Rio Tinto’s Zulti South EPC to CHEC: mine-life and layout notes for engineers
Reviewed by Joe Ashwell

First reported on International Mining – News
30 Second Briefing
Rio Tinto has lifted the suspension on Richards Bay Minerals’ Zulti South project in South Africa, approving a US$473 million investment to extend the heavy mineral sands operation’s life to around 2050. Engineering, procurement and construction for Zulti South has been awarded to China Harbour Engineering Company (CHEC), signalling a major Chinese contractor role in a Tier 1 titanium dioxide feedstock and zircon asset. The project will shift production from the existing Zulti North lease, with long-term implications for dredge mining layouts, tailings deposition and coastal dune rehabilitation planning.
Technical Brief
- Suspension on Zulti South works, imposed in January 2020, has now been formally lifted.
Our Take
Among the 1106 Mining stories in our database, Rio Tinto features most frequently in relation to iron ore and aluminium, so an EPC award at Richards Bay Minerals signals the group is again putting capital and contracting attention into its mineral sands business after several years of operational and social disruption in South Africa.
A mine life horizon out to 2050 at the Zulti South project effectively locks in long-term heavy mineral feed for downstream smelting assets at Richards Bay, which tends to reduce Rio Tinto’s appetite to divest or mothball this corridor compared with shorter-life mineral sands operations elsewhere.
The long suspension since 2020 means CHEC will be stepping into a partially developed brownfield environment rather than a greenfield site, which usually compresses schedule risk on earthworks and infrastructure but raises interface risk with legacy RBM plant and community agreements around the Zulti North lease area.
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.
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