1. Keep the parameters of the discharge port on the tight side unchanged
In order to stabilize the output, quality and production line load of sand and gravel products, the first thing to ensure is that the parameters of the discharge port on the tight side of the cone crusher remain unchanged, otherwise it will easily lead to an unexpected increase in the particle size of the product, which in turn affects the entire production line system and the final output.
2. Try to keep running “full cavity”
If a cone crusher is “starved” and “saturated” due to factors such as unstable feeding, its product particle shape and product rate will also fluctuate. For the cone crusher operating in half cavity, its products are not ideal in terms of gradation and needle-flake shape.
3. Don’t feed too little
Feeding only a small amount of raw material will not reduce the burden of the cone crusher. On the contrary, too little raw material will not only damage the product yield, poor grain shape, but also adversely affect the bearing of the cone crusher.
4. The feed drop point needs to be aligned with the center point of the cone breaker inlet
It is recommended to use a vertical deflector to guide the feed drop point in the center of the cone crusher feed port. Once the drop point is eccentric, one side of the crushing cavity is full of material and the other side is empty or less material, which will cause adverse effects such as lower crusher throughput, increased needle-like products, and oversized product particle size.
5. Ensure uniform feeding
When feeding, it is necessary to avoid the situation that large-diameter stones are concentrated on one side and small-diameter stones are concentrated on the other side, so as to ensure that the stones are evenly mixed.
6. Minimize the retention of the buffer silo and improve the efficiency of the production line
As the “enemy of production”, the cone crusher buffer silo and other related equipment also need to be carefully arranged.
7. Accurately grasp the three design upper limits of the cone crusher
There are three design upper limits for cone crushers: upper limit of throughput (capacity), upper limit of power, and upper limit of crushing force.
8. Guaranteed to operate within the design upper limit of the crusher
If the operation of the cone crusher exceeds the upper limit of the crushing force (adjustment ring jumps) or exceeds the rated power, you can: slightly increase the parameters of the discharge port on the tight side, and try to ensure the “full cavity” operation. The advantage of “full cavity” operation is that there will be a stone-beating process in the crushing cavity, so that the product grain shape can be maintained when the discharge opening is slightly larger;
9. Monitor and try to ensure the appropriate crusher speed
10. Control the fine material content in the feed
The fine material in the feed: in the stone entering the crusher, the particle size is equal to or smaller than the material set at the discharge port on the tight side. According to experience, for the secondary cone crusher, the fine material content in the feed should not exceed 25%; the fine material content in the feed for the tertiary cone crusher should not exceed 10%.
11. The feeding height should not be too large
For small and medium-sized cone crushers, the maximum suitable height for the material to fall from the feeding equipment to the feeding port is about 0.9 meters. If the feeding height is too large, the stone will easily “rush” into the crushing cavity at a high speed, causing impact load to the crusher, and the crushing force or power exceeds the design upper limit.
Post time: Mar-04-2022