A Spiral Classifier is a machine that is primarily used to classify the slimes from a coarser, sandy sized material. It has an inclined trough with one or two spirals revolving slowly and free from touching the sides or bottom of the tank. The motion of the spiral creates Pool Hindered Settling in the bottom pool area, where the ...
Rake Classifier. The Rake Classifier is designed for either open or closed circuit operation. It is made in two types, type C for light duty and type D for heavy duty. The mechanism and tank of both units are of sturdiest construction to meet the need for 24 hour a day service. Both type C and type D Rake Classifiers ...
2) Low spiral classifier. The overflow of the low type spiral classifier is usually lower than the center of the bearing at the overflow end. Therefore, the settlement area is too small and the overflow production capacity is too low, and the screw agitation on the pulp surface is too large.
Because users needs vary so greatly, the Classifier is available in a wide range of spiral diameters and pitches, tank shapes and lengths allowing exact compliance with each users classification requirements. Spiral diameters : Important in establishing a correct balance between overflow and raking capacity.
According to the height of overflow , spiral classifier can be divided into high spiral classifier, low spiral classifier and submerged spiral classifier.
See full list on miningpedia
According to the number of screw shift, the spiral classifier can be divided into single spiral classifier and double spiral classifier. The classifying performance of the them is basically same,but the double spiral classifier is much better than the single spiral classifier at the return sand treatment capacity, overflow treatment capacity, screw diameter. Besides, the price of double spiral classifier is far higher than the single spiral classifier, which is more suitable for working with largegrinding mill. Mineral processing experts suggest that the single spiral classifier should be selected as far as possible under the determined processing capacity. According to statistics, the working load of the double spiral classifier is 0.6 0.75 times than that of the single spiral classifier, and the efficiency is relatively low. Therefore, the appropriate screw speed and number must be determined according to the processing capacity.
All types of classifiers mentioned above have their own advantages and have different effects on the classifier. According to the current different classifying requirements, different types of classifier have been optimized to achieve a good classifying effect. The mineral processing plant must clearly grasp the characteristics and working principle of each type of classifier, select it by considering the ideal process flow and production demand. Last: What Are The 8 Factors That Affect Crusher Machine Productivity Next: 5 Factors That Affects the Jigging Process
Spiral can be of single pitch or double pitch. Single pitch spirals consist of one continuous spiral ribbon. The double pitch spiral has twice the raking capacity of a single pitch assembly and consists of two duplicate spiral ribbons. Rake classifier is a mechanical classifier consists of a rectangular tank with a sloping/inclined bottom.