In the cyanidation process,the henna film on some monomer gold was restrained,and as a result,the leaching period was shortened and the recovery rate was enhanced.

• 在氰化过程中,金精矿中的一些单体金粒表面上形成的红褐色薄膜得到抑制,缩短了氰化浸出时间,提高了金浸出率。