Europe is heavily dependent on imports the raw materials (RM) and needs to increase a domestic supply to ensure the global competitiveness of its manufacturing industries and accelerate the transition to a resource-efficient, sustainable society. Demand for resources will increase due to the global population growth, industrialization, digitalization, growing demand from developing countries and transition to the climate neutrality with metals, minerals and biotic materials, used in the CO2 lowemission technologies and products. The RMs are essential for the EU industry and are at the core of every value chain. Among them, the critical raw materials (CRM) are often produced and used in relatively small quantities, but have the unique characteristics that make them essential ingredients for products in the strategic areas such as the renewable energy, digital, aerospace and defense technologies. To strengthen the EU's open strategic autonomy, the Critical Raw Materials Act will soon be published in 2024 to ensure an access to the secure, resilient and sustainable CRM supply, fostering efficiency and circularity throughout the value chain. Several decades of absence of the Mineral Raw Materials (MRM) policy in the EU and most EU member states has led to a significant lack of knowledge about the MRM. Technological solutions of a sustainable green energy play a key role especially for application the newly discovered materials. Potential additional sources of the CRM certainly represent the SEDEX type of ore materials. The EU updates the CRM list every year according to the market needs, and the SEDEX ore type contains metals that have been on that list for years. The SEDEX type of polymetallic ore presents a new challenge considering that it contains components that are more valuable. They contain valuable critical metals (Cu, Zn, Pb, Au and Ag). Within this project title Integrated Innovative Metallurgical System to Benefit Efficiently Polymetallic, Complex and Low-Grade Ore and Concentrates under the acronym the "IntMet", the new technologies were developed for obtaining all valuable metals from this very complex mineral resource that cannot be treated in an economically and environmentally acceptable way with the conventional technologies (flotation, pyrometallurgy, etc.).