This paper discusses the resource utilization of Fe-rich sludges generated as waste
products from water treatment, hydrometallurgy, surface finishing, and dye chemical …

In this work, the extraction of selected rare earth elements from bauxite residue by dry
digestion method followed by water leaching was investigated. Kinetic studies performed …

This study investigated the pressure leaching of lithium and other valuable metals from
lepidolite using NaOH and Ca (OH) 2. The findings showed that NaOH concentration …

During acid leaching of bauxite residue (red mud), the increase in dissolution of rare-earth
elements (REEs) is associated with a substantial co-dissolution of iron; this poses problems …

Coal fly ash (CFA) is an industrial solid waste discharged from coal-fired power plants. Due
to the high contents of aluminum and silicon, it can be direct used for synthesis of zeolites. In …

Currently, the utilization rate of red mud is very low, and the problems of occupying land and
polluting the environment are becoming increasingly prominent. This study utilized CaO to …

The key to the lithium extraction from α-spodumene is destroying the crystal structure. The
conventional commercial process requires high-temperature calcination to transform α …

The present work considers the neutralisation of bauxite residue (red mud) with CO 2 as a
potential technology for reducing the acid consumption in the acidic leaching step for metal …

CO 2 mineralization is a technological solution to reduce anthropogenic CO 2 emissions. It
is more cost-effective to use industrial wastes as feedstock than natural minerals and …

The influence of Na 2 SO 4 at chemical equilibrium in the NaOH-Al 2 O 3-SiO 2-Na 2 SO 4-H
2 O system were studied in synthetic Bayer liquors. Sodium aluminosilicate, otherwise …