Abstract: Some organic and inorganic addition agents were tested in order to improve lixiviate rate of Manganese in rhodochrosite.The result showed that there was clear improvement of lixiviate rate of Manganese in normal hours when using organic addition agents such as glucose,sucrose,and so on,with the reaching more than 85%.Thus,they are advisable in eletrolytic manganese industry.Although thick sulfuric acid increases the lixiviate rate,it is not advisable due to its corrosiveness.

Key words: electrolytic Manganese, lixiviate rate, rhodochrosite, addition agent