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New Sandvik crushers on-site at Tongon

New Sandvik crushers on-site at Tongon

Randgold Resources’ Tongon is a model gold mine in the Ivory Coast.

The first two new Sandvik crushers are already on-site at Randgold Resources’ Tongon gold mine in Côte d’Ivoire, chief executive Mark Bristow has said.

The Sandvik team was working hard in support of the mine team to ensure that the project would be completed early in the fourth quarter, added Bristow.

Planned ramp-up

This year’s planned ramp-up in production had not been achieved due to the need to expand the flotation circuit and the mechanical failure of the recently installed Vibrocone crushers, intended to improve the recovery and throughput rate.

Expansion of the flotation circuit was now underway. Crusher supplier Sandvik had agreed to replace the Vibrocone crushers with conventional cone crushers, and combine them with an upgraded flowsheet, including additional equipment and circuits.

Increased mill throughput

Bristow said this exercise should increase mill throughput to its design capacity and improve the quality of the crushed product.

Tongon’s performance was therefore expected to show a steady improvement in the second half of the year.

Flotation circuit

However, because of the ground that had already been lost and the inevitable operational impact associated with the commissioning of new equipment, completion of the flotation expansion was only expected by year end.

Tongon’s 2014 production was likely to fall within 10% short of its original guidance of 260 000 ounces.

“Considering the challenges Tongon has had to deal with, this is a creditable performance and a tribute to the team and the ongoing support from Sandvik,” said Bristow.

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