When the concentration of sulfuric acid is 98%, the effect is the best, and the transformation rate of Nd reaches over 95% after 180 min of leaching. Kinetic Modeling Kinetic experiments were …

In this study, the leaching behavior of water quenched ferronickel particles from RKEF process in sulfuric acid with atmospheric pressure was explored, and the idea of enhanced ferronickel …

2022年6月15日 · Vieceli et al. (2021) tested sulfuric acid leaching with NMC battery from 0.5 mol/L to 1.5 mol/L and stated that the concentration of 1 mol/L showed better metal recovery …

2017年8月1日 · In the present study, leaching of tailing containing 29.6 wt.% Ni in sulfuric acid was investigated. Tailing was characterized by X-ray powder diffraction (XRD), X-ray …

The sulfuric acid concentration significantly affected the leaching rate of Zn and Si, while it had no effect on the leaching of Ca and Cu. When the sulfuric acid concentration was increased from …

A direct leaching on the hydrometallurgical residue with sulfuric acid was developed in this work. The influence of leaching temperature, the leaching time, the particle size and the sulfuric acid …

The results show that the impurity removal efficiency by sulfuric acid curing-acid leaching is much higher than that by direct acid leaching, and the purity of the regenerated graphite can reach …

h the chloride [2–4] and sulfate methods. Sulfuric acid leaching of mineral rocks and concentrates containing titanium is a common method for t. e production of a pigment titanium dioxide. …

2023年10月10日 · Leaching experiments involved varying sulfuric acid concentrations, agitation at 400 RPM, and assessing temperature, acid dosage, leaching time, and solid–liquid ratio. Initial …

2023年6月9日 · Liquid extraction technology of the sulfuric acid leaching method remains the main processing method for off-balance ores and waste dumps which predominantly comprise …