Pilot Crushtec International has begun its first production run on the ground-breaking TwisterTrac VS350E vertical shaft impact crusher (VSI).
Following an extensive design and development programme, including field trials at both domestic and international sites, the all-new product is good to go.
National sales manager for Pilot Crushtec Nicolan Govender believes the TwisterTrac VS350E represents a major step change in tertiary and quaternary crusher technology and performance.
“From the outset this product was intended to add significant value to our customers’ operations. We have evolved from the traditional diesel-hydraulic drive package to a diesel-electric drive. Customers will enjoy substantial gains in output and at the same time experience reduced fuel bills and maintenance costs,” he says.
The concept behind the development project was the construction of a product that could deal with South Africa’s notoriously hard rock while delivering high volume output at the lowest possible cost per tonne.
“The product is suitable for several mining applications. The rock-on-rock crushing option is well-suited for diamond extraction and the ability to cope with hard rock is useful in applications like the extraction of chromium ore.”
Design manager Dawie Scholtz explains the logic that has achieved these advances and how it has resulted in some important features that will unlock profitable opportunities for TwisterTrac operators.
“The transition to a mechanical-electrical configuration has gained us several important advantages. The fuel efficient Volvo Engine coupled with a large generator is used to generate electrical power which drives the machine’s crushing, tramming and conveyor functions. All control systems are now electronic thus operators will no longer have to deal with the complications of piping and oil servicing or inefficiencies associated with hydraulic systems.”
Additional features incorporated in the VS350E design include a load volume control which ensures that the crushing chamber is always fully loaded but never overloaded, while variable rotor speeds can be set when the machine is in operation.
The crusher’s cascade facility allows feed that does not need processing to bypass the rotor in the crushing chamber. This can raise output to an impressive 400 tph, eliminate unnecessary fuel consumption and reduce wear on critical parts within the chamber.
All of these combined deliver the product’s outstanding fuel economy and Govender says that the diesel in its 1 100-litre tanks is sufficient to cover more than two back to back 10-hour shifts.
The track-mounted TwisterTrac VS350E is also economical from a labour perspective. Using the product’s on-board remote control system, the crusher can be off loaded from a lowbed trailer, trammed to site, complete its task and then be reloaded with the aid of a single operator.