Chinalco Guinea Alumina Plant Advances Local Bauxite Processing

Chinalco

Chinalco Guinea alumina plant construction has started in Boffa province, marking a major step in Guinea’s effort to move beyond bauxite exports and capture more value from domestic refining.

Chinalco Guinea alumina plant is designed to produce 1.2mn t/yr and is scheduled to start operations in 2029 after a 36-month construction period. Total investment has increased to $1.68bn from the $1bn initially announced in May.

Chinalco Guinea alumina plant will be located close to the company’s existing Boffa bauxite operation. This should secure raw material supply while lowering transportation and logistics costs between mining and refining.

The project also reflects a wider shift in Guinea’s mining policy. The government is increasingly requiring major bauxite producers to invest in domestic alumina production rather than exporting raw ore alone.

Boffa Integration Strengthens Chinalco’s Supply Chain

Locating the refinery near the Boffa mine gives Chinalco greater control over feedstock and reduces dependence on long-distance transport of bauxite.

This integration can lower operating costs and improve supply reliability, particularly when logistics disruptions affect bulk commodity flows.

Guinea is already the largest supplier of bauxite to China, making the country strategically important to the Chinese aluminium industry.

Building alumina capacity locally changes the structure of that relationship. Instead of exporting only mined bauxite, Guinea can retain more processing value while Chinese producers secure access to refined feedstock closer to the resource base.

For Chinalco, the project also reduces exposure to domestic constraints in China and supports a more geographically diversified aluminium supply chain.

The investment increase to $1.68bn suggests a larger capital requirement than initially expected, highlighting the infrastructure and engineering demands involved in building refining capacity in emerging mining regions.

Guinea Pushes Downstream Aluminium Development

Guinea’s government has been pressuring major mining companies to develop domestic refining capacity as part of a broader strategy to maximise the economic value of its bauxite reserves.

Chinalco is not alone. Inner Mongolia Dian Tou Energy began construction of another alumina project in Guinea in March 2025.

These investments indicate that Guinea could become a much more important alumina producer over the next five years.

That would alter global aluminium supply chains by moving more refining closer to one of the world’s largest bauxite resource bases.

However, large-scale alumina production will require reliable power, water, transport and port infrastructure. These factors will determine whether Guinea can move from raw material dominance into sustained refining competitiveness.

If multiple projects reach production, Guinea could increasingly compete not only as a bauxite exporter but also as a major supplier of intermediate aluminium feedstock.

The Metalnomist Commentary

Guinea is using its bauxite dominance to force a shift downstream into alumina refining. If projects such as Chinalco’s Boffa plant succeed, the country could capture significantly more value while reshaping China’s aluminium feedstock strategy.

Chinalco Guinea Alumina Plant Plan Deepens China’s Bauxite Processing Footprint

Chinalco

Chinalco Guinea alumina plant plans mark another major step in shifting part of the aluminium value chain closer to Guinea’s bauxite resources. Chinese state-owned aluminium producer Chinalco has signed an agreement with the Guinean government to build a 1.2mn t/yr alumina facility in the country.

Chinalco Guinea alumina plant investment is expected to total $1bn. The company has not released a construction timeline, but said the production line will use local bauxite resources, which should support cost competitiveness.

Chinalco Guinea alumina plant development is strategically important because Guinea is China’s largest bauxite supplier. China imported 149mn t of Guinean bauxite in 2025, up 35% from a year earlier and equal to 74% of its total bauxite imports.

The project shows how Guinea’s resource policy is starting to reshape aluminium supply chains. The country is pushing mining companies to invest in local alumina production instead of exporting only raw bauxite.

Guinea Pushes Bauxite Miners Toward Local Value Addition

Guinea has strengthened mining supervision in recent years as it seeks more economic value from its bauxite reserves. Authorities are requiring large mining companies to build alumina plants in the country.

This policy shift matters because bauxite is only the first stage of the aluminium chain. Alumina refining captures more value, creates industrial jobs and gives the host country a stronger role in downstream processing.

For China, local alumina production in Guinea could reduce pressure on long-distance bauxite logistics. It may also help Chinese aluminium companies secure a more stable feedstock chain in a country that has become essential to their raw material supply.

