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About us - Leading kaolin producer

Sedlecký kaolin was founded in 1892 and became a leading Czech producer of kaolin. Our most important quarry site is the Karlovy Vary region, where we mine kaolin of the highest quality.

Visions and values

We are proud to be a reliable supplier of first-class quality products. We want to strengthen this strong position and develop it further. Thanks to constant research and development of the most modern technologies, we can bring to customers an ever wider range of products. We could not do that without a team of satisfied employees. That is why we develop their talent and create a motivating work environment for them. In addition, as an ecologically responsible company, we want to work with respect for the environment and focus on reclamating the landscape of the Karlovy Vary region.

Quality control and certificates

The quality of our products is under constant control. We verify its highest standards by regular tests in laboratories.

ISO 9001 certification -
ISO 14001
Quality control
Work safety.

Company history

Over the course of three centuries, the method of mining and processing of the raw material has changed fundamentally. However, we still hold the position of a globally recognized producer of kaolin.

The first attempts to produce porcelain from local raw materials in the Karlovy Vary region and the beginning of kaolin mining.

Porcelain production in the Karlovy Vary region expands.

18th Century
19th Century

1892 / Foundation

Successful kaolin mining in the Karlovy Vary region and a flourishing porcelain industry initiate the foundation of Zettlitzer Kaolinwerke AG.

1892-1912

Aquiring the competition

The company grows by acquiring small kaolin producers – Zebisch & Pfeiffer, Lorenz and Mottl.

1924

International standard set

Zettlitz Kaolin is declared a kaolin standard at the IUPAC Congress in Copenhagen. The trademark has survived all subsequent organizational and ownership changes.

1927-1938

Dynamic growth

The ever-growing company acquires more and more plants, particularly in Saxony. In 1938, it already owns nine deposits, ten washing plants, two brickyards, a coal quarry and a porcelain factory (Merklín).

1945

Nationalization

After the demise of the company as a consequence of the war, all kaolin mining and processing in the Karlovy Vary region is nationalized. Activity is recommenced by the national enterprise called Sedlecko–Vildštejnské Kaolinové a Hlinné Závody.

1950-1967

Back above the ground

Some of the mining takes place in underground mines. The company reorganization results in its division into seven production locations – the Sadov, Božičany, Hlubany, Skalná, Provodín, Střeleč and Sedlec mines. The company changes its name to Keramické a Sklářské Suroviny, Sedlec u Karlových Varů.

1972 / Modernization

Kaolin production is modernized, and new products introduced to the market – plasters and paints.

1890
1900
1910
1920
1930
1940
1950
1960
1970
1980

1990-1993

Privatization

Due to political changes in Czechoslovakia, the corporation was divided into separate independent (subsidiary) companies. In 1993, the company was privatized and renamed to Keramické suroviny, Božičany, spol. s r. o.

1995

Restoration of Tradition

The company transformed into a joint-stock company and, as the direct successor of the original company, returned to its historical name Sedlecký kaolin, a. s. High-intensity superconducting magnetic separation was newly implemented in kaolin production.

1997-1999

New Plants

Sedlecký kaolin, a. s. acquired the Brno company Prototypa, a. s., focused on weapon development and the sale of Sedlecký kaolin products. It also newly manages the Únavov factory, PKZ – Užitková keramika a. s., Poštorná, specialized in the production of construction, chemical, garden, and sewage ceramics, and the plant in Třemošná.

2003-2005

New Products

In the Sadov plant, the production of fired kaolins is initiated. The new operation in Božičany enters the market with cat litter, and the Poštorná plant begins the production of sanitary ceramics.

2006-2007

New Plants

Sedlecký kaolin purchased the Loket factory and acquired a new zeolite deposit.

2008

Modernization

The introduction of modern ultrafine grinding technology at Sedlecký kaolin.

2009

End of Mining - Důl Podlesí

Removal of damage caused by mining deposits and reclamation of the area.

2012-2013

Modernization

Sedlecký kaolin a. s. introduces innovations in calcined products and additives and a new method of fluid drying of kaolin. It also innovates products for porcelain production and functional fillers for the automotive industry and introduces a magnetic separator.

2013

End of Mining - Lom Hájek

Reclamation and remediation of the area after raw material extraction.

2014

Energy Savings

In 2014, Sedlecký kaolin a.s. became the winner of the Business Project of the Year in the Eco-Energy/Energy Savings category thanks to the construction of a cogeneration unit as part of the kaolin drying process.

2014-2015

New Plant Velký Luh

Opening of a modern plant with unique dry processing of raw materials. Completion of projects 'Innovation of Calcined Products and Additives.'

2016

Collaboration - THUN

Since 2016, we have participated in the Porcelain Stop THUN exhibition.

2016-2018

Increased Whiteness of Kaolin and Energy Savings

Optimization of kaolin production for better whiteness and more efficient energy consumption.

2018

End of Mining – Lom Kaolina

Reclamation of the area after kaolin extraction.

2019

Production Modernization

Innovation of production and packaging lines for the production of bentonite sorbent.

2020

Strengthening Magnetic Separation

Purchase of a second magnetic separator, which allows for higher quality and flexibility in production.

2022

New Companies for Energy Production

Establishment of companies SK Energy s.r.o., SK FVE H s.r.o., SK FVE O s.r.o., SK FVE P1 s.r.o. focused on renewable energy sources.

2022

130 Years of Sedlecký Kaolin

A significant anniversary of the company and its historical legacy.

2023

Kitty Care s.r.o.

Establishment of a subsidiary focused on premium products for cats.

2023

ASEAN Vietnam Ceramics

Participation in a prestigious exhibition in Hanoi, Vietnam.

2023

New Companies for Property Management

New companies for property management.

2023

Alpine Mill

Investment in the modernization of milling technology.

2024

100 Years of World Standard Kaolin

Expansion of production capacities for fillers in technical applications (plastics, seals, tires).

2024

UNICERA Turkey and ASEAN Vietnam Exhibitions

Presentation of products at international trade fairs.

2024

Renovation and Insulation of the Hostel Building

Improvement of energy efficiency and comfort.

2024

X-ray Diffraction and Furnaces in Loket

Improvement of energy efficiency and comfort.

1990
2000
2010
2015
2020
2023
2024
2025
2026

Nature conservation

We care about mining in harmony with the environment protection. Therefore, we constantly invest in modern research and development of new technologies. They help us to work ecologically and to protect nature. We recultivate the excavated areas and return them to the landscape.

219
Hectares of land
returned to nature
198
Hectares of land
returned to nature

Surroundings of the Karlovy Vary region