Selecting and applying a Barmac® VSI crusher correctly requires understanding the economic and application-specific factors. The desired production volumes define the optimal size of the crusher. Rock-on-rock or anvil crushing, on the other hand, results in slightly different end products than normal tertiary and quaternary compression type crushing.
Barmac® VSI crushers produce cubical aggregate that performs well in concrete, asphalt and base mixtures. It can also be considered for fine crushing, particularly for abrasive materials, as it is not mechanically restricted in the same way as compression crushers are at fine settings.
If applied correctly, rock-on-rock crushing offers the lowest wear cost per tonne of any impact crushing method. In most cases, Barmac® VSI crushers are applied in the last crushing phase of any crushing circuit. It is at this stage of the process where the crushing of the final products is performed, be it the production of superior shaped aggregates, manufactured sand, mill feeds, or liberation or separation of a particular mineral from its host rock.
Aggregates production
Different quarries often utilize VSI crushers since they can produce high quality cubical shaped aggregates that meet all major construction specifications. Barmac® crushers are particularly successful in producing road-base, top dressing chip, concrete and asphalt aggregates. In these applications, Barmac® VSI crushers can be operated either in open or closed circuit, depending on the types of aggregates and the specifications required.
Manufactured sand production
Accurate shaping capabilities and acceptance of fines make Barmac® crushers excellent for manufactured sand production. Rock-on-rock crushing ensure low operating costs, and whenever more reduction is needed, or the feed is coarse, the crusher can be equipped with metallic anvils. Barmac® crushers’ speed is adjustable, so they can also produce very fine end products if required.
Industrial minerals production
With features such as controlled product grading, preferential crushing, low production costs and ability to produce finely graded products, Barmac® VSI crushers can optimize the performance of most industrial mineral processing installations.
In this sector, Barmac® crushers are popular as cost-effective fine crushing equipment for the abrasive materials.
For example, the diamond mines have noticed that utilizing Barmac® crushers simplifies the liberation of diamonds from gangue minerals. In addition, fine crushing cement clinker with Barmac® crushers is gaining popularity since VSI crushers have proven their ability as cost-effective pre-grinders.
Metallic minerals production
In mining metallic minerals, Barmac® VSI crushers with high capacity and ability to produce finely graded products such as mill feed, sinter feed or material for heap leach operations, are ideal machines that can replace high-cost, inefficient crushing and milling equipment.
Adding Barmac® VSI crusher to an existing circuit can save considerably if a plant is looking for increasing production without replacing existing production equipment in a milling circuit.
Waste recycling
Barmac® VSI crushers can outperform many other equipment in recycling applications. These recycled materials can be waste aggregates or demolition waste, slags, or even glass and other waste products that can be processed and sold.
Mobile and portable applications
Barmac® crushers are also available as mobile and portable versions, which opens up a new range of business opportunities for contractors, quarry operators, recycling and mining applications. In addition to easier mobility, portable and mobile VSI crushers have advantages such as flexible process adjustability, less material transport required, less manpower needs, and compliance with strict environmental standards.
