钨冶炼高盐废水资源化制备高浓度酸碱溶液  

Valorization of high-salinity wastewater from tungsten smelting for synthesis of high-concentration acid and alkali solutions

作　　者：王松林 雷纯鹏 廖德进 邹元焘 高阳 陶黎明 卢永琪 王建军[4] 高志勇[4] WANG Songlin;LEI Chunpeng;LIAO Dejin;ZOU Yuantao;GAO Yang;TAO Liming;LU Yongqi;WANG Jianjun;GAO Zhiyong(Jiangxi Xiushui Ganbei Tungsten Industry Co.Ltd,Jiujiang 332400,Jiangxi,China;China Tungsten and Hightec Materials Co.Ltd.,Chenzhou 423037,Hunan,China;Datang Environment Industry Group Co.Ltd.,Beijing 100033,China;School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China)

机构地区：[1]江西省修水赣北钨业有限公司,江西九江332400 [2]中钨高新材料股份有限公司,湖南郴州423037 [3]大唐环境产业集团股份有限公司,北京100033 [4]中南大学资源加工与生物工程学院,长沙410083

出　　处：《矿冶》2025年第1期97-103,共7页Mining And Metallurgy

摘　　要：针对钨冶炼厂废水NaCl含量高、组分复杂的特点,提出“双极膜电渗析—膜蒸馏”的处理工艺,实现其循环利用。10 t中试结果表明,高盐多组分钨冶炼废水经膜处理可得到浓度大于206 g·L^(-1)的盐酸溶液和3 380 g·L^(-1)的氢氧化钠溶液,其中NaCl综合利用率为80.3%。所制备的高浓度酸碱可循环应用于钨冶炼碱煮和酸分解流程中。该膜处理工艺可实现85%高盐多组分钨冶炼废水资源化利用,为彻底解决钨冶炼废水无污染问题提供了技术支撑。Aiming at the characteristics of high NaCl content and complex composition in tungsten smelting wastewater,a hybrid“bipolar membrane electrodialysis–membrane distillation”process was proposed to achieve its closed-loop recycling.Pilot-scale tests(10-ton system)demonstrated that the high-salinity multi-component tungsten smelting wastewater could be converted into hydrochloric acid solution(>206 g·L^(-1))and sodium hydroxide solution(3380 g·L^(-1))via membrane treatment,with a NaCl utilization efficiency of 80.3%.The recovered high-concentration acid and alkali solutions were successfully reapplied in the alkaline digestion and acid decomposition processes of tungsten smelting.This membrane-based technology achieved 85%resource recovery from high-salinity multi-component tungsten smelting wastewater,providing a robust technical pathway for pollution-free management of industrial effluents in tungsten metallurgy.

关 键 词：钨冶炼 高盐废水 双极膜电渗析 膜蒸馏 酸 碱 

分 类 号：TF8[冶金工程—有色金属冶金] X703[环境科学与工程—环境工程]