Ronaldo Mendes

Experience

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  Samarco

  Oct 2007 - Jul 2018

  • Liderança de equipes de engenharia e produção. Responsável pelas Usinas de Concentração, Gestão de Custos (CAPEX e OPEX), controle de qualidade do processo produtivo de curto e médio prazos, qualidade e volumes de produção dos concentradores.• Gestão de empresas terceirizadas de manutenção e conservação industrial.• Champion dos projetos Lean Six Sigma (DMAIC, DFSS e Kaizen) dos engenheiros de processo.• Gerenciamento da equipe de Condicionamento temporário das plantas industriais. Show less • Atuação no desenvolvimento de rotas e insumos para redução de custos e melhoria contínua de processos em plantas de beneficiamento de minério de ferro, gestão de ativos dos equipamentos de grande porte da planta de beneficiamento com foco em aumento do rendimento operacional. Utilização de metodologias tais com Lean Seis Sigma e Kaizens para a redução de custos operacionais e aumento de receita da empresa.• Participei ativamente junto à área de Suprimentos e Engenharia de Processos na busca de desenvolvimento de novos insumos fornecedores, fazendo análises de custos e buscando inovações no mercado.• Liderei uma equipe multidisciplinar de nível técnico e engenheiros no projeto de melhoria contínua Lean Seis Sigma premiado como 3º colocado entre os melhores projetos na Samarco Mineração (Set/13) com um projeto de mudança de rota de processo que resultou em eliminação de perdas de produto com ganho na ordem de R$ 2.000.000 anuais. Show less

  • Chefe de Departamento de Beneficiamento

    Jan 2014 - Jul 2018

  • Engenheiro de Processo

    Oct 2007 - Dec 2013
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  Norsk Hydro

  Jul 2018 - May 2019

  Operations Manager

  Reporting to the Senior Manager, leading a team of 80 employees and 30 contractors. Responsible for the Bauxite Beneficiation plants, ensuring budgeted production with zero accidents.- Operated two tailings dams and two water dams to support the production process with a fully staffed team, including maintenance of structures and technical measurements.- Managed investments aimed at enterprise sustainability, quality control of short- and medium-term production processes, and ensured adherence to the agreed production budget.- Oversaw fixed and variable costs related to production and quality.- Maintained continuous interface with safety, health, and environmental management as well as with the production planning, control (PPC), process, and geotechnical teams.- Led a management redesign by integrating corrective maintenance and shift operation teams under one management structure, improving response times for emergency activities and enhancing leader-employee proximity Show less

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  Vale

  May 2019 - Sept 2024

  Operations Manager

  Sites: Conceição and CauêLeading a team of 175 employees and 120 contractors, I am responsible for delivering the budgeted production with a zero-accident goal.Key Responsibilities:- Managed people and processes in the iron ore industry, tackling the challenge of operating complex plants with a mix of outdated and modern equipment.- Spearheaded the recruitment of the first women in leadership roles across three operational units, advancing diversity and inclusion.- Planned and directed the start-up and ramp-up of two tailings filtration plants (Conceição and Cauê), establishing KPIs, CAPEX and OPEX budgets.- Oversaw fixed and variable costs related to production and quality (R$ 289 million).- Led the revitalization of plant instrumentation and automation, integrating Industry 4.0 into mining.- Analyzed overall business performance, including budgets, assets, and risk management.- Developed conceptual projects aimed at reducing fixed costs and streamlining process routes.Key Achievements:- Led a project to upgrade industrial effluent management and revitalize a natural watercourse, improving water quality for the local community and ecosystem.- Prevented operational plant shutdowns for two years by operating legacy filtration assets to replace tailings dams.- Drove a cultural change program through restructuring, reducing headcount, and enhancing technical decision-making.- Established a business risk management model, reducing risks from 9 to 7 through targeted investments in trigger actions.- Sponsored a project to eliminate overflow events in the Cauê unit’s containment system, reducing losses by 74%.- Implemented logistics for selling production process waste to smaller players, repurposing 100% of the previously stockpiled waste as a by-product.- Conceived and sponsored Vale’s first Training Dojo for Plant Operation, enabling immersive training for all employees and contractors at the plant. Show less

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  Mineração Morro do Ipê S.A

  Jan 2025 - now

  Gerente de Operação