SAG mill power draw models are used in mill design and grinding circuit modeling to predict how much power will be consumed by a particular mill geometry and operating configuration. This paper will compare sAG mill models by Morrell, Loveday (using ‘Power Numbers’ published by Barratt) and Austin a...
High Pressure Grinding Roll (HPGr) technology has been accepted as an energy efficient alternative to conventional comminution circuits in the mining industry. There are, however, aspects of this technology that can be improved to enhance efficiency. Edge effect is a common problem associated with H...
The concern regarding grinding media consumption rates is as old as the invention of the tumbling mill. Over the years many materials and grinding media shapes have been tested. Through all this, steel grinding balls have proved to be the most effective media for comminu...
The Institute of Mineral Processing at the Montanuniversitaet Leoben in cooperation with the company CEMTEC has developed a pilot scale, 200mm table diameter, vertical roller mill for energy controlled laboratory tests. The mill provides the technical options to vary process par...
After years of research and development, Sandvik Mining introduces a new crusher to breakthrough traditional crushing concept. The new machine, VibroconeTM, is able to crush and grind particles with a high reduction rate, i.e., at least two times than conventional cone crush...
The concern regarding grinding media consumption rates is as old as the invention of the tumbling mill. Over the years many materials and grinding media shapes have been tested. Through all this, steel grinding balls have proved to be the most effective media for comminution in tumbling...
In particle bed comminution energy is dissipated by several microprocesses which accompany the flow of particles, their compaction, and breakage. It is unknown which amount of energy is consumed by which microprocess and what the ratios are between the energies dissipated by...
The need to reduce energy consumption and to achieve improved product quality has seen major shifts from the usual conservative approach in circuit design to more modern comminution circuits. Although comminution circuits have been advancing classification has remained a ke...
Abstract. In particle bed comminution energy is dissipated by several microprocesses which accompany the flow of particles, their compaction, and breakage. It is unknown which amount of energy is consumed by which microprocess and what the ratios are between the energies dissipated by the single mic...
The need to reduce energy consumption and to achieve improved product quality has seen major shifts from the usual conservative approach in circuit design to more modern comminution circuits. Although comminution circuits have been advancing classification has remained a key component...
I’m pleased to report that Prof Alban Lynch has been chosen by the college of voters around the world as the 2013 inductee for the Comminution category of the International Mining Technology Hall of Fame. Congratulations Prof Lynch! CEEC is proud to have nominated you for this award.
Ian Smith, Managing Director and CEO, CEEC Sposnor Orica Ltd addressed 500 guests at Melbourne Celebrates Mining dinner on 30 October 2013 on the theme of innovation excerpts from Smith's speech follow:
"Innovation is the application of better solutions that meet new requirements or existing mark...
The November 2013 issue of Materials World, the member magazine of the Institute of Materials, Minerals and Mining. has a key feature on eco-efficent comminution. Journalist Guy Richards quotes global industry leaders in his profile of Eco-efficient comminution.
Crushing victories - comminution...
2014 CEEC Medal Applications Now Open
Elizabeth Lewis-Gray, Chairman of CEEC (Coalition for Energy Efficient Comminution) International Ltd today announced the opening of applications for the 2014 CEEC Medal. The CEEC Medal recognises and celebrates the contribution of outstanding published papers,...
On behalf of the Pope, Cardinal Tarcisio Bertone, Secretary of State, welcomed mining industry leaders to the Vatican on 7th September. The occasion was the Pontifical Council for Justice and Peace’s Day of Reflection on environmental and social questions relevant to the mining industry. The day was...
[caption id="attachment_2580" align="aligncenter" width="700"] L-R: Owen Hegarty, CEEC Patron; Sandy Gray Gekko Systems and Joe Cucuzza AMIRA prepare to address the delegates at Mines and Money Melbourne 2013.[/caption]
CEEC Patron Owen Hegarty, AMIRA's Joe Cucuzza and Gekko Systems's Sandy Gray...
[caption id="attachment_2573" align="aligncenter" width="700"] Queensland Premier Campbell Newman congratulates representatives of the Metso PTI team. Left to right: Kristy- Ann Duffy (Mineral Process Engineer), Walter Valery (Senior Vice President - Global), Premier Campbell Newman, David La Rosa (...
