Balance Throughput & Reduction Ratio Sometimes production capacity needs to be given priority over reduction ratios and vice versa You can optimize for one over the other by adjusting certain cone crusher parameters For maximizing capacity use a flatter crushing chamber larger head diameter faster eccentric speeds and shorter stroke
In a size class comparison Nordberg® HP300 cone crusher has a higher output capacity higher density in the crushing chamber and better reduction ratio producing higher on spec yield end products with the same energy consumption
Cone crushers are versatile machines but using them as they are set up to function is the best idea A 4 1 reduction ratio is a standard crusher application Opting to use it for a 6 1 or 8 1 reduction of material could fall outside the parameters of its intended function with punitive impact on the machine
used to derive a cone crusher size reduction control strategy Manipulated variables MVs There are three possible MVs that can be used to regulate the cone crusher size reduction 1 Closed side setting CSS governing the volumetric capacity of a crusher 2 Eccentric speed ωes governing the number and intensity of crush ing events
With over 11 000 delivered units Metso s Nordberg® HP Series cone crusher continues to be the best choice for any heavy duty high performance crushing operations Further to kinematics the HP cone has much higher utilized crushing force to support high reduction ratios and fines generation when desired Today s HP cones remain the
Reduction Ratios Typical reduction ratio by crusher type Jaw 6 to 1 Cone standard/ secondary 6 to 1 Cone shorthead/ tertiary 4 to 1 A feed to a cone crusher provides good cubicity throughput output gradation etc… Poor feed distribution causes load in the crushing
RR Reduction Ratio is a ratio of a measure at the open side behaviour of the crusher divided by a closed side measure • PRR Process reduction ratio = F80/P80 where F80 is the size for which 80% of the feed is smaller and P80 is the size at which 80% of the product is smaller • LRR Linear reduction ratio = OSS/CSS
Reduction ratio The reduction ratio means the reduction factor between feed and a product This ratio is usually taken from the 80% point of the feed and product curve A typical reduction ratio for the GP secondary crusher is 3 5 and for the GP fine crusher 3 Wear parts application guide Nordberg GP series cone crusher GP cone crusher
More suitable for slabby feeds than jaw crusher [reduction by compression] Roll crusher feed diameter 1 cm reduction ratio 5 1 to 10 1; capacity to 20 kg/s Mohs hardness < Suitable for softer friable and non abrasive materials Ok for wet and sticky materials Cone crusher and short head cone feed diameter < 25 cm; reduction
Limited reduction ratio lower capacity compared to gyratory crushers Cone Crusher A short head cone crusher has a short crushing chamber and it is designed for the production of finer output sizes generally between 6 mm and 25 mm A fine cone crusher also known as a tertiary cone crusher is used for the production of They are
maximum size reduction ratio and they typically focus on producing material for the downstream process They are most commonly used in secondary and tertiary applications when maximum material size reduction in an open circuit is required Nordberg HP Series cone crushers provide high productivity with a smaller plant footprint • High
The gyratory crusher has a conical shaped head that gyrates inside a bowl shaped outer shell while the cone crusher has a mantle and a stationary concave ring Additionally gyratory crushers have a higher crushing ratio meaning that they can crush large material into smaller pieces a larger feed opening and a more consistent product size
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All crushers are designed for certain reduction ratio limitations In most cases cone crushers provide reduction ratios of 4 to 1 and up to 6 to 1 meaning the ratio of the feed size to the crusher vs the size of the crusher discharge The reduction ratio design limitations; and the rated capacity tons per hour of the cone crusher are
reduction ratio or product size this results in a higher throughput While having such high production there are substantial savings to be had MP crushers This table shows crusher capacities for each MP Series cone crusher model The closed side setting CSS is measured in millimeters mm and inches in
Reduction ratio The reduction ratio means the reduction factor between feed and a product This ratio is usually taken from the 80% point of the feed and product curve A typical reduction ratio for the GP secondary crusher is 3 5 and for the GP fine crusher 3 Wear parts application guide Nordberg GP series cone crusher GP cone crusher
The cone crusher has a high reduction ratio ensuring efficient material crushing Discharge This is the final stage of the crushing process When the material is crushed into the preferred size it exits the cone crusher through an opening at the bottom The entrance is located between the mantle and the bowl liner
With over 11 000 delivered units Metso s Nordberg® HP Series cone crusher continues to be the best choice for any heavy duty high performance crushing operations Further to kinematics the HP cone has much higher utilized crushing force to support high reduction ratios and fines generation when desired Today s HP cones remain the
Reduction ratio The reduction ratio is the ratio between the size of feed and the size of the outgoing product It is normally measured at the 80% passing point A typical reduction ratio in the HP standard chamber is 3 5 and in the HP short head chamber it is 2 4 Wear parts application guide Nordberg® HP Series cone crusher