The extraction results showed that among the solvents, N, N-dimethylformamide ( DMF) was better than dimethyl sulfoxide, ethyl cyanide and methanol. 试验发现,溶剂N,N-二甲基甲酰胺(DMF)的萃取效果优于二甲亚砜、乙腈及甲醇。
Review of technique of elution of gold from carbon by the ethyl alcohol distillation process without cyanide 再评酒精蒸馏无氰解吸工艺的特点&兼谈选择解吸工艺时应注意的问题