The Graphite Supply Chain Explained: Mining, Processing, China’s Dominance and the Battery-to-Steel Divide

Graphite supply chain defined The graphite supply chain has two parallel tracks that rarely intersect: natural graphite (mined as flake, vein, or amorphous ore) and synthetic graphite (manufactured from petroleum coke). Natural graphite goes through intensive purification and shaping processes to become battery anode material. Synthetic graphite becomes electrodes for electric arc furnace (EAF) steelmaking. China produces over 65% of the world’s natural graphite and controls the critical processing steps for battery-grade material. In October 2023, China introduced export controls on graphite, signalling its awareness of graphite’s strategic importance.

Table of Contents

1. Two Types of Graphite: Natural and Synthetic
2. Natural Graphite Mining: China, Mozambique, Madagascar, Brazil
3. The Battery Anode Supply Chain: From Flake to Spherical Purified Graphite
4. China’s Export Controls on Graphite (October 2023)
5. Electrode Graphite: The EAF Steelmaking Demand
6. How Graphite Physically Moves: Bulk Carriers and Containers
7. How Graphite Is Priced: PRAs and No Futures Exchange
8. Supply Chain Risks and Western Diversification Efforts
9. Frequently Asked Questions
10. Key Takeaways

Two Types of Graphite: Natural and Synthetic

Graphite is a crystalline form of carbon — the same element that makes up diamonds and coal, but in a very different molecular structure. Graphite’s layered hexagonal structure gives it unique properties: electrical conductivity, lubrication ability, heat resistance, and the ability to intercalate lithium ions (critical for battery function).

The market is split between two fundamentally different production routes.

Natural graphite is mined from geological deposits. It occurs in three main forms:

• Flake graphite: Thin, flat platelets of crystalline graphite in metamorphic rock. The highest-value and most important form for battery applications. Purity typically 90-97% carbon in run-of-mine concentrate.
• Vein graphite (lump graphite): High-purity crystalline graphite found in veins, primarily in Sri Lanka. Very high natural purity (90-99%), but limited production volume.
• Amorphous graphite: Low-crystallinity graphite with 60-80% carbon content. Lowest quality; used in brake linings, pencils, and lubricants, but not suitable for batteries.

Synthetic graphite is manufactured — not mined. It is produced by heating petroleum coke or coal tar pitch to extremely high temperatures (2,500-3,000°C) in a process called graphitization. At these temperatures, disordered carbon atoms rearrange into the crystalline graphite structure. Synthetic graphite has very high and controllable purity and is the preferred material for EAF electrodes and some high-performance battery applications.

The natural and synthetic graphite markets intersect in batteries (both types are used in anodes) but diverge completely in steelmaking (only synthetic graphite meets the size and purity requirements for EAF electrodes).

Natural Graphite Mining: China, Mozambique, Madagascar, Brazil

Country	Share of Global Natural Graphite Production	Key Operations
China	~65-70%	Multiple provinces: Heilongjiang, Inner Mongolia, Sichuan
Mozambique	~10-12%	Syrah Resources (Balama mine), Magnis Resources
Madagascar	~6-8%	NextSource Materials, Imerys
Brazil	~6-8%	Nacional Grafit, AMG Advanced Metallurgical Group
Russia	~2-3%	Various Siberian operations

China’s dominance is not just in mining volume — it is deeper and more structural. China controls the mid-stream processing steps (purification, micronisation, spheronisation) that convert raw flake graphite into battery-grade material. Even graphite mined in Mozambique or Madagascar typically travels to China for processing. This means the effective supply chain bottleneck is not the mine but the Chinese processing industry.

Mozambique hosts the Balama mine (operated by Syrah Resources), which opened in 2017 and is designed to produce up to 350,000 tonnes of graphite concentrate per year — making it one of the world’s largest flake graphite operations. However, Balama has faced demand challenges: without battery-grade processing capacity nearby, much of the concentrate needed to find buyers in China, which was simultaneously producing its own graphite. Syrah has since invested in a battery anode material (BAM) facility in Vidalia, Louisiana — attempting to capture more of the processing value chain.

