A hydrometallurgical process to treat carbon steel electric arc furnace dust

Hydrometallurgical process for zinc recovery from electric arc furnace dust (EAFD)

“…During the meltdown of scrap, volatile components are fumed off and are collected with particulate matter in the off-gas cleaning system [1,2]. During the metal fusing process, the electric arc furnace (EAF) can reach temperatures of 1600 • C, or even higher, and many components of the charge, including iron, zinc, and lead, are volatilized and entered the vapour phase.…”

Hydrometallurgical processing of carbon steel EAF dust

“…In alkaline leaching processes as Amax or Cebedau [24,25] heavy metals like zinc, lead and other are leached in alkaline media whereas iron is not. In acidic processes, the EAF dust is leached by acetic acid [18,26], sulphuric acid [27,28] or hydrochloric acid [29,30]. Several pilot plants were built to test hydrometallurgical technologies such as the Ezinex process [31].…”

Metal recovery from the copper sulfide tailing with leaching and fractional precipitation technology

“…The concentrations of Cu, Zn, Mn, and Fe were 1.45, 0.18, 0.20, and 9.31 g/L, respectively, which are significantly greater than those published in previous reports (Pepe et al, 2007). The metal recovery from the leaching filtrate was preceded by fractional precipitation with the addition of different chemical agents (Barrnitt et al, 1992;Xie et al, 2005). At first, the pH of the leaching filtrate was adjusted to 3.0 with the addition of Ca(OH) 2 to recover Fe as hydroxide.…”