Geomechanics.io

  • Free Tools
Sign UpLog In

Geomechanics.io

Geomechanics, Streamlined.

© 2026 Geomechanics.io. All rights reserved.

Geomechanics.io

CMRR-ioGEODB-ioHYDROGEO-ioQCDB-ioFree Tools & CalculatorsBlogLatest Industry News

Industries

MiningConstructionTunnelling

Company

Terms of UsePrivacy PolicyLinkedIn
    Projects

    Hormuz Strait closure and sulphur shock: implications for copper leach projects

    April 14, 2026|

    Reviewed by Joe Ashwell

    Hormuz Strait closure and sulphur shock: implications for copper leach projects

    First reported on MINING.com

    30 Second Briefing

    A prolonged closure of the Strait of Hormuz, which normally carries over 40% of global sulphur exports, combined with China’s 2.7‑million‑tonne annual sulphuric acid export ban from 1 May, is driving sulphuric acid prices above $500/t and threatening about 20% of global copper supply that depends on acid leaching. Ivanhoe Mines’ Kamoa‑Kakula complex, hosting Africa’s largest copper smelter, produced 117,871 tonnes of high‑strength sulphuric acid and 71,417 tonnes of copper anode in Q1, giving it a cost and supply advantage as a net acid seller. Despite this, Ivanhoe has cut 2026 copper anode guidance to 290,000–330,000 tonnes and is implementing contingency measures, including advanced diesel purchases, to sustain operations during the US‑led war on Iran.

    Technical Brief

    • Closure of the Strait of Hormuz removes about 50% of global seaborne sulphur supply, tightening acid feedstock.
    • China’s 1 May export ban targets sulphuric acid by-product from domestic copper and zinc smelters.
    • Asia’s largest economy had been exporting ~2.7 Mt/y of sulphuric acid, with Chile as top destination.
    • Phosphate fertiliser production consumes 54% of global sulphuric acid demand, versus 10% for metals and mining.
    • Within metals and mining, copper smelting accounts for 62 Mt of an 89 Mt sulphuric acid consumption base.
    • Realised sulphuric acid prices have already exceeded US$500/t under current supply constraints.
    • Kamoa-Kakula’s smelter produced 63,671 t copper in anode plus 117,871 t high-strength sulphuric acid in Q1.
    • Additional 7,746 t of copper in blister were produced at the Lualaba smelter in Kolwezi during the quarter.
    • Kamoa-Kakula’s resource stands at ~1.3 Bt grading 2.65% Cu, containing ~34 Mt copper metal.
    • Ivanhoe’s contingency planning for the US-led war on Iran includes forward purchasing of diesel for operations continuity.

    Our Take

    Ivanhoe Mines has been a recurring name in our recent coverage, from Kamoa-Kakula guidance cuts in early April 2026 to US-facing offtake discussions for Kipushi concentrates, so any disruption to sulphur or sulphuric acid flows via the Middle East would compound an already complex logistics and marketing picture for the company’s African assets.

    In our database of 1212 Mining stories, copper consistently appears alongside critical-mineral themes and US strategic stockpiling moves (e.g. the February 2026 US$12 billion stockpile piece), suggesting that any shock to Middle East sulphur exports could quickly be framed not just as a cost issue but as a supply-security concern for Western copper and fertiliser buyers.

    Geotechnical Software for Modern Teams

    Centralise site data, logs, and lab results with GEODB-io, CMRR-io, and HYDROGEO-io.

    No credit card required.

    • Save and export unlimited calculations
    • Advanced data visualisation
    • Generate professional PDF reports
    • Cloud storage for all your projects

    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

    Related Articles

    US DOE $10M critical minerals R&D: process insights for mining engineers
    Mining
    about 11 hours ago

    US DOE $10M critical minerals R&D: process insights for mining engineers

    The US Department of Energy has awarded $10 million via the Critical Materials Innovation Hub to seven early-stage R&D projects targeting more efficient recovery and refining of rare earth elements, gallium, copper and other critical materials. Funded work includes chloride-based molten salt electrolysis for heavy rare earth production at Case Western Reserve, hydro and bio-hydrometallurgical copper extraction at Colorado School of Mines, and nanobubble–surfactant–reactive oxygen leaching of copper sulphides at the University of Arizona. FAST Metals, Indium Corporation, Oak Ridge National Laboratory and the University of Illinois will trial solid-phase extraction, advanced ion-exchange resins and redox-adsorbents to recover gallium and mixed rare earth oxides from bauxite-alumina circuits, zinc refinery residues and industrial byproduct streams.

    Maglut Heavy Industries rare earth strategy: ARC-1 process insights for mine planners
    Mining
    about 11 hours ago

    Maglut Heavy Industries rare earth strategy: ARC-1 process insights for mine planners

    Maglut Heavy Industries is developing a chromatography-based rare earth processing platform at its pilot-scale Long Beach, California facility, reporting 99.9%+ purity for individual rare earth oxides using its ARC-1 water-based separation process. The company designs and manufactures its own resin and ligand systems, aiming for globally competitive costs versus conventional solvent extraction as US defence contractors face January 2027 rules to eliminate Chinese rare earth magnets. A demonstration-scale plant is planned to be fully operational by August 2027, producing commercial rare earth oxides and potentially expanding to other critical minerals.

    Gold price retreats from three‑month high: risk notes for mine planners
    Mining
    about 11 hours ago

    Gold price retreats from three‑month high: risk notes for mine planners

    Gold retreated from a three-month high after July US PCE inflation printed at 3.7% headline and 3.3% core, with Comex December futures down 1% to $4,649.10/oz and spot off 1.4% at $4,592.53 by late morning in New York. The pullback follows a 14% August surge in bullion, driven by US Treasury bond-market intervention and a 28-tonne weekly inflow into gold-backed ETFs, ahead of Kevin Warsh’s first Jackson Hole speech as Fed chair. Gold and silver miners still post outsized August gains, with Eldorado up 55%, Equinox 53% and Newmont 41%.

    Related Industries & Products

    Mining

    Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.

    CMRR-io

    Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.

    HYDROGEO-io

    Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.

    GEODB-io

    Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.

    AllGeotechnicalInfrastructureHazardsEnvironmental