Environmental protection at Aurubis Finland Oy, Pori site

The Aurubis Finland production site is located in western Finland in Pori on the Kokemäenjoki River. The copper foundry and rolling mill are in a copper industrial park where other companies working with copper are located. The area of the site is about 78,000 m².

The rolling mill in Pori is a state-of-the-art hot and cold rolling mill, and it is fully integrated from casting to finishing. In 2018, our 260 employees produced 38,100 t of strip, sheet, plate, and circles as well as 54,400 t of shapes, of which more than half was for internal use. The selection of high-quality products covers a wide range of copper and copper alloys. Copper scrap is the main input for production; recycling materials account for around 75 % of the raw materials used in the foundry. The waste heat that arises in the foundry is sold to the local power plant Pori Energia. The waste heat produced during the hot rolling process is reused to preheat combustion air during processing.

Emissions of dust and volatile organic compounds (VOCs) are reduced to a minimum using afterburning and filters. Cooling water in the smelting process circulates in a closed system. Process water from the mill is treated at an external service company. Copper and oil residues are separated from cooling water and some process water. Last year, more than € 260,000 was invested in measures that improve environmental performance.

Environmental Protection - facts & figures
Air emissions

Metal emissions to air (Cu/Zn/Pb) in g/t of copper products sold

At the beginning of January 2013, a project to improve the degree of filter house utilization started and improved the degree of utilization about 5 % during 2013. The metal emissions in exhaust gases have significantly decreased over the years..

Energy consumption

Total specific energy consumption in MWh/t Cu of copper products sold decreased during 2018 because of more effective energy consumption.

Propane consumption decreased although production increased during 2018.

Environmental measures that have been implemented (“Milestones”)
Air emissions
  • Recuperator: Energy consumption and VOC level decreased (completed January 2018)
  • CO-O2 gas analyzer (transferable) (completed May 2018)
Water emissions
  • Copper: Raw material hall and new scrap container with electro-mechanical opening of covering plate
    (completed November 2018 - 2019)
Current important environmental targets and measures
Air emissions

New filters in filter house

Date:

  • October 2020

Status:

  • In the planning stage
Water emissions

Legionella treatment facilities

Date:

  • 2020 ongoing

Status:

  • in progress

More pH measurements in rolling mill

Date:

  • 2020 ongoing

Status:

  • in the planning stage
Waste management

New press waste bins for paper and energy waste (cooperation with neighboring company)

Date:

  • January 2020

Status:

  • in progress

Extend emulsion usage time at cold rolling

Date:

  • October 2019

Status:

  • in progress
Energy

Reduction of district heat consumption

Replacing it with internal waste heat from launder gases in the foundry.  First step is to use the waste heat from launder gases for heating water circulation

Next steps:

  • Sensor installation in December 2019. Use will start in January 2020

Status:

  • Sensor installation completed

 

Reduction of propane consumption: pre-heating furnace, change of heating program

Next steps:

  • Started October 2018

Status:

  • in progress

 

Two new CO-O2 analyzers for controlling the use of propane

Next steps:

  • Installation of the analyzers in January - February 2020

Status:

  • in progress

New burner for adjusting the right temperature for preheating air

Next steps:

  • 2020

Status:

  • in progress

Reduction of diesel consumption: replacing diesel forklifts with electric forklifts

Next steps:

  • First forklift in 2016, second 2018, third 2020

Status:

  •  ongoing
Contact
Avatar
Miia Kiviö

Technology Manager

Phone + 358 40 641 6529
Send e-mail
Avatar
Minna Eerola

Senior Advisor Quality, Environment & Energy

Phone +358 40 5256117
Send e-mail