Setorização de uma reserva mineral de ferro visando a produção de granulado para redução direta e alto-forno

Abstract

Mine planning is imperative for ore quality control and critical to the financial success of a mining company. In this sense, this paper sectorises an iron ore reserve with the purpose of discovering if it has the capacity to generate a new product of iron ore. Being this one, of greater economic value, because it has superior quality to the product currently supplied by the mines in operation and, consequently, can provide greater financial return for the company. For this, prior quality control is necessary based on product specifications in the direct reduction and blast furnace process. The study is based the geological blocks model, topographical data for making the “wireframe” and armhole solids. Sectorization methods are used by analysis of the total solids, restricted cavity and two cavas in operation. in addition to the investigation of a plan of tilling already made for three years later - with application of cut off in the cubations and simplification of the worksheets with display of the mass and the average contents of the elements. For more complete evaluation it is necessary to create graphs, maps of isoteores and representative geological sections with filters specific to each chemical element. The mineral reserve and the 3A tillage plan have the potential to boost the production of blast furnace granules with higher quality than required in the product specification on the market.