| 摘要 |
<p>A method for the production of metals or alloys (e.g. Cu, Ni, Pb, Fe, steel Sn and Zn) comprises feeding ores or concentrates into or on to a flowing stream of a molten material (ores or concentrates and/or the products of a previous operation) in a smelting zone, inducing turbulence and circulation in said zone, the molten product then flowing to a refining zone, the slag produced being caused to flow to a slag settling zone, the flow of slag and metal being countercurrent in at least part of the refining zone. The molten material is preferably agitated in the refining zone by a blast of oxygen containing gas and in the smelting zone by the tangential feeding of the ores and concentrates. The ores or concentrates, mixed with a carbonaceous reducing agent in the case of oxides, are preferably preheated prior to feeding into the melt stream.</p> |
