About Nordkalk

Nordkalk is the leading company providing limestone-based products and solutions in Northern Europe. Delivering essential raw material to numerous industries and focusing on sustainable solutions , Nordkalk helps our customers reduce their environmental impact. The company’s solutions contribute to clean air and water as well as the productivity of agricultural land. 


Mining locations


The Uses of Limestone


Limestone is the most widely used building material in the world. It is used as a raw material in building materials, e.g. bricks, plaster and cement. Lime is used for soil stabilisation, aggregates in road construction and limestone fillers in asphalt.

Metals & Mining

Limestone and lime are used in various processes in metals, mining and steel industries.

Pulp & Paper

Lime is used in pulp industry’s causticising cycle. Limestone is used in paper pigments PCC (Precipitated Calcium Carbonate) and GCC (Ground Calcium Carbonate)


Limestone is needed to adjust the pH value of the soil and making it optimal for growing plants. It is also included in fodder for poultry and livestock.


Increased environmental demands require more advanced technology and purification of emissions to air, water and soil. Limestone is used for all of these processes.

Chemical Industry

Limestone is used in chemical products, plastic, rubber, paints and coatings,fertilizers, adhesives, glass and ceramics, and sugar.

The Limestone Value Chain



The Beginning

On November 26 1898, the Board of Directors of Pargas Kalks Aktiebolag gathered for their first meeting.

The limestone that was quarried in Pargas was burned and sold to paper mills, ironworks and pulp factories and in the 1910s a start was made on manufacturing cement. Crushed limestone was used primarily for agricultural purposes


Operations begin in Lappeenranta

In 1910 Pargas Kalk also began operations in Lappeenranta and built the first shaft kiln. Since the beginning the two towns have formed the core of company’s lime operations in Finland.


Expansion in Finland

In the 1940s and 1950s expansion of activities in Finnish construction material industry.


Name Change

Until the end of the 1960’s and even into the 1970’s, lime continued to be used as building material, in the pulp industry and as agricultural lime. But when Finland got a modern steel industry the need arose for new kinds of burnt lime. It was then that the development of new products and processes began, a trend that continues even today. In the 1970’s, the company also invested heavily in developing competitive agricultural lime, and the quarries in Siikainen and Vampula came into the picture. 

In 1978 Pargas Kalk changed its name into Partek.


Expansion to Sweden

In the early 1980’s, the largest deposit of limestone in the Nordic countries, Storugns on the Swedish island of Gotland, was incorporated into Partek’s operations through the setting up of a joint venture with Euroc Mineral.

In the mid-1980’s, Partek’s lime operations had grown so strong that Partek made its goal to become the leading producer of limestone-based products in the Nordic region.


Nordkalk Oy Ab becomes an independent company

Partek’s lime business was turned into an independent company, Nordkalk Oy Ab, in August 1991.


Expansion to Baltics and Poland

A limestone quarry and a dolomite quarry were purchased in Estonia, and in 1998, Nordkalk took over the leading Estonian producer of calcium oxide, Rakke Lubjatehase AS.

Nordkalk started its expansion in Poland and opened its first branch office in Gdansk in 1997. The company was named Partek Nordkalk Polska Sp. z o.o. In 1999, a lime plant and a deposit were acquired in Slawno, about 120 km south-east of Warsaw.


Expansion in Poland

A new grinding plant in Szczecin in Northern Poland was brought into use in the beginning of the year 2000.

Nordkalk acquired a limestone company in Miedzianka, Southern Poland. It included one of the largest limestone deposits in the country. The deposit of Wolica in southern Poland was granted mining rights and a new mill was completed in 2001.


Rettig Group acquires remaining 51% stake

On 19 May 2010, Rettig Group signed a share purchase agreement with the co-owners of Nordkalk. As a consequence, Rettig’s ownership in Nordkalk increased from 49% to 100%. Rettig Group had had a small minority stake in
Nordkalk since 2003.


Co-operation with ArcelorMittal

In 2019 Nordkalk started to operate world’s leading steel producer’s ArcelorMittal’s limekilns in Eisenhüttenstadt, Germany. Co-operation agreement was signed on 14th of March in 2019. The agreement creates good prerequisites for Nordkalk to grow in Central Europe.


Part of the SigmaRoc Group

Nordkalk becomes part of SigmaRoc PLC, a specialist materials group based in London, UK.

*subject to be completed in August, 2021

SigmaRoc to install carbon capture facility


RightCast Ltd RightCast Ltd We are pleased to welcome the RightCast team into SigmaRoc’s Precast