The Central African copper belt is one of the world’s most important copper producing districts, with dozens of deposits spanning a 400km length through the Democratic Republic of Congo and northern Zambia. Of these copper deposits, a select few contain significant quantities of cobalt, which is produced as a by-product of the ore refining process.
In June 2016 a field trip was undertaken to Zambia in order to examine cobalt-rich ore from the copper belt. Dr Alex Webber, Research Fellow at the National Oceanography Centre at the University of Southampton and member of the COG3 Consortium reports from the field trip.
The world needs copper – we all need copper. It carries the electricity and hot water in our homes through cables and pipes. It is part of all the electrical appliances we use at home and in industry – an essential ingredient in any low-carbon economy. The sources and security of supply of copper are important in economic terms and of great interest for government policy and business strategy.
Every person in the UK uses around 8kg of copper per year. Worldwide usage exceeds 24 million tonnes annually and, whilst around 41% of European copper needs are met by recycling, the demands of growing economies like China and India mean that 75% of this usage is met by mined metal. Copper can’t be grown and simply recycling what we have already extracted won’t keep pace with demands.