Solid material comminution or disintegration – Apparatus – With automatic control
Patent
1989-03-10
1990-03-20
Eley, Timothy V.
Solid material comminution or disintegration
Apparatus
With automatic control
241 36, B02C 904
Patent
active
049094491
ABSTRACT:
A first stage of a rock crushing plant is controlled by controlling the feed rate supplied to a primary rock crusher and by indicating to haul vehicles bringing rock to the plant from a quarry when the load being hauled can be dumped in to a hopper supplying the feeder for the primary rock crusher. Non-material contacting level sensors, such as ultrasonic transducers are used to sense the level of rock within the hopper and within the cavity of the rock crusher. Further, the load of the motor driving the primary rock crusher and the motor driving an output conveyor that receives the discharged rock from the primary rock crusher is monitored. The output signals from the level and load sensors are compared with preset values to adjust the feed rate of rock being delivered to the primary crusher in order to optimize the throughput of rock in the first crushing stage of the plant.
REFERENCES:
patent: 4281800 (1981-08-01), Flavel
patent: 4651933 (1987-03-01), Schutte et al.
patent: 4706893 (1987-11-01), Brock
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