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作 者:杨斌[1,2,3,4] 庞俭[1,3,4] 孔令鑫 徐俊杰[1,3,4] 李一夫[1,2,3,4] 徐宝强[1,2,3,4] YANG Bin;PANG Jian;KONG Lingxin;XU Junjie;LI Yifu;XU Baoqiang
机构地区:[1]昆明理工大学云南省有色金属真空冶金重点实验室,云南昆明650093 [2]昆明理工大学省部共建复杂有色金属资源清洁利用国家重点实验室,云南昆明650093 [3]昆明理工大学真空冶金国家工程研究中心,云南昆明650093 [4]昆明理工大学冶金与能源工程学院,云南昆明650093
出 处:《绿色矿冶》2023年第1期21-32,共12页Sustainable Mining and Metallurgy
基 金:国家自然科学基金项目(U1502271);科技部“创新人才推进计划”项目(2014RA4018);教育部“创新团队发展计划”项目(IRT1250);国家重点研发计划重点专项课题(2016YFC0400404);云南省科技领军人才项目(2014HA003);云南省科技计划重点项目(2014FA001)。
摘 要:针对传统粗锡精炼技术存在的工艺流程长、杂质脱除难、环境影响大等问题,提出“凝析离心-氧化除杂-连续结晶-真空挥发”粗锡精炼新技术思路。系统开展了粗锡凝析离心除铁砷、氧化除铜镍锑、连续结晶除银、真空挥发除铅铋的理论研究,阐明杂质组元固-液-气相间的迁移和分布规律,并进行小型实验、半工业实验和工业实验。实验结果表明,粗锡绿色短流程精炼新技术可生产纯度为99.99%的精锡,精锡品质达到国标4N锡要求。与传统粗锡精炼技术相比,粗锡绿色短流程精炼新技术具有原料适应性强、辅料消耗少、“三废”排放少、锡直收率高、渣率低、综合能耗低、生产成本低等优点。In view of the problems of traditional crude tin refining technology such as long process flow,difficulty in impurity removal and heavy environmental pollution,a new process composed of“condensation and centrifugation,oxidation,continuous crystallization and vacuum volatilization”was proposed for refining of crude tin.The theoretical research on the removal of iron and arsenic by centrifugation,copper,nickel and antimony by oxidation,silver by continuous crystallization and lead and bismuth by vacuum volatilization of crude tin has been systematically carried out.The migration and distribution law of impurity components between solid-liquid and gas phases has been clarified.And small-scale,semi-industrial and industrial tests have been carried out.The experimental results show that the new green short-process refining technology of crude tin can produce 99.99%refined tin,and the quality of refined tin can meet the national standard of 4N tin.Compared with the traditional crude tin refining technology,the new green short-process refining technology of crude tin has the advantages of strong adaptability of raw materials,less consumption of auxiliary materials,less discharge of“three wastes”,high direct tin yield,low slag rate sh,low comprehensive energy consumption,and low production cost.
关 键 词:粗锡 凝析离心 氧化除杂 连续结晶 真空挥发 精炼
分 类 号:TF814[冶金工程—有色金属冶金]
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