Olen plant is one of the four copper production sites of Aurubis and specializes in the production of cathodes, Aurubis Rod, Aurubis Foxrod and Aurubis Bars & Profiles.
During the past several years, the site has successfully increased its input of recycling materials which poses high challenges to the treatment of air emissions, leading to extensive measures.
Since 2000 about 16,5 million € has been invested in environmental protection. In addition to reducing air emissions, the focus in 2017 has been on reducing water emissions as well. To lower the influence of effluents on the natural reserve Olens Broek, a new effluent pipeline was taken into operation at the end of 2015.
To improve resource efficiency, some products and production waste are processed at other Aurubis sites. This enhance the recovery of more valuable metals and limits landfilling.
In 2016, four 200 meter high wind turbines were built and commissioned at the Olen plant. This 20 million € investment project is a cooperation with a partner from the energy sector and two industry companies including Aurubis. Every unit has a capacity of 3.5 megawatt (14 megawatt in total). These wind turbines yearly provide 28 million kWh of electricity which is directly used at the sites of the industry project partners and reduces the CO2-emissions by 12,768 ton per year.
In the second half of 2021, a completely new hydro-metallurgical production process for the treatment of more complex input materials will start up at the Olen plant. A combined environmental and building permit for this major extension was applied for and successfully issued in 2018. This project will broaden the input materials at the site and represents an important milestone for the plant by setting the scene for a successful future.
The introduction the management system in accordance to ISO 14001 started at the rod production plant in 1998. Since 2006, the environmental management system for all activities of Aurubis Belgium is ISO 14001-certified. The latest recertification and switch to the latest requirements of the standard were successfully concluded in 2017. The external audits carried out as part of the certification of the management system include a review of the environmental data, of the fulfillment of legal provisions, and of the effectiveness of the operating processes. The quality management system is also certified according to ISO 9001.
The metal emissions to water per ton of copper output have been reduced by 91 % since 2004.
Metals in water emissions have been reduced over the years by optimization of the pH in the successive reactors of the waste water treatment plant and focus on tackling internal sources of pollutant emissions.
The energy consumption per ton of copper output have been reduced by 12 % since 2000.
Further implementation of feasible and cost-effective energy reduction measures are planned in the frame of an agreement with the Flemish Authorities.
The dust emissions to per ton of copper output have been reduced by 87 % since 2000.
Dust emissions to air are levelling off. By adaption of the off-gas system of the Contimelt installation as a whole and the filtering equipment specifically, further improvements are pursued.
Copper scrap input: 70.000 t
Production of copper cathodes: 325.000 t
Production of anodes: 250.000 t
Continuous Cast Rod: 220.000 t
Foxrod: 30.000 t
Bars and Profiles: 13.000 t