Screening and iron removing system for silica sand production
A screening and silica sand technology, applied in the direction of sieve, magnetic separation, solid separation, etc., can solve the problems of not achieving good iron removal effect and reducing the iron content of impurities.
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Embodiment 1
[0020] The present invention provides a technical solution: a screening and iron removal system for silica sand production, including an iron removal system and a sieving system, the iron removal system includes an iron removal bin 1, and the iron removal bin 1 is fixedly connected with The first permanent magnet plate 2, the surface of the first permanent magnet plate 2 is provided with a polishing treatment layer, and the interior of the iron removal bin 1 is provided with a conveyor belt 3 and a driving roller 4, and the driving roller 4 is located on the side of the first permanent magnet plate 2 Below, the two ends of the drive roller 4 are movably connected to the wall of the iron removal bin 1 through bearings, and the drive roller 4 is driven by an external driver. On the outside of the first permanent magnet plate 2 and the driving roller 4, and the first permanent magnet plate 2 and the driving roller 4 tighten the conveyor belt 3, the top of the iron removal bin 1 is...
Embodiment 2
[0023] On the basis of Embodiment 1, a feeding device is installed at the feed inlet, and the feeding device includes a hopper 6, and the bottom end of the hopper 6 is fixedly connected with a cylinder 7, and the two ends of the cylinder 7 are closed. And the cylinder 7 is connected to the hopper 6 and the feed port, the cylinder 7 is coaxially provided with a rotating shaft 8, the two ends of the rotating shaft 8 are movably connected to the end wall of the cylinder 7 through bearings, and the upper edge of the rotating shaft 8 A plurality of partition plates 9 are fixedly connected in the circumferential direction, and the partition plates 9 extend to the inner wall of the cylinder 7, and the rotating shaft 8 is driven by an external servo motor.
[0024] The feeding device can realize the control of the feeding amount by controlling the rotating speed of the rotating shaft, so as to avoid the influence of the excessive feeding amount on the iron sand separation effect.
Embodiment 3
[0026] On the basis of embodiment 1 or embodiment 2, the second permanent magnet plate 10 is arranged in the circle of the conveyor belt 3, and the second permanent magnet plate 10 is below the first permanent magnet plate 2, and the second permanent magnet One end of the plate 10 is fixedly connected to an end of the first permanent magnet plate 2 near the discharge port, and the junction of the second permanent magnet plate 10 and the first permanent magnet plate 2 is a fillet, and the second permanent magnet plate 10 The distance between the bottom surface and the conveyor belt 3 gradually increases along the traveling direction of the conveyor belt 3 below it.
[0027] The distance between the bottom surface of the second permanent magnet plate 10 and the conveyor belt 3 increases gradually along the advancing direction of the conveyor belt 3 below it, so that the iron sand that is adsorbed can be effectively dropped off, so as to avoid that the iron sand is under the secon...
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