ABSTRACT
In 2012, a single module heavy medium cyclone plant (HMP) was installed at the Glencore Zinc’s (then Xstrata Zinc) McArthur River lead zinc mine. The HMP formed the first part of the MRM Phase 3 Project to increase run of mine (ROM) capacity from 2.4 to 5.5 Mt/a.
The purpose of the HMP...
17-Feb-2016
ABSTRACT
Over the 2012 to 2014 period, Anglo American Platinum (AAP) has been investigating the application of ore upgrading using XRF sensor technology sourced from Rados International, at Mintek South Africa. This has been in parallel with a more comprehensive sensor sorting investigation at th...
13-Feb-2016
Abstract
As high grade ore deposits are depleted, remaining deposits are generally lower grade and require the mining and processing of larger volumes of material per tonne of product. These low grade deposits often contain a large proportion of barren gangue. Pre-concentration aims to remove this...
26-Nov-2015
ABSTRACT
The benefits of pre-concentration using sensor-based sorting have been widely reported with the greatest potential impacts on low grade and high tonnage operations such those mining copper porphyry deposits. Due to the non-selective nature of bulk surface mining methods, significant quan...
25-Nov-2015
ABSTRACT
Geoscan (using PGNAA) is used for multi-elemental analysis of conveyed bulk materials in real time measuring continuously through the full bed depth, and unaffected by belt speed, particle size, layering and dust levels. Tonnage weighted results are used to monitor quality, divert increm...
25-Nov-2015
Abstract
In addition to minerals displaying variations in grade within an ore body, blasted rock often concentrates particular minerals preferentially into finer size fractions. Grade engineering strategies seek to exploit intrinsic heterogeneity and grade variability to improve the viability of op...
15-Nov-2015
Abstract
The UG2 ore in South Africa is exploited for its enrichment in the platinum group minerals (PGMs). Given that the PGMs are typically very fine grained, the potential for poor liberation is high, especially with conventional cyclones providing a poor split of the coarse silicates and fine c...
15-Jul-2015
Abstract
The JKMRC has recently reported a novel ore pre-concentration method using high voltage electrical pulses (Part 1 of this paper). The technique utilises metalliferous grain-induced selective breakage under a controlled pulse energy input, and size-based screening to separate the feed ore i...
15-Jul-2015
Abstract
A novel ore pre-concentration technique using high voltage pulses is proposed in this study. The technique utilises metalliferous grain-induced selective breakage, under a controlled pulse energy loading, and size-based screening to separate the feed ore into body breakage and surface brea...
14-Jul-2015
Abstract
There is increasing demand to optimise yield and increase capacity of crushing plants. Research in this area has resulted in the development of numerous optimisation tools, and recent research has shown that the quality aspects of production have great influence on the optimisation results...
12-Jun-2015
ABSTRACT
Pre-concentration of precious metal and base metal ore types is becoming more relevant with the discovery, development and operation of many lower grade deposits around the world. The fluctuations in metal prices expose many mines to risks especially dealing with low and variable ore gr...
02-Jun-2015
New Gold Inc.’s New Afton concentrator commenced operation in June 2012, producing a copper-gold-silver concentrate. During the first two years of operation, various optimization efforts have improved mill throughput, recoveries and concentrate grade. Daily mill throughput has increased 20% above th...
03-Apr-2015
Developments in ore sorting technologies have provided the ability to achieve economic dry pre-concentration of ores prior to a grinding/concentration circuit and, in some cases, produce a high grade concentrate of sufficient quality for end use. The use of dual X-ray transmission (XRT) sorting has...
16-Mar-2015
Although ore sorting in mining is not a new concept, sensor-based sorting has failed to gain broad acceptance due to perceived challenges with the technology. In order to gain wider applications, this research focuses on treating waste rock and low-grade ore to identify and test appropriate sensors...
13-Mar-2015
Abstract
Ore sorting technology represents a step-change improvement in eco-efficient comminution strategies. Sorting equipment offers the benefit of greatly reducing the comminution energy required per tonne of mineral processed by identifying stones that contain ore and separating them from sto...
02-Oct-2014
Ore blending for process optimization is becoming an increasing factor for managing cost and productivity. Economic mining and processing a very low value ore in an extremely competitive market results in constant cost-cutting initiatives. The inherent conflict between the lowest possible mining cos...
02-Jan-2004