| 摘要 |
<p>The invention concerns a process for recovery of zinc from sphalerite containing ores or concentrates, whereby, in a first step, these ores or concentrates are submitted to a thermal treatment to convert sphalerite to a substance that is more readily attacked in hydrometallurgical media and, in a second step, said substance is leached, whereby said thermal treatment consists essentially of a heating cycle performed in such conditions that sphalerite is, at least partly, transformed to wurtzite, and of a rapid cooling cycle, performed in such conditions as to retain, at least partly, this wurtzite at low temperature.</p> |
