Meanwhile, an effective method of obtaining acidic components from heavy oil by solvent extraction was provided and the suitable extraction condition was explored.
同时建立了一种有效的溶剂萃取、浓缩超稠油中酸性组分的分离方法，并探讨了适宜的萃取条件。
3
Research work on the solvent extraction for palladium recovery from acidic solution developed in recent 10 years was described.