Secondary Impact Crusher

Secondary Impact Crusher

What is a Secondary Impact Crusher?

A Secondary Impact Crusher is a type of crushing machine that typically comes in the form of a Horizontal Shaft Impactor (HSI). This crusher is designed to provide secondary or tertiary crushing capabilities by generating high-speed impact forces to further reduce the size of the material processed. In comparison to a Primary Impact Crusher, a Secondary Impact Crusher is usually aimed at producing smaller, finer particles and more refined end products. It operates by utilizing a rotating rotor equipped with impact tools such as hammers or blow bars that strike the incoming material, causing it to break apart through impact forces. Secondary Impact Crushers are commonly used after primary crushers in various industries such as mining, quarrying, and recycling to achieve a more refined product size or shape.

These crushers excel at producing well-shape aggregates, finely crushed materials, and secondary applications requiring fine particle sizes. They are versatile machines that can handle a wide range of materials, making them valuable in applications where product refinement is crucial. Secondary Impact Crushers offer the ability to adjust settings to control the size and shape of the output material, providing flexibility to cater to specific requirements. The effective impact forces generated by these crushers ensure efficient size reduction, making them essential equipment for various industrial processes where high-quality and consistent output is paramount.

What Parts Do Secondary Impact Crusher Consist of?

1. Rotor Assembly

The rotor assembly is a critical component of a Secondary Impact Crusher, typically comprising a heavy-duty shaft and a rotating disc or drum fitted with blow bars or hammers. As the rotor spins at high speeds, the blow bars or hammers deliver powerful impact forces to the material, crushing and breaking it down into smaller fragments. The design and configuration of the rotor assembly, including the size and material of the impact tools, significantly impact the crusher's performance and efficiency. Proper maintenance and periodic inspection of the rotor assembly are essential to ensure the crusher's operational integrity and to uphold effective impact crushing operations.

 2. Impact Curtains (Breaker Plates)

Impact curtains, also known as breaker plates, are positioned along the sides of the crushing chamber in a Secondary Impact Crusher to help direct and control the material flow during the crushing process. These sturdy plates absorb the impact forces produced by the rotating rotor and impact tools, aiding in further reducing the material to the desired size. Impact curtains act as an additional crushing surface, ensuring that the material is effectively crushed and fragmented as it interacts with the rotor assembly. Their adjustable design allows for the regulation of the output material size and shape, giving operators the ability to fine-tune the crushing process to meet specific application requirements and to produce consistent, high-quality end products with uniform particle sizes. Regular inspection and maintenance of impact curtains are vital for sustaining the crusher's performance and ensuring smooth and efficient crushing operations.

In Which Areas Are Secondary Impact Crusher Used?

1. Aggregate Production

Secondary Impact Crushers are commonly utilized in aggregate production applications to further process crushed materials into finer particles for various construction purposes. In the aggregate industry, these crushers are employed after primary crushing stages to achieve the desired product specifications needed for construction projects. Secondary Impact Crushers excel at producing well-shaped aggregates, reducing debris or flakiness in the material to meet construction standards. They are fundamental in creating high-quality materials for construction activities, road building, and concrete production. The ability of Secondary Impact Crushers to generate finer product sizes makes them essential equipment in aggregate production, boosting the efficiency and productivity of material processing operations.

2. Recycling and Demolition Operations

Secondary Impact Crushers Horizontal Shaft Impactors are pivotal in recycling and demolition applications where the goal is to process and repurpose materials from demolished structures or waste materials. These versatile machines are used to crush and recycle materials like concrete, asphalt, and other construction debris into smaller sizes suitable for reuse in new construction projects or as recycled products. Secondary Impact Crushers play a crucial role in transforming waste materials into valuable resources, promoting sustainable practices in recycling and minimizing the environmental impact of construction and demolition activities. Their efficiency in producing finely crushed material and their versatility in recycling applications make them indispensable tools in recycling facilities and demolition sites, aiding in the efficient management and utilization of recycled materials for a more sustainable future.

How Do Secondary Impact Crusher Work?

A Secondary Impact Crusher operates by utilizing a rotating horizontal shaft equipped with impact tools such as hammers or blow bars to crush materials. As the rotor spins at high speeds, the impact tools make contact with the incoming feed material, delivering powerful impact forces that break down the material into smaller pieces. The material is fed into the crusher through the top opening of the crushing chamber and subjected to the impact forces generated by the rotating rotor. This impact action efficiently reduces the size of the material, producing a finer product suitable for secondary crushing or as the final product for various industrial applications. Secondary Impact Crushers are designed to generate high-speed impacts that facilitate the pulverization of the material, ensuring efficient size reduction and the production of quality end products with consistent particle sizes and shapes.

The control over output size and shape in a Secondary Impact Crusher is usually managed by adjusting the gap between the rotor and the impact tools. This adjustability allows operators to fine-tune the crusher to meet specific requirements for different applications, enabling customization of the end product. The versatility and efficiency of Secondary Impact Crushers lie in their ability to process a wide range of materials, making them valuable in industries requiring finer product sizes and uniform particle shapes. Overall, Secondary Impact Crushers Horizontal Shaft Impactors are crucial in producing high-quality end products by effectively crushing materials through powerful impact forces, contributing to enhanced material processing efficiency and consistency in various industrial sectors.

Secondary Impact Crusher: Precision Crushing
Secondary Impact Crusher: Precision Crushing
Secondary Impact Crusher: Precision Crushing

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Pioneer in Innovative Technology: Polygonmach

POLYGONMACH is a leading global manufacturer of concrete batchingplants, crushing screening plants, and asphalt plants. With TSE and ISO 9001 quality assurance certifications ans a commitment to innovation, quality, and customer satisfaction, we have established ourselves as a trusted name in the construction industry. Our extensive range of high-performance plants caters to the diverse needs of construction projects, ensuring efficiency, reliability, and durability.


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