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A new process for making spiral chutes. Firstly, it indicates that the selection of chutes belongs to the inclined surface flow selection process. Mortar is given to a partially inclined inclined chute or inclined surface. Under the push of water, the mineral particle group is loose and layered, and the upper layer of light minerals quickly flows out of the groove. The lower layer of heavy minerals are retained inside the groove or discharged slowly from the lower part. After receiving each, selected ore and tailings can be obtained. Fiberglass spiral chutes are equipment for mining and beneficiation, making them ideal for sand mining and beneficiation on beaches, river beds, beaches, and streams. The equipment has the characteristics of suitable structure, simple installation, small land occupation, simple operation, stable beneficiation, clear separation, strong processing capacity, high efficiency, high concentration, high recovery rate, and reliable operation. It has advantages such as light weight, moisture prevention, rust prevention, corrosion resistance, and strong adaptability to fluctuations in ore feed volume, concentration, particle size, and grade. 2、 The production principle is that the slurry is evenly distributed and slowly fed onto the surface of the spiral groove through the feeding chute installed on the rotating groove head, implementing sorting. The bottom of the rotating groove is equipped with a valve block type product selection groove, which divides the selection equipment 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 for the differentiation and aggregation of the obtained variable mineral flow. The cross-section of the spiral chute and the slope change of the curve are very suitable for the selection of fine particle materials. New spiral chute manufacturing process III. Special features 1. Stable sorting process and simple operation 2. Large allowable range of feed density 3. Ultra high enrichment ratio and high recovery rate 4. Small area occupied and low water consumption 5. Simple structure without power 6. Strong processing capacity 7. Simple installation and easy operation 8. Low investment and quick results New spiral chute manufacturing process 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. New process of spiral chute production V. This machine is suitable for separating fine and small materials with Granularity of 0.3-0.02MM to obtain iron ore, Ilmenite, chromite, pyrite, zircon sand, Rutile, monazite, phosgenite, tungsten, sand tin, tantalite, tantalum niobium or other nonferrous metals, rare ore metals or nonferrous metal mineral bodies with different density and specific gravity. New Technology for Manufacturing Spiral Chutes