Yantai Jinpeng Mining Machinery CO., LTD

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Spiral Classifier for Mineral Processing

The machine can class the finely milled materials by particle size, fine particles suspended in the water become into the overflow outflow, coarse particles sink to bottom, by the spiral pushing into the upper and return to grinding machine, the machine is also used to separate fine clay in the minerals and used for ores dehydration.

1. Gearing 2. Spiral 3. cell 4. Lifting Device

1.Gearing: The transmission of spiral is achieved by motor through V-belt, ZL60 reducer and the cylindrical gear.

2.Spiral: It is the main components of this machine, it formed by the main shaft, frame, spiral blades, lining iron frame. The frame, spiral blades, linked iron are formed to connected spiral surface, because the shaft is constantly rotating, so the role of helical face is mixing the slurry , make fine particles flow from the overflow weir, coarse mineral particles conveyor from the screw first to discharge port.

3.Cell: Welded by steel plate and shaped steel, it is the body of screw classier.

4.Lifting mechanism: The movement of machine screw parts is achieved through the cycloid reducer, gear, screw. When classifier stop working, the materials in the water chute will precipitated, in order to avoid damage by precipitation and the transmission will occurs over load when it move again, so must lift the screw spindle from water chute and make it leave the precipitation level, for this design lifting mechanism.

Single spiral classifier can be divided into two kinds: common one and up-dated one.

(1)Up-dated classifier increases a automatic sand-return device at the sand-return part, lift ore sand that discharged at tank bottom to a proper position at tank wall,to adapt the configuration of ball mill cancelled big spon head.

(2)When ball mill has cancelled big spon head, it can usually save electricity 1-1.5 degrees per ton ore, meanwhile, avoid frequent maintenance about big spon head, and slow down the wear speed of small gear, improve ball mill run speed, save electricity obviously.

(3) When ball mill has cancelled big spon head, it has no effect on specification and grinding ability of classifier.

Pictures

  Usually used in the following similiar process of gold,silver,copper, lead zinc, molybdenum and so on.

Used onsite

 1.the operation and maintenance personnel of the machine must understand the performance specifications and the structure of the machine.

2. In operation, we should always pay attention to the indicator of electric current and voltage, are not allowed to overload.

3.in operation, and not allow large objects (such as the ball and large materials down from grinding machines) fall into the grading machine, can install a metal net appropriately between the junction part of feed inlet and slot to prevent the ball and others into the grading machine.

4.The first step should be stop feeding when stop the work, and make the spiral clear material in the slot, when stop working suddenly must be raised spiral to avoid the blockage.

5. When upgrade the spiral, the bottom of the blade should leave the surface of water, stop the upgrade of the spiral, when the spiral blade has contact with water, then make screw axis rotation and back in place slowly.

6.must be noted during working hours: First, butter cup should be full of fat, oil cup screw 2-3 turn when working eight hours. Second, the engine oil in the slowdown surface should be filled to the level should be full of oil instructions line.

7. the lower support of the spiral should be checked once a day at least, if found abnormal and can not be reused must be repaired in time.

8.helix blade must be replacement timely if it worn.

9. in order to ensure the good functioning regular of the grader and extended the life of the machine, regardless of how the work of grader, it should carried out planned maintenance after a certain time, inspection and replacement wearing parts, scheduled maintenance recommendations once in six months at least.

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