Materials

EN1 Materials used by weight

Mined rock, milled ore, and concentrate production increased in 2016, while smelting materials are at a similar level as in previous years. Boliden has included tonnage of rock, ore and concentrates in the material used in its reporting. Waste rock and sand are then reported as output under EN23 Total Waste. Some of the concentrate produced in the mines is sold to external parties. The total smelting material feed comprises concentrates both from Boliden’s own mines and from external mines, purchased secondary materials, and secondary materials sent from one smelter to another.

Materials are mostly weighed in connection with loading and/or charging (ore, concentrates, and most smelting materials). The mined rock figure is based on calculations (waste rock and ore). A minor part of input materials is calculated from input and stock.

Materials used by
weight, ktonnes

2014

2015

2016

Mined rock

85,357

75,317

100,765

Whereof milled ore

46,000

44,000

49,000

Whereof concentrate
produced

961

1,043

1,249

Smelting materials

2,639

2,654

2,671

Other materials

625

670

786

Whereof non-renewables

135

133

150

EN2 Percentage of materials that are recycled input materials

Boliden uses its own and other companies’ by-products and residues for the extraction and recycling of metals. The Boliden Rönnskär smelter began using a new electronic scrap recycling facility in 2012, making Boliden among the world leaders in e-scrap recycling. Boliden Bergsöe, which recycles 70,000 tonnes of lead acid batteries and other lead scrap per year, is, furthermore, the only secondary lead smelter in the Nordic region.

Metals can be recycled endlessly without any deterioration in their quality. It is important, therefore, that electronic materials and scrap, such as telephone cables, copper roofs and copper pipes, from the demolition or construction of buildings and infrastructure is reutilised. The Rönnskär smelter produces 45% (50) of the gold, 25% (30) of the copper, 20% (30) of the silver, and 65% (70) of the zinc from secondary raw materials.

The recycling input rate (RIR) shows the fraction of secondary materials in the total input to Boliden Smelters. Recycled materials include secondary materials from external sources and secondary materials sent from one plant to another within the Group. By-products and non-product outputs recirculated internally at the sites and slag sent from smelters to mines are not included.

Percentage of
recycled materials

2014

2015

2016

Total secondary feed, tonnes

304,200

296,800

299,300

Total feed
(primary and secondary), tonnes

2,639,000

2,654,000

2,671,000

Recycling rate

12%

11%

11%