Inorganic Chemicals Industry >
Research on milling and leaching process of manganese in electrolytic manganese slag
Received date: 2020-08-19
Online published: 2021-02-06
In order to promote the comprehensive utilization of electrolytic manganese slag and reduce the waste of manganese resources,using electrolytic manganese slag as raw material,the influence of milling and leaching process conditions on the leaching efficiency of manganese element was researched.The methods of XRD,SEM,XRF and AAS were used to test and analyze the phase,composition and manganese content of manganese slag samples.Results showed that the content of fine particles and the content of manganese in the fine particles were obviously increased via the secondary milling process of manganese slag.Due to the increase of fineness and surface area,the reaction speed of acid leaching of manganese mineral particles in manganese slag was accelerated and the leaching rate was increased.The leaching rate of manganese was obviously affected by time and temperature,but the influence of temperature was more important.The suitable temperature of leaching reaction should be in the range of 70~85 ℃.The leaching rate of manganese was 97.15% when the reaction tempera-ture was 85 ℃ and the time was 1 h.
Key words： electrolytic manganese slag; manganese element; milling; leaching
Tao Li , Guohua Ma . Research on milling and leaching process of manganese in electrolytic manganese slag[J]. Inorganic Chemicals Industry, 2021 , 53(2) : 66 -70 . DOI: 10.11962/1006-4990.2020-0172
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