Guinea’s leverage has increased because Chinese refiners depend heavily on its ore. With nearly three-quarters of China’s bauxite imports coming from Guinea, policy changes in Conakry can directly affect Chinese alumina and aluminium economics.

The $1bn Chinalco project therefore reflects both opportunity and pressure. Chinese firms can keep access to Guinean bauxite, but they increasingly need to commit capital to local processing.

Chinese Alumina Investment Faces Policy and Execution Risk

Chinalco’s agreement follows the start of construction by Inner Mongolia Dian Tou Energy on an alumina plant in Guinea’s Tougnifilidy area in March 2025. That project was described as the first Chinese-owned alumina project in Guinea.

Market participants expect Guinea’s alumina output to rise over the next five years. If these projects advance, Guinea could move from being mainly a bauxite exporter toward becoming a more meaningful alumina producer.

The shift could alter aluminium raw material trade flows. More alumina produced in Guinea may eventually reduce the need to ship some bauxite to China for refining, depending on costs, logistics and power availability.

However, execution risk remains high. Alumina refining requires capital, power, water, infrastructure, environmental management and stable policy terms. Project economics will depend on more than bauxite availability.

Guinea’s military government also moved in May 2025 to rescind mining licences granted over the previous two decades across bauxite, iron ore, gold, diamonds and graphite. That action has increased pressure on mining companies and reinforced the importance of compliance with local value-addition requirements.

For Chinese aluminium producers, the direction is clear. Guinea remains indispensable, but access to bauxite is increasingly tied to local investment, refining commitments and government expectations.

The Metalnomist Commentary

Guinea is using its bauxite dominance to force a deeper industrial bargain with foreign miners. Chinalco’s alumina project shows that China’s aluminium supply chain is no longer only about importing ore; it is becoming tied to processing investment inside resource countries.

Chinalco copper anode production rises as Dianzhong smelter adds capacity

Chinalco Copper Mining

Chinalco copper anode production is rising after a second furnace start-up. Chinalco copper anode production expands at the Dianzhong smelter in Yunnan. The upgrade replaces two older furnaces and modernizes operations. The project positions Chinalco for stronger domestic copper supply.

Capacity expansion at Yunnan’s Dianzhong smelter

The smelter will lift anode capacity from 191,700 t/yr to 249,800 t/yr. The first new furnace started in January; the second now enters service. A new refining facility adds 210,000 t/yr of copper cathode capacity. These upgrades enhance reliability and throughput for downstream customers.

Secondary copper strategy and cathode output

Each furnace includes a copper scrap feeding facility for higher recycling rates. This supports cathode output as concentrate supplies remain tight. Scrap supplied nearly 20% of global refined copper in 2024. China encourages more secondary copper use and new recycling capacity. Chinalco copper anode production will benefit from secure scrap sourcing.

The Metalnomist Commentary

Dianzhong’s phased upgrade aligns with China’s push for secondary copper. We expect improved margins from scrap blending and lower TC/RC exposure. Watch scrap import flows and cathode qualification as capacity ramps.

Chinalco Boosts Copper Anode Capacity Amid Rising Scrap Use

Chinalco

Major Upgrade at Dianzhong Smelter Targets Increased Output and Efficiency

China’s Chinalco has commenced operations of a new copper anode furnace at its Dianzhong smelter in Chuxiong, Yunnan province. This initiative is part of a 515 million yuan ($70.2 million) upgrade project. The upgrade aims to elevate the smelter’s copper anode production from 191,700 tonnes per year to 249,800 tonnes per year. Furthermore, a 210,000 tonnes per year copper cathode refining facility is set to launch in May.

Increased Scrap Integration

The Dianzhong smelter, previously reliant on copper concentrate, now incorporates a copper scrap feeding facility. This addition aligns with the growing trend of utilizing secondary copper. In 2023, over 31% of China's refined copper output originated from copper scrap, according to the China Nonferrous Metals Industry Association. The rising cost of copper concentrate has driven many producers to favor copper scrap. This shift led to a 14% year-on-year increase in China's copper scrap imports, reaching 2.03 million tonnes from January to November.

