![]() |
| Ivanhoe |
Kamoa-Kakula sulphuric acid production has become a major earnings support for Ivanhoe Mines as tight acid availability across the African Copperbelt lifts by-product revenue. The company’s new direct-to-blister smelter in the Democratic Republic of Congo is turning a regional supply constraint into a margin advantage.
Kamoa-Kakula sulphuric acid output reached 117,871t in the first quarter. Ivanhoe sold 107,700t to six offtakers at an average realised price of $467/t.
Kamoa-Kakula sulphuric acid pricing is now moving higher. Ivanhoe recently signed a June delivery contract at $725/t and plans to re-tender and reprice remaining contracts by the end of the quarter.
The shift is strategically important because many copper producers in the DRC and Zambia consume sulphuric acid for leaching. Kamoa-Kakula, by contrast, produces acid as a by-product, giving Ivanhoe a natural hedge against the same squeeze hurting regional competitors.
Acid Credits Change the Kamoa-Kakula Cost Structure
Sulphuric acid has become one of the hidden drivers of Copperbelt copper economics. The DRC and Zambia rely heavily on acid for solvent extraction and leaching operations, and supply has tightened because of Middle East sulphur disruption, Zambian acid export controls and smelter maintenance in the region.
Ivanhoe said around 80% of sulphur imported into Africa moves through the Strait of Hormuz. That makes the Copperbelt highly exposed to disruption in Middle Eastern sulphur flows.
The Kamoa-Kakula smelter changes Ivanhoe’s exposure. Instead of paying higher acid costs, the operation is selling acid into a tight regional market.
Smelter operating costs averaged $0.27/lb in the first quarter. Sulphuric acid by-product credits more than offset that cost at $0.32/lb.
This cost structure helped lower Kamoa-Kakula’s cash cost to $2.58/lb from $2.99/lb in the previous quarter. The result was slightly below the lower end of Ivanhoe’s 2026 guidance range of $2.60-3.00/lb.
The smelter also reduced logistics costs. Kamoa-Kakula exported 99.7% pure copper anodes instead of 35-40% copper concentrate, cutting logistics costs to $0.22/lb from $0.70/lb in the fourth quarter.
That shift matters because the smelter moves Ivanhoe further down the value chain. Higher-grade exported material reduces transport intensity, lowers logistics exposure and improves revenue capture.
Kamoa-Kakula generated revenue of $862mn, operating profit of $221mn and Ebitda of $397mn in the quarter. That represented an Ebitda margin of 46%.
However, Ivanhoe’s group results were still weaker. Adjusted Ebitda fell to $191mn from $226mn a year earlier, while the company reported a $2mn quarterly loss compared with a $122mn profit a year earlier.
The loss mainly reflected Ivanhoe’s $42mn share of loss from Kamoa Holding after Kamoa-Kakula booked a $183mn tax adjustment to settle DRC tax claims from previous years. This means the headline loss should be separated from the operational value of the smelter and acid credits.
Smelter Ramp-Up Links Copper Recovery to Regional Supply Strategy
Kamoa-Kakula’s copper output remains affected by disruption from last year’s seismic activity. The operation produced 61,906t of copper in concentrate in the first quarter, down from 133,120t a year earlier.
Contained copper in blister and anode totalled 71,417t. This included 63,671t from the on-site smelter and 7,746t from the Lualaba Copper Smelter in Kolwezi.
Ivanhoe maintained Kamoa-Kakula’s 2026 guidance at 290,000-330,000t of contained copper in anode or blister. Its 2027 guidance remains at 380,000-420,000t.
The company still expects production to return to more than 500,000 t/yr from 2028, with a target cash cost below $2/lb. Reaching that level will depend on mine recovery, smelter utilisation, power stability and logistics performance.
The smelter is currently operating at around 60% of design capacity. It is producing acid at about 1,350 t/d, but further ramp-up is constrained by concentrate availability.
Ivanhoe is assessing purchases and toll treatment of local third-party copper concentrates to raise smelter utilisation and improve margins. This could make Kamoa-Kakula more important to the regional concentrate market.
That point matters globally. Chinese smelters continue to face negative treatment charges, showing how tight copper concentrate supply has become. If Kamoa-Kakula becomes a larger third-party treatment option, it could offer an alternative regional route for selected Copperbelt concentrates.
Logistics are also changing. The first shipment of Kamoa-Kakula anodes moved through the Lobito railway corridor during the quarter and reached the Atlantic port of Lobito before shipment to Europe for refining.
Ivanhoe said the Lobito rail route takes around seven days from the DRC Copperbelt to the port. That compares with more than three weeks by truck to Durban or Dar es Salaam.
Flood damage in Angola temporarily halted Lobito shipments, but movements are expected to resume later this month. If reliable, the corridor could become a major strategic route for Central African copper exports.
Energy remains another critical variable. Ivanhoe has secured five months of diesel supply to protect operations from global supply-chain disruption.
The company is also developing a 60MW solar and battery storage project expected to deliver baseload power to Kamoa-Kakula from early in the third quarter. It plans to double on-site solar capacity to 120MW by the end of 2027.
These steps show that Kamoa-Kakula is no longer only a copper mine story. The asset now combines mining, smelting, acid supply, anode exports, rail logistics and on-site power strategy.
That integrated model gives Ivanhoe a stronger position in a region where other copper producers are exposed to acid shortages, sulphur disruption, diesel risk and long trucking routes.
The Metalnomist Commentary
Ivanhoe’s smelter has turned Kamoa-Kakula into a more strategic Copperbelt asset, not just a high-grade copper producer. In a market where acid, logistics and power can decide margins, the operation’s by-product and infrastructure advantages may become as important as its copper grade.











We publish to analyze metals and the economy to ensure our progress and success in fierce competition.