储能式余热回收技术在钽铌湿法冶炼中的应用  

Application of Energy Storage Waste Heat Recovery Technology in Tantalum/Niobium Hydrometallurgy

作　　者：江燕 戴和平 陈淑柳 高志强 JIANG Yan;DAI He-ping;CHEN Shu-liu;GAO Zhi-qiang(Jiujiang Tanbre Co.,Ltd.,Jiujiang 332014,China;Jiangxi Jinchuang Artificial Environment Co.,Ltd.,Nanchang 330200,China)

机构地区：[1]九江有色金属冶炼有限公司,江西九江332014 [2]江西今创人工环境有限公司,江西南昌330200

出　　处：《稀有金属与硬质合金》2023年第6期29-32,共4页Rare Metals and Cemented Carbides

摘　　要：钽铌湿法冶炼生产钽铌氧化物过程中,钽铌氢氧化物调洗工序会产生大量高氨氮碱性废水,目前多数冶炼厂采用汽提脱氨塔处理碱性废水,处理后的合格废水温度一般大于70℃;钽铌氢氧化物煅烧工序会产生大量高温废烟气。本文介绍的储能式余热回收技术利用板式换热器回收废水中余热,利用烟气换热器回收废烟气中余热。在钽铌湿法冶炼中将两种换热方式进行组合,能实现回收余热并产生高于70℃的热纯水,有效节约能源。In the process of tantalum niobium hydrometallurgy producing tantalum/niobium oxides,the washing of tantalum/niobium hydroxides generates a large amount of alkaline wastewater with high ammonia nitrogen content,which is treated with stripping deammoniation columns by most smelting plants currently.The qualified treated wastewater generally has a temperature higher than 70℃.And a great deal of high-temperature waste flue gas is generated with the calcination of tantalum/niobium hydroxides.The energy storage waste heat recovery technology introduced in this paper utilizes a plate heat exchanger to recover waste heat from the wastewater and a flue gas heat exchanger to recover waste heat from the waste flue gas.The combination of these two heat exchange methods in tantalum/niobium hydrometallurgy could recover waste heat and generate hot pure water above 70℃,effectively saving energy.

关 键 词：钽铌湿法冶炼 废水 废烟气 余热回收 板式换热器 烟气换热器 

分 类 号：TF841.6[冶金工程—有色金属冶金]