At present, the world's machine-made sand mainly adopts dry sand making, among which there are three main sand making processes, namely: vertical shaft impact crusher sand making process; hammer stone crusher sand making process; roller crusher sand making process. The choice of the three processes is mainly due to the three major types of sand making machines, namely vertical shaft impact crusher, hammer sand making machine, hydraulic roller crusher. Let's introduce the advantages of the three types of equipment of Shandong Bond Heavy Industry Technology Co., Ltd., and in which case the choice is the best choice.

1. Vertical shaft impact crusher (sand making machine)

Vertical impact crusher (sand making machine) has two types of "stone hitting stone" and "stone hitting iron". Through the method of centrifugal crushing, the incoming materials are crushed, shaped and sanded, so as to achieve autogenous crushing and high-density autogenous crushing, improve the particle shape of the finished sand, and improve the aggregate efficiency.

Vertical impact crusher (sand making machine) has high crushing efficiency, has the functions of fine crushing and coarse grinding, and the equipment has a strong ability to crush materials; the product has excellent particle shape and low flake content. Suitable for aggregate shaping, machine-made sand and high-grade highway aggregate production. In the crushing and sand making production line, the first choice is still the vertical shaft impact crusher. This product can ignore the hardness of the material, not only can make sand, but also has the function of shaping. The existing market has higher and higher requirements for the quality of sand molds, and the vertical shaft sand making machine is still the current preferred target.

2. Hammer sand making machine

The hammer sand making machine mainly relies on impact to crush materials. The crushing process is roughly as follows: the material enters the crusher and is crushed by the impact of the high-speed rotating hammer head. The crushed material obtains kinetic energy from the hammer head and rushes to the baffle and screen bar in the frame at high speed. At the same time, the materials collide with each other and are crushed many times. The materials smaller than the gap between the screen bars are discharged from the gap. Some larger materials are crushed again on the screen bar by the impact, grinding, and extrusion of the hammer head. The material is squeezed out of the gap by the hammer head, thereby obtaining the product of the required particle size.

The crushing ratio of the hammer sand making machine is relatively large, and the yield rate is also relatively high. The equipment has a relatively high output, a relatively simple structure, low power consumption, and low operating costs. However, the wear-resistant parts such as the hammer head wear faster, and are not suitable for hard materials such as granite, goose soft stone, and ore.

3. Hydraulic roller crusher

This machine has the advantages of small size, large crushing ratio, low noise, simple structure, and convenient maintenance. The crushed materials have uniform particle size, low over-crushing rate, convenient maintenance, sensitive overload protection, and safety and reliability. It is suitable for coal, metallurgy, mining, chemical industry, building materials and other industries, and is more suitable for the crushing of raw coal (including gangue) in large coal mines or coal preparation plants.

The roller crusher has a large crushing capacity. The motor and the reducer are connected with a limited-distance hydraulic coupling to prevent power overload, sensor overload protection, and safety and reliability. The tooth roller spacing is hydraulically adjusted, and the tooth roller bearing is centrally lubricated. The tooth shape is optimized, the tensile shear force is selected for crushing, high efficiency and low consumption, and the particle output is uniform.

The particle shape of the roller crusher is better than that of the hammer crusher, but it is still a little worse than the vertical shaft sand making machine.

Generally speaking, the three sand making machines have their own advantages, and we still need to look at the specific needs of the user to decide. If you are interested, you can tell us your requirements. Bond Heavy Industry has perfect pre-sales and after-sales services, and we can tailor a more suitable and cost-effective product for you.