| 摘要 |
This invention addresses the elimination of both organic and inorganic total carbon resulting from carbonates and organic matters contained in zinc silicate concentrates. As it take full advantage of the neutralizing power of the flotated concentrate, this process has two additional benefits: its high efficiency in removing magnesium, an element that is detrimental to the electrolytic process in zinc production, and its capacity of fully purging the excess waters in the hydrometallurgical zinc process which causes dilution in the metal production circuit. This process consists of the direct treatment of the zinc silicate concentrate in autoclaves together with secondary solutions, skipping the calcination (600-900° C.) or calcine grinding stages, as the granulometry that is obtained from the concentrate flotation and enrichment process is enough for reactions at high temperatures and pressures.
|
