SANDVIK CH420:01, Руководство по установке

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4. Installation preparations
48 © Sandvik SRP AB – Doc. no. S 223.510 en Ver. 1 CH420:01
4.3.7 Feed arrangement
The efficiency of the cone crusher is directly dependent on the feed
arrangement. To maximize capacity, make sure that the process material is
• fed into the cone crusher at a sufficiently high rate
• evenly distributed around the crushing chamber
• not segregated
Design the infeed so that the construction is removable for easy maintenance
of the cone crusher.
The Cone crusher is normally delivered with a feed hopper and with or
without a splitter to control the distribution of the process material into the
crusher. The feed hopper is divided to simplify removal.
The feed arrangement must be electrically interlocked in such a way that it
cannot be started unless the crusher and the discharge system are running.
Sandvik recommends that you:
• mount an ultrasonic level monitor in the feed hopper to stop the feed if
the material is too high or too low. Another method is to use a variable
speed drive to maintain a constant material level in the feed hopper.
• install a screen ahead of the cone crusher to remove fine material before
crushing. This increases the performance and capacity of the crusher.
• install a magnet ahead of the cone crusher to remove magnetic metal
from the process material, and a metal detector to prevent metal objects
from entering the crusher.
Regulate the feed so there is a build-up of process material in the feed hopper
(choke feed). The process material in the feed hopper should be level with
the top of the spider cap. Choke feeding will create a finer and more uniform
product size, and the cone crusher will run more smoothly and with lower
power consumption.
If a belt conveyor or a chute is used to feed the crusher, the coarser material
will tend to separate from the finer material (segregation). The material
should be de-segregated before it is fed into the crushing chamber.