净水技术2013，Vol.32Issue(4)：35-38,4.
酸解红土镍矿废水中的二价镁(Mg2+)脱除工艺
Technological Processes of Magnesium (Mg2+) Removal in Wastewater of Nickel Laterite after Acid Hydrolysis
王金博 1张召述 1夏举佩1
作者信息
- 1. 昆明理工大学化学工程学院,云南昆明650500
- 折叠
摘要
Abstract
The concentration of Mg2+ reaches 20 528.35 mg/L in the wastewater of nickel laterite after acid hydrolysis which cannot be used and discharged in production process.To remove Mg2+ for cyclic utilization is a key problem.The effective factors of using a variety of alkaline mineral to remove Mg2+ in wastewater were researched.The results show that lime,slag and coal ash have an effect on removing Mg2+.Lime is a major factor affecting the extractions rate of Mg2+,meanwhile two or more minerals mixed can produce stack effect.When the ratio of lime and coal ash is up to 1,total dosage is 150 g/L,temperature is 20 ℃,stirring time is 120 min,removal rate of Mg2+ reaches more than 90 ％.关键词
红土镍矿/含镁废水/石灰/钢渣/粉煤灰Key words
nickel Laterite/magnesium-containing wastewater/lime/steel slag/coal ash分类
资源环境引用本文复制引用
王金博,张召述,夏举佩..酸解红土镍矿废水中的二价镁(Mg2+)脱除工艺[J].净水技术,2013,32(4):35-38,4.
