中南大学学报（自然科学版）2025，Vol.56Issue(6)：2180-2191,12.DOI:10.11817/j.issn.1672-7207.2025.06.004
铅火法冶炼过程中锡元素高效富集新工艺研究
Study on new process of high efficiency enrichment of tin element in process of lead pyrometallurgy
摘要
Abstract
More tin elements are often accompanied in the lead smelting process.At present,most lead smelters have the problem that tin cannot be recovered or the recovery rate is low.In this paper,the tin element of a smelter in Shandong Province was tracked and surveyed and the trend and distribution of tin element were determined firstly.Secondly,the reduction experiment and the liquation refining experiment were carried out.The results show that by adding a certain amount of copper in the lead reduction liquation refining process,the recovery rate of tin in the reduction process can be increased from 54.2％to 77.7％and the recovery rate of tin in the liquation refining process can be increased from 67.3％to 94.2％by adjusting the liquation refining temperature and time.The optimal process parameters of the reduction experiment are set as follows.The mass fraction of copper in the mixed concentrate is 1.6％,the amount of reducing agent added is 5％of the mass of the mixed concentrate,the reduction temperature is 1 180 ℃,and the reduction time is 75 min.The optimum parameters are set as follows.The experiment liquation refining temperature is 360 ℃ and the liquation refining time is 90 min.According to the optimum process parameters,the recovery rate of tin can reach about 70％in reduction smelting process and 94％in fire refining process.关键词
铅冶炼/还原熔炼/火法精炼/配矿/锡元素/富集Key words
lead smelting/reductive melting/fire refining/blending ore/tin element/enrichment分类
矿业与冶金引用本文复制引用
曲超,马保中,董准勤,徐新淼,李雪山..铅火法冶炼过程中锡元素高效富集新工艺研究[J].中南大学学报（自然科学版）,2025,56(6):2180-2191,12.基金项目
国家重点研发计划项目(2022YFC2904200)(Project(2022YFC2904200)supported by the National Key Research and Development Plan of China) （2022YFC2904200）