Madagascar has multiple graphite projects. The Molo graphite project (NextSource Materials) is designed to produce high-purity flake graphite concentrate. Madagascar graphite has a reputation for good quality due to low levels of contaminants.

Brazil’s graphite is primarily amorphous and vein graphite, used in refractories and lubricants rather than batteries. A small amount of flake graphite is produced from mines in Minas Gerais.

The Battery Anode Supply Chain: From Flake to Spherical Purified Graphite

The battery anode is where graphite’s unique property — the ability to absorb and release lithium ions during charging and discharging — is exploited. Every lithium-ion battery cell contains a graphite anode. This is true of batteries in EVs, smartphones, laptops, and grid energy storage.

The processing chain from raw flake graphite to battery-ready anode material involves multiple intensive steps, each of which China dominates.

Step 1 — Mining and concentration: Flake graphite ore (typically 5-20% carbon) is mined, crushed, and concentrated by flotation to 90-97% carbon. The output is called graphite concentrate or flake graphite concentrate, graded by flake size (+100 mesh, +80 mesh, +50 mesh, etc.) and carbon purity.

Step 2 — Micronisation: Large flake graphite is ground to a consistent fine particle size. This step reduces flake size to roughly 20-30 micrometres, suitable for the next processing step.

Step 3 — Spheronisation: The critical and difficult step. Micronised graphite is processed in high-speed impact mills that round off the jagged edges and shape the particles into spheres. The result is called spherical graphite (SPG). Spherical shape is essential for battery anode function — spherical particles pack more densely and allow lithium ions to intercalate uniformly. Spheronisation generates a large volume of graphite “fine” by-product that cannot be used in batteries.

Step 4 — Thermal purification: SPG is heated to 2,800-3,000°C in graphitization furnaces. This removes impurities (sulphur, ash, volatile materials) and increases carbon purity to above 99.95%. Battery manufacturers require extreme purity — even trace metal contaminants can cause safety failures in lithium-ion cells.

Step 5 — Coating: The purified SPG is coated with a thin layer of pitch and re-heat-treated (carbonised). The coating improves first-cycle efficiency — reducing the lithium capacity “lost” on the battery’s first charge cycle. This is called coated spherical purified graphite (CSPG) or battery anode material (BAM).

Step 6 — Mixing and electrode manufacturing: Battery cell manufacturers (CATL, Panasonic/Tesla, Samsung SDI, LG Energy Solution) receive BAM and mix it with binders and conductive additives to form an anode slurry, which is coated onto copper foil and assembled into battery cells.

China’s role in this chain: Steps 2-5 (micronisation, spheronisation, thermal purification, coating) are almost entirely performed in China. The yield at the spheronisation step is poor — roughly 30-40% of input flake graphite ends up as usable SPG. The rest is fine by-product with limited value. This means processing 1 tonne of anode material requires importing roughly 2.5-3 tonnes of flake graphite concentrate. China has built the processing infrastructure and refined the know-how over two decades. No other country currently has comparable commercial-scale processing capacity.

China’s Export Controls on Graphite (October 2023)

In August 2023, China announced that graphite products would be subject to export controls, effective December 1, 2023. The controls require Chinese exporters to apply for licences from the Ministry of Commerce (MOFCOM) for exports of:

• High-purity (>99.9% C), high-strength, and high-density synthetic graphite material and products
• Natural flake graphite and its products (spherical graphite, expanded graphite, flake graphite powder >25% C content, graphite paper)

The controls require exporters to provide information about end users and end uses. MOFCOM can refuse licences based on national security considerations.

The stated rationale: China cited national security and export control regulations applicable to “dual-use” materials. Graphite has military applications (lithium-ion batteries in military equipment, nuclear reactor moderators).

The real strategic context: The controls came as Western governments (US, EU, UK) were trying to reduce dependence on Chinese critical minerals, including through the US Inflation Reduction Act (which provides EV tax credits only for vehicles with battery materials from non-China sources), the EU Critical Raw Materials Act, and bilateral initiatives with countries like Mozambique, Madagascar, and Canada.

