I
began the year by asking if the minerals industry will grow and prosper in 2012, as in 2011 the prices of most metals, apart from gold, had fallen by 20-25% of their values during the year. This year has seen a rise in the
price of all the major metals, apart from nickel, but rising production costs have tended to erode the benefits, and it is clear that there is a need to improve operations, by reducing energy costs and introducing innovative technology. This may explain why many of the major mineral processing conferences have seen record attendances during the year, researchers and operators coming together to discuss the burning issues of the day. The importance of networking has also been apparent by the rapid rise in members of MEI’s LinkedIn group,
Minerals Engineers, which reached 2000 members in January and 3000 by July. Membership now stands at over 3500.
The
SME Annual Meeting in February was held this year for the first time in Seattle. This is an event I have attended regularly since the late 80s, as it is one of the great meeting places. Together with its huge exhibition, it also has a multitude of technical sessions on all aspects of the minerals industry, in a bewildering array of parallel sessions, as well as various receptions, symposia, awards ceremonies, workshops etc.
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| At the exhibition with David Wiseman |
With an attendance of 5100 delegates, and 690 exhibition booths, this was roughly the same size as
last year’s event in Denver, which had one of the highest turnouts ever. I am please that I met for the first time
Prof. Maurice Fuerstenau, of the University of Nevada-Reno, who
sadly passed away later in the year . It was particular good to see
Dave Meadows of FLSmidth, who was a student of mine at Camborne, and graduated in 1985. Together with
Peter Amelunxen, of Aminpro, Chile, one of my
Minerals Engineering reviewers, they received the
Arthur Taggart Award for the paper that best represents a notable contribution to the science of mineral processing.
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Peter Amelunxen and Dave Meadows with
Courtney Young (centre) |
Next year the SME Meeting is in my favourite American city Denver, which gives Barbara and me the chance to do some skiing in the Rockies. We missed that this year, so in March spent a week in the Swiss town of
Zermatt, surely one of the world’s most beautiful areas, dominated by the views of the Matterhorn.
There was a record turnout at MEI’s
Comminution ’12 in Cape Town in April. This was the 8th in the series, and was attended by 253 delegates from 30 countries.
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| Early morning at the Vineyard Hotel Conference Centre |
I spoke of the quiet revolution which has been taking place since the end of the last century. Autogenous and semi-autogenous milling have become more prominent, and high-pressure grinding rolls are now playing an ever increasing role, as are stirred mills, the latter allowing the exploitation of ultra-fine grained ores which had hitherto been impossible to economically treat. This revolution continues, so that comminution circuits today are very much different to those of the mid-20th century with their parallel lines of small ball mill-cyclones. People are still very much aware of the energy consumed in comminution, but are now prepared to really do something about it. The papers presented at the conference, including the two keynotes, were of very high quality and we had a very full programme. However there was also time to relax in the evenings, which included a very entertaining and
informal dinner at the Gold Restaurant in the centre of Cape Town.
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| Dinner at the Gold Restaurant |
After 4 intensive days at the conference Barbara and I flew to Upington in the Northern Cape, from where we rented a car and drove 640 km to the
Fish River Canyon in Namibia. We spent four nights at the Fish River Lodge, perched directly on the southern rim of the Canyon, second only to the Grand Canyon in size. A notable difference to the latter was the almost complete lack of tourists in this remote region of Namibia, well away from the more popular northern tourist route.
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| Relaxing at Fish River Lodge, southern Namibia |
And then back to Falmouth, just in time to see our local conference venue, the Falmouth Beach Hotel, completely
destroyed by fire, and only 7 weeks out from our next conference. The fire brought to an end
13 years of conferences at this lovely venue, but we were fortunate to be able to transfer our bookings to the nearby St. Michaels’s Hotel, in time for
Biohydromet ’12 in mid-June.
It was another record attendance for this, the
6th MEI conference on biohydrometallurgy.
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| Biohydromet '12 delegates at Swanpool Beach, Falmouth |
It was sponsored by FLSmidth and ProMine, with media sponsorship by
International Mining, and attracted 81 delegates from 22 countries, 13 of these being from China.
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| With Chinese delegates at Biohydromet '12 |
There were 9 Chinese delegates at
Comminution ’12, and what is particularly encouraging is how young and vibrant these people are, and the number of females who are attending. They are a pleasure to work with and they are keen to network with western delegates. They have fresh ideas and both east and west can benefit from this interaction.
Biohydromet ’12 was a very enjoyable conference, which included a wonderful dinner at Cornwall’s iconic
Eden Project.
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| In the Eden Project Mediterranean biome |
I felt that the conference came at a time when rapid advances in our understanding of the science of microorganisms has in effect awoken biohydrometallurgy from its long slumber, and it now looks as though it might start to realise its true potential and provide real benefits to the minerals industry.
A few days after
Biohydromet ’12 Barbara and I took the car ferry from Plymouth to Santander in northern Spain, and then the short drive to the
Picos de Europa, one of Europe’s last mountain wilderness areas. It is a highly recommended walking area, many of the trails between the jagged peaks, in the deep canyons, and around the glacial lakes providing complete solitude and spectacular scenery.
