FRP spiral chute is a combination of spiral concentrator, spiral chute, shaker, centrifugal concentrator features of the device, it is the best equipment in mining, mineral processing, particularly placer mining waterfront, river, sand beach, the river channel more ideal. Products with a reasonable structure, simple installation, small footprint, ease of operation, processing stability, sub-ore clear, large capacity, high efficiency beneficiation enrichment ratio, high recovery rate, running and reliable. Light weight, moisture, rust, corrosion resistance, to give the amount of ore and concentration fluctuations, size, quality, adaptability, no noise characteristics. Use the spiral chute erected, calibrate vertical line, or wood with a metal frame fixed in place by sand pump the ore sent to the two feed screw top mouth, adding additional water to adjust the concentration of mine pulp, mining Natural paddle down from the high swirl to produce a centrifugal force of inertia of the ramp velocity rotation, specific gravity, particle size, shape differences ore, by the action of gravity and centrifugal force of the cyclone will separate ore and sand, ore concentrate bucket inflow pipe connected to the tailings flow into the tailings pond sand bucket pipe received, then sand pump to drain away, to complete the whole process of dressing. Spiral chute is working characteristics were fine interception, the tailings at the end of the slot, and the sorting process without flushing water. Spiral groove is the main parts of the device, spiral sheet of glass made of steel bolted together. The spiral grooves in the surface coated with a wear-resistant lining, usually wear-resistant polyurethane glue or epoxy resin incorporated into an artificial diamond. While pasted on the inner surface of the spiral trough belt wear layer containing diabase powder. In the top of the spiral groove watched mine and mine shafts; the lower part of the product and then intercepting the mine shafts. The entire apparatus set up vertically with the channel. Chute beneficiation belong to ramp flow sorting process. Pulp give to a certain inclined chute 'or on a slope, in the water, driven by a loose group of mineral particles and stratification, the upper light mineral quickly discharged outside the tank, the lower layer of heavy minerals are retained in the tank or from the lower discharge at low speed, After acess respectively, that was concentrate and tailings. Chute is the earliest of mineral processing equipment. Ancient income by panning method selected heavy minerals, tool use is the original chute. Some coarse placer tin chute and sand chute followed so far are still in use. Mid-19th century has a mechanical transmission belt chute and round chute, became the fine non-ferrous metal ores main sorting equipment. After the emergence of a jigger and shaker, so chute applications decreased. But the simple chute with its structure, low production cost advantages, still coarse, medium and fine ore sorting widely used. The 1940s appear multilayer automatic chute, appeared sharp contraction 50s and '60s made chute cone concentrator, shaking bed turn, opened the way for the modernization of the chute. Mud chute has become an effective means of dealing with micro-fine particles of ore. The main advantage of the chute is simple equipment structure, low investment and operating costs, coarse, medium grain chute as well as a higher processing capacity, the disadvantage is sorting accuracy is low, and thus suitable for roughing devices. Widely used in tungsten, tin, gold, platinum, iron ore and some rare, especially in dealing with the application of more low-grade placer. Press chute processed ore particle size can be divided into three categories. (1) coarse chute, to mine the maximum particle size of 2 "3 mm or more, up to 100-200 mm, (2) ore chute, 2 to 3 mm grain processing ore, (3) the sludge chute; ore particle size less than 0.074 mm Henan Chen million Environmental Engineering Technology Co., Ltd. Website:. http://www.chenyikeji.cn http://www.chenyikeji.net http://www.cykjshy.com http: // www. cykjly.com http://www.cykj168.com http://www.hncygckj.com http://www.chenyikj.com http://www.cyhgj.com http://www.sfxksb.com http: //www.ztxsjx.com http://www.ztslx.com