Impacto das melhorias no circuito da britagem na Largo Vanádio de Maracás

Abstract

Due to the increasing demands for efficient ore processing with reduced operational impact, this paper presents the actions implemented by Largo Vanádio de Maracás (LVMSA) to enhance the productivity of its crushing operation. The first interventions were carried out consist of the installation of a banana-type vibrating screen and a Sandvik CH440 cone crusher with an automatic setting regulation system, as well as the implementation of a dry magnetic separation circuit. These changes significantly improved the crushing circuit's performance, enabling more efficient separation of ores with varying magnetite content and contributing to a 39.8% increase in crushed ore feed in 2024. Additionally, adjustments in the explosive charge ratio during rock blasting improved fragmentation and reduced primary crusher blockages. The use of automatic setting regulation systems in the cone crusher also optimized operational control. These collective actions resulted in a 19.6% growth in total production, despite the introduction of dry tailings through the magnetic separation circuit. The study emphasizes the importance of technological innovation and process optimization to achieve greater operational efficiency in mining.