scholarly journals An overview on potential hydrometallurgical processes for separation and recovery of manganese

10.30544/560 ◽  
2020 ◽  
Author(s):  
Dr.Sanghamitra Pradhan ◽  
Ms.Muskan Ram ◽  
Prof.Sujata Mishra
Keyword(s):  
Supply And Demand ◽  
Resource Depletion ◽  
Consumer Products ◽  
Low Grade ◽  
Electrolytic Manganese Dioxide ◽  
Healthy Environment ◽  
Manganese Alloys ◽  
Electrolytic Manganese ◽  
Commercial Applications ◽  
Alloys And Compounds

With rapid economic progress worldwide, the search for new resources for materials has become a priority due to mineral resource depletion. Enhanced requirements for manganese alloys and compounds for several commercial applications created a desperate demand for manganese recovery technologies from primary as well as secondary resources. The future demand for manganese alloys and compounds is expected to increase. The growing need of electrolytic manganese dioxide (EMD) for different battery usage in automobile and energy sectors could create a gap in the supply and demand of manganese. There is an urgent necessity for eco-friendly and efficient technologies to boost the production of manganese from low-grade ores as well as post-consumer products. The framework of effective leaching processes and proper solvent extraction techniques for the recovery of manganese could be a novel pathway to get a clean, green and healthy environment for a sustainable future in the automotive and energy segment where this metal has a significant contribution.

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.

Electrolytic manganese dioxide from chloride electrolyte

1993 ◽  
Vol 34 (1) ◽  
pp. 119-133 ◽  
Author(s):  
J. Prabhakar Rethinaraj ◽  
S.C. Chockalingam ◽  
S. Kulandaisamy ◽  
S. Visvanathan
Keyword(s):  
Manganese Dioxide ◽  
Electrolytic Manganese Dioxide ◽  
Chloride Electrolyte ◽  
Electrolytic Manganese

Incorporation of Impurity Metal Ions in Electrolytic Manganese Dioxide

1994 ◽  
Vol 141 (8) ◽  
pp. 2035-2040 ◽  
Author(s):  
Hiroki Tamura ◽  
Kenji Ishizeki ◽  
Masaichi Nagayama ◽  
Ryusaburo Furuichi
Keyword(s):  
Metal Ions ◽  
Manganese Dioxide ◽  
Electrolytic Manganese Dioxide ◽  
Electrolytic Manganese ◽  
Impurity Metal

A Review of Desiccant Cooling Systems

1993 ◽  
Vol 115 (1) ◽  
pp. 1-8 ◽  
Author(s):  
D. G. Waugaman ◽  
A. Kini ◽  
C. F. Kettleborough
Keyword(s):  
Operating Costs ◽  
Coefficient Of Performance ◽  
Low Grade ◽  
Cooling Systems ◽  
The Past ◽  
Cooling Coils ◽  
Conventional Cooling ◽  
Commercial Applications ◽  
Conventional Systems ◽  
Made In

This paper describes recent published design advances that have been made in desiccant cooling systems. In desiccant cooling cycles, the desiccant reduces the humidity of the air by removing moisture from the air. Then the temperature is reduced by other components such as heat exchangers, evaporative coolers, or conventional cooling coils. The main advantage that desiccant cooling systems offer is the capability of using low-grade thermal energy. Desiccant cooling systems for residential and commercial applications are now being used to reduce energy-operating costs. However, the initial costs are comparatively high. The focus of research for the past decade has been to develop desiccant systems with a high coefficient of performance. Recent studies have emphasized computer modeling and hybrid systems that combine desiccant dehumidifiers with conventional systems.

ChemInform Abstract: SEM/EDX Analysis of Electrolytic Manganese Dioxide Deposits.

1986 ◽  
Vol 17 (3) ◽  
Author(s):  
K. MATSUKI ◽  
T. ENDO ◽  
H. KAMADA
Keyword(s):  
Manganese Dioxide ◽  
Electrolytic Manganese Dioxide ◽  
Edx Analysis ◽  
Electrolytic Manganese
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