CHE4162 Lecture Notes - Lecture 1: Comminution, Particle Technology, Mineral Processing
7 Aug 2019
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Document Summary
Iron ore, sinter, pelle: pharmaceutical industry. Develop and produce pharmaceutical drugs: mineral processing. Process of separating valuable minerals from their ore: comminution (size reduction) sizing (by screening) concentration dewatering (solid-liquid separation) Comminution (size reduction: create particles of a certain size and shape for chemical reaction or release of valuable minerals, energy intensive & highly ine cient process. <1% e cient based on the energy required. Small particles (microns) larger particles by granulation/tableting/spray drying/extrusion. Reducing dust hazard and caking and lumping formation, improves ow properties/increase density/storage. Create particles of certain size and shape for chemical reaction or releases valuable minerals. Not liquids- but can be made to ow. Not gases- but can be compressed: bulk properties of powders are a ected by: size, size distribution, shape, density, surface area, surface texture, interparticle forces, particle strength, Forces acting on particles: particle motion is determined by:
