Cone crusher is one of the popular medium and fine crushing equipment, suitable for crushing various medium hard and hard materials. However, many users find that sometimes even with full production, they still think that the crusher’s production capacity is not high enough to achieve the ideal production state. This article shares 11 operating techniques to increase production capacity, and I hope it will help you.
1. Keep the tight edge discharge port parameters unchanged
If you want to stabilize the output, quality and load of the sandstone products, the first thing to ensure is that the parameters of the discharge port of the tight edge of the cone are unchanged. Otherwise, the particle size of the product will be unexpectedly increased, which will affect the entire production line system and the final output.
Suggest: It is recommended to check the parameters of the tight-side discharge port every shift.
2. Try to continue the “full chamber” operation
If a cone breaks “hungry” and “satisfactory” due to factors such as unstable feeding, the product’s particle size and product rate will also fluctuate. Half-cavity running cones are not ideal in terms of gradation and needle shape.
Suggest: Sand and stone manufacturers try to ensure that the cone breaks through the cavity, and do not feed too much to obtain better throughput and grain size. This is especially important for the production of third-level cone breaks (short-end cone breaks) in the final product.
3. Don’t feed too little
Giving only a small amount of raw material will not reduce the burden of cone breaking. On the contrary, too little raw material will not only damage the output of the product and have a poor particle size, but also have an adverse effect on the cone broken bearings.
According to the working principle of cone breaking, the actual power of cone breaking should not be lower than 40% of the rated power. In order to obtain proper “load bearing positioning” and maximize productivity, the actual power of cone breaking should be kept between 40% and 100% of rated power. Reaching 75% to 95% of rated power during operation is the best choice.
4. The feed drop point needs to be aligned with the center point of the cone break into the feed port
It is recommended to use a vertical deflector to guide the falling point of the feed at the center of the cone breaking inlet. Once the drop point is eccentric, one side of the crushing chamber is full of material and the other side has no or little material, which will cause adverse impacts such as lower crusher throughput, increased needle-shaped products, and super-large particle size.
Improper operation: Once this happens, the operator tends to reduce the tight-side discharge port parameters and try to make the crusher produce the product with the target particle size. However, it is easy to cause overload, adjustment ring jump and other problems on the side of too much feed. It will cause problems such as tilting, tilting, and damage to the base of the adjustment ring, resulting in greater production losses.
5. Ensure feeding evenly
When feeding, it is necessary to avoid the situation where 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 mixed evenly.
Influences: Once the feeding is uneven, due to the abnormal increase in bulk density, the side where the small-diameter stones are concentrated is prone to compaction and blockage, causing the adjustment ring to jump. In the face of the jump of the adjustment ring caused by the plugging, the operating operator will be forced to increase the discharge port parameters, resulting in an increase in product particle size. Over time, it will also cause problems such as damage to the adjustment ring, resulting in greater production losses.
7. Accurately grasp the three design upper limits of cone break
There are three design upper limits for cone breaking: upper limit of throughput (capacity), upper limit of power, and upper limit of crushing force.
The upper limit of cone crushing capacity refers to the maximum throughput of the crusher. A cone crusher that is running in “full cavity” has already reached the maximum throughput. If the limit is exceeded, the feed inlet will overflow; when the feedstock increases and the material breaks finer The actual power of the crusher will rise at the same time; the same as the power, the crushing force generated between the cone-shaped bowl-shaped tile and the crushing wall will also increase with the increase in the amount of feed and the finer crushing of the material. The adjustment ring will bounce and loosen.
9. Monitor and try to ensure the proper speed of the crusher
Influences: If the proper drive belt tension is not maintained, the drive maintenance is incorrect, or the drive maintenance is ignored, belt slippage and a drop in the speed of the crusher may occur during work. The throughput of the crusher’s stone with a reduced speed has dropped sharply, while the power consumption has increased sharply, the unit energy consumption has increased, and operating costs have increased.
10. Control the fine material content in the feed
Fine material in the feed: the material that enters the crusher’s stone and has a particle size equal to or less than that set at the tight-side discharge port. According to experience, for the second-level cone crusher, the fine material content in the feed should not exceed 25%; for the third-level cone crusher, the fine material content should not exceed 10%.
Excessive fines are usually caused by vibration screen problems. Insufficient screen hole diameter or insufficient screening capacity may cause this problem. Too much fines will cause problems such as insufficient power utilization and abnormal increase in unit energy consumption during crushing.
11. Do not feed too high
For small and medium cone crushers, the maximum suitable height for the material to fall from the feeding equipment to the feed inlet is about 0.9 meters. If the feeding height is too large, the stone can easily “rush” into the crushing chamber at high speed, causing impact load to the crusher, and the crushing force or power exceeds the upper design limit.
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