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Slurry pipeline transportation technology

by:CNS     2021-07-12
Slurry pipeline transportation technology 2021-06-20 20:28:30 Concentrate slurry pipeline transportation-magnetite concentrate pipeline transportation The concentrate slurry selected by the beneficiation plant is processed through a safety screen, and the qualified particle size concentrate slurry is under the screen After the underflow pump is sent to the thickening tank for concentration, the unqualified particle size (more than the allowable upper limit particle size) is screened out and the concentrate slurry is sent to the mill for regrind, and then returns to the safety screen through the pressurized pump for screening. Magnetization and demagnetization of the ore pulp before entering the thickening tank and after being discharged from the thickening tank are to improve its sedimentation performance and facilitate suspension. The overflow water of the thickening tank is recycled after treatment, and the concentrated ore slurry in the thickening tank is pumped through the underflow pump to the fluidized ore bin for adjustment to meet the needs of batch transportation. When the conveying system is shut down, the supernatant of the fluidized ore bin returns to the concentration tank. When the conveying system is turned on, the concentrate deposited in the fluidized ore bin is re-pulped through the high-pressure water nozzle, and its concentration is higher than the conveying concentration, and then discharged into the mixing tank. At the same time, add lime milk and deoxidizer in the stirring tank to ensure that the slurry is alkaline and to remove free oxygen in the slurry and washing water. The slurry discharged from the stirring tank is fed to the safety loop through the feeding pump. Series testing. When the concentration is low, it will return to the concentration tank. When the concentration is qualified, the main pump and booster pump will be directly sent to the terminal fluidized ore bin for adjustment through pipelines to meet the needs of batch transportation. When the conveying system shuts down, the supernatant of the fluidized ore bin returns to the thickening tank. Regardless of whether the conveying system is shut down or turned on, the concentrate deposited in the fluidized ore bin is re-pulped through high-pressure water nozzles. Guangzhou Logistics Company The bottom flow is returned to the filter through the bottom flow pump, and the overflow water of the thickening tank is recycled or discharged after treatment. When the pressure of the main pump is high, it means that the pipeline is scaled or there is foreign matter deposits in the pipeline, which causes the pipeline abrasion loss to increase. At this time, it is necessary to launch the pig at the pump outlet of the first station and receive the pig at the terminal to reduce Pipeline wear loss, restore normal pressure work.
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