The crushing system is the core system of the entire production line of sand and aggregate. The crusher, as the key to the crushing system, plays a very important role in the quality and stable operation of the entire production line.
The current sand and aggregate production line often uses graded production methods and a variety of crusher combinations in order to achieve the best results.
Production scale, capital status, maintenance volume of maintenance, performance of products and proportion are the main factors determining the sand aggregate crusher combination form of the production line. The following is a brief introduction to the commonly used crusher combination forms and their advantages and disadvantages.
1) Single-stage hammer crusher system
The advantages of the system are simple process, convenient operation and management, less land occupation, low project investment and low energy consumption per unit product, Disadvantages of the invention are that the product variety ratio is not easy to adjust, the applicability to the ore is poor and the application range is narrow; The product has a poor particle shape with a large amount of fine powder, a low product acquisition rate and a large amount of dust collecting air; High consumption of wear parts and large investment in the later stage.
2) Jaw crusher+impact crusher system
The system has the advantages of more specifications, large-scale production and wide application range; The product variety ratio is easy to adjust, the good grain shape product and less powder; It has strong adaptability to materials with a medium abrasion index. It has the disadvantages of poor adaptability to materials with high abrasion index, medium coarse particle size and aggregate, high wear component consumption ratio of cone crusher, and high energy consumption per unit product.
3) Jaw crusher+cone crusher system
The system has the advantage that the product variety ratio is easy to adjust; It is suitable for materials with a high abrasion index; The product has a good particle shape with a small amount of fine powder and high coarse particle size and aggregate rate of obtaining; Low energy consumption per unit product; Low consumption of the wear parts. The disadvantages are that when the system capacity is large, three-stage crushing or more crushers are required, which will lead to complex processes and high project investment; The application range is narrow compared with the impact crusher system.
4) Jaw crusher+impact crusher+vertical shaft crusher (sand making machine)
The system is based on the jaw crusher and impact crusher system and adds a vertical shaft crusher to form three-stage crushing. The role of the vertical shaft crusher is to shape the aggregate. In addition to the advantages of the jaw crusher and impact crusher system, the combined form can also produce aggregates of different quality. At the same time, the fine powder produced in the shaping process of the aggregate can also be used for producing machine-made sand. The disadvantage is that the primary crushing equipment is added with the increased initial investment and the high total investment.
5) Jaw crusher +cone crusher +cone crusher systems
The system is based on the jaw crusher and cone crusher system and adds another cone crusher to form three-stage crushing. In addition to the advantages of the jaw crusher and cone crusher system, the combination form also has the characteristics of large production capacity, suitable for large-scale production lines. The disadvantage is that the primary crushing equipment is added with the increased initial investment and the high total investment.
The crushing system is key in the sand and aggregate production line. The capacity of the same crusher to crush different materials under the same conditions is different, and the capacity of different crushers to crush the same material under the same conditions is also different. How to choose the crusher type and combination form when crushing materials needs to be considered the physical characteristics of the material, the quality of the product requirements and capacity.
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