In this paper, the authors undertake a critical review of the Starkey test and the publicly available information related to the test equipment, procedures, and scale-up methodology. The following recommendations are proposed to improve the test method:
1. The test should be conducted for a ﬁxe...
Newmont’s Phoenix mine started production in March of 2006. Due to the extreme hardness of the ore, the mill has struggled to meet throughput projections. Grinding studies showed that optimizing the existing circuit would not achieve budgeted throughput. These studies also showed that t...
Newmont’s Phoenix mine began gold production in 2006 and has since experienced difficulties in reaching design throughput due to variability in ore hardness. In 2010, a debottlenecking study was conducted, generating multiple options to increase throughput of the existing Phoen...
The keynote presentation at Comminution 2014 was delivered by prof Tim Napier-Munn, a founding CEEC director.
Prof Napier-Munn is a mineral engineer with degrees from Imperial College, London and the University of the Witwatersrand, Johannesburg. He has spent his +40-year career...
Measures taken by mining companies around the world to reduce their carbon footprints are becoming increasingly important in the sector securing its social licence to operate. The options for measures reduce to three categories of activity:
i) demand reduction by avoiding...
[caption id="attachment_3305" align="alignright" width="150"] Dr Fuerstenau[/caption]
This is the title of Dr. Douglas W. Fuerstenau's key note address at the International Minerals Engineering Congress, to be held in Mexico later this year. Dr Fuerstenau is the P. Malozemoff Professor Emeritus a...
[caption id="attachment_3432" align="aligncenter" width="599"] Mike Battersby and Tim Napier-Munn at Comminution 2014[/caption]
Thanks to all the sponsors for supporting Comminution 2014: a very well attended meeting.
Some of the delegates gather...
The Southern African Institute of Mining & Metallurgy Western Cape Branch presents: MINPROC 2014 7-8 August 2014
LORD CHARLES HOTEL, SOMERSET WEST
incorporating a Workshop on 6 August 2014: Opportunities to improve energy efficiency and processes
Submission of Conference Abstracts: 9...
Workshop on Life Cycle Assessment (LCA) for Mining, Mineral Processing and Metal Extraction and Power Generation
Life cycle assessment (LCA) is a key tool for all industries and businesses in the developed and developing world for the assessment of sustainability of processes and products, be it...
Energy benchmarking is widely applied across industries to determine the potential to improve energy performance. Unlike the many technologies for which energy benchmarks and efficiency rating systems are already in maturity, benchmarking of mining processes is still in its infancy. Benchm...
The Industrial Technologies Program (ITP) relies on analytical studies to identify large energy reduction opportunities in energy-intensive industries and uses these results to guide its R&D portfolio. The energy bandwidth illustrates the total energy-saving opportunity that e...
World Mining Congress 2013
Energy benchmarking is widely applied across industries to determine the potential to improve energy performance. Unlike the many technologies for which energy benchmarks and efficiency rating systems are already in maturity, benchmarking of mining processes...
The main purpose of geometallurgy is to improve the mine planning by mapping hardness and throughput into the mine block model using geostatistics to eliminate the large production fluctuations caused by the ore hardness variability coming from different parts of the pit. Ho...
Life cycle assessments of the mining and mineral processing of iron ore, bauxite and copper concentrate were carried out, focussing on embodied energy and greenhouse gas emissions. The results showed that loading and hauling make the largest contributions to the total gr...
The environmental proﬁle of gold production with regards to embodied energy, greenhouse gas emissions, embodied water and solid waste burden has been assessed using life cycle assessment methodology. Both refractory and non-refractory ores were considered, with cyanidati...
Secondary crushing often gets good press for its increases in energy efficiency and SAG milling rates but for a project considering this option the proposed benefits soon get overshadowed by implementation concerns. Reverse engineering from the published case studies is risky...
Excellence in Manufacturing Consortium (EMC) in partnership with Natural Resources Canada and the Canadian Industrial Program for Energy Conservation (CIPEC) is bringing together the country's leading energy subject-matter-experts, industry leaders and energy efficiency suppliers, to share best prac...
