Spiral classifier is one of the beneficiation equipments. According to the different proportion of solid particles, the rate of precipitation in the liquid is also different. Spiral classifier concentrates fine ore based on the principle. After grinding, the materials will pass through filter, through which the coarse materials will return to ball mill and the fine ore will be discharged from the overflow pipe. Spiral classifier, also called screw classifier, is widely used for distributing in the close circuit ball mill with ore, grading ore and fine slit in the gravity mill, grading coexistence in the flow of metal ore-dressing and de-sliming and dehydrating in the washing. When spiral classifier minerals processing, it works based on the theory that different solid particles have different gravity and thus have different dropping speed.
Fine particles floating in the water will overflow and the big ones will sink to the bottom and discharge from the upper part by pushing spiral. The base of the machine adopts to channel steel and the body adopts welded steel plate. The water inlet and head of spiral axle adopt the steel cover for wear Proofing and long-term operation. In the iron ore beneficiationprocess, classification and screening are important stages to separate the impurity materials and gangues from pure iron ore. Iron ore wet classification is processed by solid and liquid separator, separating the solid particles in a mixture of solids and liquids into fractions according to particle size or density by spiral classifier instead of screening. The classifying operation is carried out in a pool of fluid pulp confined in a tank arranged to allow the coarse solids to settle out, then they are removed by mechanical means. Hongxing is specialized in providing various types of spiral classifier, industry spiral classifier, electric classifier etc.
Hongxing spiral classifier design is excellent for iron ore beneficiation process, it greatly improve the iron ore separation efficiency. The structure of the spiral classifier, semi-circular sink, steel plate and steel welded into the feed inlet in the middle of the tank sidewall, the lower part of the tank top of the return sand mouth. The bottom of the tank bottom of the release valve, this valve is closed during normal working hours in the open release of the special circumstances of the failure and other pulp. Tank equipped with a longitudinal axis of the hollow shaft to clamp equipped with a support plate frame compatible with the spiral lead angle, the above fixed around the spiral blades, the screw mechanism of multi-pitch helix using the double-headed, and equipped with a resistance to the leaf edge mill liner.