Mobile secondary crushing unit launched

• 
• 1st July 2009
• Quarrying
 

The UH421 mobile secondary crushing unit, launched by Sandvik, has a screen placed alongside the unit and comes with an optimal feed hopper. This means that the material is slowed down and well spread out by the time it reaches the screening media and the screening area in general is optimised.

The efficiency of the Sandvik SS screen was illustrated during tests preceding the launch, when 8-16 material taken directly from the crushing unit contained no fines at all. The result was very positive, as the input material was screened shortly after primary crushing, and was therefore relatively dry.

"A good result depends of course on the conditions at that specific customer, but it still shows the improved screening process," says Andreas Persson, product manager of wheel mobile units, Sandvik Mining and Construction.

The feed station can easily be removed making it is possible to feed the material directly into the crusher. The conveyors are equipped with a robust drive, including external motors and angle gears.

The working conditions around the UH421 are improved thanks to Sandvik's low-noise screening media, leading to high separation efficiency and long service life.  In addition, the conveyors are equipped with dust encapsulation and dust filter reducing dust emissions to a minimum.

The crusher in the UH421 is the electrically powered CH440, featuring high capacity, high reduction, low manganese wear and large feed acceptance capacity. Furthermore, the crushing process is continuously and automatically monitored by the intelligent automatic setting regulation system ASRi.

A brand-new and ‘user-friendly' control panel provides full control of the process with continuous information on current and historical production, facilitating troubleshooting and minimizing operations disturbances.

The chassis of the crushing unit has been equipped with a third self-steering axle for flexibility during relocation, and it is designed to be registered as a towed vehicle.

The crushing unit was designed to make registration possible, in line with Sandvik's philosophy aiming at fulfilling inspections requirements. The UH421 has been inspected by the Swedish Road Administration and the Swedish Motor Vehicle Inspection authorities.

"When our customers talk about safety, we can show that we are thinking along the same lines," says Olov Andersson, design manager and project manager for development of the Sandvik UH421.

Although road safety is the biggest reason for registration, it also makes higher speed possible during relocation.

"For some customers, speed is an advantage and translates into cheaper transportation," says Andreas Persson.

Sandvik Mining & Construction Ltd

Hearthcote Road
Swadlincote
Derbyshire
DE11 9DU
UK

T: 01283 212121
F: 01283 217342