Mine to Metal

From ore body to cast ingot.

We control each stage of antimony production — extraction, hydrometallurgical processing, electrowinning and casting — at our operations in Zimbabwe.

01 — Processing

Leaching & Electrowinning

Antimony is dissolved from concentrate into solution in the leaching circuit, then recovered as metal onto cathodes in the electrowinning cells.

The leaching tank drives the chemistry; the row of electrowinning cells plates out the metal before it is melted and cast.

Hydrometallurgical route · on-site recovery

Leaching tank and electrowinning cells at the Tennant Africa processing plant in Zimbabwe — Leaching tank and electrowinning cells — processing plant, Zimbabwe.

Stacked antimony ingots at 99.7 percent purity, Kwekwe, Zimbabwe — Cast antimony ingots, 99.7% Sb — Kwekwe, May 2026.

02 — Finished Metal

Cast to 99.7% Antimony

Recovered metal is melted and cast into ingots at commercial grade, stacked and prepared for dispatch to industrial buyers.

Supplied for flame retardants, lead-acid batteries, alloys and defence applications worldwide.

99.7% Sb · commercial grade · ready for dispatch

The Team

Oussama Razouki

Partner

An engineer by training, Oussama leads the firm's strategy and commercial operations, connecting African production to international markets.

oussama@tennantafrica.com

Boris Tam

Partner

A French engineer based in Zimbabwe, Boris oversees mining and refining on the ground, taking local ore through to finished 99.7% antimony ingots.

boris@tennantafrica.com

Timothy Maponga

Partner

A high-level chemist by background, Timothy brings deep technical expertise to the refining process and works hands-on across day-to-day plant operations.

tim@tennantafrica.com

Awelani Ndou

Plant Manager

Based at the refinery, Awelani runs the plant floor day to day, keeping crews, equipment and output on schedule from raw ore through to finished ingots.

awelani@tennantafrica.com