[caption id="attachment_2384" align="aligncenter" width="700"] The CEEC Medal[/caption]
[caption id="attachment_2373" align="aligncenter" width="700"] Winning Authors: L-R Klein, Wang Nadolski, Drozdiak (NB O Mejia absent)[/caption]
[caption id="attachment_2381" align="aligncenter" w...
JKTech has been recognised as a global provider of innovative technologies to the international resources industry, by taking out the coveted Minerals and Energy Award announced at The Premier of Queensland’s Export Award in Brisbane last night on 24thOctober. The Minerals and Energy Award is...
CIM's October 2013 Magazine published an excellent feature addressing comminution. The report quotes operators, service providers and equipment manufacturers as well as CEEC Director Joe Pease (CEO Xstrata Technology).
[caption id="attachment_1281" align="alignleft" width="247"] CEEC Di...
Download details here: CallforNominationsCEECBoard
Nomination & Expression of Interest – CEEC Board
Please be advised that the Annual General Meeting for CEEC International Ltd (CEEC) will be held on Thursday, 21st November, 2013, at 5.00 p.m. (AEDT).
In accordance with the Cons...
The 2013 CEEC Medal presentation on October 11th drew many from North America: here are pictures some of our guests.
[caption id="attachment_2466" align="aligncenter" width="700"] Sandy Gray from Gekko Systems chatting with Andy Maclean and Gavin Ritson (Hatch)[/caption]
The 2013 CEEC Medallists were recognised at a " by invitation only" industry event hosted by Ausenco at their Vancouver offices. Ed Meka, Ausenco's President, Minerals and Metals, Americas welcomed the assembled guests, before introducing CEEC Chair, Elizabeth Lewis-Gray who gave an overview of C...
Attending Procemin 2013?
Make sure you register for the course being run by Alex Doll, Comminution Consultant, Canada, and Peter Amelunxen, Aminpro Chile.
The course is for engineers with intermediate or advanced understanding of grinding circuits:
EPCM engineers who will be designing and...
[caption id="attachment_2293" align="alignleft" width="300"] Kyle Bartholomew Metcom Technologies; Mike Daniel CMD Consulting; Bill Johnson,[/caption]
[caption id="attachment_2278" align="alignright" width="300"] Lt: Tom Hunter Outotec Rt Sandy Gray Gekko Systems[/caption]
[caption id="attachment_2320" align="alignleft" width="300"] Elizabeth Lewis-Gray Gekko and Wayne McFaull Newmont meet special guest Mark Morcombe AngloGold Ashanti[/caption]
[caption id="attachment_2317" align="alignright" width="300"] CEEC Directors: Mike Daniel, Sarah Boucaut (EO) Mike Batters...
CEEC sponsors and supporters joined CEEC's Board to hear CEEC Chair Elizabeth Lewis-Gray interview Mark Morcombe SVP, AngloGold Ashanti on the challenges and opportunties for energy efficiency in comminution at AGA's Obuasi mine. Located in Ghana, the mine has been operating since 1897, and was acqu...
International Mining Hall of Fame nominations have now closed: details will be published in the November 2013 issue of International Mining. CEEC's founding Chair Elizabeth Lewis-Gray and co-director Joe Pease are nominated in the Comminution section, along with CEEC sponsor RME's John Russell.
Mine-to-mill studies have previously demonstrated downstream productivity benefits from relatively modest increases in blast energy, or powder factor. These increases have up to now been limited by safety and environmental constraints, since excessive blast energy can r...
Classification system efficiency (CSE) is a simple, powerful metric that provides a comprehensive measure of classification system performance. CSE directly quantifies the amount of coarse solids in the mill, and as a result, also directly quantifies the percentage of m...
Honourable Bill Bennett, Minister of Energy and Mines will join present as keynote for the first installment of the 2013/14 AME BC Speaker Series with an update on current issues in the mineral exploration and development industry including taxation, permitting and environmental assessment, Aborigi...
[caption id="attachment_2236" align="aligncenter" width="700"] CEEC Director Dr Mike Daniel (Rt) and CEEC Advocate Levi Guzman (Lt) meet with colleagues in Peru in August 2013[/caption]
Founding CEEC Director Dr Mike Daniel met one of CEEC's South American advocates Levi Guzman recently while in...
