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[an error occurred while processing this directive]Study on Two-phase Flow Loop Test of High Concentration Backfill with Total Phosphorus Waste
Received date: 2018-07-25
Revised date: 2018-08-31
Online published: 2018-10-31
In order to obtain the variation trend of frictional resistance in different concentration phospho-gypsum backfill slurry,the flow performance of the slurry was studied by shear rheological experiment and loop test.The results show that the frictional resistance of phosphogypsum backfill slurry increases multistep with the increase of concentration,and the higher the concentration,the faster the resistance increases.The research results show that under the condition of existing filling pipe network and filling ratio,displacement volume is less than 190 m3/h,frictional resistance change little with concentration of 50%~54%.Therefore,backfill slurry concentration can be raised to 54% for pipeline transportation,at this point the pipeline frictional resistance is around 0.2 kPa/m.In view of the complexity of mine backfill pipeline,the total resistance of transported backfill slurry will be increased,so the design of mine backfill system should make allowances for additional resistance due to the bend pipeline and slope.
Bing LIU , Xibing LI . Study on Two-phase Flow Loop Test of High Concentration Backfill with Total Phosphorus Waste[J]. Gold Science and Technology, 2018 , 26(5) : 615 -621 . DOI: 10.11872/j.issn.1005-2518.2018.05.615
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