The production process of sand and gravel includes crushing, screening and grading operations, and the main purpose is to achieve crushing and screening of sand and gravel. Crushing is the process of crushing a large piece of ore into sand with a smaller particle size under the force of mechanical force. Screening is the process of sieving sand into finished products of different sizes and specifications. The equipment required for the crushing and screening workshop is determined according to factors such as the size of the incoming and outgoing materials and the output. Under normal circumstances, it is used in combination of jaw crusher + cone crusher / impact crusher + vibrating screen.

1. Jaw crusher

Jaw breaking can crush raw materials to medium size (10-30cm) at one time. If only coarse crushing is needed, the finished materials can be screened through a vibrating screen.

2. Cone crusher / impact crusher

If further fine crushing is required, fine crushing equipment is required. The hardness of the material is higher, cone crusher is used, and the material is softer, and impact crusher is used.

(1) The wearing parts of cone breaker are less worn, avoiding the trouble of frequent replacement of parts. The later operating cost is low. It can produce 1-2/1-3/ and other specifications of stones, and it is equipped with PLC + touch screen automatic control system. Besides, It is more convenient to adjust the discharge.

(2) The purchase cost of counterattack crushing is low. The produced stones have no tension and cracks, and the grain shape is quite good. The crushing line is generally selected for shaping, the structure is simple, and the maintenance is better than cone crushing.

3. Vibrating screen

Screening operation refers to the operation of separating the mixture of different particle sizes according to the particle size. The circular vibrating screen is often used. It has large production capacity, high screening efficiency and can be combined with crushing machinery to form a combined crushing and screening equipment. It is widely used Highway and bridge projects are in progress.

The above is the main processing equipment of the production line, and supporting equipment such as vibrating feeder and belt conveyor are required. Two different crushing and screening production line configuration schemes with an hourly output of 200 tons The degree of hardness of the material is different, and the crushing equipment used for crushing is also different. This section takes hard material (granite) and soft material (limestone) as examples to introduce the detailed configuration.

Plan 1. Granite (hard)-feed size ≤630mm

[Equipment configuration]-Vibrating feeder+HD98 jaw crusher+HXHP300 cone crusher+conveyor+4YK2460 vibrating screen

[Finished product specifications] -0~5, 5~10, 10~20, 20~40

Option 2. Limestone (soft)-feed size ≤50mm

[Equipment configuration]-Vibrating feeder+PE750*1060 jaw crusher+PF1315 counterattack crusher+conveyor+4YK2460 vibrating screen

[Finished product specifications] -0~5, 5~10, 10~20, 20~30

Summary

The above introduced crushing equipment and screening equipment respectively. Crushing and screening are indispensable links in the machine-made sand processing process. Therefore, crushing and screening equipment is an important production equipment in the sand production process. Good quality crushing and screening equipment can provide better aggregates for the sand and gravel industry, and meet the requirements of the market for the use of construction sand. If you want to know more, please consult the manual customer service