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The mineral biotechnologies, a domain of the primary raw material processing, are increasingly diversifying into some metallurgical areas. The presented results of research carried out with metallurgical wastes from aluminium production, lead waste remaking of use of bio-chemical methods. The results obtained and the proposed technologies applying bio-chemical processes enable a complex processing and an use of the waste sludge from the aluminium production and the matte-based copper production for the production of hematite pigments.