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- W2773485443 abstract "The unstoppable increasing global demand for metals calls for an urgent development of moreefficient extraction and processing methods in the mining industry. Comminution is responsiblefor nearly half of the energy consumption of the entire mining process, and in the majority of thecases it is far from being optimised. Inside comminution, grinding is widely known for being moreinefficient than crushing, however, it is needed to reach liberation at an ultrafine particle size.Sometimes the material is excessively reduced in size, while liberation could be achieved at acoarser scale.Therefore, in this work a deep characterisation of a specific tungsten ore is performed in order tofind guidance in optimising the processing. Either by discarding and avoiding the unnecessarycrushing of uneconomic material or any other useful recommendation. The aim is that themethodology utilised for the characterisation of the material, can be applicable to other ores, withthe purpose of initiating the optimisation of the mineral processing.This thesis is divided in two main parts: the mechanical characterisation of the breakage and themineralogical characterisation. For the first part, the breakage behaviour of the sample materialwill be studied and described in terms of particle size distribution after interparticle breakage. Thelatter will be assessed in terms of the different minerals and tungsten concentrations and mineralassociations, through the use of image analyses (scanning electron microscope), X-Ray diffractionof crystalline dust and chemical analyses.The liberation and fracture characteristics that occur due to compressive crushing will beanalysed. Furthermore, recommendations in the processing of the ore will be detailed, along withpotential problems that should be avoided during its exploitation or the own processing.Results show that it is possible to obtain ore liberation during coarse comminution. Moreover,preconcentration of the tungsten ore at coarse scale and early rejection of gangue has beendetermined to be achievable due to the tendency of the ore to concentrate in specific sizefractions." @default.
- W2773485443 created "2017-12-22" @default.
- W2773485443 creator A5055375322 @default.
- W2773485443 date "2017-07-01" @default.
- W2773485443 modified "2023-09-23" @default.
- W2773485443 title "Optimisation of tungsten ore processing through a deep mineralogical characterisation and the study of the crushing process" @default.
- W2773485443 hasPublicationYear "2017" @default.
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