A Green Enriching Process of Mn from Low Grade Ore of Manganese Carbonate

2014 ◽  
Vol 644-650 ◽  
pp. 5427-5430 ◽  
Author(s):  
Da Sun ◽  
Mao Lin Li ◽  
Can Hua Li ◽  
Rui Cui ◽  
Xia Yu Zheng
Keyword(s):  
Green Chemistry ◽  
Ball Milling ◽  
Ammonium Salt ◽  
Recovery Rate ◽  
Hot Water ◽  
Manganese Carbonate ◽  
Low Grade ◽  
Manganese Ore ◽  
Roasting Process ◽  
Mn Recovery

The ammonium salt roasting method is proposed to enrich and recover Mn from low grade ore of manganese carbonate. It included a process of mixing the ore with NH4Cl by ball milling, roasting this mixed ore in pipe stove at 450°Cfor one hour and leaching the calcine with hot water to obtain MnCl2solution. Further, manganese is precipitated by NH3·H2Oand CO2released from roasting process, washing and drying to get concentrated manganese ore. The NH4Cl obtained by vaporizing the filtrate solution can be reused for the ammonium salt roasting process. The result indicates that Mn recovery rate can be reached to be more than 90%. This method is considered to be a green chemistry process to enrich and recover Mn from low grade ore of manganese carbonate.

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.

Research status of microwave-assisted reduction technology of pyrolusite

2020 ◽  
Vol 07 ◽  
Author(s):  
Li Qiannan ◽  
Ling Yeqing ◽  
Zheng Hewen ◽  
Yang Zhi
Keyword(s):  
Metallurgical Industry ◽  
Raw Material ◽  
Utilization Efficiency ◽  
Low Grade ◽  
Manganese Ore ◽  
Effective Utilization ◽  
Research Status ◽  
Strategic Position ◽  
Research Intensity ◽  
Stable Development

: Manganese ore is an important metallurgical raw material that holds an important strategic position in the national economy of China. However, the grade of manganese ore in the country is mostly low, and the utilization efficiency of lowgrade manganese ore resources is low, which seriously restrict the healthy and stable development of China’s metallurgical industry. As a new green heating method, microwave is expected to address the problems of conventional methods and realize the effective utilization of low-grade manganese ore. In this paper, the research status of the microwave composite reduction of pyrolusite in recent years is reviewed. Microwave plays an important role in metallurgy, and it is the current direction pursued to improve the research intensity of microwave heating and extend it to actual industrial processes.

Sustainable Utilization of GCP Sludge as a Reductant in the Reduction Roasting of Low-Grade Manganese Ore to Recover Mn and Fe Values

2021 ◽  
Author(s):  
Malaya Kumar Jena ◽  
Subhabrata Mishra ◽  
Shaswat Kumar Das ◽  
Syed Mohammed Mustakim ◽  
Adeyemi Adesina
Keyword(s):  
Low Grade ◽  
Manganese Ore ◽  
Sustainable Utilization ◽  
Reduction Roasting

scholarly journals Influence of Microstructure on Beneficiation of Low-Grade Siliceous Manganese Ore from Orissa, India

2013 ◽  
Vol 01 (03) ◽  
pp. 80-84
Author(s):  
Patitapaban Mishra ◽  
Birendra Kumar Mohapatra ◽  
Pradeep Kumar Mallick ◽  
Khageswar Mahanta
Keyword(s):  
Low Grade ◽  
Manganese Ore

The Analysis and Application of Energy-Internet in the Low-Carbon Community

2010 ◽  
Author(s):  
Hao Liang ◽  
Weiding Long ◽  
Yingqian Song ◽  
Fang Liu
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Energy Use ◽  
Optimal Path ◽  
Energy Generation ◽  
Hot Water ◽  
Low Grade ◽  
Low Carbon ◽  
Urban District ◽  
Energy Internet

The energy-Internet is a new energy supply method based on urban compact and densely populated community in a low-carbon city. The principle is to connect small energy generation stations and combined heat and power system (CHP) based on distributed energy technology and renewable energy into a network in the urban district. In this way, the cooling, heating and electricity could all back each other up. Each building of the community could collect the energy and then put that energy into the energy-internet to supply the heating and power to buildings. The power in the energy-internet could also be used for charging electric vehicles. So the energy use in the urban community would be basically self-sufficient. The energy generation stations in the energy-internet could be solar power, wind power, biomass cogeneration (including refuse power generation), household fuel cell, low-grade heat in rivers, lakes, urban sewage and soil. In this way, large-scale renewable energy and unused energy could be fully used and applied in a compact and dense community. If the energy-internet is suitable designed, the equipment capacity, energy consumption and CO2 emission of the community could be greatly reduced, energy efficiency could be optimized and improved and the heat island effect could also be alleviated. This article explores three major problems of the construction of energy internet and their solutions: namely, the location and layout of the energy station, the environmental economic dispatch model of the energy internet with power dispatching as an example, the optimal path design of hot water pipe network combined with graph theory and genetic algorithms.

Enrichment of the manganese to iron ratio of ferruginous low-grade manganese ore using solid reductant

1998 ◽  
Vol 15 (3) ◽  
pp. 34-37 ◽  
Author(s):  
Y. V. Swamy ◽  
B. Bhoi ◽  
S. Prakash ◽  
H. S. Ray
Keyword(s):  
Low Grade ◽  
Manganese Ore

scholarly journals Simultaneous Selective Chlorination and Carbothermic Reduction of High-Iron Manganese Ore for the Recovery of Manganese Chloride and Metallic Iron

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1124
Author(s):  
Dawei Yu ◽  
Fuhui Cui ◽  
Yunxiang Cong ◽  
Chunxi Zhang ◽  
Qinghua Tian ◽  
...  
Keyword(s):  
Carbothermic Reduction ◽  
Reduction Rate ◽  
Water Soluble ◽  
Soluble Form ◽  
Low Grade ◽  
Manganese Ore ◽  
High Iron Content ◽  
Produce Water ◽  
High Iron ◽  
Iron Manganese

Metallurgical processing of low-grade manganese ore with high iron content is gaining increasing attention due to the gradual depletion of high-grade Mn ores, amid the difficulties in its efficient extraction for both Mn and Fe values in an environmentally-friendly manner. Attempting to tackle the difficulties, this paper describes an innovative process for selectively chlorinating and reducing the high-Fe manganese ore in a simultaneous manner, aiming to produce water-soluble MnCl2 and metallic Fe. After pre-mixing with carbonaceous reductant, CaCl2 and MgCl2 as the chlorinating agent, the Mn ore was heated at 1000 °C. As much as 89.4% Mn can be chlorinated in its water-soluble form, with dissolution of only 3.0% Fe. The presence of CaCl2 during carbothermic reduction resulted in significant promotion in both the Fe reduction rate and formation of large metallic Fe particles due to the segregation effect, facilitating subsequent separation. Selective Mn chlorination by MgCl2 took place with or without the involvement of SiO2, forming MgSiO4 or MgO, respectively.

Sign in / Sign up

Export Citation Format

Share Document