Mineralogical appraisal is an important tool for both mining and industrial processes. X-ray powder diffraction analysis (XRPD) can deliver fast reliable mineralogical quantification results to aid processes improve ore recoveries. Furthermore, fluorescence (XRF) chemical data, thermal (TA), Fourier-transformed infrared spectroscopy (FTIR) be used validate refine XRPD results. assessment of non...

Long term success of rehabilitation on bauxite-processed residue storage areas is dependant on establishing a capping stratum which will satisfy water use and nutrient cycling requirements of the intended plant community. Bauxite residue sand is the primary growth media for rehabilitating residue disposal areas (RDAs) in Western Australia however; the sustainability of the vegetation cover can ...

in this work, hydrochloric acid is used to remove iron impurities in the bauxite ore contained in the diasporite mineral located in the sari region. the bauxite ore was calcined at different temperatures and times, and then dissolved in a hydrochloric acid solution. after determining the optimum calcination conditions in 1 h at 900 °c, the response surface methodology (rsm) with four factors in...

low grade diasporic bauxite in the jajarm mine with an a/s (al2o3/sio2) ratio of 2.3 is not usable in the bayer process at jajarm alumina complex. due to the severe interlocking effect between the diaspore and aluminosilicate minerals (chamosite and kaolinite) and iron-containing minerals in a microcrystal matrix, the thermo-chemical treatment, which is independent from micro-mineralogy, was ch...

In this work, the ash fusibility behaviour of selected agricultural residues and their blends with lignite was studied, by carrying out chemical, mineralogical, thermogravimetric analyses calculating slagging/fouling indicators for predicting deposition tendencies in boilers. Two additives, bauxite, clinochlore, were used at varying amounts to reduce melting, followed examining anti-fusion mech...

Sampling campaigns were conducted at the industrial bauxite wash circuit of Juruti Bauxite Mine in Pará, Brazil. The beneficiation consisted crushing, scrubber washing, wet screening, hydrocyclone classification, and fltration. Considering laboratory processing samples statistical analyses historical operation databases, mass balances obtained. Integrated operating parameters enabled calculatio...

In recent years, the rapid development of domestic alumina industry has greatly accelerated consumption high-alumina–silica-ratio bauxite resources in China. The an efficient and clean utilization technology applicable to low-grade China is not only a requirement for resource environmental protection, but also powerful guarantee maintain sustainable China’s aluminum industry. Based on this, aut...

We reviewed specific chemical exposures and exposure assessment methods relating to published and unpublished epidemiological studies in the alumina and primary aluminium industry. Our focus was to review limitations in the current literature and make recommendations for future research. Although some of the exposures in the smelting of aluminium have been well characterised, particularly in po...