Vertical Shaft Impactor

The energy required for size reduction in VSI crushers comes from impact crushing, not compression force, which is accomplished via a high-speed rotor and anvils. In a VSI, material is propelled by centrifugal force from a rotor against the outer anvil ring. As a result, the material fractures and splits along the rock's or mineral's inherent flaws. The product is ideal for current Superpave highway asphalt applications since it often has a cubical form. The ultimate particle size is determined by the rotor speed (in feet per minute).
The high cubical fracture % of the VSI results in tighter particle size distribution and increases first-pass product production. It has excellent throughput capabilities that are perfect for beneficiation (elimination of soft material). The VSI takes extremely abrasive materials when properly constructed. It is simple to use and maintain. By altering the rotor speed or cascade ratio, the product size may be changed fast. To minimise downtime, certain versions incorporate reversible wear components. Because of lower energy costs and a lower cost of wear per tonne, the VSI often offers low operating costs even in high-moisture applications.

The crusher works by propelling the material to be crushed into a crushing chamber lined with the same material at high speed through a spinning rotor. This process causes a crushing motion between rocks that occurs naturally.
When a smaller product size is required than the feed size, this crusher is often operated in close circuit with a vibrating screen that has the right size and has enough capacity. The crusher may also be used in an open circuit, though. A screen is necessary in both situations for the ultimate separation of the requisite sized goods. By adjusting the rotor RPM and/or the quality (%) of multi-flow utilised, the product's gradation may be changed.

Center feed

The centre of the rotor of the standard VSI receives the feed from above. The material is subsequently thrown into the crushing chamber through an exposed space. Later, it strikes the outer anvil ring. The majority of materials respond extremely well to this crushing action, which transfers a high level of energy to the material. It produces a product with a very consistent and uniform grade.

Cascade feeding

In cascade feeding, material enters the crushing chamber from above and skips the rotor. Cascade feeding gets its name from the way material flows into the crushing chamber from above, avoiding the rotor, as it fills up a big feed bowl with an outer diameter greater than the rotor's outer diameter. Similar to slowing the rotor, increasing input through cascade has the same effect. Up to 10% of the time, cascading feeding may have no impact on particle size distribution or quality. If more cascade feeding is employed, the product gradation curve and product form will alter.

The VSI gives you several benefits:

• The VSI smashes tough and fragile materials with ease. It is versatile and effective. For processing rock, cement clinker, grinding media, concrete aggregate, and refractory material, it is the best option. The VSI is a crusher that is ideal for use in building and road construction.
• Easy to Operate: The VSI is a reliable piece of equipment. It is simple to implement and maintain.
• Energy-efficient: It provides you with a huge output while consuming little energy.
• Rocks may fall into the bottom of the VSI while it is in use. It creates a shield that lengthens the machine's durability. For greater stability and dependability, the main shaft of the crusher employs calibrated rolling bearings. Additionally, this function could lower your maintenance costs.

You choose a VSI crusher based on the following factors:

• Capacity required
• Size of the feed material to be crushed
• Output needed