subject: Effect And Wide Application Of The Classifier [print this page] The classifier is a kind of classifier for the purpose of mechanical grading operations, it works with the aid of the principle that solid grain size and different proportions result in different settling velocities of the solid particles in the liquid. More specifically, it means that making the finer ore grains flotate in the water then overflow out, while these coarser ones will sink down into the tank bottom and will be discharged pushed by the spiral to the upper. At present, the most commonly used classifier is the one that classifies and filters the grinding materials from the mill, utilizing the flight in the classifier to get crude materials into the mills inlet, and then discharging the screened fine materials from the overflow pipe.
Classifier can be divided into numerous types, taking the spiral classifier as an example, according to the spiral numbers, single-spiral classifier is equipped with one spiral, while with two spirals is called double-spiral classifier. Theres no difference in this classifying method on technical design. Furthermore, it can also be divided into low weir type, high weir type and immersed weir type in accordance with the depth degree that the spiral blade immersed into the overflow surface. Now the low weir type has been obsolete. Distinctive types of classifiers reflect different operating conditions, the high weir type classifier is principally used in relatively large granular (the overflow particle size is 0.83 to 0.15mm) ore classifying work. The immersed type classifier is used in relatively small granular (the overflow granularity is 0.15 to 0.70mm) ore classifying work.
The new type classifier stands out in the keen market competition by virtue of its reasonable and compact structure design and high-efficiency and lower consumption working efficiency, especially in the production line created with the help of the ball mill during concentrating process, it uses the gravity concentration to classify the ore sand and the fine silt. In addition, the grain size classification of the pulp in the metallic concentration process and the desliming as well as the mud-washing work in the ore-washing operation, all of these above are unable to proceed smoothly without the help of a classifier.
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