind of classifying machine that 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.

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