Market impact: The announcement caused significant anxiety among battery manufacturers and EV producers in Japan, South Korea, and Europe who source battery-grade graphite from China. Spot prices for SPG and BAM rose. Battery gigafactory supply chain teams accelerated efforts to qualify alternative sources. However, no significant volume of alternative non-Chinese supply was immediately available — building processing capacity outside China will take years.

In 2024, Chinese graphite exports continued under the licence system, with most legitimate commercial shipments receiving approvals. The controls created compliance burden and uncertainty rather than a physical supply cutoff. However, the message was clear: China views graphite as a strategic export, not merely a commodity.

Electrode Graphite: The EAF Steelmaking Demand

The battery narrative around graphite can overshadow its long-established, large-scale use in steel production — specifically in electric arc furnace (EAF) electrodes.

EAF steelmaking requires large cylindrical graphite electrodes — typically 24 inches (610 mm) in diameter and up to 8 feet (2.4 metres) long — to conduct the massive electrical currents that melt steel scrap. These electrodes are consumed during the steelmaking process: they gradually oxidise and shorten as steel is produced. A large EAF might consume 2-4 kg of electrode per tonne of steel produced.

Annual global electrode graphite demand is approximately 700,000-800,000 tonnes, comparable in volume to (though separate from) battery anode material demand.

EAF electrode supply chain: Electrodes are produced from needle coke — a premium synthetic graphite precursor derived from either petroleum (oil refineries) or coal-tar pitch (from coking coal). The process:

1. Needle coke production (specialty refiners: Phillips 66, Indian Oil, various Chinese producers)
2. Electrode forming: needle coke is mixed with pitch, extruded into cylindrical shapes, and baked
3. Graphitization: baked electrodes are heated to 2,800-3,000°C to convert carbon to crystalline graphite
4. Machining and nipple attachment: electrodes are machined to tight tolerances and fitted with threaded nipples for assembly

Major electrode producers: GrafTech International (US), SGL Carbon (Germany), Showa Denko (Japan), and various Chinese producers who have gained significant market share since 2010.

The 2017-2018 electrode shortage: A dramatic event that showed this market’s volatility. Chinese environmental crackdowns on needle coke and electrode plants, combined with surging EAF steel demand, caused electrode prices to spike from approximately $3,000-4,000/tonne to over $30,000/tonne in 2017-2018. Chinese steel mills and EAF operators globally faced production cuts due to electrode supply constraints. Electrode prices collapsed again by 2019 as Chinese supply normalised.

This event is worth knowing: it demonstrates that even “established” industrial material markets can experience acute supply shocks when processing capacity is geographically concentrated.

How Graphite Physically Moves: Bulk Carriers and Containers

Graphite moves differently at different stages of the supply chain, and understanding these logistics flows matters for tracking the physical trade.

Natural graphite concentrate (flake graphite): Shipped in bulk carriers, typically in 20,000-60,000 tonne parcels. The major export ports for flake graphite concentrate are:

• Qingdao, Shandong (China): The primary Chinese export port for graphite. Shandong province and Heilongjiang province mines send graphite to Qingdao for export and domestic processing.
• Tianjin (China): Secondary export port, serving mines in Inner Mongolia and Hebei.
• Nacala (Mozambique): The port serving Syrah Resources’ Balama mine via the Nacala rail corridor.
• Toamasina (Madagascar): Madagascar’s primary export port.

Processed battery anode material (SPG, BAM): Shipped in containers from Chinese processing facilities to battery gigafactories. This is a high-value, precision product requiring careful handling and packaging. Key import ports are those closest to gigafactories: in the US (Georgia, Tennessee, Kansas for current and planned facilities); in Germany and Hungary (European gigafactories); and in South Korea and Japan (established cell manufacturers).

EAF graphite electrodes: Shipped in containers, typically individually wrapped and packed in wooden frames. Each electrode weighs 900-1,500 kg. Electrodes ship from manufacturers in Germany (SGL Carbon: Bonn, Meitingen), the US (GrafTech: Clarksburg, WV), Japan (Showa Denko: Omachi), and China to EAF steel mills worldwide.

