离子型稀土矿山无铵绿色开采对典型生物的影响  

Influence of Ammonium-free Mining of Ion-absorbed Rare Earth Mines on Typical Creatures

作　　者：张启军[1] 王旭 任锋[1] ZHANG Qi-jun;WANG Xu;REN Feng

机构地区：[1]中国恩菲工程技术有限公司,北京100038

出　　处：《有色冶金节能》2022年第3期82-85,共4页Energy Saving of Nonferrous Metallurgy

摘　　要：离子型稀土无铵绿色开采工艺采用硫酸镁替代硫酸铵作为浸矿剂,以氧化镁作为沉淀剂,从根本上避免了氨氮对环境的影响,是一种绿色开采工艺。为研究新型绿色无铵开采工艺对环境的影响,本文进行了植物盆栽实验、斑马鱼急性和慢性毒性实验,研究硫酸镁浸矿剂浓度对植物和鱼类的影响。试验结果表明,硫酸镁浸矿剂浓度对植被和水生生物的环境影响为可接受范围,验证了无铵绿色工艺的环境可行性。As a green mining technology,the ammonium-free mining process for ion-absorbed rare earth ore adopts magnesium sulfate as leachant instead of ammonium sulfate and magnesium oxide as precipitant,essentially avoiding the impact of ammonia nitrogen on the environment.To find out the influence of the new green and ammonium-free technology on the environment,pot-grown plant tests and acute and chronic toxicity tests on zebrafish were carried out to study the concentration of magnesium sulfate on plants and fish.The experimental results show that the concentration of magnesium sulfate has an acceptable influence on the growing environment of vegetation and aquatic life,verifying the environmental feasibility of the ammonium-free mining technology.

关 键 词：离子型稀土矿 绿色开采 盆栽实验 毒理实验 硫酸镁 

分 类 号：TF845[冶金工程—有色金属冶金]