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
By M. Rackl, Yuan Tan, W.A. Günthner –Part of the international struggle to reduce the carbon footprint in energy consumption is the utilisation of biomass instead of fossil fuels such as coal or oil. Although the basic approach is quite promising, as there is a huge amount of usable biomass, there are some problems to be solved with regard to its application due to the largely differing form of appearance of the various base materials. In the following, some research into storage and handling of different wood products including DEM measures are presented. Continue reading Feeding of Biomass: Design Experience with Wood Chips
Edinburgh, United Kingdom – Crushing is a common step in mineral processing and an optimized design and crusher operation is key to maximizing productivity. This video shows the analysis of the jaw crushing process for different materials (iron ore, limestone and granulite) using EDEM simulation software. Continue reading EDEM: Simulation and Analysis of Jaw Crusher Process
By A. Edilbert , R. Spaargaren, C. Geijs, J. Ruijgrok, G. Lodewijks, D. Schott – This paper aims to redesign a transfer chute as used in a Eurosilo system specifically for handling coal. The velocity of material vertically entering the chute was estimated at 15 to 34 m/s depending on the fill height of the silo. A three-stage approach was taken. First the existing situation with the highest velocity was modelled with DEM (Discrete Element Simulations), and the results of the wear profile on the existing chute were compared with practice. Secondly, three configurations were designed and the performance of these configurations in terms of wear volume were tested by simulation. Thirdly, and lastly, the performance of the configuration in terms of ensuring material flow through the chutes for a cohesive coal was evaluated. Based on the results of the simulation, two chute designs showed an improved performance where less wear was observed while securing flow through the chute. Continue reading Design of a High Speed Transfer Chute in a confined Space – A DEM Case Study
Edinburgh, United Kingdom – EDEM, one of the leading companies in Discrete Element Method (DEM) technology for bulk and granular materials simulation, has released a new version of EDEM BulkSim software – a specialized tool for designing and optimizing transfer points and chutes in the mining industry. Continue reading EDEM: new Version of EDEM BulkSim Software for simulation-based Design of Transfer Chutes
Edinburgh, United Kingdom – EDEM®, a market leader in Discrete Element Method (DEM) technology for bulk and granular materials simulation, has published a key report providing a comprehensive review of the latest research and advances in the field of powder calibration alongside guidelines for realistic simulations of powder behavior using DEM. Continue reading EDEM: Powder Calibration Report with Guidelines for DEM Simulation of Powder Handling Processes
Edinburgh, United Kingdom – This simulation models over 8 million particles of less than 0.3mm in size. Large amounts of tiny particles are common in Additive Manufacturing applications. This video shows powder raking and how EDEM tools can be used to analyze voidage, particle orientation and number of contacts at different time steps. Similar simulations can guide the design and optimization of the powder rake and its speed.
Edinburgh, United Kingdom – EDEM, a market leader in Discrete Element Method (DEM) technology for bulk material simulation, announced the availability of its specialized tool ‘EDEM for ANSYS’ from the ANSYS App Store, enabling a wider number of engineers to use and benefit from the integration between the two technologies.
Edinburgh, United Kingdom – Discrete Element Method (DEM) specialist EDEM and The Barnes Group Advisors, specialists in advising on and solving problems associated with industrial additive manufacturing, announced a collaboration agreement to advance the use of simulation to aid design decisions for equipment and processes in the additive manufacturing industry.