The VSI (Vertical Shaft Impactor) crusher, also known as a vertical shaft impact crusher, is a type of crushing machine that is used to reduce the size and shape of rocks and ores in industrial applications. The invention of the VSI crusher can be attributed to several individuals and developments over time.
The concept of using a vertical shaft impactor for crushing rocks and ores can be traced back to the 1960s. The first patent for a rock-on-rock impact crushing method was filed in 1965 by Donald R. Warren, a New Zealand engineer. However, this early design did not gain much attention or commercial success.
In the 1980s, Dr. Erhard Andreas, a German engineer, and his team at the HAZEMAG Company developed and patented a new design for a vertical shaft impact crusher, which became the foundation for the modern VSI crusher. This design featured a rotor with a vertical shaft that could spin at high speeds, throwing rocks against the anvils or impact plates within the crushing chamber. This resulted in rock-on-rock crushing, where the rocks would collide and break against each other, providing superior crushing efficiency and reducing the wear on the crusher.
In 1986, the first VSI crusher was introduced by the HAZEMAG Company, and it quickly gained popularity for its ability to produce high-quality cubical aggregates for the construction industry. The VSI crusher was particularly well-suited for producing sand and gravel for concrete and asphalt production, as well as for the production of crushed stone for road base and railway ballast.
Since then, various other manufacturers have developed their own versions of the VSI crusher, incorporating improvements in design, materials, and technology. These advancements have further enhanced the performance and versatility of VSI crushers, making them widely used in industries such as mining, quarrying, and construction, as well as in the production of manufactured sand for concrete and asphalt production. The invention of the VSI crusher has revolutionized the field of crushing and has contributed to significant advancements in aggregate production and construction materials technology.
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