The HPGR (High Pressure Grinding Rolls) device is recognized as an innovative technology in the mineral comminution process. It consists of two heavy rollers that crush materials between them by applying high pressure. The development history of HPGR dates back to the 1980s when Professor Klaus Schunert from Freiberg University in Germany first introduced this technology.
Innovation and Initial Development
Professor Schunert was striving to reduce energy costs in comminution processes. He realized that using high pressures could crush materials more effectively. This idea led to the construction of the first HPGR device, which was initially used in the cement industry. At that time, the main goal was to reduce energy consumption and increase efficiency in cement production.

Expansion of HPGR Usage
In the 1990s, the use of HPGR expanded into the mining industry. This industry required comminution of minerals with large and hard particle sizes. HPGRs, with their ability to crush materials under very high pressures, were recognized as a suitable option for this task. They were widely used especially in the extraction processes of iron ore and copper.
Recent Advances
In recent years, many advancements have been made in the design and performance of HPGRs. The use of advanced materials in roller construction, improvements in pressure control systems, and increased grinding capacity are among these developments. Additionally, efforts have been made to reduce energy consumption and enhance efficiency. For example, the use of advanced systems to control roller pressure and temperature has helped reduce wear and extend the machine’s lifespan.
Advantages of HPGR Development
The development of HPGR has not only helped reduce operational costs and energy consumption but has also played an important role in improving the mineral liberation process. By crushing materials more effectively, mineral liberation is increased, resulting in improved extraction process efficiency.

Future of HPGR
With regard to the multiple advantages of HPGR, it is expected that this device will continue to play an important role in the mining and cement industries in the future. Current research is focused on further improving efficiency and reducing energy consumption. Additionally, efforts are underway to develop new models with higher capacities and greater performance.
Overall, the development history of HPGR reflects continuous efforts to improve comminution processes and reduce operational costs. As an innovative technology, this device has gained a significant position in various industries and will continue to contribute to the development of these sectors in the future.