Everything from a single source

A large portion of the raw materials for GK Graphite's graphite products come from our own mining operations. Thanks to secured raw material sources in Asia and Europe, we guarantee our customers maximum supply security and consistently high product quality. We mine graphite underground at our company headquarters in Kropfmühl and in Sri Lanka.

To concentrate graphite, the raw ore is wet-processed and floated. During this process, the graphite is separated from its accompanying minerals using wet mechanical methods to increase the carbon content to up to 96 percent. After the wet-mechanically processed graphite is dewatered, dried, and sieved, and separated into different fractions, the refined raw material is ground to various grain sizes – some of the graphite even to finenesses of less than 2 micrometers. Different grinding processes influence the particle morphology, optimize the particle size, and give the graphite the desired shape.

For high-purity grades, further processing steps are necessary after flotation. In the chemical purification process, the carbon content of the graphite is increased once again, achieving a purity level of more than 99 percent. With chemical-thermal purification, purity levels of up to 99.99 percent are even possible.

Industrial processes demand complete transparency and a high degree of customization. GK Graphite provides everything from a single source, mastering and controlling all process steps and building on many years of experience and expertise in the international graphite business. Our services unlock new value creation potential along the entire production and supply chain, thereby increasing operational efficiency, product quality, and profitability. GK Graphite offers its customers and partners a unique and comprehensive range of identification and localization systems for all products and processes. Among other things, our Chinese subsidiary QKG strengthens the raw material network in Asia, ensures the selection and testing of suitable graphites, and adheres to German quality standards.

Through extensive research and development, GK Graphite ensures the continuous optimization of its product portfolio. Based on highly efficient and quality-conscious processes, we develop high-quality specialty solutions and custom products in close collaboration with our customers and partners. Our ongoing, intensive engagement with new processing technologies and the development of specialized graphite products for modern applications distinguish GK Graphite as a technologically advanced company. By regularly and long-termly cooperating with universities and research institutions, we transfer comprehensive expertise and play a leading role in pioneering projects.

Based on its extensive standard product range, GK Graphite can respond to every requirement in a customer-oriented and flexible manner. This is our core competence. To offer our customers and partners the best solutions, a precise understanding of their processes, areas of application, and end uses is essential – which requires a high degree of mutual trust. With our diverse product portfolio and decades of experience in a wide variety of industries and applications, we can provide our customers with excellent technical advice. GK Graphite helps to improve and optimize processes – and thereby equip its customers' markets with high-end products.

As ultra-thin 2D crystals consisting of just a single layer of carbon atoms, graphene, thanks to its exceptional electrical conductivity, has the potential to revolutionize microelectronics and computer technology. When screens and mobile phones can soon be folded like a newspaper, when cars drive themselves, airplanes weigh only a few kilograms, and humans jet off to Mars, graphene will be at the forefront – and GK Graphite's product range will be at the forefront. Graphene is just one of numerous innovations in whose development we are actively involved. Open to every new development, we are the perfect raw material partner for the future for all industries. We work together with our customers on groundbreaking innovations and help patent their ideas.