Abstract:
With the aim of mitigate the deposition of manganese ores in tailing dams, an investigation regarding the performance of briquettes made of such materials was done. The main goal of the work is to evaluate the behavior briquettes, made of low particle size manganese ore, which is deposited as tailing in dams, in similar conditions of the prereduction zone. With the aim of mitigate the deposition of manganese ores in tailing dams, an investigation regarding the performance of briquettes made of such materials was done. Thus, briquettes made with the material from Urucum’s tailing dam material (Corumbá, Brazil) and molasses, as binder, were produced and tested in a retort furnace with controlled heating rate (10 °C/min) and atmosphere (70 %CO/30 %CO2). Porosity and strength towards the heating tests were also performed. The briquettes showed better performance than the lumpy material. Therefore, the briquettes started and finished reduction at lower temperatures. As result, such agglomerates are a potential raw material regarding its lower energy and carbon consumption. In submerged arc furnaces. Furthermore, the different top sizes used in the raw materials did not negatively affected the briquette’s performance. Lastly, the usage of briquettes made of Urucum’s tailing dam material proved to be beneficial, when considered the variables tested in the work.