The Middelburg operation saw revenues rise by 10% for the quarter to December as the amount of ferrochrome produced rose to 2,282 tonnes (from 2,031). Net profits were R2.53mln (£0.14mln) compared to R1.31mln (£0.07mln) three months earlier.
Net profit margin rose to 10.6% and Jubilee added it expects this to rise to its 12% target in the current quarter.
The platinum trial was of 30-tons to refine the processes ahead of processing an estimated 85,000 tons at Middelburg.
Jubilee has also recently negotiated substantial tailings treatment contracts with mining giants ASA and Hernic, both of which will need dedicated plants at the mine sites to extract platinum and its associated metals.
Talks are also underway over an increase in electricity sales from Middelburg's power plant to the South African grid as well as extending its current short term power purchase agreement to five years.
Leon Coetzer, Jubilee’s chief executive, said: "The Middelburg operations have maintained its performance, meeting the targeted throughput and gross profit margins.
“The platinum surface processing projects will allow Jubilee to produce low cost platinum concentrates for further processing at the smelters in the near term.
“The two projects will target a combined throughput of approximately 80,000 tonnes per month of platinum containing surface material.
“These projects have the potential of significantly transforming Jubilee into a low cost platinum producer from surface operations underpinned by the Tjate platinum exploration project."