Zambia has cleared two major copper producers to resume exports of sulphuric acid to Democratic Republic of Congo, signalling a cautious easing of restrictions on a critical mining input.
Trade Minister Chipoka Mulenga said authorities had authorised Chambishi Copper Smelter and Mopani Copper Mines to restart shipments after domestic stock levels recovered.
Zambia, Africa’s second-largest copper producer, generates roughly 2 million metric tons of sulphuric acid annually, mostly as a byproduct of smelting. The chemical is essential for copper processing, particularly in Congo’s mining sector, which relies heavily on imports.
Exports had been curtailed earlier to protect local supply, tightening availability across the border. The decision to resume shipments suggests improving conditions at home, though the government is proceeding carefully.
Mulenga said only “limited quantities” would be allowed initially to avoid disrupting domestic demand, adding that export permissions could be expanded if supply continues to stabilise.
A separate authorisation has also been granted to Alliswell Investment Limited to export 5,000 metric tons, according to a document seen by Reuters.
The move comes as data from logistics firm Access World shows Congo’s imports of processing chemicals dropped sharply in the first quarter, underlining the impact of earlier restrictions.
There are still signs of friction within the system. An industry source said Mopani had yet to receive its export permit, and neither the company nor Chambishi responded to requests for comment.
Mulenga indicated that the resumed flows would help meet demand from mining operations in Congo, including supply arrangements linked to Glencore and Chinese-owned mines.
The episode highlights how tightly interwoven the region’s copper supply chain has become. When Zambia restricts output of a byproduct, the effects ripple quickly into Congo’s production capacity.
For now, exports are back, but under watch. Authorities appear determined to avoid repeating shortages at home while keeping a crucial regional trade artery open.
