During half a century, many scholars both abroad and home carried out the researches about leaching-out metals from manganese nodules, and brought forward a lot of technologies and methods.

• 初步实验结果表明:该工艺在技术上是可行的,在一定温度、空气流量及碱矿比条件下,锰结核中的锰大部分能被从结核中浸出。