Why Choose Vertical Shaft Impact Crushers for Sand Production

Vertical shaft crushers are specialised sand-making products in the mining industry. Compared to other products such as hammer crushers and roller crushers, vertical shaft crushers have high sand output rates, large production capacities, and good product particle shapes. These factors have made vertical shaft crushers a popular choice since their inception. So, what are the advantages of vertical shaft crushers that make them so sought after?

A. Advantages of Vertical Shaft Crushers

1. OCP Heavy Industry's vertical shaft crushers have undergone continuous updates and upgrades. The current models are the result of years of design and development, as well as market demand-driven design, making them a new-generation sand-making product. The design of the crushing chamber has been significantly optimised, particularly with a deep-chamber design, which increases throughput by 30%;

2. The primary functions of vertical shaft crushers are crushing and shaping, with a processing capacity of approximately 16–350 tonnes per hour and an output particle size range of 0–5 mm. The machine supports both oil lubrication and grease lubrication modes, which can be switched as needed;  

3. The feeder has two options: peripheral feeding and central feeding, offering flexible adjustment. In practical applications, this design avoids lengthy adjustment times, thereby improving operational efficiency.

B. Disadvantages of vertical shaft crushers

1. During operation, the crushed material must not contain excessive moisture, as this can cause sticking and blockages in the crusher;

2. Feed material size must not exceed 60 mm; larger pieces may cause jamming when fed into a sand-making machine;

C. Working Principle of Vertical Shaft Crushers

Material is fed vertically into the high-speed rotating impeller from the top of the machine. Under the action of high-speed centrifugal force, it collides and crushes with another portion of material diverted in an umbrella-shaped pattern around the impeller. After colliding with each other, the material forms a vortex between the rotor and the machine shell, undergoing multiple collisions and friction, resulting in further crushing. The crushed material is then discharged directly from the bottom, forming a closed-loop multiple-cycle system. The final product size is controlled by screening equipment to meet the required specifications.

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