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Laterite Soil Engineering
Laterite --- Soil mechanics --- Mécanique des sols --- Laterite. --- Soil mechanics. --- PEDOLOGIE --- PEDOGENESE --- SEDIMENTOLOGIE --- PETROLOGIE ROCHES SEDIMENTAIRES --- ROCHES TERRIGENES --- ALTERATION ATMOSPHERIQUE
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This Special Issue of Minerals presents recent, select studies that highlight advances in the fields of hydro- and biohydrometallurgy. It aims to attract the interest of readers and especially of young scientists and students in this fascinating scientific discipline.
n/a --- counter-current leaching --- metal extraction --- slag --- low-grade saprolitic laterite --- agglomeration --- bioleaching --- white metal --- precipitation --- iodide --- seawater --- reducing agent --- chloride --- chalcopyrite --- pyrite–arsenopyrite galvanic pair --- frontier orbital methods --- acid media --- bottom ash --- phosphorus --- manganese nodules --- waste reuse --- galvanic effect --- gold diiodide --- municipal solid waste incineration --- jarosite --- column leaching --- secondary mining --- iodide-oxidizing bacteria --- leaching --- primary sulfide copper --- heap leaching --- electrochemical --- optimization of parameters --- chloride ion --- reductive mineral dissolution --- tailings --- curing --- acid leaching --- secondary products --- uranium --- ferric ion --- Acidithiobacillus --- limonitic laterites --- iron reduction --- fluorapatite --- nitrate --- gold --- phosphate mineral --- purification --- iodine --- nickel --- sodium sulfite --- pregnant leach solution --- copper sulfide --- sulphuric acid --- laterites --- REE --- pretreatment --- triiodide --- laterite --- pyrite-arsenopyrite galvanic pair
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This Special Issue, focusing on the value of mineralogical monitoring for the mining and minerals industry, should include detailed investigations and characterizations of minerals and ores of the following fields for ore and process control: Lithium ores—determination of lithium contents by XRD methods; Copper ores and their different mineralogy; Nickel lateritic ores; Iron ores and sinter; Bauxite and bauxite overburden; Heavy mineral sands. The value of quantitative mineralogical analysis, mainly by XRD methods, combined with other techniques for the evaluation of typical metal ores and other important minerals, will be shown and demonstrated for different minerals. The different steps of mineral processing and metal contents bound to different minerals will be included. Additionally, some processing steps, mineral enrichments, and optimization of mineral determinations using XRD will be demonstrated. Statistical methods for the treatment of a large set of XRD patterns of ores and mineral concentrates, as well as their value for the characterization of mineral concentrates and ores, will be demonstrated. Determinations of metal concentrations in minerals by different methods will be included, as well as the direct prediction of process parameters from raw XRD data.
barite --- mineralogy --- industrial application --- beneficiation --- specific gravity --- bauxite overburden --- Belterra Clay --- mineralogical quantification --- Rietveld analysis --- machine learning --- artificial intelligence --- mining --- mineralogical analysis --- bauxite --- available alumina --- reactive silica --- XRD --- PLSR --- lithium --- quantification --- clustering --- Rietveld --- cluster analysis --- spodumene --- petalite --- lepidolite --- triphylite --- zinnwaldite --- amblygonite --- chalcopyrite --- ore blending --- copper flotation --- nickel laterite --- ore sorting --- framboidal pyrite --- sulfide minerals --- flotation --- process mineralogy --- heavy minerals --- ilmenite --- titania slag --- rietveld --- Magneli phases --- n/a
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There are several major megatrends having an impact on pyrometallurgical metal processing. The steadily growing demand for all metals is strengthened by the emergence of electrical vehicles (EV), which brings a high need for battery metals, but additionally, a significant increase in copper consumption. Even if only moderate forecasts for the number of the EVs become true, production of the base metals must increase by tens of percentages, or even more than double. At the same time, pyrometallurgical processes have to produce fewer side products, such as slag, and maintain the quality level of the primary product, although raw material mixtures are increasingly complex and new elements are entering the processes in secondary raw materials. Therefore, it is imperative to continue the development of pyrometallurgical processes more efficiently and productively, while still improving their selectivity regarding slagging the unwanted material and recovering the desired elements. This Special Issue is for current advances in the pyrometallurgical processing of metals, including all aspects, namely, the basic unit processes and operations in a smelter, metallurgical engineering, furnace integrity, cooling systems, modelling, slag and offgas handling, to name a few. A collection of 13 papers deal with ferrous and ferroalloy development, and the processing of different raw materials for metal production.
blast furnace slag --- TiO2 --- titanium carbonitride --- viscosity --- limonite --- magnetization reduction roasting --- rotary kiln --- deposit --- fayalite --- FeO --- liquid phase --- medium manganese steel --- spinel inclusions --- Ce treatment --- modification mechanism --- copper concentrate --- pyrometallurgy --- flash smelting --- combustion --- classification --- spectroscopy --- PCA --- SIMCA --- PLS-DA --- k-NN --- support vector machines --- scandium --- master alloys --- aluminum alloys --- metallothermy --- vacuum induction melting --- factsage --- nickel laterite --- non-melting reducing --- sodium chloride --- magnetic separation --- garnierite --- vacuum carbothermal reduction --- mechanism --- CaF2 --- recovery --- devolatilization --- torrefied biomass --- bio-coal --- volatile matter --- reduction --- blast furnace --- multistage and deep reduction --- low-oxygen high titanium ferroalloy --- inclusions --- melt separation --- slag-metal separation --- hearth drainage --- iron and slag flow --- interface phenomena --- CaO-SiO2-FetO-P2O5 slag system --- distribution ratio of phosphorus --- dephosphorization --- n·2CaO·SiO2-3CaO·P2O5 solid solution --- B2O3 --- vanadium–titanium sintering --- metallurgical properties --- microstructures --- Søderberg electrodes --- submerged arc furnace (SAF) --- ferro-alloy production --- ferrochrome --- electrical resistivity --- degree of graphitisation --- bulk density --- porosity --- compressive breaking strength
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