Growing uncertainty over Guinea’s bauxite export policy, alongside severe disruption to alumina supply chains caused by the closure of the Strait of Hormuz, emerged as key themes at the Fastmarkets Bauxite & Alumina Conference in Miami on March 24-25, with delegates warning of heightened price volatility and shifting trade flows.

Until now, aluminium has been hard to move, not hard to find. Global aluminium supply had remained technically intact, even as output was curtailed in parts of the Gulf, inventory buffers were drawn down or repositioned, and shipping through the Strait of Hormuz was severely disrupted.

Global aluminium producers face heightened uncertainty over power supplies, with oil and gas prices elevated by the closure of the Strait of Hormuz, through which around 20% of global oil and liquefied natural gas (LNG) flows, sources told Fastmarkets.

Rio Tinto Aluminium is expanding its footprint beyond its historic hydro-powered Canadian base, targeting Europe, Asia and Latin America as part of a deliberate diversification strategy, according to the unit’s chief executive officer.

The European Union’s Industrial Accelerator Act (IAA), published on Wednesday March 4, was a new step in the bloc’s efforts to decarbonize heavy industry and to support strategic supply chains in sectors such as steel, cement and aluminium.

The aluminium market is being pulled in two directions by the Middle East conflict: upstream feedstocks sit in temporary buffer stocks, while delivering metal to consuming regions is becoming increasingly difficult.

Jeddah in Saudi Arabia and Port of Sohar in Oman are becoming tactical workarounds for base metal exports blocked by the Strait of Hormuz closure, with cargo transiting via land-bridge to other Gulf states, such as Bahrain and the United Arab Emirates – though capacity constraints and elevated logistics costs limit availability, sources with direct visibility of Gulf supply chains told Fastmarkets.

The Mexican aluminium market might be strongly affected by the closure of the Strait of Hormuz, with supply constraints and consequently higher premiums, market participants told Fastmarkets on Tuesday March 10.

Guinea, the world's biggest bauxite producer, is considering plans to compel miners to curb exports of bauxite in a bid to halt the slump in the price of the key raw material for aluminium production, sources told Fastmarkets on Monday March 9.

QatarEnergy, the state-owned shareholder of Qatar aluminium producer Qatalum, has suspended the production of aluminium as the conflict between Iran, Israel and the US intensified, it said on Tuesday March 3.