Profitable business

in a responsible manner

Continuous improvement of energy efficiency

The production processes of the mining and lime industry are energy intensive. Quarrying, crushing, grinding and calcination of limestone all require significant amounts of energy. Nordkalk continuously strives for improved energy efficiency, which can be reached through optimised processes and capacity utilisation, and by making reduced energy consumption a priority in new investments and repairs. 

Reduced energy consumption through optimised processes and capacity utilisation 

Automatic process optimisation into use at the kiln in Pargas

The automation system of the limekiln in Pargas was renewed in 2016; the new automatic optimization system adjusts the kiln’s operation parameters for obtaining uniform quality and low energy consumption.

The system monitors constantly the measurements of the process and product quality in order to level out changes in the process. It also decreases the possibility for production interruptions. The automatic process optimization has been calculated to save annually upto 4000MWh heath energy

Biofuel tested at Ignaberga in Sweden

Ignaberga plant 31AUG2015 1200

In 2015, Nordkalk tested the use of biofuel at its facility in Ignaberga. The fuel is a surplus product from ecological feed production. The tests have given good results, and so in 2016, Nordkalk invested in equipment to adjust the production and equipment for the switch from fossil fuels to biofuels. The stone drying in Ignaberga runs now 100% on biofuel.

The tests have given good results for both the environment and Nordkalk.

Nordkalk was granted climate investment support for the Ignaberga project by the Swedish Environmental Protection Agency in December 2015. The support was granted in the context of the Climate Leap (Klimatklivet), an effort to reduce greenhouse gas emissions. Nordkalk is one of twelve companies receiving support for "measures that demonstrate the greatest sustained reduction of greenhouse gas emissions per crown invested".

Read also how residual heat from lime kilns is used in district heating 

Energy Sources

Alternative Fuels
Fuel oil
Natural Gas
Gas coke

About a third of the energy Nordkalk consumes comes from coal, which is used in lime burning, as are oil, natural gas and coke oven gas. Electricity is used for crushing and grinding, and fuel oil, natural gas and liquid petroleum gas for the drying process. 

Leader in Northern Europe

Nordkalk is the leading limestone company in Northern Europe. We deliver essential raw materials to numerous industries, and our solutions contribute to clean air and water as well as productivity of agricultural land.