In the hydrometallurgical production of nickel, the present iron is dissolved depending on the method chosen and the leaching agent used. Removal of the dissolved iron prior to electrolysis is necessary as otherwise it acts as a disturbing element. Simultaneously to the precipitation as jarosite from the enriched leach solution an adsorption or a coprecipitation of value elements occur. The obtained jarosite must be deposited as a residual material due to its chemical composition. The contained valuable metals, especially nickel, lead to a reduction in the process efficiency. Industrial processing of the jarosite residue would be desirable to increase the yield and to make the overall process more environmentally friendly. This not only reduces the considerable quantities to be deposited but also valuable metals can be recovered. In course of this work, a summary of currently available processing methods is carried out. Particular attention is paid to the recovery of nickel and cobalt as well as to the alternative uses of jarosite as a building material or raw material for ferronickel production. Furthermore, the decomposition curve is determined by thermogravimetry and the starting material is characterized by X-ray diffractometry prior to the clinker tests. For the qualitative determination of the clinkered samples, a chemical analysis is used using a total digestion procedure with inductively coupled plasma emission spectroscopy (TD-ICP) and Instrumental Neutron Activation Analysis (INAA) by an external laboratory. Based on the chemical analysis the achieved extraction rates are calculated.