Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Smart maths for greener mill design

19.09.2003


A webGF-Mill image showing the motion of particles adjacent to a lifter bar. Particle colouring indicates particle diameter; red indicating large particles and blue indicating small particles


A webGF-Mill image showing the motion of rocks and steel balls in a section along the length of a grinding mill. Particle colouring indicates particle speed with red being the fastest moving particles and blue the slowest or stationary particles.


CSIRO has developed an Internet-based simulation tool that predicts the motion of particles inside grinding mills, providing insight into the way mills work and enabling huge energy savings from smarter, more energy efficient design.

webGF-Mill assesses the design and function of the grinding mills used at mines to crush ore.

"Improving mill design is important because of the amount of energy that mills use," says CSIRO mathematician Dave Morton. "Typically, grinding mills are very inefficient. An average mill around 10 metres in diameter consumes roughly the energy required to supply 10 000 average Australian households. Unfortunately, only 5% of this energy is consumed by the processes that actually break the rocks inside the mill."



"As well as decreasing costs for mining companies, improving mill performance has the potential to significantly reduce global consumption of fossil fuels and thus provide important environmental benefits," he says.

webGF-Mill, uses sophisticated simulation techniques to predict the collective motion of large numbers of particles. These methods, developed by CSIRO mathematicians, provide tools for studying the flow of granular materials such as minerals, powders and cereals. Understanding the way that granules move helps companies develop efficient methods for production, processing and transport of these materials.

webGF-Mill is used to study three types of mills, the larger SAG (semi-autogenous grinding) and AG (autogenous grinding) mills, and the smaller ball mills.

As Australia is one of the world’s largest mineral producers, many mills are used at mine sites throughout Australia.

Typically, material is dug out of a mine as rocks up to 2m in size. Crushers break the rocks down to particles of around 200-300mm, which are then ground further in a SAG or AG mill. Oversized particles are then sent to ball mills for further crushing. Crushed material accepted from SAG, AG and ball mills is sent to flotation plants where valuable minerals are separated from the dirt for further processing.

webGF-Mill can be used to simulate a variety of different mill sizes, lifter geometries, ball and rock distributions, and fill levels.

For further information visit www.cmis.csiro.au/webgf

More information:

Dave Morton, mobile: 0407 257 281
Email: dave.morton@csiro.au
CSIRO Mathematical and Information Sciences
Media assistance :
Andrea Mettenmeyer, mobile: 0415 199 434
Email: andrea.mettenmeyer@csiro.au
CSIRO Mathematical and Information Sciences

Rosie Schmedding | CSIRO
Further information:
http://www.csiro.au/index.asp?type=mediaRelease&id=PrGFmill

More articles from Information Technology:

nachricht Powerful IT security for the car of the future – research alliance develops new approaches
25.05.2018 | Universität Ulm

nachricht Supercomputing the emergence of material behavior
18.05.2018 | University of Texas at Austin, Texas Advanced Computing Center

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>