The Critical Mineral Processing Gap — China's Dominance, Western Shortfall & Policy Responses

Anatomy of China’s Dominance

The most consequential vulnerability in the global energy transition supply chain is not the availability of raw minerals in the ground. It is the concentration of mineral processing and refining capacity in a single country. China has built a commanding position in the mid-stream stages of the critical mineral value chain—the chemical processing, smelting, and refining operations that convert raw ores and concentrates into the battery-grade materials that enter cell manufacturing. This dominance was not achieved by accident. It is the product of three decades of deliberate industrial policy, massive state-directed investment, permissive environmental regulation, and strategic acquisition of overseas mineral assets.

The scale of China's processing dominance is difficult to overstate. Chinese facilities refine approximately 70 to 80 percent of the world's cobalt, 60 to 65 percent of the world's lithium, over 90 percent of the world's battery-grade graphite, approximately 87 percent of rare earth elements, and over 35 percent of global copper smelting capacity. In cathode precursor material (pCAM) and cathode active material (CAM)—the intermediate products that sit between refined chemicals and battery cells—China's share exceeds 70 percent for both.

This processing dominance means that even minerals mined on other continents are processed in China before they can enter battery manufacturing supply chains. Australian spodumene (lithium) is shipped to China for conversion to lithium hydroxide. Congolese cobalt hydroxide is shipped to Chinese refineries in Jiangsu and Zhejiang provinces for conversion to cobalt sulfate. Chilean lithium carbonate is re-processed in Chinese facilities. The physical flow of materials converges on China regardless of where extraction occurs, creating a structural dependency that no amount of upstream mining diversification can address on its own.

Refining Dominance by Mineral

The most extreme asymmetry is in cobalt: China mines virtually no cobalt domestically but processes 70 to 80 percent of the global supply. This is achieved by importing DRC cobalt hydroxide—the intermediate product produced at mine sites—and refining it into battery-grade cobalt sulfate at Chinese chemical plants. Chinese companies including Huayou Cobalt, GEM, CNGR, and Jinchuan dominate this refining stage. Even Glencore, the world's largest cobalt trader, sells significant volumes of cobalt hydroxide to Chinese refiners because they are the only buyers with sufficient processing capacity at competitive cost.

In lithium, China's processing leverage operates through a similar mechanism. Australian and South American lithium producers ship concentrate or raw carbonate to Chinese conversion plants that produce the battery-grade lithium hydroxide and lithium carbonate specified by cathode manufacturers. Ganfeng Lithium, Tianqi Lithium, and CNGR are among the largest lithium processors. China's lithium processing dominance has persisted even as new Australian and Chilean capacity has come online, because the scale, cost efficiency, and integration of Chinese chemical plants remain difficult to replicate.

The rare earth processing chain is perhaps the most strategically sensitive. China controls over 60 percent of rare earth mining and approximately 87 percent of processing. For the specific rare earth oxides used in permanent magnets—neodymium and praseodymium (NdPr)—Chinese control over separation, oxide production, metal reduction, and magnet manufacturing exceeds 90 percent at each stage. This gives Beijing effective control over the permanent magnets that power EV motors, wind turbine generators, and defence applications. The Longonjo rare earth project in Angola, connected to the Lobito Corridor, represents one of the few non-Chinese rare earth development pathways with strategic Western backing.

The Western Capacity Shortfall

The scale of the Western processing capacity shortfall becomes apparent when projected demand is compared to existing non-Chinese capacity. Europe, North America, Japan, and South Korea collectively need to produce enough battery-grade materials to supply their growing gigafactory fleets. But their combined processing capacity falls far short of requirements.

The graphite anode material gap is the most extreme: Western and allied nations have virtually no commercial-scale production of battery-grade spherical graphite. Syrah Resources' Vidalia plant in Louisiana, processing natural graphite from Mozambique, is one of the very few non-Chinese anode material facilities operating at any scale. The cathode material gap is similarly acute, with the vast majority of NMC and LFP cathode production concentrated in China, South Korea, and Japan.

This shortfall means that European and American gigafactories—built at a cost of billions of dollars with substantial government subsidies—will depend on Chinese-processed materials for the majority of their input supply for years to come. The battery megafactory race is creating cell manufacturing capacity faster than the upstream processing capacity to supply it, producing a structural bottleneck that Chinese processors are uniquely positioned to fill.

Investment Required

Closing the processing gap requires investment at a scale that has few precedents in the chemical industry. Building a world-scale lithium hydroxide refinery costs approximately $500 million to $1 billion and takes 3 to 5 years from ground-breaking to commercial production. A nickel-cobalt refinery of similar scale costs $1 to $2 billion. A cathode precursor plant costs $300 to $800 million. A cathode active material facility costs $500 million to $1.5 billion. Anode material production facilities for synthetic or processed natural graphite cost $300 to $600 million.

The total investment required to build a non-Chinese-dependent battery material supply chain has been estimated at $50 to $100 billion over the next decade. This figure encompasses not only the processing facilities themselves but also the supporting infrastructure: reliable power supply, water treatment, chemical reagent supply, waste management, and logistics connectivity.

