By W.H. Gibson –Material flow analysis is commonly required in mining methods were the rock has to move from its initial position to the extraction point, commonly known as gravity flow. This happens in mining methods such as sublevel caving, panel caving, block caving. During this process the ore is diluted with waste from the walls of the cave column or waste sitting on top of the ore. It is essential for the mining design to assess the degree of dilution for different draw strategies to minimise the waste extraction and optimise the ore recovery. Stochastic methods have proved to be a good alternative for this type of assessment and might also be interesting for for the description of the movement of materials in (big) silos. Continue reading Stochastic Models for Gravity Flow: Numerical Considerations
Ajax ‘Lynflow’® IBCs – The bin with Superior Flow characteristics
Ajax recently introduced a new range of IBCs based on the latest hopper design technology that have greatly improved flow prospects over conventional bins. In most cases these allow difficult flow materials to be reliably discharged without the use of dedicated discharge stations or specially designed fittings on each bin. Not only does this offer a significant saving in cost and operational flexibility, but freedom from fixed discharge stations result in cleaner site arrangements. These Bins are designed to secure an optimised balance between enhancing the flow characteristics for reliable discharge of difficult flow materials, whilst securing the maximum storage capacity within limited headroom. They exploit fundamental features of the latest bin design technology to overcome arching, ratholing and feeding problems with products that have difficult flow characteristics.