Between 2017 and 2018, smelting costs for the primary aluminium industry have increased significantly. Aside of volatile alumina prices, higher prices of calcined petroleumpet coke (CPC) and coal tar pitch (CTP), the two main ingredients of carbon anodes that provide the electrolytic chemical reaction during aluminium smelting were the key contributors to this rise.
Why Are Anode Production Costs Rising? – Aluminium Insider
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