Methods to improve productivity of Jaw crusher

Continue to the previous article. Fodamon engineers continue to share with you the methods to increase the production capacity of Jaw crusher.

1. Strictly control the feeding size without jamming and blocking
There is a formula for the design size of feed opening of jaw crusher: the size of feed opening = (1.1 ~ 1.25) × the maximum particle size of raw material.

Many production personnel do not understand it, and always take the measured feed port size as the maximum feed size. Therefore, the raw material exceeding the specified large particle size can easily block the cavity. Although it is not blocked repeatedly, each time the device is blocked, the device will not operate normally for a long time. Therefore, strictly controlling the particle size of the raw materials is one of the most important prerequisites for ensuring the normal operation of the jaw crusher.

2. Strictly control the feeding quantity to prevent blocking due to excessive amount
Because of the shortage of initial feeding, many enterprises have carried out technical transformation to the silos, but after the transformation, due to the lack of devices to limit the feeding amount, there is often another phenomenon, that is, excessive feeding.
Because the working principle of jawbone breaking is half rhythm work, if excessive materials are put in, it will cause that the materials are too late to be broken, and the broken materials can not be eliminated in time, resulting in material jamming. As a result, the capacity of jawbone will be affected by both broken and excessive feed.

3. Feeding rhythm and controlling the feeding to ensure normal operation of jaw breaking
At present, the crushing section of mineral processing enterprises mostly uses end chute feeding, and 2/3 of the entire feeding equipment is even exposed outside the silo. Due to the remote feeding port, the feeding equipment has completely become a vibrating chute. The feeding speed is poor and the wear is severe. The best feeding position for the miner should be in the top 1/3 range of the equipment, but vertical feeding is strictly prohibited to prevent the equipment from losing vibration capacity under pressure or affecting the conveying effect.

Especially when using dump trucks to directly unload, the disadvantage of vertical feeding is more serious. Therefore, how to adjust the angle of the feeding bin to ensure that the feeding is smooth and does not press the material, so that the rhythm of the mining machine and the processing rhythm of the jaw crusher machine are consistent is the technical guarantee of normal feeding.

4. Adjust the angle of the feeder, make full use of the feeder screening function to achieve pre-screening
Vibrating feeder usually has grate bar, which has some screening functions. However, in practical application, due to the amplitude, feeding angle and other reasons, the device is prone to block bars in screening, which makes it lose its original efficiency. In the face of this situation, many enterprises use steel plate to block the grate bar and turn it into a plate feeder.

In fact, under the condition of proper adjustment, the efficiency of the grate of the vibrating feeder is extremely obvious. It is the best way to increase the total flow excess by adjusting the amplitude, angle of feeder and fully releasing the screening function of feeder.

5. Reasonably adjust the jaw opening and the angle of bite to maximize the processing capacity of the equipment
The size of the jaw crusher’s orifice determines the processing capacity of the equipment. The jaw crusher is often used as coarse crushing equipment, and the size of the discharge port should be based on the optimal feed particle size of the two-stage crushing. The adjustment of the phagocytic angle (the angle between the movable jaw plate and the fixed jaw plate) needs to be strictly carried out, generally within the range of 17 ~ 26 ° (the actual conditions prevail).

In addition, the horizontal stroke of the moving jaw, the angle of the discharge layer, the speed of rotation, and the humidity of the material are also factors that affect the production capacity of the jaw crusher. You can improve the jaw bankruptcy performance by adjusting these factors.

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