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- Factors affecting the effect process of the spiral classifier？
Factors affecting the effect process of the spiral classifier？
Many factors affect the process effect of the spiral classifier, basically can be divided into the equipment structure factors, the nature of the ore factors And Operating conditions factors.
(1) The equipment structure factors
In terms of structure factors, the size of the tank classification area is the impact of the determinants of bmdling capacity and grading of grain size of the classifier: When the stability of the work surface, classification area should deal with the overflow volume is proportional to the amount of, and sub-inversely proportional to the level granularity. classification slot width depends on the diameter of the transported back to the sand screw. Bottom inclination necessary to return sand to improve height, and the limits of ore, however subdivision fell. The spiral of impact speed of agitation of the liquid level and transport back to the ability of the sand.
(2) The nature of the ore factors
Classification of ore properties on the main mineral density, and pull the composition and clay content in three aspects. Ore density is almost proportional to the impact of the grading machine capacity by weight; mainly reflecting the impact of clay content in the slurry viscosity, feed size. Mineral particles settling velocity decreases the viscosity increase, processing capability and the accuracy of the classification decreased, mud and fine grade ore classification, preferably at low concentrations, which helps to improve classification efficiency.
(3) operating conditions influencing factors
The main factors of the classifier in operation ore concentration. Concentration not only affects the classification of particle size, but also affects the granularity of processing capacity. A critical volume concentration, the precipitation amount reaches the maximum, called the critical concentration corresponds to the value of the weight concentration. classification machine processing capacity in the critical concentration. Critical concentration with the density of the ore and clay content varies, and the granularity of the provisions of the classification. Ore the higher the density, the higher the critical concentration. Clay content increased, the lower the critical concentration. With the reduction of classification granularity, the critical concentration decreases, it is to control the concentration of the ore classification machine to become an effective means to control the overflow particle size
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