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The principle of spiral chute for coal washing equipment is introduced. The chute separation of minerals belongs to the inclined flow separation process. The mortar is provided with some inclined grooves or inclined surfaces. Under the push of water flow, the mineral particles are loose and layered, and the lighter minerals in the upper layer quickly discharge out of the groove. The heavy minerals in the lower layer are retained inside the groove or discharged slowly from the lower part. After being collected separately, the concentrate and tailings can be obtained. The fiberglass spiral chute is a machine for mining and beneficiation, especially ideal for mining sand in bays, river beds, sandbanks, and streams. The equipment has reasonable structure, simple installation, small footprint, easy operation, stable beneficiation, clear mineral separation, large processing capacity, high efficiency, high beneficiation enrichment ratio, high recovery probability, and reliable operation. There are also advantages such as light weight, moisture resistance, rust prevention, corrosion resistance, and strong applicability to fluctuations in ore feed volume, concentration, particle size, and grade. 2、 The mineral mortar with the same working principle is slowly fed onto the rotating groove surface through the feeding chute installed at the head of the spiral groove for sorting. The bottom of the spiral groove is equipped with a valve block type product acquisition groove, and the selected equipment is divided into three types according to grade along the radial direction. By adjusting the position of the valve block to change the cutting width of each product, the equipment gathering hopper allows the selected multi head ore flow to be collected and exported separately. The cross section of the spiral concentrator, with a change in the slope of the curve, is extremely suitable for the selection of fine-grained materials. Principle of spiral chute of coal washing equipment III. The characteristics of spiral concentrator are particularly concerned in many gravity concentration equipment due to its low power consumption, simple structure, small floor area, simple operation, stable beneficiation, clear screening minerals, no moving accessories, convenient Computerized maintenance management system, large production capacity per area, etc. The machine has a wide and relatively flat groove surface, and the area where the slurry flows in a laminar flow is relatively large, making it more suitable for processing medium to fine (-4mm) sized ores. We have made fiberglass chutes with diameters of 400, 600, 900, and 1200MM in China, Ф The processing output of 1200mm four heads is about 4-6 tons/hour. The principle of the spiral chute of the coal washing equipment is four. The structural composition of the fiberglass spiral chute is composed of a feeding homogenizer, a cross (tripod), a feeding chute, a spiral groove, a receiving groove, a gathering bucket, and a groove pillar. Principle 5 of spiral chute of coal washing equipment. This machine is applicable to the separation of small materials with Granularity of 0.3-0.02MM to obtain iron ore, ferrotitanium ore, chromite ore, pyrite ore, zircon sand, Rutile ore, monazite ore, phosphorus ore, tungsten ore, placer tin ore, tantalum niobium ore, niobium ore and other nonferrous metals, rare mineral metals and nonferrous metal mineral bodies with different gravity. Principle of Spiral Chute for Coal Washing Equipment