碳酸稀土沉淀废水回用配制皂化剂

Preparing Saponifier by Reusing Precipitation Wastewater of Rare Earth Carbonate

根据沉淀废水中含氯化钠浓度,同时根据回用本分离段萃余液中所含稀土元素的碳酸盐沉淀废水配制皂化剂,结果表明,回用碳酸稀土沉淀废水节省了新水、减少沉淀废水蒸发、浓缩体积、提高皂化废水中氯化钠的浓度、降低了回收氯化钠能源消耗,同时提高了稀土收率,降低有机相消耗。

The saponifier were prepared by resuse of rare earths carbonate precipitation wastewater according to the concentration of sodium chloride and concentration of rare earth elements in the raffinate of the separation section.The results show that the fresh water was saved,the volume of evaporating and concentrating the precipitation wastewater was decreased,the concentration of sodium chloride in th saponification wastewater was increased,the energy consumption of recycing sodium chloride was decreased,the yield of rare earths was improved and the consumption of organic was decreased by resuing the precipitation wastewater.