Pre-treatment Through Neutralisation/Gypsum Crystallisation For Partial Sulphate Removal
by A J Geldenhuys, J P Maree & CSIR, Environmentek | September 2001
R1500,00
Description
Related Products
Upgrading of coal fines with a Centrifugal Concentrator
Bench and pilot testing of four centrifugal concentrator models on fine coal from two collieries, with operating variables that resisted correlation flagged for further work. For plant metallurgists.
What this report foundFour centrifugal concentrators all cut ash in fine coal, with desliming the decisive step.
R1500,00
Four centrifugal concentrators all cut ash in fine coal, with desliming the decisive step. The best unit took ash from 35.2% to 18.47% and sulphur from 0.68% to 0.36% in a single stage, raising calorific value from 23.78 to 26.16 MJ/kg. Pilot work reached 19% ash on thickener underflow and reconstituted spiral feed.
Demonstrate the efficiency of UAV-GPR for assessment of rehabilitation sites and detection of subsurface cavities
2023
Field trials at two South African collieries comparing drone mounted ground penetrating radar against ground based surveys, for measuring rehabilitation soil thickness and locating shallow voids. For rehabilitation teams.
What this report foundGround based radar mapped rehabilitation soil profiles well enough to replace much of the auger sampling normally needed, and a 100 MHz system picked out...
R1500,00
Ground based radar mapped rehabilitation soil profiles well enough to replace much of the auger sampling normally needed, and a 100 MHz system picked out anomalies at about 5 to 6 m depth that were likely old mining voids and related subsidence. Penetration below roughly 6 m needs lower frequencies, which cost resolution and require larger antennas.