As previously reported, the Global Mining Standards Group now includes a working group developing standards for industrial comminution efficiency. The group gathered in Salt Lake City in February 2014 to define their goals and strategies.
1. The objective of their work is to f...
This topic was addressed by Milla Craig from Deloitte Canada's team at the Quebec Mines meeting in November 2013.
"While sustainability initiatives seek to provide solutions to the environmental and social impacts of the mining sector, one too often forgets (or ignores) the economic and financial...
JON ALLEN (METSO MINING AND CONSTRUCTION TECHNOLOGY) gave the Quebec Mines 2013 delegates Metso's view on mill design and applications, as well as an update on work with JKMRC.
"Rising energy costs, requirements to minimize energy consumption, and a commitment to sustainable solutions in the mine...
SGS's FRANÇOIS-OLIVIER VERRET presented the following summary on HPGR at the Quebec Mining meeting in November.
Several grindability tests were developed over the years to design grinding circuits or optimize existing operations. Each test has its own strengths and weak- nesses and purposes. It i...
MICHEL BRISSETTE AND JOHN STARKEY (STARKEY & ASSOCIATES) reported on the step change possible in comminution efficiency when comminution is coupled with an innovative technology at Quebec Mines 2013.
"In recent years, the mining industry has shifted toward mining orebodies with decreasing gra...
Another report from Quebec Mines conference, this time by GREG RASMUSSEN (XT)
IsaMill technology was developed from the stirred milling technology of Netzsch Feinmahltechnik GmbH in the 1990’s for use in the fine grained lead zinc ore bodies of Northern Australia in a drive to bring about a st...
The following Abstract was presented at Quebec Mines 2013. Innovation using new technology delivers measurable results.
Laser-induced breakdown spectroscopy (LIBS): A new tool for the mining industry
MOHAMAD SABSABI, PAUL BOUCHARD, FRANÇOIS DOUCET, LÜTFÜ ÖZCAN, ANDRÉ MOREAU, AISSA HARHIRA AND...
The Linear Wear Theory provides a reliable framework for the assessment of grinding media performance at full scale. This theory can be applied for analyzing grinding media consumption rates in any given grinding operation as well as the evaluation of alternative grinding med...
The premise: The mining industry must innovate if it is to meet the growing needs of the world. With an eye on international competition, all aspects of Québec’s mining cycle are affected, from exploration to mine site rehabilitation. In today’s open world, innovation is the product of research and...
CEEC is participating in Mines and Money Hong Kong, bringing the CEEC message of improved shareholder value from improved comminution strategies to hundreds of mining companies in a 270-booth exhibition.
[caption id="attachment_3188" align="aligncenter" width="700"] Lt- Rt Tom Hunter Outotec, Ek...
18 March 2014
Although the industry works in a competitive world, some challenges need to be faced together, writes Paul Dowd, Non-Executive Director, Oz Minerals.
It’s a well-known maxim in most industries that whatever competitive advantage one company thinks it may have at any poi...
The Functional Performance Equation for ball milling circuits provides plant staff with a new means to improve circuit performance. However, successful execution of a plant project, with verifiable circuit processing performance improvements, requires a significant number...
18 March 2014
If Australia is to remain a leading resources and energy exporter, our productivity and competitiveness must rise, writes Minister for Industry, the Honourable Ian Macfarlane.
Australia has long been a world leader in the resources and energy sector.
From exploration to development,...
The Phoenix secondary crusher installation has been successful with grinding energy consumption decreased significantly (15-20%) against a modest increase in crushing energy. Phoenix is a fascinating case study as the approach taken is different to what has typically been done and what is recommend...
CRC ORE aims to improve the productivity of mining operations by working with the industry to apply system-based analysis methods to increase unit metal productivity. This work has resulted in an integrated operational solution and system-value approach built around Grade Engineering®.
The energy efficiency debate in comminution is an ongoing one, with several different points of reference. A recent award winning paper by Wang et al 2013, adds to this debate by addressing process, energy and cost efficiency. The paper won the Coalition for Energy Efficient Comminution (...
