The sand and gravel production line refers to the special equipment for processing sand and gravel through a series of procedures such as crushing and screening. The sand making machine produced by the sand and gravel production line has certain advantages over natural sand and gravel. First, the material sources of sand making machine include construction waste, pebbles, granite, etc., which can achieve resource recycling. Second, the sand making machine has a more uniform grain shape than natural sand and can better meet the requirements of the industry. So how to reasonably configure the sand and gravel production line? A good sand production line should design a better process design flow according to the required processing scale, rock lithology, and finished aggregate requirements. The process design process is generally considered according to the following principles:
1. Production scale
The larger the scale of the sand making machine processing system, the economic efficiency is the first indicator. As there are more equipment models available for selection, there are multiple solutions. Through comparison with each other, it is determined that the economical choice is better under the conditions of meeting the demand. The solution can save investment, reduce production costs, and bring considerable economic benefits. But when the scale of the processing system is small, the first consideration is the simple process. It can use two-stage crushing and never three-stage crushing. Try to use fewer crushing, screening, and conveying units to meet the design requirements.
2. Product shape and granularity
The particle shape of the product refers to the geometric shape of the particle, and the particle size of the product refers to the size of the particle. Whether it is the product particle shape or the particle size, it is the main process index to measure the product quality. As a concrete aggregate, it not only has certain requirements for the particle size. Moreover, the grain shape is required to be cubic. However, the grain shape of the product produced by different crushers is different, so the grain shape of the product is related to the performance of the selected crusher, and of course it is also related to the nature of the material to be crushed. For example, the rock with the layered crystal structure is easy to produce needles stone.
3. Performance of crushing equipment
The type of crusher directly affects the crushing process and product particle size composition. Generally speaking: a crusher with a higher crushing ratio can reduce the number of crushing sections; a crusher with a laminated crushing principle produces fewer needles and flakes; a vertical impact crusher has a better grain shape. Yes, but the sand making efficiency is not as good as "stone beat iron".
4. The nature of the material
The crystal structure and compressive strength of materials are one of the important factors that affect the crushing process and equipment selection. Materials with higher compressive strength are not easy to be crushed, and equipment with high crushing force is required, equipment available for selection less. In addition, materials with a granular crystal structure are prone to produce cubic products, while materials with a layered crystal structure are prone to produce needle-like products. At this time, the "reshaping" step may need to be considered.