Ore_Handling_in_Mineral_Processing_Presentation.pptx

Ore_Handling_in_Mineral_Processing_Presentation.pptx

1. Ore Handling in Mineral Processing Focus on Ore Storage, Feeding, and Self-Heating of Sulfide Minerals

2. Introduction to Ore Handling Ore handling is a critical function in mining and mineral processing, accounting for 30-60% of the total delivered price of raw materials. It involves transportation, storage, feeding, and washing of the ore as it moves through various stages of treatment in the mill.

3. Ore Storage Ore storage is necessary to balance different operation rates across mining and milling. It ensures continuous operation, reduces spillage, and allows blending of different ore grades. However, too much storage can lead to issues such as ore oxidation and self-heating.

4. Removal of Harmful Materials Run-of-mine ore often contains harmful materials like large metal pieces, wood, and clays. These can damage equipment, hinder processes, and consume reagents. Methods like electromagnets, metal detectors, and screens are used to remove these contaminants early in the process.

5. Ore Feeding Feeding is essential to deliver a uniform stream of ore to downstream processes. Various types of feeders, such as apron, belt, and vibrating feeders, are used to ensure consistent and controlled ore flow. Proper feeder design reduces wear, segregation, and dust.

6. Self-Heating of Sulfide Minerals Self-heating occurs when the rate of heat generation from oxidation exceeds heat dissipation. It poses significant risks during storage and transport, leading to toxic gas emissions and environmental hazards. Mitigation strategies include moisture control, infrared monitoring, and chemical inhibitors.

7. Mitigation Strategies for Self-Heating Effective mitigation strategies for self-heating include: - Controlling moisture content below 1%. - Blending hot material with cooler material. - Sealing ore in plastic to eliminate oxygen. - Using infrared detectors to monitor hot spots. - Employing CO2 blanketing during transport.

8. Conclusion Ore handling, including storage, feeding, and addressing self-heating, is vital to efficient and safe mineral processing operations. Understanding and implementing the proper techniques ensures operational continuity, minimizes risks, and optimizes the overall process.