Research on Removal of Chlorine Ions in Zinc Sulfate Solution by Copper Slag
This article takes zinc sulfate solution as the object and studies the technology of removing Cl-by metal salt precipitation.The results show that using zinc copper slag as the removal agent,controlling the solution temperature of 65℃,reaction time of 1.5 hours,and pH value of 1.5,the chlorine removal effect can reach over 85％.At the same time,the parameter conditions for the regeneration and recycling of zinc copper slag after removing Cl-were studied.The optimal process conditions were:using NaOH for regeneration,controlling the solution temperature at 95℃,reaction time for 3 hours,and pH value of 3.Under these conditions,the chlorine removal rate could reach 88％.The economic comparison between opening the zinc copper slag after removing Cl-and recycling it was conducted through experiments.The results showed that the cost of opening the zinc copper slag after removing Cl-was much higher than the cost of recycling it.
hydrometallurgy of zinccopper slagzinc sulfate solutionChlorineremoval
万方数据
维普
