Description
HPF The Mineral Engineers – an Innovative Division of the Quarzwerke Group
The Quarzwerke Group is an internationally active family-owned company with over 140 years of tradition and a significant market position in the extraction, processing, and refinement of industrial minerals, primarily from its own deposits. The products are indispensable not only in their original application areas such as glass, paper, foundry, ceramics, and construction chemicals, but have also long been used in polymer-based applications such as plastics, paints, and coatings.
The group employs around 3,500 people across 35 locations in Europe and Asia and is organized into six divisions. The division HPF The Mineral Engineers focuses on the development of innovative and functional high-performance fillers and additives based on mineralogical and synthetic raw materials. High-performance fillers are highly specialized natural raw materials valued by customers worldwide.
In close collaboration with customers, tailored solutions are developed to help improve the efficiency of their systems. To achieve these goals, the company employs highly qualified specialists in research and development, the central laboratory, and the technically oriented sales department.
The High Performance Fillers plants (HPF) located in Frechen near Cologne and in Dangjin City, South Korea, rely on experienced teams who adapt flexibly and quickly to new challenges and products. These sites are equipped with processing units of various sizes for the treatment and refinement of mineral raw materials. This enables the grinding and surface modification of minerals from millimeter scale down to just a few hundred nanometers.
Quarzwerke is a corporate group with a strong quality philosophy, certified according to DIN ISO 9001, ensuring smooth operations from extraction to delivery.
The Quarzwerke Group is an internationally active family-owned company with over 140 years of tradition and a significant market position in the extraction, processing, and refinement of industrial minerals, primarily from its own deposits. The products are indispensable not only in their original application areas such as glass, paper, foundry, ceramics, and construction chemicals, but have also long been used in polymer-based applications such as plastics, paints, and coatings.
The group employs around 3,500 people across 35 locations in Europe and Asia and is organized into six divisions. The division HPF The Mineral Engineers focuses on the development of innovative and functional high-performance fillers and additives based on mineralogical and synthetic raw materials. High-performance fillers are highly specialized natural raw materials valued by customers worldwide.
In close collaboration with customers, tailored solutions are developed to help improve the efficiency of their systems. To achieve these goals, the company employs highly qualified specialists in research and development, the central laboratory, and the technically oriented sales department.
The High Performance Fillers plants (HPF) located in Frechen near Cologne and in Dangjin City, South Korea, rely on experienced teams who adapt flexibly and quickly to new challenges and products. These sites are equipped with processing units of various sizes for the treatment and refinement of mineral raw materials. This enables the grinding and surface modification of minerals from millimeter scale down to just a few hundred nanometers.
Quarzwerke is a corporate group with a strong quality philosophy, certified according to DIN ISO 9001, ensuring smooth operations from extraction to delivery.
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Products
Feldspar
Feldspar
With almost 60 % by weight of the available rocks in the earth's crust, feldspars represent by far the dominant group of minerals. They are chemically resistant tectosilicates with a robust grain morphology. Feldspar belongs to the group of alkali and alkali earth metal silicates and is an essential raw material for numerous economic sectors. Its hardness and resistance make it an indispensable component in the production of ceramics, glass and as a filler in the plastics industry. Nepheline syenite is an igneous rock with a unique chemical composition.
Density: 2.6 g/cm³
Hardness: 6 (Mohs)
High chemical resistance
High degree of whiteness
Low refractive index of 1.53–1.55
Behaves transparently in many binder systems
Thick‑tabular crystal structure
Hardness: 6 (Mohs)
High chemical resistance
High degree of whiteness
Low refractive index of 1.53–1.55
Behaves transparently in many binder systems
Thick‑tabular crystal structure
Mica
Mica
Mica is a group of silicate minerals characterized by their distinctive layered structure. These layers are composed of thin, flat sheets that can be easily split and can vary in color, degree of transparency, and chemical composition. The most common types of mica include muscovite, biotite, and phlogopite, though it should be noted that muscovite is known for its transparent properties, while biotite and phlogopite are often darker and opaque.
Density: 2.85 g/cm³
Hardness: 2.5 (Mohs scale)
High resistance to high temperatures
Low oil absorption
High aspect ratio (1:30)
Lamellar-shaped particles
pH value: 9.5
Thermal expansion coefficient of muscovite: 7*10-6/K
Thermal expansion coefficient of phlogopite: 27*10-6/K
Hardness: 2.5 (Mohs scale)
High resistance to high temperatures
Low oil absorption
High aspect ratio (1:30)
Lamellar-shaped particles
pH value: 9.5
Thermal expansion coefficient of muscovite: 7*10-6/K
Thermal expansion coefficient of phlogopite: 27*10-6/K
SILATHERM®
SILATHERM®
The demand for new and innovative plastic materials and fillers continues to grow. With SILATHERM®, the Quarzwerke HPF The Mineral Engineers division offers new filler concepts that significantly improve the thermal conductivity of plastics and adhesives. The use of thermally conductive plastics offers several advantages.
In addition to the benefits of lightweight construction, the use of plastic allows for the quick and economical production of complex geometries through injection molding. In the automotive sector, for example, the number of E&E applications in terms of automation and connectivity is constantly increasing.
In many of these applications, heat generation and its effective dissipation pose a major challenge. An intelligent choice and combination of plastics and fillers can provide a technical and economical alternative to the use of metallic materials.
Silanization
Silanization
Surface treatment is an innovative surface modification process for mineral fillers used in numerous industries. This process improves the adhesion between fillers and polymers, ensuring greater mechanical strength, durability, and workability of the final products.
The targeted use of silanes creates a lasting chemical bond that offers significant advantages, such as increased longevity and optimized material properties.
Surface treatment of mineral fillers is an indispensable technology for enhancing final products in various sectors such as construction, plastic processing, electronics, paints and coatings, and even medicine. The surface treatment meets the high requirements of modern materials and significantly contributes to sustainable high-performance polymer solutions.
Wollastonite
Wollastonite
In summary: Wollastonite, the natural calcium silicate mineral
Wollastonite is a mineral from the silicate group. It was named in honor of the English chemist and mineralogist William Hyde Wollaston. Wollastonite is refined for use as a filler in various industrial sectors, such as the production of ceramics, building materials, glass, paints, plastics, and metals. Wollastonite can be found in various parts of the world, including China, Mexico, India, Spain and the USA.
We offer two main product lines:
The "Low Aspect Ratio" (LAR) product line, represented by TREMIN® 283, is characterized by blocky particle shapes with a low length-to-diameter ratio of 3:1.
On the other hand, the "High Aspect Ratio" (HAR) product line, represented by TREMIN® 939, features highly needle-shaped wollastonite particles with a high length-to-diameter ratio of 8:1.
Wollastonite has a Mohs hardness of 4.5 and a density of 2.85 g/cm³.
Thanks to its low coefficient of thermal expansion of 7*10-6/K in the temperature range from 20 to 300 °C, it is suitable for applications with variable temperature conditions.
Wollastonite shows excellent reinforcing properties, making it a valuable material in various industrial sectors.
Additionally, it is chemically inert, meaning it is resistant to many chemicals.
Thanks to its low coefficient of thermal expansion of 7*10-6/K in the temperature range from 20 to 300 °C, it is suitable for applications with variable temperature conditions.
Wollastonite shows excellent reinforcing properties, making it a valuable material in various industrial sectors.
Additionally, it is chemically inert, meaning it is resistant to many chemicals.