Minerals Engineering

simulation results of rupture distance and liquid redistribution of liquid bridge between rough surfaces.

The spreadsheet "Mill Filling Calculator.xlsx" calculates the mill and load volume and load mass for a AG/SAG or ball mill. It includes a worked example for the mill described in the paper, but can be copied and modified for a different dataset.

From the development of a semi autogenous grinding model based on effective grinding rates and internal classification presented during the nineties (Magne et al, 1995) the state of the art of the mathematical structure of this model was updated, presenting the development of each sub -process from the inside of the mill in detail. The developed model was used to demonstrate its predictive capacity using results from SAG pilot tests on copper ores. After applying the model, the ability to replicate the results obtained from size distributions of internal load, product and total filling level with an error of less than 4% was demonstrated. This article presents, from a simplified approach and based on the observation of the phenomena at pilot scale, the first approach and details of how to use the model for the development of a grinding simulator being an alternative to the current state of the art.

These are xrdml files able to be opened and analysed by most major manufacturer's XRD software. Bulk powder mineralogy was examined using X-ray diffractometry (XRD). Slags and salt efflorescences were crushed and milled in a tungsten carbide ball mill or agate mortar and pestle respectively. Preparation equipment was cleaned with a quartz sand blank and wiped with ethanol between samples. Powders were mounted on silicon crystal low background holders. Diffractograms were collected from 5° to 90° 2θ using a Malvern Panalytical Aeris diffractometer with PIXcel1D detector, operated at 40 kV, 15 mA with CuKα radiation at a slew rate of 6° 2θ min-1. Diffractograms were analysed using PANalytical HighScore+ software v. 2.2.1 with the 2015 International Centre for Diffraction Data Powder Diffraction File 2 inorganic mineralogical database and the FIZ Karlsruhe GmbH Inorganic Crystal Structure Database. Detection limits depend on crystallinity but were typically 0.1 – 2 wt%.

The Research data contain results of solvent extraction experiments of the rare earth elements lanthanum, praseodymium and neodymium. Deferents extraction conditions were tested, such as extractants, initial liquor pH, saponification degree of the extractants and the acid lactic concentration in the initial liquor. Th extraction of the metals in each condition and the Pr/La separation factor is informed in this file.

Experiment results showing size distribution, ash content and combustibles recovery for coarse coal flotation in a fluidized bed.

XRF DATABASE OF STUDIED HEAVY MINERALS

Bio-extraction of Phosphorus from Goethite Ore with Alkali Addition

Life cycle inventory and calculations for LCIA of Bear Lodge using TRACI 2.1

This dataset provides measurements of dielectric properties of granite, basalt and sandstone. The measurements cover a temperature range from RT to 1000°C, and frequencies between 397.2 and 2986 MHz. For further sample description, and thermo-physical properties in the same temperature range please refer to Hartlieb et al. 2016. Publications linked to these data are: Toifl, M.; Hartlieb, P.; Meisels, R.; Antretter, T.; Kuchar, F. (2017): Numerical study of the influence of irradiation parameters on the microwave-induced stresses in granite. In Minerals Engineering 103-104, pp. 78–92. DOI: 10.1016/j.mineng.2016.09.011. Hartlieb, P.; Toifl, M.; Kuchar, F.; Meisels, R.; Antretter, T. (2016): Thermo-physical properties of selected hard rocks and their relation to microwave-assisted comminution. In Minerals Engineering 91, pp. 34–41. DOI: 10.1016/j.mineng.2015.11.008. Toifl, M.; Meisels, R.; Hartlieb, P.; Kuchar, F.; Antretter, T. (2016): 3D numerical study on microwave induced stresses in inhomogeneous hard rocks. In Minerals Engineering 90 (90), pp. 29–42. DOI: 10.1016/j.mineng.2016.01.001.