Sandvik has debuted two 750 kW cone crushers for secondary and tertiary crushing.
Named the CH890 (for secondary) and the CH895 (for tertiary/pebbles), they are designed to replace the CH880 and provide increased production.
The CH890 has a throughput range of between 248 and 2100 tonnes/hour, while the CH895 has a throughput of 200-1000 tonnes/hour, depending on application and material being processed.
These two new crushers include specialised geometries for more efficient crushing, higher engine power, greater structural strength, and proven technologies based on their predecessor models.
Both have specially designed, strength-optimised topshells, and dedicated crushing chambers on the CH895 model make it ideal for tertiary crushing as well as pebble crushing in ore-crushing applications.
On the CH890, the redesigned topshell and crushing chambers are optimised for secondary crushing.
While key features include the heavy-duty structure and 750 kW engine power, according to Sandvik it is the specialised geometries and smart crushing features of these units that uniquely drive efficiency and throughput.
The new mainshaft, made from a new high-strength material, is designed to withstand harsh mining requirements while the strength-optimised bottomshell design allows for greater loads – with the heavy-duty structural design ensuring durability and longevity.
Additional features include a relocated external dump valve and a new over-pressure system to keep the lubrication oil clean, thereby increasing time between services.
The units incorporate a hydraulically adjusted mainshaft and an ASRi (Automatic Setting Registration) control system to facilitate online adjustment during full load and ensure peak performance at all times.