https://www.miningweekly.com

Receive our free daily newsletter:

Alumina

Alumina is aluminium oxide (Al₂O₃), a white crystalline powder that serves as the principal feedstock for primary aluminium production. It is refined from bauxite ore through the Bayer process, in which bauxite is digested in caustic soda at high temperature and pressure to dissolve the aluminium-bearing minerals, leaving behind iron-rich red mud residue. The resulting aluminium hydroxide is then calcined to produce alumina. Approximately two tonnes of alumina are required to produce one tonne of primary aluminium metal via the Hall–Héroult electrolytic smelting process. Beyond its dominant role in aluminium production, alumina is also used in ceramics, refractories, abrasives, catalysts and polishing compounds owing to its hardness and chemical stability. Global alumina production is concentrated in countries with large bauxite reserves, including Australia, China, Brazil and Guinea, as well as in regions with access to low-cost energy for refining. The alumina market is closely linked to aluminium demand from the automotive, construction, packaging and aerospace sectors. Bauxite residue, or red mud, generated during refining presents environmental and storage challenges, prompting research into tailings reprocessing and recovery of by-products such as rare earth elements, gallium and scandium. Alumina refining is energy-intensive and a significant contributor to the carbon footprint of the aluminium value chain, driving interest in lower-emission refining technologies and circular economy approaches.

Alumina News


AnorTech's Gronne Bjerg aluminum calcium silicate (anorthosite) project in Greenland
Anorthosite developer partners with Canadian research body to advance carbon capture tech
Updated 6 hours ago By: Creamer Media Reporter

TSX-V-listed AnorTech, which is pioneering the next generation of sustainable materials from anorthosite, has announced it will collaborate with the National Research Council of Canada (NRC) to... 


Alumina 'red mud' tailings site in Louisiana
Colorado School of Mines, ElementUSA awarded US gov funding to recover rare earths from alumina tailings
3rd June 2026 By: Marleny Arnoldi

Research university Colorado School of Mines and mid-stream minerals processing company ElementUSA have been awarded $67-million in funding from the US Department of Energy (DoE) to build a plant... 


A bauxite mine in Guinea
Chalco agrees to build alumina plant in Guinea for $1bn
22nd May 2026 By: Bloomberg

Aluminum Corp of China, the country’s largest State-owned producer of the lightweight metal, has agreed to invest $1-billion in an alumina plant in Guinea to tap local bauxite resources. Chalco, as... 


Gallium
Gallium metal research and development project, Canada
22nd May 2026 By: Sheila Barradas

Rio Tinto is advancing a research and development project to extract primary gallium from its alumina refining process. 


Bauxite ore in hand
Brazilian Rare Earths announces newco spinout to manage bauxite project
19th May 2026 By: Marleny Arnoldi

ASX-listed Brazilian Rare Earths (BRE) has announced plans to demerge its 100%-owned Amargosa bauxite/gallium project in Brazil, into a newly formed ASX-listed company called Alurion Resources.... 


Location map of the Minim Martap project
Minim Martap bauxite project, Cameroon – update
15th May 2026 By: Sheila Barradas

Canyon Resources has further strengthened the logistics platform. 


A Minim Martap
Canyon shores up rail, port influence for Cameroon project
8th May 2026 By: Tasneem Bulbulia

ASX-listed Canyon Resources’ in-country subsidiary Camalco Cameroon has increased its equity holding in Camrail from 9.1% to 26.9% through a cash consideration of about A$23.8-million, representing... 


South32's Cannington mine
South32 lowers full-year manganese guidance by 6%
22nd April 2026 By: Reuters

Diversified miner South32 lowered its full‑year forecast on April 22 for its Australia Manganese unit after wet-season rainfall and Tropical Cyclone Narelle disrupted operations. The company also... 


Canyon CEO resigns
13th April 2026 By: Tasneem Bulbulia

Peter Secker has tendered his resignation as CEO of ASX-listed Canyon Resources CEO, citing personal reasons. He will, however, remain in his role over the coming months to lead Canyon through the... 


Location map of the Minim Martap project
Minim Martap bauxite project, Cameroon – update
27th March 2026 By: Sheila Barradas

The surface miner has been mobilised to site and mining operations are scheduled to start before the end of March.  


Boyne smelter
A$2bn deal to secure Boyne aluminium smelter, boost energy transition
25th March 2026 By: Mariaan Webb

Rio Tinto, the Queensland government and the Australian federal government have announced a A$2-billion partnership to secure the long-term future of the Boyne aluminium smelter in Gladstone, while... 


Location map of the Minim Martap project
Minim Martap bauxite project, Cameroon – update
20th March 2026 By: Sheila Barradas

Canyon Resources has reported that a surface miner has been mobilised to the project, with mining expected to start before the end of March. 


Canyon’s Cameroon bauxite project on track for first production
Canyon’s Cameroon bauxite project on track for first production
11th March 2026 By: Sabrina Jardim

ASX-listed Canyon Resources has reported that a surface miner has now been mobilised to site at its Minim Martap bauxite project, in Cameroon, with mining operations scheduled to begin before the... 


Rio Tinto to build pilot gallium plant in Quebec
5th March 2026 By: Mariaan Webb

Mining major Rio Tinto is advancing a research and development project to extract gallium from its alumina refining process in Quebec, supported by funding from the Canadian government. The... 


Aluminium hits highest since 2022 as Alba declares force majeure
Aluminium hits highest since 2022 as Alba declares force majeure
5th March 2026 By: Bloomberg

Aluminum prices surged to the highest since 2022 after Aluminium Bahrain suspended deliveries of metal to some customers under so-called force majeure clauses in its supply contracts. The company,... 


Nigeria, AFC sign $1.3bn deal to build alumina refinery
2nd March 2026 By: Reuters

Nigeria has signed a $1.3-billion investment deal with Africa Finance Corporation (AFC) to build an alumina refinery and fund nationwide mineral exploration, the government said late on Sunday, in... 


Location map of the Minim Martap project
Minim Martap bauxite project, Cameroon – update
13th February 2026 By: Sheila Barradas

Canyon Resources has reported that the project is advancing to the mining phase, with commissioning of the surface miner scheduled for February 2026 as a key operational milestone. 


The Mozal smelter
Australia's South32 confirms Mozambique plant wind-down after profit beat
12th February 2026 By: Reuters

Australian diversified miner South32 reaffirmed it would put its Mozambique aluminium plant on care and maintenance next month after a drought hit power supply, as it posted a higher first-half... 


Canyon Resources targets first mining at Minim Martap early this year
6th February 2026 By: Darren Parker

ASX-listed Canyon Resources has said its Minim Martap bauxite project, in Cameroon, is transitioning into the mining phase, with commissioning of the surface miner scheduled for February, while... 


Rio Tinto CEO Simon Trott
Rio Tinto leans on copper as Pilbara steadies after earlier storms
6th February 2026 By: Mariaan Webb

Diversified miner Rio Tinto reported robust production results for 2025, highlighted by an 8% year-on-year increase in copper-equivalent output. The strong performance was driven by the company’s... 


1
2

Option 1 (equivalent of R125 a month):

Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format

Option 2 (equivalent of R375 a month):

All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.

Already a subscriber?

Forgotten your password?

MAGAZINE & ONLINE

SUBSCRIBE

RESEARCH CHANNEL AFRICA

SUBSCRIBE

CORPORATE PACKAGES

CLICK FOR A QUOTATION







pqt: 0.106s - ct: 0.166s - 275pq - 2rq
Subscribe Now