February 2016

The best in new technology

Compiled by Kelsey Rolfe, Kate Sheridan and Katelyn Spidle

Keeping things on track

Courtesy of Richwood

When conveyor belts are misaligned and wobble from side to side, maintenance staff may need to intervene and even shut down the belt until the problem is fixed. Richwood’s new ON-Track Return Belt tracking idler tries to solve the problem of misaligned conveyors before it even starts. The new idler curves along the inside of the returning belt, applies pressure evenly and keeps the belt aligned. This design avoids some of the issues presented by conventional training idlers. “We are controlling the track of the belt, not trying to train it after it misaligns,” said Kevin Maloy, Richwood’s COO. Training idlers often try to correct a misaligned belt’s path using edge guide rollers, which can wear on the belt. Richwood’s design does not use edge guide rollers, and has also eliminated moving pivots or swivels common to training idlers. With less stress on belts from edge guide rollers and with fewer moving parts to maintain, belts can be kept aligned and companies can limit downtime and long-term maintenance costs. “The belting will last much longer, and you don’t have people working around the conveyor unnecessarily trying to get it to track to centre,” Maloy said. 

– Kate Sheridan

Quicker cycle times

Cat 6015B Hydraulic Shovel loads Cat 775G truck
Courtesy of Caterpillar

“The most important thing for a job site is to load many trucks and quickly exchange those trucks,” said Arthur Milkowski, platform manager for Caterpillar’s new 6015B hydraulic shovel, at an Arizona press event in November. That is why the new 6015B shovel – based on CAT’s 5110B structure – includes several features geared towards reducing cycle time. The shovel is equipped with a CAT C27 ACERT engine, delivering 606 kilowatts of rated power and allowing for faster digging cycles. It also comes with an 8.1-cubicmetre standard bucket and a payload capacity of 14.6 tonnes, which enables the shovel to fill a CAT 773 truck in four passes, a 775 in five passes and a 777 in seven passes. CAT tested the shovels for roughly a year in semitropical and subarctic conditions, as well as the continental U.S. prior to releasing them. “Doing the full validations is why we’re confident about this machine,” Milkowski said. 

– Kelsey Rolfe

The equalizer

Metso crusher

Courtesy of Metso

All rocks are not created equal, and they do not all end up the same size after an initial trip through the crusher. When Metso set out to develop a crusher that produces a more consistent result after the first circulation, it discovered that a steeper feed angle had a huge impact on how efficiently the machine was able to crush rock. Therefore, it increased the feed angle on its new NP13 to 50 degrees, up from 40 degrees in the previous NP1213 model. “Having a steeper feed angle allows for better penetration and more efficient crushing action,” said Vincent Schmitt, Metso’s product manager. To further improve the efficiency of the crushing action, the NP13’s blow bar can be customized with either manganese or chromium iron to suit the abrasiveness of the material to be crushed. Productivity is also enhanced, as the maximum available power on a single drive was increased to 315 kilowatts (kW) from 260 kW in the previous model. The NP13 is ideal for secondary and tertiary applications, with a rotor width of 1.3 metres.

– Katelyn Spidle

In this issue
     Project Profile
    Upfront: Copper
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