The CEEC Medal celebrates and recognises the contribution of outstanding research and field work on beneficial strategies for eco-efficient comminution, as stated in CEEC’s Mission and Objective. The Medal is awarded annually to the author/s of the most outstanding published paper, article or case s...
CERAWeek is the energy industry’s preeminent gathering of industry leaders and government officials, offering new ideas, insight, and discussions on major strategic issues facing the global energy industry. 2014 marks the 33rd anniversary for the annual executive conference. 2,300+ senior energy exe...
A large gathering of industry executives from around the world sat down to dinner in the Grand Salon of the Grand America Hotel, Salt Lake City to witness the celebration of the first inductees into the International Mining Technology Hall of Fame (www.im-halloffame.com). Following a drinks receptio...
Mineral Processing and Extractive Metallurgy: 100 Years of Innovation presents more than a century of innovation drivers that have advanced the mineral processing industry. Trends, developments, and improvements are discussed in depth, and likely areas for future innovations are explored.
As part of its investigation into run-of-mine ore fragmentation, Highland Valley Copper discovered the role of primary crushing in the optimisation of mill feed size. Image analysis methods were used to quality the effect of feed size on mill throughput and showed the in-pit crushers to...
As part of its investigation into run-of-mine ore fragmentation, Highland Valley Copper discovered the role of primary crushing in the optimisation of mill feed size. Image analysis methods were used to quality the effect of feed size on mill throughput and showed the in-pit...
Mine to Mill Conference, Brisbane, Qld, October 1998
Highland Valley Copper recently implemented a system of measuring run-of-mine (ROM) ore properties and monitoring their effect on both mine and mill performance. These properties are principally ore hardness and size.
For some ye...
Michael MacFarlane, Mining Consultant and former Executive Vice President, Business Strategy and Innovation, AngloGold Ashanti contributed an excellent article to Dassault Systemes GEOVIA's Special Report on Mining Innovation. Mike discusses actions companies are taking to address investor confidenc...
CEEC's mission is to accelerate the transfer of knowledge, with the aim of this knowledge being the reduction in comminution, to improve the efficiency of mineral processing.
Innovation is defined as the art of introducing new ideas or methods; therefore adopting improved comminution processes r...
World Mining Congress 2013
This paper examines the development of several order of magnitude trade-off studies to evaluate the application of High Pressure Grinding Rolls (HPGR) technology in comparison to the SAG mill grinding technology. These studies were prepared by Wardrop Engine...
The Global Mining Standards and Guideline group (GMSG) formed a new working group called the Working Group on “A Standard for Industrial Comminution Efficiency” in 2013. The group is headed by CEEC advocate Robert E. McIvor, who has devoted his career to the design and improvement of the processing...
The team at Metcom Technologies have just released their latest Grinding Bulletin, describing "Work Index" and its correct application. Click here to see the February 2014 Grinding Bulletin.
Metcom is the world leader in training and knowledge transfer in mineral grinding circuits. They offer com...
CEEC's team is always on the look out for insight into ways accelerate the adoption of new technology, new flow sheets and improved results. the following article by Kay Sever resonated strongly: does it apply in your work place?
Early rockets were designed with two stages - one with the power to...
Stirred mill technology dates back to 1928 where the idea to use “an agitator and spherical grinding media” was presented. The year 1948 saw the successful application of Du Pont’s sandmill for pigment grinding. Subsequent years have led to the development of different types of s...
Presentation from CIM 2014. CIM 2014 - Ontario milling survey-4a
The Mining Association of Canada (MAC) has released its ninth annual Towards Sustainable Mining (TSM) Progress Report. The 2013 report takes a detailed look at MAC members' 2012 performance in the initiative's three focus areas - communities and people, environmental stewardship, and energy efficien...
[caption id="attachment_2921" align="aligncenter" width="685"] IM Technology Hall of Fame 2013. Comminution award to Prof Alban Lynch[/caption]