Magnetic Properties of Low Grade Manganese Carbonate Ore

2014 ◽  
Vol 664 ◽  
pp. 38-42
Author(s):  
Yan Wu ◽  
Bin Shi ◽  
Huan Liang ◽  
Wen Ge ◽  
Chun Jie Yan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Separation ◽  
Oxide Phase ◽  
Manganese Carbonate ◽  
Low Grade ◽  
Manganese Ore ◽  
Biomass Fuels ◽  
Rapid Reduction ◽  
Manganese Ores ◽  
Electrolytic Manganese

Rapid reduction roasting of low grade manganese carbonate ore by coal and biomass fuels from Hunan, China was investigated. Magnetic separation behaviors and magnetic properties of raw manganese ore and roasted manganese ores were analyzed. After reduction by coal and biomass fuels, the manganese ores demonstrate a new Mn-Fe oxide phase, showing obvious mixed magnetic behaviors of ferromagnet and paramagnet, and the magnetic susceptibilities of roasting ores rapidly increase to almost two orders of magnitude in comparison of the raw ores. The results show that magnetizing roasting technology could enhanced the magnetic properties of the manganese ores about two orders of magnitude higher than raw manganese ore at low roasting temperature. Thereby, we deduce that the weak magnetic separation combined with high magnetic separation could be adequate for roasted manganese ore to satisfy the requirement of electrolytic manganese industry. Application of biomass in manganese ore roasting process is promising to the effective use of biomass and for decreasing the consumption of fossil fuels in the manganese industry.

Magnetic Separation and Magnetic Properties of Low-Grade Manganese Carbonate Ore

JOM ◽  
2014 ◽  
Vol 67 (2) ◽  
pp. 361-368 ◽  
Author(s):  
Y. Wu ◽  
B. Shi ◽  
W. Ge ◽  
C. J. Yan ◽  
X. Yang
Keyword(s):  
Magnetic Properties ◽  
Magnetic Separation ◽  
Manganese Carbonate ◽  
Low Grade

Enrichment Of Low Grade Ferruginous Manganese Ore By Pilot Scale Wet High Intensity Magnetic Separation (WHIMS)

2021 ◽  
Vol 1 (1) ◽  
pp. 1-8
Author(s):  
Alok Tripathy ◽  
Ashok Ku Sahu ◽  
Veerendra Singh ◽  
S.K. Biswal
Keyword(s):  
Magnetic Separation ◽  
High Intensity ◽  
Pilot Scale ◽  
Low Grade ◽  
Manganese Ore

Preliminary Study on Leaching Mechanism of Manganese Using Ternary Compound Reductant

2013 ◽  
Vol 690-693 ◽  
pp. 3541-3544
Author(s):  
Wei Liu ◽  
Chuang Chen Song ◽  
Min Sun ◽  
Fu Zhe Zong ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Quantitative Analysis ◽  
Ternary Complex ◽  
Manganese Content ◽  
Low Grade ◽  
Manganese Ore ◽  
Manganese Ores ◽  
Preliminary Study ◽  
Manganese Slag ◽  
Leaching Mechanism

In this paper, the study of leaching mechanism from low-grade manganese ores by using ternary complex reductant of hydrogen peroxide, glucose and cellulose was discussed. Quantitative and qualitative analysis were conducted about original manganese and manganese slag by XRD and FTIR. XRD quantitative analysis showed that manganese content in manganese ore is about 11%; The FTIR spectra qualitatively analyzed that part broken of the C=C bond in the manganese samples leads to divalent manganese be released.

scholarly journals Hydrometallurgical Production of Electrolytic Manganese Dioxide (EMD) from Furnace Fines

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 712
Author(s):  
Mehmet Ali Recai Önal ◽  
Lopamudra Panda ◽  
Prasad Kopparthi ◽  
Veerendra Singh ◽  
Prakash Venkatesan ◽  
...  
Keyword(s):  
Manganese Dioxide ◽  
Manganese Oxides ◽  
Low Grade ◽  
Volatile Content ◽  
Smelting Reduction ◽  
Electrolytic Manganese Dioxide ◽  
Manganese Ores ◽  
Arc Furnaces ◽  
Electrolytic Manganese ◽  
Submerged Arc

The ferromanganese (FeMn) alloy is produced through the smelting-reduction of manganese ores in submerged arc furnaces. This process generates large amounts of furnace dust that is environmentally problematic for storage. Due to its fineness and high volatile content, this furnace dust cannot be recirculated through the process, either. Conventional MnO2 production requires the pre-reduction of low-grade ores at around 900 °C to convert the manganese oxides present in the ore into their respective acid-soluble forms; however, the furnace dust is a partly reduced by-product. In this study, a hydrometallurgical route is proposed to valorize the waste dust for the production of battery-grade MnO2. By using dextrin, a cheap organic reductant, the direct and complete dissolution of the manganese in the furnace dust is possible without any need for high-temperature pre-reduction. The leachate is then purified through pH adjustment followed by direct electrowinning for electrolytic manganese dioxide (EMD) production. An overall manganese recovery rate of >90% is achieved.

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