Gruvberget, a non-operational open pit mine in Northern Sweden, is one of LKAB’s iron oredeposits. During the mine’s operational years, only the magnetite ore was processed while thehematite ore was set aside due to its phosphorous content, which makes it unsuitable for iron andsteelmaking. A project to re-open the mine is underway, with ongoing discussions about theprocessing methods and potential products that can be developed from the hematite ore. This thesisinvestigates the potential of processing the hematite ore from the Gruvberget deposit to producehigh-density aggregates suitable for use in high-density concrete and ballast applications.Emphasis was made on evaluating the chemical and physical properties of the hematite aggregates.The final product specifications required a particle density above 4.6kg/dm3 and a particle sizedistribution fitting within the stated minimum and maximum bounds. Additionally, the chlorides,acid-soluble sulfates, sulfur, and fines (below 63 microns) were limited for the product to preventunwanted reactions. The product needs to meet the criteria set by ASTM International and CENstandards to ensure its acceptability in diverse regulatory environments. Through a literaturereview, the study examined the use of hematite as aggregates and highlighted its opportunities andchallenges.Of the seven classified types of Gruvberget hematite, type 2 and type 6 were provided by LKABfor the experimental test work. The ore samples were first characterized using Micro-XRF andAMICS software. Half-drill cores were scanned, and mineral maps were generated. The mapsrevealed the mineral associations in the hematite ore including apatite, quartz, microcline, andcalcite. A flowsheet was proposed that uses a combination of gravity concentration equipment (jig,spiral and shaking table). The feed, a rich iron ore with a 60% Fe head grade and an average particledensity of 4.5kg/dm3 underwent beneficiation at laboratory scale to improve product quality byremoving low-density minerals.Crushing was performed in stages to control the product size. As with conventional aggregates,removing deleterious material is a crucial step in the processing of aggregates, as unwantedreactions can compromise the strength and durability of high-density concrete from the processing.A single-stage process resulted in a product with a 5kg/dm3 density and >65% Fe grade in all theunit processes used. A loss of material was recorded in the fines fractions. After processing, thechemical composition of the product still had SiO2, Al2O3, TiO2, CaO, K2O, MgO and P but insignificantly lower quantities than the feed. The product had an enriched amount of V2O5 andMnO. No sulfides, sulfates or chlorites were recorded in the product. The use of gravityconcentration makes the project low-cost and environmentally sustainable.