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Raw material optimization for charcoal blast furnaces

Client:Gerdau Longos
Sector:Mining and Quarrying
Optimization type:Process, Resource Allocation

Client

A branch of Gerdau, Gerdau Longos presents a differentiation, in that they are not moved by coke but by charcoal. It has three plants in Minas Gerais, in Barão de Cocais, Divinópolis and Sete Lagoas.

Context

The three units are responsible for allocating the ores found in the region, both themselves and third parties. Until then, the distribution aimed at a certain uniformity in order not to penalize a certain unit. However, Gerdau saw in this issue a potential gain in optimizing the allocation of ores to each plant.

Solution

The physical properties of the ores were analyzed and compared to the performance and energy consumption data of each blast furnace. With this new basis, we created a mathematical model that optimizes the purchase of ores and their allocation to each plant aiming at a minimum global cost.

Results

Through better metallic yields and lower fuel consumption, we observed a significant reduction in production costs. In addition, there was greater integration between the units and the consequent formalization of knowledge by process specialists. The model improved the quality and speed of execution of monthly plans.
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