Pallinghurst bringing in new tech to boost platinum business

Kell Process

The Kell Process has been developed for extraction of platinum group metals (PGM), gold silver and base metals from sulphide flotation concentrates without having to use smelting. The hydrometallurgical process has been successfully demonstrated on several different flotation concentrates, including those from the UG2 and Platreef in South Africa and polymetallic concentrates from North America. It has been shown to provide high (95 to 99 %) and selective extraction efficiencies for the key base metals and precious metals, i.e. Pt, Pd, Rh, Au, Ni, Co, Cu.

Kell presents leap forward in PGM and base metal concentrate processing technology, binging enhanced economics by reduced power costs, ease of processing, and environmental benefits.


Existing PGM producers (majors with own smelters) - expansions, smelter bottlenecks for UG2 due to chromite limitation, cost reduction, overall recovery increase

Existing PGM producers (juniors who sell concentrate to smelters) - increase payability and recovery, become independent of majors

PGM Explorers/developers - provides better revenue stream and maintains independence

Base metal and polymetallic (BM and PGM) producers and explorers - concentrate sellers who are seeking to increase overall revenues. Kell can treat a bulk concentrate rather than having to produce individual concentrates to suit smelter terms. Increase metal payability, reduce shipping costs and smelter penalties and grad constraints reduce float recoveries.

Complex ores - Kell can recover base metals and Au/Ag from complex ores, a separation that cannot be processed by conventional means.

Kell Process Benefits

  • No requirement to smelt concentrates
  • Can be located next to the flotation concentrator for on-site beneficiation of minerals
  • Reduced costs and increased recovery and revenue compared to smelting contracts
  • Reduced energy requirements and electricity consumption
  • Kell can process a bulk Ni/Cu/Co/PGM/Au concentrate
  • Final metal products tailored to users marketing requirement
  • Reduced carbon emissions and carbon tax liability