Vibrant Roadheader Test Report – Brandspruit Colliery
R1500,00
Description
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Beneficiation of weathered ultra-fine discard with an advanced High internal phase water-in-oil technique
2022
Laboratory flotation test work on five weathered discard samples, comparing an emulsion binder with kerosene and optimising dosage and agitation speed. For plants looking at fine discard dumps.
What this report foundA high internal phase water in oil emulsion binder upgraded weathered ultra fine coal discard.
R1500,00
A high internal phase water in oil emulsion binder upgraded weathered ultra fine coal discard. At 5 kg/ton on a feed of 29.34 per cent ash and 20.94 MJ/kg, flotation gave a clean coal of 11.76 per cent ash and 28.61 MJ/kg at 15.61 per cent mass yield. Calorific value rose with agitation speed and fell with binder dosage.
Mapping of Old Bords and Pillars Revisited
2019
Desktop review of recent unmanned aerial and underwater vehicle systems and how they compare with borehole scanning, for engineers assessing the stability of old underground workings.
What this report foundMapping abandoned, inaccessible bord and pillar workings comes down to two options: borehole deployed laser or sonar scanning, or sensors carried in by...
R1500,00
Mapping abandoned, inaccessible bord and pillar workings comes down to two options: borehole deployed laser or sonar scanning, or sensors carried in by unmanned vehicles. Drone mounted laser scanning for air filled voids and sonar carried by small submersibles for flooded workings were judged the most promising, but intrinsic safety, deployment and the risk of losing equipment still favour borehole methods for occasional use.
Real-time Plant Efficiency Measurement
2002
Assessment of the measurement and control equipment available to coal preparation plants, with recommendations for plant metallurgists on which instruments to add first.
What this report foundNo single method gives a continuous, real time report on how a coal preparation plant is performing.
R1500,00
200230 pages
No single method gives a continuous, real time report on how a coal preparation plant is performing. Mass meters converted to yield values, on-line ash and moisture monitors, load cell chutes and automatic medium density control together supply most of what is needed. Measuring discard and slimes tonnages, particularly slimes disposal, remains the weakest point in plant accounting.