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UNDP | Procurement Notices - 97820 - International Consultant

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UNDP | Procurement Notices - 97821 - International Consultant -Hydrog

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UNDP | Procurement Notices - 97822 - International Consultant The HDM

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"Modelling of Bulk Material Flow Properties" by Edward Paul Alexander

Flow property testing is important in the design of handling equipment for bulk solids and the Jenike shear tester is a common and reliable method for ensuring flow from hoppers under the force of gravity alone. The Jenike shear test procedure has various stages and is known to have issues with operator dependency, questions have also been raised regarding the stress state within the shear cell.
Currently the data for high pressure flow functions, which are applicable to large capacity storage facilities, are extrapolated from low pressure test data using a 3-parameter equation. Very little literature is provided to support the use of the 3-parameter equation and most shear testing devices are limited to major consolidation stresses of 100 kPa. ....

Flow Properties , Onsolidation Pressure , Numerical Modelling , Hear Testing ,

Improving Hard Rock Fragmentation in Copper Open Pit Mine Sites

In open-pit mining operations, a larger energy consumption comprises the comminution processes. Therefore, blasting operations for rock fragmentation contribute to improving comminution efficiency, particularly in hard rock mines. Several factors control rock fragmentation pertaining to blasting and ....

Chinmay Charioct , Laura Thomson , Lulea University Of Technology , Southern African Institute Of Mining , International Society Of Explosives Engineers , Fragmentation Optimization , Optimization Modeling , Numerical Modelling , Blasting Fragmentation Optimization , Graduate Theses , Fragmentation Data , Gold Mines , International Society , Explosives Engineers , Boliden Mineral , Aitik Operation , Lulea University , Tarkwa Gold Mine , Southern African Institute , Hard Rock Fragmentation , Opper Open Pit Mine ,