Currently, almost all plants converted to autogenous smelting of copper-containing concentrates use flotation of converter slags (CS) while leaving 0.55–0.90% Cu in tailings that exceeds the industrial copper ore content. Most of the iron, zinc, lead and silicate components of CS enter dumps. The resultant converter slag concentrate (CSC) contains magnetite having an unfavorable effect on smelting furnace operation, and part of the copper is lost during magnetic separation of the resultant concentrate. A pyrometallurgical method for processing CS with its complete utilization is developed under laboratory conditions. Optimum parameters of the CS-based charge reduction melting are selected by crucible melting: in the first stage at 1250–1300°C copper is extracted into metallized product and the slag composition is adjusted, from which in the second stage at 1450–1500°C iron is reduced and recovered in cast iron. The method provides complete utilization of all slag components. 95% of the copper goes in metallized alloy, and about 0.02% Cu, 2–5% Fe, and 0.2% S remain in the slag of the second reduction stage. The copper-containing alloy is converted, and lead and zinc are transferred into sublimates. The metal-free slag obtained is suitable for use in building objects. In addition, hot slag of stage II depletion may be used as an excellent conversion flux, which is especially important when processing rich matte to blister copper, since this process occurs with an intense thermal balance.

中文翻译：

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充分利用所有成分处理转炉炉渣

目前，几乎所有转为自熔冶炼含铜精矿的工厂都使用转炉矿渣 (CS) 浮选，同时在尾矿中留下 0.55-0.90% 的铜，超过工业铜矿石含量。CS 的大部分铁、锌、铅和硅酸盐成分进入垃圾场。所得转炉渣精矿（CSC）中含有磁铁矿，对冶炼炉运行不利，部分铜在所得精矿磁选过程中流失。在实验室条件下开发了一种完全利用 CS 的火法冶金方法。通过坩埚熔炼选择 CS 基炉料还原熔炼的最佳参数：在 1250-1300°C 的第一阶段将铜提取到金属化产品中并调整炉渣成分，在第二阶段，在 1450-1500°C 的温度下，铁被还原并回收为铸铁。该方法提供了所有炉渣成分的完全利用。95% 的铜进入金属化合金，大约 0.02% 的 Cu、2-5% 的 Fe 和 0.2% 的 S 留在第二还原阶段的炉渣中。含铜合金被转化，铅和锌被转变成升华物。获得的无金属炉渣适用于建筑物品。此外，II 阶段耗尽的热渣可用作优良的转化助熔剂，这在将富铜锍加工为粗铜时尤为重要，因为该过程发生在强烈的热平衡中。大约 0.02% Cu、2-5% Fe 和 0.2% S 留在第二还原阶段的炉渣中。含铜合金被转化，铅和锌被转变成升华物。获得的无金属炉渣适用于建筑物品。此外，II 阶段耗尽的热渣可用作优良的转化助熔剂，这在将富铜锍加工为粗铜时尤为重要，因为该过程发生在强烈的热平衡中。大约 0.02% Cu、2-5% Fe 和 0.2% S 留在第二还原阶段的炉渣中。含铜合金被转化，铅和锌被转变成升华物。获得的无金属炉渣适用于建筑物品。此外，II 阶段耗尽的热渣可用作优良的转化助熔剂，这在将富铜锍加工为粗铜时尤为重要，因为该过程发生在强烈的热平衡中。