BHP Board update andBHP and Rio Tinto to collaborate on new tailings technology

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Overig advies 31/10/2022 06:25

BHP Group Limited (BHP) announced today that John Mogford has retired as a non-executive director effective 31 October 2022. Mr Mogford has been a Director of BHP since October 2017 and is an oil and gas expert.

As previously announced on 19 May 2022, Mr Mogford confirmed his decision to retire following the completion of the divestment of BHP’s oil and Gas assets through the merger with Woodside. BHP Chair, Mr MacKenzie said “I would like to thank John for his outstanding contribution to the Board and to value creation for BHP shareholders. I wish John all the best for the future.”

As previously announced, Malcolm Broomhead will retire at the end of the BHP Annual General Meeting on Thursday, 10 November 2022.

BHP and Rio Tinto to collaborate on new tailings technology
Global miners BHP and Rio Tinto have formed a partnership agreement to accelerate the development of technology that could significantly increase water recovery from mine tailings, and in turn reduce potential safety risks and environmental footprints associated with tailings storage facilities.

The first project will involve testing the application of an innovative large-volume filter unit at a BHP copper mine in Chile, which would remove up to 80% of the water in the tailings stream before it is deposited in a storage facility.

Rio Tinto will bring its experience from implementing smaller-scale tailings filters for bauxite residues at alumina refineries since 2005. Both organisations will work in collaboration with leading technology and equipment providers, technical experts, research groups and the academic sector.

Manufacture of the filter unit is already underway. The pilot construction is due to begin in early 2023 and operations are scheduled to commence in early 2024. The pilot will test the potential of a large-scale tailings filter unit for scalability and cost-effectiveness across global mining operations.

Removing more water from tailings would reduce potential risks associated with moisture in storage facilities, reduce the footprint required by such facilities, and create opportunities to productively re-use tailings, for example as raw material for glass, construction or agriculture industries.

The additional water recovered from tailings by filtration could be re-used in processing facilities, reducing overall water consumption.

BHP Chief Technical Officer, Laura Tyler, said: “The world will need more critical minerals in the decades to come to support economic development and decarbonisation pathways. It is important that we keep working together across the global mining sector to raise standards and make sure our operations are as safe and sustainable as they can be. Responsible management of tailings and improved water use is a big part of that.”

Rio Tinto Chief Technical Officer, Mark Davies, said: “It is in everyone’s interest that we, as an industry, find safer and more sustainable ways to manage tailings. As two of the leading companies in the sector, we want to bring our combined knowledge and expertise to address this challenge.”

Tailings usually takes the form of a liquid slurry made of fine metal or mineral particles and water – created when mined ore is crushed and finely ground in a milling process to enable the metals and minerals of interest to be extracted.



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