Although the commercial beneficiation of iron ores by magnetic separation uses well established technology and equipment, there are still some fundamental and applied questions that have not been addressed in current published documentation. The main aspects investigated in this paper included the magnitude of the applied magnetic field, the effects of various matrices and the effects of the particle

The Knelson concentrator (KC) is widely used in gold ore and other precious metal ore processing technology because of its excellent separation performance. The development history and types of KCs are reviewed in this paper. Research on the separation mechanism and characteristics of KCs was analyzed and discussed, including the separation characteristics, influencing factors, modification equipment

Grinding and flotation of sulfide-containing ores produce metastable, partially oxidized sulfur compounds known as thiosalts, which are notorious contributors to receiving water bodies’ toxicity by producing delayed acidity. Thus, the continuous optimization of thiosalts oxidation into sulfate is required before treated mine water is discharged into natural streams, as thiosalts oxidation slows down

Global demand for rare earth metals (REMs), including yttrium, has motivated the scientific community to focus on the recovery of such metals from electronic waste materials. Herein, a solvent extraction method was used to isolate and recover yttrium from the original leaching solution from the fluorescent lamp waste powder dissolved by sulfate. The operating parameters were systematically investigated

Solid-liquid separation is an indispensable, challenging and energy-intensive process in the mineral processing industry. An accurate assessment of the filter cake structure is critically important for predicting and controlling the dewaterability of mineral slurries. However, due to the random particle arrangement and complex pore network of filter cake, such microscopic information is difficult to

A significant proportion of invisible gold is hosted by pyrite and the successful recovery of this gold requires a high recovery of pyrite in flotation. In the industry, the flotation of gold-bearing pyrite is operated in a broad range of pH and collector concentration with different types of grinding media. Following the previous study at pH 5.0 and 7.0, the current study investigated the interaction

Benzohydroxamic acid (BHA) is a universal collector for the flotation of oxidized minerals because of its excellent selectivity. However, improving collecting efficiency of BHA still remains a challenge in mineral processing. We report herein the substituted aryl-hydroxamic acids acted as collectors for scheelite flotation to compare the collecting effect with BHA. The collecting performance of BHA

Conventional chemical precipitation methods of salinity removal from mine drainage (MD) are ineffective to deal with sulfate concentrations lower than the solubility of gypsum (CaSO4·2H2O). As the standards of sulfate concentrations become more stringent, this limitation of conventional methods of precipitation drives the need for complementary or alternative solutions. In this context, this study