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The relationship between the pitch of spiral chutes and the particle size of ore feeding indicates that gravity separation is widely used in mineral processing of metal or non-ferrous metal ores due to its low environmental pollution and cost. Spiral chute is one of the gravity beneficiation machinery, with a structural characteristic of a cubic parabolic shape on the cross-section, suitable for handling finer particle sizes of -0.2mm. During the beneficiation process, do not add water for flushing, and divide the end of the chute into sections to obtain fine, medium, and tailings. 2、 Production principle: The spiral concentrator is freely placed on the cross (or tripod) of the support table. The evenly proportioned mortar is slowly fed onto the surface of the spiral groove through the feeding chute installed at the head of the rotating groove, and sorting is carried out. The tail end is equipped with a valve block type equipment cutting groove, which divides the sorted products into three (or four) categories according to grade along the radial direction. Change the acquisition width of each product by adjusting the position of the valve block. The equipment gathering bucket is a concentric circular tube that allows the selected variable ore flows to converge and export differently. The cross section and slope of the curve of the fiberglass chute are very suitable for the separation of small particle materials. The relationship between the pitch of the spiral chute and the feeding particle size 3. Features 1. Stable sorting process, easy operation 2. Wide range of feeding density allowed 3. High enrichment ratio, high recycling rate, 4. Small land occupation and water consumption 5. Simple structure, no need for power 6. Large processing output 7. Easy installation and easy operation 8. Low investment and quick results The relationship between the pitch of the spiral chute and the feeding particle size 4 Classification According to the particle size of the processed mineral aggregate, the chute can be divided into three types: (1) coarse chute, the maximum Granularity of ore feeding is more than 2-3 mm, and the maximum can be 100-200 mm. (2) The ore chute handles 2-3 millimeter sized ores. (3) Slurry spiral chute, feeding particle size ＜ 0.074mm. The relationship between the screw pitch of spiral chute and the ore feeding particle size V. The application scope of this product is to separate iron, ferrotitanium, ferrochrome, ferrosulfide, zircon, Rutile, monazite, phosgenite, wolframite, shatin ore, tantalite, niobium ore and other non-ferrous metal ores, rare ore metals and non-metallic minerals with specific gravity differences. The Relationship between the Pitch of the Spiral Chute and the Feed Particle Size