Thickeners can present operators with many challenges including those related to process conditions such as changing ore characteristics and increased throughput requirements. Additionally, equipment availability and reliability is paramount so that the thickener role in the plant process does not hinder overall performance. It is therefore vital to take a comprehensive services approach with capable personnel for optimal plant operation with accessible operational support.
Recommendations to maintain and ensure thickener availability and performance
Observations on thickener operations
Spare part consolidation and rationalisation
Opportunities for improvement
An important aspect of the service is the on-the-job training and knowledge transfer which can occur during each of the on-site interactions which will occur during the contract period. This helps to develop competency on site for continuing thickener operations.
Efficient concentration depends on proper selection of draw-off ports and the splitter openings used. Heavy minerals such as ilmenite or hematite settle out rapidly in a spiral concentrator and they should be removed as soon as a good wide band forms. Since the concentrate band is wider at the top, splitters near the top of the spiral concentrator should be opened wider than those near the bottom. This means that the splitters collect concentrate at a relatively uniform grade rather than uniform rate.
The product discharge boxes are provided with two heavy-duty splitters for separating into three products, i.e. concentrate, tails and middling. Product boxes are manufactured of solid-cast polyurethane and are designed to collect product from each spiral start.
How We Do It Meet And Define Gogal