Rio Tinto Faces Guinea Refining Demands at Simandou Iron Ore Project

Guinea Pushes for Local Processing at Simandou Iron Ore Project

Rio Tinto’s Simandou iron ore development in Guinea may face additional costs as the government demands domestic refining. Guinea’s military-led administration insists that companies must build local refineries before exporting raw materials. This policy mirrors a growing wave of resource nationalism across Africa.

Guinea’s Planning Minister, Ismael Nabe, emphasized the government’s stance: “We want to build a refinery in Guinea.” The push could affect both Rio Tinto and Chinese-backed Winning Consortium Simandou (WCS), which control the four Simandou blocks. WCS includes China Baowu Steel Group, while Rio Tinto and Chinalco manage blocks 3 and 4.

This refining requirement aligns with Guinea’s broader goal of turning raw mineral wealth into long-term national development. The government expects mining to support other sectors, including agriculture, education, and infrastructure. Companies that fail to meet local investment expectations risk losing access, as seen with Emirates Global Aluminium’s revoked bauxite license.

Simandou’s Global Importance and Long Road to Production

Simandou is set to become the world’s largest and highest-grade new iron ore mine, with production targets reaching 120 million tonnes annually. First ore is expected in November 2025, marking a milestone for a project that’s been in development for nearly three decades.

Originally licensed to Rio Tinto in 1997, Simandou has survived multiple political upheavals, including two coups and several regime changes. A major part of the project includes a 600-kilometre railway and a new port on Guinea’s Atlantic coast. Rio Tinto will operate one of the two main mining sites linked to this massive infrastructure.

Despite challenges, Guinea’s mining sector is booming. The country became the world’s second-largest bauxite exporter, shipping nearly 100 million tonnes in the first half of 2025. Meanwhile, its total bauxite reserves are estimated at 7.4 billion tonnes.

SuperMetalPrice Commentary:

Guinea’s push for in-country mineral processing highlights a shift in the global resource strategy. For Rio Tinto and its partners, complying with local refining requirements may increase project costs but also strengthen their social license to operate. With global demand for high-grade iron ore rising, Simandou’s long-term value remains strong—provided stakeholders can align with Guinea’s developmental goals. Investors should monitor how these policy demands shape future global mining partnerships and supply chains.