FIELD: devices for hydraulic borehole mining. SUBSTANCE: device includes standpipe with channels for supply of water and pulp lifting, jet nozzles, jet pump and suction chamber with ports in form of longitudinal slots. Installed on connectors between slots are pointed pins and additional jet nozzles are installed on lower end of standpipe. EFFECT: higher efficiency. 3 dwg
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Authors
Dates
1998-05-20—Published
1995-04-03—Filed