Market Implications

This expansion by Chinalco reflects the broader industry trend of adapting to feedstock cost fluctuations and increasing reliance on recycled materials. The upgrade will strengthen Chinalco's copper production capabilities and contribute to the supply of copper cathode. The increased usage of copper scrap also highlights the growing importance of the circular economy within the metals industry.

Peru’s Copper Output Surges 10.7% in August Amid Strong Growth from Key Miners

Minera Chinalco

Peru’s copper production saw a significant rise in August 2024, driven by robust output from leading mining companies like Minera Chinalco and MMG Las Bambas, according to the Ministry of Energy and Mines. However, year-to-date production remains slightly below 2023 levels, highlighting mixed trends in the sector.

August Copper Production Soars

The country’s copper output reached 246,570 metric tonnes (t) in August, a 10.7% increase from 222,800t in the same month last year.

•  Minera Chinalco led the growth with a 132% surge in output, producing 20,000t in August.
•  MMG Las Bambas recorded a 27.3% increase, achieving 32,850t during the same period.

Year-to-Date Decline

Despite the August surge, Peru’s copper production for January to August fell slightly by 0.7%, totaling 1.76 million tonnes (mn t) compared to the same period in 2023.

Mixed Performance in Other Metals

•  Zinc output in August declined by 16% year-on-year to 113,490t.
•  Molybdenum production surged by 42.4%, reaching 3,625t, reflecting strong demand and operational improvements in this sector.

Market Outlook

The rise in Peru’s August copper production underscores the resilience of major mining operations amidst fluctuating global demand. However, challenges persist in maintaining year-to-date growth due to operational and logistical constraints.

Chalco rare metals joint venture targets integrated growth and supply security

Rare Metals Mining

China’s Chalco rare metals joint venture marks a strategic expansion across high-purity processing and downstream products. The Chalco rare metals joint venture will unite affiliates under Chinalco to scale gallium, germanium, indium, selenium, tellurium and rhenium. As a result, the Chalco rare metals joint venture strengthens China’s control across critical mineral supply chains.

JV structure and product scope

Chalco will hold a 20pc stake in the joint venture. Other investors include Chinalco Group, Yunnan Copper, Chihong Zinc-Germanium and China Aluminum Capital. The venture will handle high-purity processing, compounding, product development, production and sales. Therefore, the platform links base metals and rare metals into one industrial chain.

Capacity plans and policy backdrop

Chalco targets 16.81mn t of metallurgical alumina and 7.8mn t of primary aluminium in 2025. Meanwhile, Beijing is integrating critical minerals and tightening export controls on selected metals. China also consolidated rare earth assets into Northern Rare Earth and China Rare Earth. Consequently, the Chalco rare metals joint venture aligns capacity with policy and market needs.

The Metalnomist Commentary

The JV formalizes a midstream hub that can stabilize feedstock and pricing. Buyers should watch contract terms for gallium and germanium as policy risk stays elevated. Partnerships may expand quickly if downstream magnet and semiconductor demand accelerates.

Peru's Copper Production Plummets in June Amid Industry-Wide Decline

Peru, one of the world's largest copper producers, saw a significant decline in its copper output in June, marking a nearly 12% drop compared to the same period last year. This downturn is reflective of broader challenges within the country's mining sector, where most companies reported decreased production.

- According to data released by Peru's Ministry of Energy and Mines, copper production fell to 213,580 metric tonnes in June, down from 241,880 tonnes in June 2022. This also represents a 7.7% decrease from May's output, highlighting the continuing downward trend in the nation's copper industry.

- The decline in output was widespread across the sector. Minera Chinalco, one of the major players in Peru, experienced a staggering 60% drop in production, bringing its June output down to approximately 8,210 tonnes. Similarly, Minera Antapaccay, controlled by global mining giant Glencore, saw a 40% reduction, with June output falling to 8,680 tonnes.

- The overall year-to-date copper production in Peru also fell by 2.1%, totaling 1.3 million tonnes by the end of June.

- In addition to copper, Peru's zinc production also suffered a significant hit, falling by 21% year-on-year to 106,650 tonnes in June. However, there was a bright spot in the country's molybdenum production, which saw an increase of around 25% from the previous year, reaching 3,780 tonnes in June.