Aiming at the industrial scale development of a Scandium (Sc)-selective leaching process 14 of Bauxite Residue (BR), a sufficiently numerous set of process design aspects has been 15 investigated, by appropriate exploitation of available experimental data. The interpretation of 16 experimental data for Sc leaching yield, with sulfuric acid as the leaching solvent, has shown 17 significant impac...

Bauxite is mined and transported by conveyor to a processing plant, screened and washed, then placed into blended stockpiles to feed the alumina refinery. While being stacked to the stockpile, the ore is sampled. Completed stockpiles must be acceptably close to target grade (composition), not only in alumina, but also in residual silica, carbon and sodium carbonate. The mine is an open-cut pit....

Rietveld Quantitative X-Ray Diffraction (RQXRD) has become commonplace for the analysis of everything from industrial materials, such as concrete, to geologic materials, such as bauxite ores or igneous rocks. The recent report on the IUCR Round Robin study on quantitative analysis indicates that accurate results may not always be obtained when using RQXRD, even with simple three-phase mixtures....

Abstract Rhetorical structure is helpful in improving how the writers maintain cohesion in their writings. This study examines how the Iraqi writers maintain cohesion in the text by analyzing the various rhetorical moves in Azzaman, an online Iraqi newspaper. To this purpose, twelve opinion articles from Azzaman Iraqi newspaper, published from January 2013 to June 2013 were analyzed. The findin...

Results are presented from X-ray absorption spectroscopy based analysis of As, Cr, and V speciation within samples of bauxite ore processing residue (red mud) collected from the spill site at Ajka, Western Hungary. Cr K-edge XANES analysis found that Cr is present as Cr(3+) substituted into hematite, consistent with TEM analysis. V K-edge XANES spectra have E(1/2) position and pre-edge features...

Piggery effluent may contribute to the eutrophication of waterways, if it is not treated before disposal, because of high levels of phosphorus. Limes and red muds (a residue from bauxite refining) were used to remove phosphorus from piggery effluent (41 mg litre(-1) total P). Lime-based amendments were more effective than the red muds at removing phosphorus when compared at the same liquid: sol...

Military personnel experiencing combat in Iraq and Afghanistan are suffering wounds that are much greater in number and variety than those endured by veterans of earlier wars. This circumstance is due, in part, to advances in medical science and technology. Soldiers, sailors and marines who suffered such severe wounds in earlier wars simply died because they were beyond the reach of then contem...