钽铌冶炼过程中三废治理及综合利用

Waste Management and Comprehensive Utilization of Tantalum and Niobium Smelting Process

简述了钽铌湿法冶炼过程中废气、废水、废渣产生的机理及治理方法。钽铌湿法冶炼过程中废气(酸性废气、含氨废气)净化排放问题、废水(酸性废水、氨氮废水)分类处理、废渣中回收有价金属和防止放射性物质的扩散是处理钽铌湿法冶炼的关键因素。采用防堵塞移动式筛板湍球吸收塔处理含酸废气、用吹脱汽提法处理含氨废水、分类回收冶炼过程废渣,既回收了钽铌有价金属,又确保钽铌湿法废气、废水、废渣达到国家排放标准。

The mechanism and treatment of waste gas,waste water and waste residue produced during the wet smelting process of tantalum and niobium were briefly introduced. The purification emissions of waste gas（acid waste gas,ammonia emissions）,the classification treatment of waste water（acid waste water,ammonia nitrogen wastewater）,the recovery of valuable metals from waste residue and the prevention of proliferation of radioactive materials were the key factors of tantalum and niobium wet smelting. Using anti-clogging mobile sieve plate turbulent ball absorption tower to dispose the acid waste gas,adopting tripping method to deal with the ammonia-containing wastewater and classified recycling waste slag of smelting process can not only recover tantalum and niobium valuable metals,but also ensure that tantalum and niobium wet gas,waste water,waste residue meet the national emission standards.