高温还原法回收某铅锌鼓风炉渣中铅锌的试验研究

金属矿山 ›› 2025, Vol. 55 ›› Issue (8): 89-93.

高温还原法回收某铅锌鼓风炉渣中铅锌的试验研究

柳　林^1,2,3,4 　刘红召^1,2,3,4 　王　威^1,2,3,4 　方　霖^5,6 　曹耀华^1,2,3,4 　王　科^1,2,3,4

1. 中国地质科学院郑州矿产综合利用研究所,河南郑州 450006;2. 国家非金属矿资源综合利用工程技术研究中心,河南郑州 450006;3. 自然资源部多金属矿综合利用评价重点实验室,河南郑州 450006;4. 河南省黄金资源综合利用重点实验室, 河南郑州 450006;5. 江西省地质局生态地质大队,江西南昌 330030;6. 江西省地矿资源勘查开发有限公司,江西南昌 330030

出版日期:2025-09-15 发布日期:2025-09-16
通讯作者: 方　霖(1989—),男,工程师。
作者简介:柳　林(1989—),男,工程师。
基金资助:
深地国家科技重大专项(编号:2024ZD1004006);中国地质调查局地质调查项目(编号:DD20243355)。

Experimental Study on Recovery of Lead and Zinc from Blast Furnace Slag by High Temperature Reduction Method

LIU Lin ^1,2,3,4 　 LIU Hongzhao^1,2,3,4　 WANG Wei ^1,2,3,4　 FANG Lin ^5,6 　 CAO Yaohua ^1,2,3,4 　 WANG Ke ^1,2,3,4

1. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China; 2. China National Engineering Research Center for Utilization of Industrial Minerals,Zhengzhou 450006,China; 3. Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ore of Ministry of Land and Resources, Zhengzhou 450006,China;4. Comprehensive Utilization Key Laboratory of Gold Resource in He′nan Province, Zhengzhou 450006,China;5. Ecological Geology Brigade of Jiangxi Geological Bureau,Nanchang 330030,China; 6. Exploration and Development of Geology and Mineral Resources Co. ,Ltd. of Jiangxi Province,Nanchang 330030,China

Online:2025-09-15 Published:2025-09-16

摘要/Abstract

摘要： 某铅锌鼓风炉渣以方铁矿、磁铁矿、斜硅钙石等含铁氧化物和硅酸盐类矿物为主,ZnO 含量为 12. 30%, PbO 含量为 3. 31%,铅、锌、铜、铁具有较高回收价值。为了高效、环保开发利用该二次资源,以焦煤为还原剂,采用高温还原法开展了铅、锌回收工艺条件研究,考察了焙烧温度、焦煤用量、焙烧时间对铅、锌挥发率的影响,并结合试验现象推断过程中发生的化学反应。在试验确定的焙烧温度为 1 200 ℃ ,焦煤与矿样的质量比为 30%,焙烧时间为 1. 5 h 情况下,铅、锌挥发率分别达到 97. 12%和 97. 60%,且砷没有同步挥发,铅锌回收效果良好。焙烧渣中铁、铜的回收工艺条件确定将留待后续进行,拟采用磨矿—磁选工艺回收铁、浮选工艺回收铜,重金属含量大幅降低后的余渣将进行建材化利用,从而实现铅锌鼓风炉渣“无害化、减量化、资源化”处理的目标。

关键词: 鼓风炉渣　碳热高温还原　铅锌挥发率　综合回收利用

Abstract: A lead-zinc blast furnace slag was mainly composed of iron oxides and silicate minerals such as periclase, magnetite and clinoptilolite. The content of ZnO was 12. 30%,and the content of PbO was 3. 31%. Lead,zinc,copper and iron have high recovery value. In order to develop and utilize the secondary resource efficiently and environmentally,the process conditions of lead and zinc recovery were studied by high temperature reduction method with coking coal as reductant. The effects of roasting temperature,coking coal dosage and roasting time on the volatilization rate of lead and zinc were investigated,and the chemical reactions occurred in the process were inferred from the experimental phenomena. The volatilization rates of lead and zinc reached 97. 12% and 97. 60%,respectively,when the roasting temperature was 1 200 ℃ ,the mass ratio of coking coal to ore was 30%,and the roasting time was 1. 5 h,meanwhile the arsenic was not volatilized synchronously,so the lead and zinc recovery effect was good. The recovery process conditions of iron and copper in roasting slag will be determined later. It was proposed to use grinding and magnetic separation to recover iron and flotation to recover copper. The residues after a substantial reduction in heavy metal content will be utilized in the production of building materials,so as to achieve the goal of " harmless,reduction and recycling" treatment of lead-zinc blast furnace slag.

Key words: blast furnace slag,carbon thermal high-temperature reduction,volatilization rate of lead and zinc,comprehensive recycling and utilization

中图分类号:

TF813. 032. 4

柳　林, 　刘红召, 　王　威, 　方　霖, 　曹耀华, 　王　科, . 高温还原法回收某铅锌鼓风炉渣中铅锌的试验研究[J]. 金属矿山, 2025, 55(8): 89-93.

LIU Lin , 　 LIU Hongzhao , 　 WANG Wei , 　 FANG Lin , 　 CAO Yaohua , 　 WANG Ke , . Experimental Study on Recovery of Lead and Zinc from Blast Furnace Slag by High Temperature Reduction Method [J]. Metal Mine, 2025, 55(8): 89-93.

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