Direct lead smelting method for processing zinc smelting slag by matching
A technology for zinc smelting slag and lead smelting, which is applied in the direction of improving process efficiency, and achieves the effects of high metal recovery rate, high valuable metal recovery rate and small footprint
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[0011] From figure 1 It can be seen that the present invention is matched with a specific example of the direct lead smelting method for zinc smelting slag. The zinc smelting slag (such as zinc leaching slag) sent from zinc smelting is first dried to a water content of ≤10%, and then mixed with lead concentrate. The ore and flux are mixed together (the proportion of zinc smelting slag can be 0-50%, and the proportion of flux is determined according to the content of Fe, Si, and Ca in the charge.) to obtain a lead-containing charge with stable composition, and then carry out the second stage ten Dried to a water content of ≤1%, ball milled to a particle size of <1mm after drying, then mixed evenly with coke and dust returned from the smelting process, continuously added to the oxygen material nozzle, and put into the lead smelting furnace together with industrial pure oxygen for flash smelting, respectively to obtain The product crude lead and by-product secondary zinc oxide, t...
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