A VSI crusher, or to give it its full name, a vertical shaft impact crusher, can be used for most crushing applications. The principal uses will be in quarries and gravel pits to produce products for roads and asphalt, ballast, manufactured sand for concrete and aggregates for use in the construction industry. But VSIs are also used for the recycling of building material, namely concrete and asphalt and the processing of steel slag. Increasingly in a conservation-conscious world, industries must learn to recycle used materials instead of dumping them. And this in itself can be a profitable industry if they are processed properly with the right machinery.
VSIs are commonly used to manufacture high quality aggregates used to build bridges, buildings, and tunnels for example.. VSI crushers are a crucial part of producing manufactured or crushed sand. Nowadays extraction of natural sand is limited and sand is a scarce resource on earth. To meet the demand for sand, more and more needs to be manufactured or crushed.
With this type of crusher, the raw material starts its journey from the feed hopper. It enters the rotor through a central entrance. At this point, the raw material is projected from a spinning table with impellers to the outer circle equipped with anvils.. As the name implies, the VSI crusher spins on a vertical axis. Once inside the crusher, the aggregate feed is projected against anvils and crused by impact into smaller parts. The aggregate feed may be moving at speeds of up to 60-75 meters per second at this point..
