Natural sand and gravel deposits are diminishing, and the utilization is also restricted by legislation. At the same time, demand for aggregates is increasing, but sources for fluvial sand are fewer and further away from the marketplace, especially densely populated areas. High transportation costs often make its use an economically unfeasible option. Natural sand quality is often not consistent in moisture nor in grading curve.
The more cubical, rounded and consistent the sand is, the better is the performance in concrete and asphalt. Whereas most other VSI crushers use metallic parts to crush rock, VSI5X uses the rock fed into the machine to crush itself. This autogenous crushing and grinding action provides the lowest cost per ton of any impact crushing method. The high velocity impact crushing achieved with VSI5X improves the soundness and shape of the material.