Metso Outotec and Boliden renew service contract for Aitik copper mine

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Metso Outotec and Boliden have signed an extension of their service contract for Boliden’s Aitik copper mine in Gällivare, northern Sweden.

The “3+2-year extension” of the Life-Cycle Services agreement covers the supply of mill lining, chute lining solutions, preventive maintenance of the grinding circuit and recycling of used wear parts, the mining OEM said. The first part of the contract has been booked in Metso Outotec’s orders received in the September quarter of 2020.

The contract is a performance-based cost-per-tonne agreement, in which Metso Outotec gets paid according to the output of the customer’s process. The goal is to ensure the availability of the grinding circuit and to maximise valuable production time, striving for a common goal that benefits both parties, the company said.

Metso Outotec and Boliden have cooperated since the 1960s. Throughout the decades, the collaboration has evolved to meet new emerging needs, while continuing to improve uptime and annual production, Metso Outotec said.

“Safety is Boliden’s top priority and enhancing it is also embedded in the scope of the new contract,” the OEM said. “Metso Outotec will provide solutions that simultaneously cut maintenance time and increase the wear life of parts even further.”

The new contract also focuses more on the management of worn wear parts, with Metso Outotec developing capabilities to recycle and dispose of them more sustainably. The AG mills in Aitik will continue to use Metso Outotec’s innovative Megaliner™ mill lining.

Megaliner helps to maximise the availability of large mills by using an innovative design that speeds up liner replacement. The larger-than-average liners mean fewer individual pieces are needed. Megaliner also has fewer attachment points compared with conventional liners, further improving installation and removal time, Metso Outotec says. It also improves worker safety during maintenance as the liners are bolted into position from outside the mill.

The pebble mills and two regrind mills at Aitik will be lined with rubber and Poly-Met mill linings, Metso Outotec said.

Aitik is one of the largest copper mines in Europe. In 2019, the mine produced close to 41,000 t of copper, employing nearly 800 people.

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