摘要
对某稀土湿法冶炼工艺进行了以清洁生产为核心的技改方案研究．在清洁工艺设计的基础上，通过工艺原理分析和试验，说明其革新工艺的经济有效性：从酸浸废液中年回收硫酸亚铁３０００ｔ；从碱转废液中年回收硫酸钠３０００ｔ；从废水中回收冰晶石，氟回收率８６％；生产废水排放量削减５８％；废水泥量削减９０％；直接经济效益年１５０万元以上；
In the paper,cleaner production is being adopted to the technological transformation of rare earths hydrosmelting.On the basis of the cleaning process design the economy and reasonability were expounded by tests and analysis of process principle:reuse 3000t/a FeSO47H2O from acid wastewater;reuse 3000t/a Na2SO4 from alkaline wastewater;F- could be recovered at the rate of 86%;the quantity of wastewater can be reduced by 58% and of waste rock can be reduced 90%;the economical benefits can reach above 150 ten thousand Yuan per year the effluent meet with the national standards.
出处
《环境科学》
EI
CAS
CSCD
北大核心
1999年第4期79-82,共4页
Environmental Science
关键词
稀土
清洁生产
湿法冶炼
废水处理
资源回收
rare earths,cleaner production,hydrosmelting,resource recovery,wastewater treatment.