The commercial challenge is that Chinese processors benefit from scale advantages, lower labour costs, subsidised energy, established technical expertise, and a permissive regulatory environment that allows faster construction timelines. New Western processing facilities must compete with this entrenched position while also meeting stricter environmental standards, higher labour costs, and longer permitting timelines. Government subsidies and guaranteed offtake agreements are typically necessary to make Western processing projects bankable.

Policy Responses

Western governments have responded to the processing gap with an escalating series of legislative and financial interventions. The most consequential include:

US Inflation Reduction Act (IRA)

The IRA's battery provisions require that an increasing percentage of critical mineral content in EV batteries be extracted or processed in the United States or a country with a free trade agreement with the US. By 2027, 80 percent of the value of critical minerals in batteries must meet this requirement to qualify for the $7,500 EV tax credit. This effectively creates a financial penalty for batteries using Chinese-processed minerals, incentivising investment in domestic and allied processing capacity.

EU Critical Raw Materials Act (CRMA)

The CRMA sets binding targets for European processing capacity: by 2030, the EU must process at least 40 percent of its annual critical mineral consumption domestically. This represents a dramatic increase from current levels of less than 5 percent for most battery minerals. The regulation also mandates strategic reserves, recycling targets, and streamlined permitting for mineral projects deemed strategic.

Minerals Security Partnership (MSP)

The US-led MSP, comprising over a dozen allied nations, coordinates investment in critical mineral supply chains outside China. The MSP has identified specific projects for coordinated support, including processing investments in Africa, Latin America, and allied Asian nations. The partnership explicitly recognises the Lobito Corridor as a strategic priority for mineral supply chain diversification.

Japan-Korea-Australia Bilateral Agreements

Japan and South Korea have signed bilateral mineral supply agreements with Australia, Canada, and several African nations, providing financing and technical assistance for mine development and processing. Japan's JOGMEC (Japan Oil, Gas and Metals National Corporation) has invested in cobalt, lithium, and rare earth projects globally, while Korea's KOMIR has focused on securing nickel and cobalt supply for Korean battery manufacturers.

African Processing Ambitions

The most transformative—and most challenging—approach to closing the processing gap is building refining capacity in mineral-producing countries themselves. For the DRC and Zambia, this means converting the cobalt hydroxide, copper concentrate, and potentially lithium ore they currently export as semi-processed intermediates into battery-grade refined products.

The DRC has been the most aggressive in pursuing this strategy. The government's cobalt export quota and ban policy is explicitly designed to force investment in domestic cobalt refining. The logic is modelled on Indonesia's nickel export ban, which successfully attracted over $15 billion in Chinese processing investment between 2014 and 2023. However, the DRC faces more challenging conditions than Indonesia: less reliable power supply, weaker transport infrastructure, higher security risks, and a smaller domestic market for the chemicals and reagents required by processing plants.

Zambia has articulated an ambition to develop a cathode precursor manufacturing industry, building on its existing copper smelting and refining capacity. President Hakainde Hichilema's government has engaged with the US DFC and European development finance institutions about attracting investment for processing special economic zones along the Lobito Corridor route. The Zambian approach emphasises market-based incentives rather than export restrictions, offering tax holidays, streamlined permitting, and guaranteed infrastructure access as investment attractors.

The joint DRC-Zambia battery value chain initiative, supported by the US and EU, envisions a regional processing ecosystem in which DRC cobalt is refined in Zambian or Angolan special economic zones, using power from Zambian hydroelectric facilities and exporting via the Lobito rail and port infrastructure. This integrated model would address multiple supply chain vulnerabilities simultaneously: reducing Chinese processing dependency, creating African value addition, and utilising corridor logistics capacity.

The Corridor Opportunity

The Lobito Corridor represents the physical infrastructure backbone upon which an African mineral processing industry could be built. The corridor's value proposition for processing investment includes proximity to feedstock (Copperbelt mines), westward port access for export to Europe and North America, hydroelectric power availability in Zambia, and the political backing of Western governments and development finance institutions.

Several specific processing investment opportunities have been identified along the corridor route. Cobalt refining facilities to convert DRC cobalt hydroxide into battery-grade cobalt sulfate could be located in the Haut-Katanga or Copperbelt provinces. Copper electro-refining facilities to produce LME Grade A copper cathode from DRC and Zambian concentrate could expand existing Zambian smelter capacity. Lithium conversion plants to process Manono spodumene into lithium hydroxide could be established in special economic zones. Rare earth separation facilities to process Longonjo concentrate could operate in Angola, close to the mine site.

The investment scale required is immense—$5 to $15 billion over the next decade for a meaningful African processing complex. But the strategic rationale is equally compelling. Every tonne of battery material processed in Africa rather than China represents both economic value captured by African economies and supply chain risk reduced for Western battery manufacturers. The US DFC, the EU Global Gateway, the Africa Finance Corporation, and the African Development Bank have all signalled willingness to provide concessional financing and risk guarantees for corridor-linked processing investments.

The processing gap is the central structural weakness in the Western approach to the energy transition. It is also, for mineral-producing nations along the Lobito Corridor, the central economic opportunity. Closing that gap—by building the refineries, chemical plants, and cathode material facilities that convert African minerals into battery-grade inputs—would transform the corridor from a logistics pathway for raw material export into the processing backbone of a diversified, geopolitically resilient battery supply chain.