What factors affect the product particle size of cone crusher

Product particle size is the main process indicator to measure the quality of stone products. The construction industry has higher product particle size requirements for stone than the mining industry. Especially in concrete aggregates, the increase in needle flakes will lead to a decrease in the overall compressive strength of the building and increase cement consumption during the construction process. What are the factors that affect the particle size of cone crusher products? How to improve the granularity of its products?
 

1. The influence of stroke on particle size

The stroke is the distance from the loose side discharge port to the tight side discharge port of the cone crusher. For the convenience of explanation, two different strokes of a single-cylinder hydraulic cone crusher are used to crush the same stone and the finished materials produced are compared.

The size of the stroke in a cone crusher depends on the eccentricity angle. The single-cylinder hydraulic cone crusher can adjust the appropriate eccentric angle according to actual use needs. The method is to use an eccentric copper sleeve with multiple keyways and an eccentric sleeve to form the eccentric angle. By rotating the eccentric copper sleeve to correspond to different keyways, different eccentric angles are formed. In this way, according to the different properties of the ore, with appropriate strokes, the product particle size can be improved.

2. The influence of feeding method on particle size

Uniform circumferential feeding can not only increase product particle size and processing capacity, but also cause the crushing wall and rolling mortar wall to wear evenly, extending the service life.

In actual use, to achieve uniform circumferential feeding through the material distribution plate, the height between the feed hopper and the material distribution plate must be appropriately adjusted. When the height is too high, only a small part of the stone passes through the distribution plate, so uniform circumferential feeding cannot be achieved. When the height is too low, the stone is prone to clogging and reduces the processing capacity. In addition, when the single-cylinder hydraulic cone crusher is filled with ore, it can not only give full play to the crusher's capabilities, but also improve the product particle size.

3. Effect of cavity type on particle size

The single-cylinder hydraulic cone crusher uses two cavity types in use. According to feedback from on-site usage, the use of the improved crushing cavity not only greatly increases the product particle size, but also increases the crusher throughput. The reasons are analyzed as follows: the parallel zone has changed from the original 96mm to the current 145mm, so that the number of crushing times of the stone in the parallel zone by the driven cone has increased from the original 1-2 times to the current 2-3 times. The more times of crushing, the better the particle size of the product obtained.

4. The influence of production line on particle size

The production line has two layouts: open and closed. The open production line is from coarse crushing to medium crushing to fine crushing, without recycling; while the closed production line is from coarse crushing to medium crushing to fine crushing, with some products being screened and recycled. , perform secondary crushing. The particle size ratio of products produced by closed production lines is much higher than that of open production lines. The analysis reason is that adding multiple crushing times can produce better shapes, especially fine-material products.

Through on-site usage feedback, the appropriate cone crusher stroke, appropriate feeding method, and optimized crushing chamber type are selected to crush stone in the closed stone production line, and the product particle size is improved in efficiency.