| 简介 |
In a slurry preparation process for preparing uncrushed oil-sand ore to beco me suitable for subsequent slurry transportation, a step-wise series of process steps comprising receiving the uncrushed ore and water into a mixing hopper to create a mixtu re of ore and water; discharging the mixture onto a screen deck to separate oversize a nd undersize fractions; allowing the undersize fraction to discharge into a slurry preparation vessel; discharging the oversize fraction to a self-clearing crusher which comprises a receiving hopper and a driven crushing roll working in conjunction with an endless crushing conveyor chain, each driven by a reversible drive means. Forward motion of the crushing conveyor forcibly conveys the ore into a gap space set between the crushing roll and the crushing conveyor and crushed ore is discharged into t he slurry preparation vessel. In the case of an uncrushable object entering the crushe r gap and being detected by high load on the crushing roll drive or the crushing conveyor drive, the endless crushing conveyor is motivated in a reverse direction to discard the uncrushable object to a rejects pile outside of the slurry preparation vessel. |
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