Experienced persons in the sand and gravel aggregate industry should know that a reasonable production line configuration generally meets two criteria: 1. Make full use of the terrain advantages of the aggregate production site to save site and civil construction investment; 2. The selection of equipment is just right, the production line Energy efficient. So how can we do both of the above?

1. Terrain layout

The production process of sand and gravel aggregate generally includes the unloading and feeding stage, the crushing and screening stage at all levels, the storage and sales stage of the finished material. When the customer arranges these three stages, if the site terrain is undulating, make full use of it. Height difference advantage to install equipment. If the terrain is relatively flat, first select a flat site as the unloading platform, and use the natural height difference of the terrain to arrange the primary crushing equipment under the platform section to reduce the amount of civil engineering; The sand making link is arranged in an open and flat place as a buffer; after that, the screening and finished product piles are built in a relatively flat position at the bottom of the mountain, and the finished product piles are close to the gate of the factory area, which is convenient for transportation.

Second, the choice of aggregate bulk machine

Choosing a suitable aggregate bulk machine is an important part of the layout of the sand and gravel aggregate production line, and the aspects to be considered in the selection of equipment include material properties, production scale, performance of crushing equipment, particle size and shape of finished materials, and equipment compatibility. .

1. The nature of the material. The hardness and compressive strength of materials are one of the important factors affecting the crushing process and equipment selection. Materials with high hardness wear more to the equipment, and it is necessary to choose equipment that is crushed by extrusion principle. Jaw crusher is usually the best choice; if the hardness is medium or small, hammer crusher is usually selected, because it mainly passes The impact action crushes the material, and the finished material has a good grain shape and few needle pieces; and under the same output conditions, it saves 30% of electric energy than a jaw crusher with a high idling rate.

2. Production scale. The production scale of the sand and gravel aggregate production line is closely related to its economy. Since there are many manufacturers of production equipment, there will be multiple schemes for the same production project. It is recommended that customers choose an economical scheme after comparison to reduce production costs. In principle, a scheme with a simple process layout is selected. If the first-stage crushing can meet the requirements, the second-stage crushing is not required, and as few crushing, screening and conveying units are used as possible.

3. The performance of crushing equipment. The performance of the crusher directly affects the crushing process and product particle size. The new hammer crusher with high crushing ratio integrates crushing and shaping functions, one crushing the top and two crushing, which can reduce the number of crushing sections; the rotary crusher which relies on kinetic energy to crush produces more cubic products; the impact crusher With the help of the "stone-on-stone" principle, the obtained product has a good grain shape, but the sand-making efficiency is not as good as that of the "stone-on-iron" vertical impact crusher.

4. The particle shape and particle size of the product. The particle shape of the product refers to the geometric shape of the particles, and the particle size refers to the size of the particles. Whether it is the particle shape or particle size of the product, it is the main process index to measure the quality of the product. With the continuous improvement of the standards for sand and gravel aggregates for construction, customers can only choose suitable equipment, mainly crushing and sand making equipment at all levels, in order to produce high-quality finished materials and obtain good sales and economic benefits.

5. Mutual matching of aggregate bulk machines. A complete sand and gravel aggregate production line needs to be equipped with at least three kinds of basic equipment, including feeder, crusher, vibrating screen, and some sand making machines, sand washing machines and dust removal equipment. If the production line is to run smoothly, the output and models of various equipment must match each other. It is recommended that customers choose a manufacturer that produces complete sets of aggregate production equipment, which can not only save the time and cost of purchasing equipment, but also obtain a reasonable configuration plan.

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