By William Petruk
Innovations of appearing utilized mineralogy investigations, and functions and features of lately built tools for measuring mineral homes are explored during this publication meant for practising utilized mineralogists, scholars in mineralogy and metallurgy, and mineral processing engineers. the advantages of utilized mineralogy are awarded through the use of in-depth utilized mineralogy stories on base steel ores, gold ores, porphyry copper ores, iron ores and business minerals as examples. The bankruptcy on base steel ores features a dialogue at the results of liberation, particle sizes and surfaces coatings of Pb, Cu, Fe, Ca and So
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Extra resources for Applied mineralogy in the mining industry
Proportion of mineral in contact with other minerals The proportion of mineral that is in contact with another mineral is determined by measuring the interface lengths between the minerals, and calculating the relative percentages of the interface lengths. This measurement is generally made on uncrushed material to determine mmeral associations in an ore, but it can also be made on mill products. 7. Surface coatings on particles Techniques have recently been developed to measure the presence and quantities of surface coatings on mineral grains, and mvestigations have been conducted to help mineral dressmg engineers design more efficient flowsheets.
Szymanski and Petruk (1994) used a Fein-Marquart search-match package to automatically obtain a semi-quantitative estimate of the minerals identified, and used the I/I^ ratios for all the minerals in the sample to convert the semi-quantitative estimates into quantitative results, with a high degree of accuracy. It is considered noteworthy that Hansen (1979) has routinely used the randomiser punch for many years to perform quantitative mineralogical analyses by XRD. 4. SCANNING ELECTRON MICROSCOPE (SEM) WITH ENERGY DISPERSIVE X-RAY ANALYSER (EDS) The scanning electron microscope (SEM), interfaced with an energy dispersive X-ray analyser (EDS), is a microbeam instrument that is used in applied mineralogy to analyse polished and/or thin sections, as well as unmounted pieces of material.
Furthermore, when using polished surfaces, the image is free of the effects of topography, fine scratches generally do not appear in the image, and holes in polished sections are readily detected. On the other hand, relativity high voltage (>~15 kV) and current (>~15 nA) are required to produce good BSE unages. An optimized BSE hnage is sensitive enough to display very small changes in average atomic number of the mineral, and this property is useful to show the distributions of trace elements in a mineral.