What are the advantages of vertical composite crushers that make them worth choosing

Vertical composite crushers are cost-effective sand-making equipment designed for fine crushing and grinding. They feature a simple structure and utilise the ‘stone-on-stone’ principle for material crushing. These crushers offer high performance at low cost, capable of reducing materials to a size of 0-3mm, making them an ideal choice for medium-hard materials.

Working principle of the vertical composite crusher:

During operation, the rotor fixed to the main shaft rotates at high speed in a specific direction driven by an electric motor. Block-shaped materials are fed into the hopper and fall onto the discharge disc. After being impacted by the high-speed rotating discharge disc ribs, the materials are rapidly thrown towards the impact plate under the influence of centrifugal force, resulting in collision.

Under the influence of the inclined surface of the impact plate and gravity, the material is rebounded along the inclined surface into the conical rotor crushing chamber. The material is impacted by the high-speed rotating upper hammerheads, gaining sufficient kinetic energy before being thrown towards the impact plate, repeating the aforementioned crushing process. The material particles collide with each other within the crushing chamber for further crushing and spiral downward in the conical space.

The material enters the cylindrical rotor chamber, where the already crushed particles are further finely crushed, compressed, and ground, repeating the aforementioned crushing process. Through this high-frequency impact, counter-impact, compression, and grinding by the upper, middle, and lower hammers and impact plates, the material is gradually crushed from large to small. Due to the impact of the hammer heads and impact plates on the material within the crushing chamber, as well as the mutual collisions between the material particles, the material fractures along its natural joint planes and bedding planes. When the crushed material is smaller than the discharge gap of the upper rotor, it enters the middle rotor crushing chamber for further fine crushing. The material then enters the lower rotor crushing chamber, where the aforementioned impact, counterattack, compression, and grinding processes occur again. However, the hammerheads on the lower rotor have a higher circumferential speed than those on the second stage, resulting in greater impact force and smaller gaps, enabling the material to be crushed into smaller particles and ultimately discharged from the machine in the required particle size.

The composite crusher (composite breaker) series is suitable for crushing limestone, clinker, coal, and other ores in the building materials, mining, metallurgy, and chemical industries, with a compressive strength not exceeding 140 MPa and moisture content not exceeding 15%.

Features and advantages of the vertical composite crusher:

(1) Simple and reasonable structure, low operating costs. Utilises the ‘stone-on-stone’ principle, resulting in minimal wear.  

(2) High crushing efficiency and energy-saving.  

(3) Capable of both fine crushing and coarse grinding.  

(4) Minimally affected by material moisture content, with moisture content up to approximately 8%.

(5) Operating noise level below 75 decibels (dB), with minimal dust pollution.  

(6) Suitable for crushing medium-hard and ultra-hard materials.  

(7) Produces cubic-shaped products with high bulk density and minimal iron contamination.  

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