The beneficiation of low-grade manganese ore is investigated using applied magnetics separation, multi-gravity separator, shaking table, flotation methods, and sulfuric acid leaching. The manganese content in the ore sampled from the Unagad deposit is 17.31%. The best option and high result among beneficiation experiments is the use of a multi-gravity separator. Manganese leaching from the concentrate is investigated using H 2 SO 4 and H 2 O 2 as leaching and reducing agents. A study on the characterization of the main parameters such as agitation, reaction temperature, leaching time, H 2 SO 4 concentration, H 2 O 2 concentration, and liquid/solid mass ratio for increasing leaching of the manganese from the beneficiated samples was performed. The optimal leaching efficiency was 86.79% for manganese.

The gas-based direct reduction of iron concentrate pellets was carried out by using the typical carbon monoxide. The investigation on the influences of time and temperature of the reduction were studied. The results showed that the temperature and time of the reduction were directly related to the reduced iron content. In order to perform the iron reduction experiment, the powder iron concentrate needed to be pelletized, and the binder agents have used molasses and bentonite. As the result of the reducing experiment at the 1050°C temperature and for 120 minutes, the reduced iron content was 85.6%, and hardness was 115.5 HV which meets the requirements of the reduced iron standard.