chemical · input
Coal tar pitch (CTP) is the viscous residue remaining after coal tar distillation (typically 50-60% of coal tar by weight). Primary use: binder in prebaked carbon anodes for aluminum electrolytic smelting — anodes are formed by mixing calcined petroleum coke (CPC) with coal tar pitch as a binder, then baking. Each tonne of primary aluminum requires ~0.4-0.5 tonnes of anode carbon; coal tar pitch is approximately 20-25% of the anode formulation. Alternative binder (coal tar impregnating pitch) is used in secondary anode production. Global supply is highly concentrated in a few coal tar distillers: Rutgers (Germany), Rain CII Carbon (US, largest North American producer), Koppers Holdings (US), and Himadri (India). Secondary source: integrated steel mills that produce coal tar as a byproduct of coking operations.
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Source countries
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Companies
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Goods affected
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Claims on record
What depends on it
1 essential American goods rely on coal tar pitch (aluminum smelting anode binder) somewhere upstream in their supply chain.
Who makes it
6 companies produce coal tar pitch (aluminum smelting anode binder).
Largest European coal tar pitch producer; processes coal tar from European steel mills at Castrop-Rauxel, Germany and other sites. Produces anode-grade and electrode-grade CTP for aluminum and graphite electrode manufacturing. Formerly part of RAG (Ruhrkohle AG); sold to Lone Star Funds (US PE) 2014. Also produces naphthalene, creosote, and other coal tar distillates.
Largest independent calcined petroleum coke (CPC) producer globally; ~25% global market share; part of Rain Industries (India); operates calcining plants in the US (New Orleans, Chalmette LA), Europe, and India; buys green petcoke from Gulf Coast refineries and exports CPC to aluminum smelters worldwide
Leading global petcoke trading intermediary and calciner; Rain CII Carbon (US subsidiary) is the largest single recipient of Indian GPC import quotas (462,589t in FY2025-26); operates calciners in US, India, Belgium, and Russia; sources green petcoke from Gulf Coast refineries.
Leading US producer of carbon compounds and wood preservation chemicals; supplies copper-based preservatives (ACQ, CA-B) to the pressure-treated lumber industry. Also major railroad tie treater.
India's largest coal tar pitch producer; processes coal tar from Indian steel mills (Tata Steel, JSW, SAIL) into CTP for aluminum anodes, graphite electrodes, and carbon black. Also produces advanced carbon materials for Li-ion battery anodes. NSE/BSE listed. Kolkata/Mahad facilities are the primary production sites.
Second-largest North American railroad tie producer; major Canadian-listed wood products company. $3.5B total revenue in 2024 (5% growth); railway ties represented 27% of Q1 2025 sales ($208M). Supplies 12M+ pressure-treated railroad crossties per year to Class I, regional, and short-line railroads. Operates 44 wood treating plants total (9 US + 2 Canada for railway ties specifically); also operates a coal tar distillery for creosote production. Also a dominant utility pole producer (43% of revenue) — the same pressure-treating infrastructure serves both railroad ties and utility poles. Publicly listed on Toronto Stock Exchange.
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