| 铅锌混合矿氧气熔融脱硫 |
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| 引用本文： | 欧阳坤,豆志河,张廷安,刘燕.铅锌混合矿氧气熔融脱硫[J].有色金属科学与工程,2020,11(2):1-6. |
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| 作者姓名： | 欧阳坤 豆志河 张廷安 刘燕 |
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| 作者单位： | 东北大学多金属共生矿生态化冶金教育部重点实验室，沈阳 110819 |
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| 摘 要： | 随着烧结+鼓风炉工艺处理铅锌混合精矿能耗高和环境污染的问题日益凸显，使用熔池熔炼法替代烧结工艺成为铅锌混合精矿较好的火法冶炼工艺选择。采用静态法和XRD技术研究了O2流量、温度、入炉炉料成分对铅锌混合矿脱硫的影响以及脱硫渣物相变化。结果表明:与烧结工艺相比，铅锌混合精矿高温熔融脱硫时间短、脱硫率高。O2流量的增加和温度的提高有利于铅锌混合矿脱硫反应的进行，铅锌混合矿脱硫率随着ω（Fe）/ω（SiO2）和ω（CaO）/ω（SiO2）的增加而降低，但在1 400 ℃时ω（CaO）/>ω（SiO2）的增加有利于脱硫速率的加快和脱硫率的增加。当反应温度为1 250 ℃时，随着熔渣中Fe/SiO2的增加，熔渣中尖晶石相（ZnxFe3-xO4+y）开始形成并增多。
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| 关 键 词： | 铅锌混合矿 熔池熔炼 氧气脱硫 |
| 收稿时间： | 2019-12-09 |
The desulfurization process of lead and zinc mixed concentrate with oxygen |
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| OUYANG Kun,DOU Zhihe,ZHANG Ting’an,LIU Yan.The desulfurization process of lead and zinc mixed concentrate with oxygen[J].Nonferrous Metals Science and Engineering,2020,11(2):1-6. |
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| Authors: | OUYANG Kun DOU Zhihe ZHANG Ting’an LIU Yan |
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| Affiliation: | Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education, Northeastern University, Shenyang 110819, China |
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| Abstract: | Due to the high energy consumption and environmental problems of sinter-blast furnace process of lead and zinc mixed concentrates,the use of bath smelting process instead of sintering process have become an alternative choice.The static method and XRD technique were used to study the effects of O2 flow rate,temperature and burden composition on desulfurization of lead and zinc mixed concentrates as well as the phase change of molten slag.The research results show that the high temperature melt desulfurization of lead and zinc mixed concentrates has the advantages of short smelting time and high desulfurization rate.The increase of O2 flow rate and reaction temperature was beneficial to the desulfurization reaction of lead and zinc mixed concentrates.The desulfurization rate of lead and zinc mixed concentrates decreased with the increase of Fe/SiO2and CaO/SiO2 mass ratio.However,when experimental temperature reached at 1400℃,the increasing CaO/SiO2 mass ratio was conducive to the desulfurization of lead and zinc mixed concentrates.The spinel phase(ZnxFe3-xO4+y)was formed and increased with the increase of Fe/SiO2 mass ratio,when experimental temperature was at 1250℃. |
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| Keywords: | lead and zinc mixed concentrate direct smelting process oxygen desulfurization |
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