Fiberglass spiral chute lined with polyurethane 1. It indicates that gravity separation is widely used in mineral processing of metal or non-ferrous metals due to its low environmental pollution and low 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、 The mortar with the same working principle is slowly fed to the surface of the spiral groove through the feeding groove installed at the end of the rotating groove head, and sorting is carried out. The tail end of the rotating groove is equipped with a valve block type product cutting groove, allowing the selected equipment to be divided into three types according to grade along the radial direction. By adjusting the position of the valve block to change the selection width of each product, the equipment gathering hopper will collect and export the obtained multi head ore flow. The transverse plane of the spiral chute and the different slopes of the curves are particularly suitable for the separation of small particles of mineral materials. Glass fiber reinforced plastic spiral chute lined with polyurethane III. The special spiral concentrator has attracted special attention among many gravity concentrators due to its low power consumption, simple structure, small floor area, simple operation, stable beneficiation, clear ore screening, no moving parts, convenient maintenance and management, large processing output per unit size and other characteristics. The equipment has a wide or flat groove surface, and the area where mineral mortar flows in a laminar flow is quite large, making it more suitable for processing medium to fine (-4MM) particle sized ores. We have made spiral chutes with diameters of 400, 600, 900, and 1200mm domestically, Ф The processing capacity of 1200mm four heads is about 4-6 tons per hour. FRP spiral chute lined with polyurethane 4. The chute can be divided into three types according to the particle size of ore processed: (1) Coarse grained chute. The maximum Granularity of ore feeding is more than 2-3MM, and the maximum can reach 100-200MM. (2) Sand ore chute, processing 2-3 mm particle grade ore material. (3) Slurry spiral chute, feeding particle size < 0.074mm. Glass fiber reinforced plastic spiral chute lined with polyurethane V. Use This equipment is used to separate iron ore, ferrotitanium ore, ferrochrome, ferrosulfide, zircon, Rutile, monazite, phosgenite, wolframite, sand tin, tantalum niobium ore, niobium and other non-ferrous metals, rare mineral metals and non-metallic minerals with density and specific gravity differences. FRP spiral chute lining polyurethane