The IMPC 2014 is expected to gather over 1,000 professionals and academics from the mining industry representing approximately 60 countries. Top universities specialising in mineral processing,all major mining companies, plus the leading providers in the world of services and technologies will att...
12 case studies show sustained improvement of 15% - 48% throughput over last 10 years at sites including Mt Rawdon, Henty, Kambalda, Sepon Gold and more, reports Orway Mineral Consultants.
Table 1 below is taken from Orway Mineral Consultants (WA) Pty Ltd white paper recently published. It provid...
Orway Mineral Consultants (OMC) is a Perth and Toronto based metallurgical consultancy established in 1983, with a reputation for the delivery of high quality studies and practical engineered solutions in the areas of comminution, beneficiation and hydrometallurgy. OMC optimise and au...
Powerful x-rays can now be used to rapidly and accurately detect gold in ore samples, thanks to a new technique developed by CSIRO – a move that could save Australia’s minerals industry hundreds of millions of dollars each year.
Working with Canadian company Mevex, CSIRO has conducted a pilot stu...
Understanding mill charge motion is important. In the charge, the centre of gravity is shifted from the rotational centre of the mill system, and its motion is induced by rotation of the mill, while at the same time the charge creates a torque into the mill system. Breakage of...
There are many different machine setup parameters and variables that affect the production of cone crushers in a mineral processing plant. One of these variables is the eccentric speed at which the cone gyrates. In June 2012, pilot tests were conducted on a 200 hp high speed cone crusher t...
In recent years there have been significant advances in computing power and programming technology, enabling more complicated processes to be modelled in greater detail. This has led to increased understanding of these complex processes, including mineral processing circuits....
The current paper looks at evaluating the merits of large geared mills versus gearless driven mills by evaluating the following factors:
The capability of currently available systems in terms of power and mill diameter
Efficiency in terms of overall electrical power consu...
There are many different machine setup parameters and variables that affect the production of cone crushers in a mineral processing plant. One of these variables is the eccentric speed at which the cone gyrates. In June 2012, pilot tests were conducted on a 200 hp high speed co...
Review OSIsoft’s library of user case studies which includes issues related to energy monitoring and management. One such example is the paper on Smart monitoring of cement plants for energy efficiency.
The problem of setting the proper controls and/or having several objectives to be met in the implementation of grinding control strategies can be resolved. The design and implementation of a distributed control system for safe operation of a grinding circuit while maximising profit is presented. An...
From Author: Clara Ferreira-Marques (Reuters)
Posted: Thursday , 22 Aug 2013
LONDON (REUTERS) -
After extensive cost cuts in a bid to woo investors, the low hanging fruit has been plucked, but more is needed if the major producers are to recover fully.
Mining firms are wooing investors with...
Harmony repositions itself for the future
Published on 14 August 2013
Best annual lost time injury frequency rate ever
7% year-on-year increase in underground grade
Major reductions in costs and capital
Headline profit per share* of 47 SA cents (5 US cents) for financial year 2...
Over the next three decades, world energy consumption is projected to increase by 56 percent, driven by growth in the developing world, according to International Energy Outlook 2013 (IEO2013), released on July 25th by the U.S. Energy Information Administration (EIA).
"Rising prosperity in China...
A new report from ClimateWorks Australia finds increased industrial energy efficiency.
The most effective corporate practices for improving energy efficiency were found to be
regular analysis of energy data,
inclusion of energy management considerations in operational guidelines, and
In the past 20 years, the energy-efficient comminution technologies, including high pressure grinding rolls (HPGR) and high speed stirred mill, have been developed and adopted in the hard-rock mining operation in order to reduce the energy consumption and improve the process performance. T...
Newcrest Mining has teamed with the University of Tasmania (UTAS) to build a $3 million extension to a minerals research laboratory.
The gold miner has contributed $2.5 million for the extension at the Australian Research Council Centre of Excellence in Ore Deposits (CODES), with UTAS and the ARC...
AMIRA International responds to industry call for energy efficiency benchmark
Escalating energy prices, lower ore grades and higher labour costs are taking a heavy toll on the mining industry particularly copper and gold producers. Innovation in mining is the common theme of all industr...