The separation between bulk carrier flows (for raw flake) and container flows (for processed battery material and electrodes) is a useful rule of thumb for tracking different stages of the graphite supply chain.

How Graphite Is Priced: PRAs and No Futures Exchange

Unlike copper (LME), oil (NYMEX/ICE), or grains (CBOT), there is no liquid futures exchange for graphite. Graphite price discovery happens through:

Price Reporting Agencies (PRAs): Specialist commodity price intelligence firms assess and publish graphite prices based on market participant surveys, trade data, and proprietary research. The major PRAs for graphite are:

• Fastmarkets: Publishes assessments for flake graphite concentrate by size (e.g., “China flake graphite concentrate 94-97% C, +100 mesh”), spherical graphite, and anode material.
• Benchmark Mineral Intelligence (BMI): A specialist critical minerals intelligence firm that publishes assessments for lithium, cobalt, graphite, and other battery materials. BMI’s prices are widely referenced in battery supply chain contracts.
• Industrial Minerals (IM, now part of Fastmarkets): Long-established assessments for industrial mineral markets including graphite.

How graphite contracts are typically priced: Long-term supply agreements between graphite processors and battery manufacturers typically reference a PRA assessment (such as Fastmarkets’ SPG price) with agreed adjustments for quality specifications. Unlike commodity futures, there is no centralised exchange order book — each deal is bilateral.

Typical price ranges (indicative, not current):

Product	Approx. Price Range (USD/tonne)	Notes
Flake graphite concentrate (94-97% C)	$500-1,200/t	Varies with flake size and grade
Spherical purified graphite (99.95% C)	$4,000-8,000/t	Before coating step
Battery anode material (coated SPG)	$8,000-16,000/t	Ready for cell manufacturing
Graphite electrodes (EAF grade)	$3,000-12,000/t	Extreme volatility; peaked at $30,000+ in 2017-18

The price waterfall: The significant value addition as graphite moves from flake concentrate to battery anode material — potentially a 10-20x price increase — reflects both the processing cost and the Chinese processing industry’s margin capture. The absence of competitive non-Chinese processing means China can capture much of this value through its processing monopoly even if it doesn’t control the mining.

Supply Chain Risks and Western Diversification Efforts

The graphite supply chain has attracted significant government and industry attention as a critical minerals risk, particularly following:

• China’s export controls (October 2023)
• The Inflation Reduction Act’s battery material sourcing requirements (2022)
• EU Critical Raw Materials Act (2023) designating graphite as a critical raw material

Current diversification initiatives:

Syrah Resources / Vidalia BAM facility (Louisiana, USA): Syrah is building battery anode material capacity at Vidalia to process Mozambican flake graphite concentrate into anode material in the US. The US Department of Energy provided a loan guarantee. Target capacity: 11,250 tonnes/year of BAM initially, with planned expansion.

Nouveau Monde Graphite (Quebec, Canada): Plans to mine graphite in Quebec (Matawinie project) and process it into battery-grade anode material (Bécancour facility). Targeting commercial production by 2025-2026.

EcoGraf (Australia/Tanzania): Proposing battery-grade graphite processing in Australia using graphite from Tanzania.

The challenge: Building non-Chinese processing capacity is expensive, time-consuming, and technically demanding. The spheronisation and high-temperature purification steps require specialist equipment and process know-how that has been refined in China for two decades. Cost competitiveness versus established Chinese processors is a genuine challenge even with government support.

Frequently Asked Questions

What is the difference between natural and synthetic graphite?

Natural graphite is mined from geological deposits and processed to remove impurities. Synthetic graphite is manufactured by heating petroleum coke to 2,800-3,000°C in a graphitization furnace, causing disordered carbon to rearrange into crystalline graphite. Synthetic graphite is used in EAF steelmaking electrodes (where consistent large sizes and high purity are required) and in some premium battery applications. Natural graphite (processed to battery grade) dominates the anode material market.

Why does graphite matter for EV batteries?

