Nickel sulphide concentrate processing via low-temperature calcination with sodium chloride. Part 1 – Identification of interaction products

Hazard-free treatment of electrolytic manganese residue and recovery of manganese using low temperature roasting-water washing process

“…Although, a majority of the EMR related studies have led to the development of hazardfree EMR treatment technologies, none of these processes are so far in commercial use due to the need for high levels of additional materials, which results in high costs and additional waste streams. Low-temperature roasting (Mu et al, 2018;Khanlariana et al, 2019), is an eco-friendly and low-cost process that has been widely used for the J o u r n a l P r e -p r o o f treatment of various industrial solid wastes (Li et al, 2014;Cui et al, 2018) and the recovery of valuable materials from secondary resources (Li et al, 2017;Aleksandrov et al, 2017;Aleksandrov et al, 2019;Liu et al, 2019). In this work, a combined low temperature roasting-water washing process was studied for the hazard-free treatment of EMR material.…”

Process development for recovering critical elements from acid mine drainage

“…To achieve further separation and purification, the precipitate was dissolved, and the resulting solution was subjected to solvent extraction. As reported in the literature (Aleksandrov et al, 2019), metal sulfides can be converted into more soluble forms using low-temperature sulphatizing or chlorinating calcination. Blank calcination without additives has also been employed, which directly transform metal sulfides into metal oxides or sulfates (Yu et al, 2013).…”

Experimental and computational approaches to study the chlorination mechanism of pentlandite with ammonium chloride

“…Conventional chlorinating agents include gaseous chloride (Cl 2 and HCl) and solid chloride. [12][13][14][15][16] Although Cl 2 and HCl exhibit excellent chlorinating performances, the high requirements for equipment and potential hazards restrict their application. Recently, ammonium chloride (NH 4 Cl) has shown advantages in extracting valuable metals from raw materials, such as copper and nickel sulde ores, at a considerably low temperature while remaining active aer decomposition.…”