Forty years ago I worked on the Nchanga copper mine in Zambia. In August, Barbara and I returned to Chingola for a nostalgic week
visiting the town and
the mine. And how things have changed; the once magnificent infrastructure of the Copperbelt has almost vanished, and what was once a pleasant drive from Lusaka to Chingola was now a gruelling 7 hours, mainly due to the awful state of the Copperbelt roads. Nevertheless it was a very enjoyable week, mainly due to the very friendly people that we met, not the least the very impressive Zambian metallurgists who spent a day with me on the concentrator and tailings leach plant.
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| Sulphide flotation and concentrate dewatering, West Mill |
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| With Tailings Leach Plant metallurgists |
In early September we had a welcome visit from
Tim Napier-Munn and his wife
Georgie, who were touring Europe. Tim co-edited the 7th Edition of
Mineral Processing Technology, and coincidentally on the day of his visit I received copies of the
Chinese translation of the book.
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| With Tim Napier-Munn |
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| With Jon and Amanda in New Delhi |
The main event of the year was the biennial
International Mineral Processing Congress (IMPC) which was held for the first time in India. MEI was a media sponsor, and Amanda, Jon and I were three of only 9 representatives from UK amongst the 1260 delegates from 45 countries, a sad reflection on the general state of mineral processing research in the UK.
The event was very well organised and it was evident that the IMPC had encouraged as many students as possible to attend the meeting. This is highly commendable, and it was really good to meet these young people at the MEI booth.
We were back in Cape Town in November for three MEI conferences. In introducing the first one,
Process Mineralogy ’12, I had the pleasure of presenting the inaugural
MEI Young Person’s Award to
Peter Amelunxen, of Aminpro, Chile.
Process Mineralogy ’12 was the second conference in this series, and despite the recent problems on the South African mines, attracted a record attendance of 123 delegates from 21 countries, and nine sponsors. How things have changed since my time in Zambia forty years ago, where we did not even have a microscope on the concentrator, despite the suite of economic copper minerals in the ore.
Now that ores have become more complex and refractory, knowledge of process mineralogy is essential on every mine, and the tools with which we analyse the behaviour of mineral assemblages have by need become increasingly sophisticated (and expensive!). Over the intensive three days of the conference, we had case studies from various operations, the emergence of new technologies, such as tomography, and the continued development of geometallurgy, the science of integrating geology and mineralogy with mineral processing and extraction.
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| Enjoying the sunshine at Process Mineralogy '12..... |
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| ...and the conference dinner in Cape Town |
During the weekend break Jon and I, and a few of the delegates, hiked to the top of
Lion’s Head, one of Cape Town’s most spectacular mountain walks.
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| Jon on the lower slopes of Lion's Head |
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| On the summit of Lion's Head |
Then it was back to the Vineyard Hotel for two commodity conferences running back to back.
Precious Metals ’12 was attended by 51 delegates representing 11 countries. Numbers were slightly down on previous years, mainly due to the violent wildcat strikes in the South African platinum mines, which led to killings and destruction of infrastructure, and only three delegates from the platinum sector were at the conference.
Two excellent keynote lectures highlighted the squeeze on the gold and PGM industries, and the conference brought together highly motivated delegates who discussed innovative technology which will bring economic benefits. There has been an 11% increase in gold production since 2004, but although the
gold price has risen markedly there has been a 155% increase in production costs since 2005, so the profit margins are not as high as many people might think. The same applies to PGM ores, where profit margins are extremely low despite high
platinum prices. This year has been particularly drastic, and many South African mines are now non-profitable, some running at high losses due to factors such as very high electricity costs, and frequent power cuts, as well as very high mining costs due to deep mining.
Precious Metals ’12 was followed by
Nickel Processing ’12, the 3rd in the series of what are MEI’s smallest conferences, but which always attract high quality delegates and papers. This year, 35 delegates representing 8 countries attended, and the first day concentrated on laterite processing and the innovative technologies that are being developed to attempt to address the current processing issues, including some that are in their early stages of development.
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| Nickel Processing '12 delegates |
After nine days of conferencing, it was good to relax for a week at Camp’s Bay, Cape Town’s most popular beach, before heading back to Falmouth to face the Cornish winter. While we had been away south-west England had experienced widespread flooding due to the torrential rain, and the train journey from Heathrow to Falmouth took one hour longer than the flight from Cape Town, as there were numerous detours due to the floods.
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| Relaxing in Camp's Bay...... |
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| ...then back to the flooded south-west England landscape |
And the rain is still incessant, making 2012 the wettest year on record. The rains have led to major travel disruptions, particularly here in the south-west, and cancellations of many important events. Luckily the two major events of the year, the magnificent London Olympics and Paralympics, escaped the worst of the weather. Due to our remote location, we enjoyed the Olympics on TV, both at home and in Chingola, but the sun shone on Falmouth when we saw the
Olympic flame pass through the town on its long journey from Land’s End in Cornwall to the Olympic stadium.
It has been another interesting year with MEI, and we now look forward to 2013. On behalf of all the ‘MEI family’ I wish you all a very happy New Year and we look forward to catching up with as many of you as possible during our travels around the world.
