Thermochemical Study on High Temperature Process of Zinc Production without Exhaustion of Carbon Dioxide

瞄准一种新的焦金属锌生产工艺的开发，在哪一种钼铜被用作反应剂，以减少锌硫在集中和不消耗碳二氧化物气体的金属锌生产工艺的情况下，新工艺在目前的研究中进行了热化和热化评估。the solubilities of ZnS and PbS in the ternary Cuy D22-ZnS-FeS and Cuy D22-ZnS-PbS Mattes at 1473和1523 K实际上是实验确定的，它被澄清了，因为在液体Matt中，ZnS的溶解度似乎很小。少于6 wt%。This result indicates that a part of？S in the concentrate charge in the smelting stage is not dissolved in the matte phase in the case that the amount of the circulated Cu？D22？D2S is comparably small。Raoultian的活性在ZnS和PbS中的协同作用被发现为9.8和1.3，其次，根据目前研究中发现的热化学和热同步数据， ... More 材料和热平衡已被评估为新工艺和随后的结果已获得。与100 - 160 ton per one ton of recovered metallic zinc must be circulated to avoid the over-heating of the reaction furns。Hence， the development of a technology to smoothly circulate the Cuy D22，D2S medium will be a key to the new process。集中的氧化物和硫酸盐的热量只会在过程中的热量平衡中获得一个积分，而煤炭或可乐的燃烧将需要在氧化阶段来补偿较弱的热量。一种用于燃烧的氧气丰富空气的用途将是有效的，以显著地减少碳材料的数量，以便使用。“生产的泥浆的敏感热度和温室气体被评估为足够高，而它们的恢复和使用也是至关重要的。”The gas discharged from the volatilization stage is fundamentally free from COイD22イD2 and SOイD22イD2 and the reoxidation of zinc vapor by these gases will be avoidable。这给了我们一个可能的机会，直接从被污染的气体中提炼锌，通过选择性条件的含义。“液体铜和高等级垫子的使用被认为是一种淡化媒体，可以更好地恢复稀有金属，但可以缺乏先进性来消除砷和抗微生物的深层元素。”Less（低）

Aiming at development of a new pyrometallurgical zinc production process, in which molten copper is used as a reactant to reduce zinc sulfide in the concentrate and which makes metallic zinc without exhaustion of carbon dioxide gas, the new process was thermodynamically and thermochemically evaluated in the present study.Firstly, the solubilities of ZnS and PbS in the ternary CuィイD22ィエD2S-ZnS-FeS and CuィイD22ィエD2S-ZnS-PbS mattes at 1473 and 1523 K were experimentally determined and it was clarified that the solubility of ZnS in the liquid matte was considerably small at less than 6 wt%. This result indicates that a part of ZnS in the concentrate charge in the smelting stage is not dissolved in the matte phase in the case that the amount of the circulated CuィイD22ィエD2S is comparably small. The Raoultian activity coefficients of ZnS and PbS in the matte were found to be 9.8 and 1.3, respectively.Secondly, based on the thermochemical and thermodynamic data obtained in the present study, the … More material and heat balances were evaluated for the new process and the following results were obtained. A huge amount of liquid CuィイD22ィエD2S with 100 - 160 ton per one ton of recovered metallic zinc must be circulated to avoid the over-heating of the reaction furnaces. Hence, the development of a technology to smoothly circulate the CuィイD22ィエD2S medium will be a key to the new process. The heat of oxidation f the sulfides in the concentrates is only one credit in the heat balance in the process, and the combustion of coal or coke will be needed in the oxidation stage to compensate the lacking heat. A use of the oxygen-enriched air for the combustion will be effective to remarkably decrease the amount of the carbonaceous materials to be used. The sensible heats of the produced slag and the exhaust gas were evaluated to be enormous, and their recovery and utilization are significantly important. The gas discharged from the volatilization stage is fundamentally free from COィイD22ィエD2 and SOィイD22ィエD2 and the reoxidation of zinc vapor by these gases will be avoidable. This gives a possibility to refine zinc directly from the discharged gas by means of selective condensation. The use of liquid copper and high grade matte as smelting media was considered to be profitable for recovering the precious metals but to be inadvantageous for eliminating the detrimental elements of arsenic and antimony. Less