Every lithium-ion battery cell has a graphite anode. The graphite stores lithium ions during charging and releases them during discharge. There is no currently commercial-scale alternative to graphite for this function — silicon anode materials are being developed but are not yet competitive at scale. An EV battery pack typically contains 50-100 kg of graphite anode material. As EV sales scale globally, demand for battery-grade graphite is expected to roughly triple or quadruple by 2030.

What did China’s October 2023 graphite export controls actually do?

They require Chinese exporters of specified graphite products (including natural flake graphite above certain purity levels, spherical graphite, and high-performance synthetic graphite) to obtain export licences from China’s Ministry of Commerce. Exporters must disclose end users and end uses. MOFCOM can refuse licences for national security reasons. In practice in 2024, most commercial shipments received approvals, but the controls created compliance burden, delivery uncertainty, and incentive for non-Chinese buyers to accelerate supply chain diversification.

Why doesn’t graphite have a futures exchange like copper or oil?

Futures exchanges work best for commodities that are standardised, fungible, and widely traded in spot markets. Graphite is neither standardised nor fungible — battery-grade SPG is entirely different from EAF electrodes or industrial-grade flake, and specifications vary by application and customer. The market is also segmented geographically (Chinese domestic pricing, Chinese export pricing, and limited non-Chinese pricing). These characteristics make it difficult to design a standardised futures contract with sufficient liquidity to be useful.

How is graphite shipped from Mozambique?

The Balama mine (Syrah Resources) in Mozambique’s Cabo Delgado province is landlocked. Graphite concentrate from Balama is transported by truck to the Nacala rail line, then by train to Nacala port on the Indian Ocean coast — a journey of approximately 900 km. From Nacala, it ships in bulk carriers to customers (primarily in China and, increasingly, the US Vidalia processing facility). The Nacala corridor is the critical infrastructure link that determines Balama’s logistics competitiveness.

What is needle coke and why is it important for EAF electrodes?

Needle coke is a premium synthetic graphite precursor with a highly ordered crystal structure, produced from petroleum residues (petroleum needle coke) or coal-tar pitch (coal needle coke). Its needle-like crystalline structure is essential for producing graphite electrodes with the low coefficient of thermal expansion required for EAF steelmaking — electrodes that expand and crack when heated rapidly would be commercially useless. The supply of needle coke — concentrated among a small number of specialist refiners — was the constraint in the 2017-2018 electrode price spike.

Key Takeaways

• The graphite supply chain has two parallel tracks: natural graphite (flake, processed to battery anode material) and synthetic graphite (from petroleum coke, used as EAF steelmaking electrodes).
• China produces over 65% of the world’s natural graphite and controls the critical mid-stream processing steps — micronisation, spheronisation, and thermal purification — that convert flake graphite into battery-grade anode material (BAM).
• The battery anode supply chain runs: flake graphite mining → micronisation → spheronisation → thermal purification → coating → battery cell anode. Each step adds significant value; most steps are currently China-dominated.
• China’s October 2023 export controls on graphite require export licences for natural flake graphite and battery-grade products, signalling graphite’s designation as a strategic critical mineral.
• EAF electrode graphite (synthetic, from needle coke) is a separate major demand driver — the 2017-2018 electrode shortage spiked prices from ~$4,000 to $30,000/tonne when Chinese environmental shutdowns coincided with rising EAF steelmaking demand.
• Natural graphite is shipped in bulk carriers from Chinese ports (Qingdao, Tianjin), Mozambique (Nacala), and Madagascar (Toamasina); processed battery anode material ships in containers to gigafactories.
• There is no liquid futures exchange for graphite; prices are set through PRA assessments (Fastmarkets, Benchmark Mineral Intelligence) and bilateral supply agreements.
• Western diversification projects (Syrah/Vidalia in Louisiana, Nouveau Monde in Quebec) are building non-Chinese processing capacity, but face significant cost, scale, and technical challenges competing with China’s established industry.

Related Reading

To deepen your understanding of the topics covered in this article, explore these related guides: another supply chain where China controls the majority of global processing, the steelmaking applications that consume natural flake graphite and the battery sector creating new demand for anode-grade material.