Sandvik Mining has expanded its CH800 series of hard rock mining cone crushers, with the launch of two technologically advanced models designed to improve productivity and profitability in the mid-range segment. The new models, the Sandvik CH860 for high-capacity secondary crushing and the Sandvik CH865 for high-reduction tertiary and pebble applications, are said to outperform competing crushers in the same class by up to 30%, and double performance range.
Both feature higher crushing forces relative to mantle diameter and a 500 kW motor, and combine a range of advanced automation features for more secure and productive processing.
According to Kevin Hole, Sandvik’s Business Line Manager for Crushing and Screening, the two new crushers are “scaled down” versions of Sandvik’s existing CH890 and CH895 cone crushers, resulting in two new mid-range models in its mining cone crusher lineup.
“These two mid-range models are even more productive, robust and reliable, and feature enhanced environmental, health and safety characteristics.
“Depending on the application, both the CH860 and CH865 outperform competing equipment in the mid-range segment by as much as 30 percent and deliver a two-fold increase in performance range.”
Both incorporate Sandvik intelligent systems that enable real-time performance optimisation, he said.
“We’ve also come up with smart, compact design solutions to reduce dynamic loads and minimise engineering and installation work.
“These crushers feature fewer moving parts than competing models, while non-welded, bolted liners on the top and bottom shell enable safer, easier maintenance.”
Both new crushers also feature Sandvik’s exclusive ASRi (Automatic Setting Regulation control system) and Hydroset to ensure 24/7 automatic operation at peak performance.
ASRi constantly monitors pressure, power draw and mainshaft position, automatically adjusting the settings during full load.
Sandvik’s Hydroset main shaft support system provides protection from overloads by permitting tramp iron and other uncrushable materials to pass through the crusher before automatically returning to the original setting.
In addition, the system automatically compensates for crushing chamber wear to provide consistent product size.
“Hydroset enables us to incorporate our unique PLC-controlled electric dump valve for tramp iron protection, significantly reducing pressure peaks and mechanical stress on the crusher, greatly improving reliability,” said Hole.
“In these challenging times mines are often looking for increased productivity without necessarily expanding their plant,” he said.
“Both the CH860 and CH865 have been designed as easily installed replacement crushers that increase productivy.
“At our test site we replaced a similar sized crusher, on exactly the same foundation, greatly increasing final product output and significantly extending crushing chamber liner life.
“And our Hydroset electric dump valve repeatedly proved its tramp iron protection value, reducing costly unplanned breakdowns,” Hole said.