锌冶炼污酸中汞的脱除试验研究

本文对聚结脱除污酸中汞的工艺技术进行了详细研究,考察了聚结剂添加量、温度、混合时间、气浮时间和酸度等对汞脱除效果的影响,推荐工艺条件为：M201试剂浓度50g/L,添加量为6mL/L-污酸液、温度为室温、混合时间5min、气浮时间10min、通气速度0.1L/min,酸度为33.67 g/L,脱汞率能够达到99%以上,残余汞含量2mg/L；脱砷除率为31.56%,残余砷含量为21.9 mg/L；较好地分离污酸中砷和汞,实现一步除汞。

Experimental Research on the Removal of Mercury in Zinc Smelting Acid

This article has carried out a detailed study on the process of coalescing and removing mercury from pollutant acid, and investigated the influence of coalescing agent addition, temperature, mixing time, air flotation time and acidity on the mercury removal effect. According to the above test, it is recommended The process conditions are: M201 reagent concentration 50g/L, addition amount 6mL/L-soil acid solution, temperature at room temperature, mixing time 5min, air flotation time 10min, aeration rate 0.1L/min, acidity 33.67 g/L, deodorization The mercury rate can reach more than 99%, and the residual mercury content is 2mg/L; the arsenic removal rate is 31.56%, and the residual arsenic content is 21.9 mg/L; arsenic and mercury can be separated well, and mercury can be removed in one step.