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The supply of the election machinery lead-zinc, manganese ore grading machine, lead-zinc grading machine, the election mountains and rivers manganese ore grading machine spiral classifier series of major brand high weir single screw and double-helix, the sinking of single screw and double - Spiral of four classifier. This machine widely used in the concentrator with the ball dubbed in closed-loop sub-Cheng Cheng streaming mineral sands, or the gravity concentrator to grade ores and fine clay, and metal beneficiation process of the pulp for particle size grading, and Wash de-mining operations in the mud, dehydration and other operations. The machine has simple structure, reliable, easy to operate and so on. Classifier is also a dressing device is one of the help of solid particles of different sizes, the proportion of different, and thus the settling velocity in liquids of different principles, fine mineral particles floating in the water into the overflow out of the crude ore particles on the bottom Shen. Discharged by the screw into the upper part, to a hierarchical classification of mechanical equipment, able to grind the material inside the mill powder level in the filter, then the use of coarse material into the screw piece rotary vane rotary mill feed mouth, to filter out the fine material discharged from the overflow pipe. The machine uses the base channel, and the body with steel plates welded together. Screw shaft into the head, shaft head, using cast iron sleeve, wear durability, lifting equipment sub-two kinds of electric and manual. Zhengzhou mountains and Heavy Mineral manufactures a complete line of professional equipment, are welcome to visit the guidance of