Marimaca Copper Announces Option to Acquire 150ktpa Sulfuric Acid Plant

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[{"type":"text","content":"Marimaca Copper Announces Option to Acquire 150ktpa Sulfuric Acid Plant\n\n\n\n VANCOUVER, British Columbia, Aug. 21, 2025 (GLOBE NEWSWIRE) --\n \n Marimaca Copper Corp. (“Marimaca” or the “Company”) (TSX: MARI) (ASX: MC2)\n \n is pleased to announce it has recently executed a binding asset purchase option agreement (the “Agreement”) to acquire a used sulfuric acid plant in Chile from CEMIN Holding Minero (“CEMIN”). Sulfuric acid is one of the key input costs for the Marimaca Oxide Deposit (“MOD”), and the ability to produce a significant amount of its own supply will reduce exposure to a volatile acid market.\n \n\n\n Highlights\n \n\n\n\n\n Option agreement to acquire sulfuric acid plant for US$2.5m\n \n\n\n\n Exclusivity period of 3-months to allow further detailed technical and engineering reviews including capital and operating cost estimates for the installation and operation of the sulfuric acid plant\n \n\n\n\n Plant capacity of up to 150ktpa of concentrated sulfuric acid, representing approximately 30% to 40% of total acid consumption at the Marimaca Oxide Deposit depending on phase of development\n \n\n\n\n Substantial opportunity to reduce volatility of key input cost (sulfuric acid)\n \n\n\n\n Based on market research and quotations received by Marimaca – the estimated equipment cost of a new sulfuric acid plant of similar capacity is approximately US$35-40m, with total installation cost of US$50-US$60m\n \n\n\n\n Relocation to Mejillones and start-up costs of used plant expected to be materially lower than cost of new equipment\n \n\n\n\n\n\n Indicative operating costs show potential for approximately 30% reduction in acid cost relative to current long-term forecast and normal historical spot and contract acid prices delivered to Mejillones\n \n\n\n\n Simplifies acid storage strategy due to relative ease of storing physical elemental sulfur when compared to concentrated sulfuric acid\n \n\n\n\n The Company has completed initial engagement with industrial operators in Mejillones with respect to installation of sulfuric acid plant\n \n\n\n\n Significant mitigation of key financial risk for the Company\n \n\n\n\n The MOD Definitive Feasibility Study, now largely complete and undergoing final review before publication, will not capture potentia...

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