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

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

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.

Modeling and kinetics study of microwave heat drying of low grade manganese ore

2020 ◽  
Vol 31 (7) ◽  
pp. 2901-2911 ◽  
Author(s):  
Jinjia Du ◽  
Lei Gao ◽  
Yong Yang ◽  
Shenghui Guo ◽  
Jin Chen ◽  
...  
Keyword(s):  
Low Grade ◽  
Manganese Ore ◽  
Kinetics Study ◽  
Microwave Heat

Isolation, Identification and Screening of Manganese Solubilizing Fungi From Low-Grade Manganese Ore Deposits

2016 ◽  
Vol 34 (4) ◽  
pp. 309-316 ◽  
Author(s):  
S. Mohanty ◽  
S. Ghosh ◽  
S. Nayak ◽  
A. P. Das
Keyword(s):  
Ore Deposits ◽  
Low Grade ◽  
Manganese Ore

Reduction-Roast Leaching of Low-Grade Pyrolusite Using Bagasse as a Reducing Agent

2013 ◽  
Vol 699 ◽  
pp. 28-33 ◽  
Author(s):  
Yun Fei Long ◽  
Jing Su ◽  
Xian Jia Ye ◽  
Hai Feng Su ◽  
Yan Xuan Wen
Keyword(s):  
Sulfuric Acid ◽  
Acid Concentration ◽  
Sulfuric Acid Concentration ◽  
Weight Ratio ◽  
Reducing Agent ◽  
Manganese Sulfate ◽  
Low Grade ◽  
Manganese Ore ◽  
Optimal Conditions ◽  
Roasting Temperature

Bagasse, a fibrous residue from sugarcane juice extraction, was used as a reducing agent to roast low-grade pyrolusite in N2. The roasted ore was further leached using sulfuric acid, to convert manganese oxide in the ore to manganese sulfate. The effects of weight ratio of bagasse to manganese ore, roasting temperature, roasting time, leaching temperature, leaching time, stirring speed and sulfuric acid concentration on the leaching recovery of manganese were investigated. Optimal conditions were determined to be a bagasse to manganese ore weight ratio of 0.8:10, roasting temperature of 500°C for 40 min, leaching stirring speed of 100 rpm, sulfuric acid concentration of 3 mol•L-1 and leaching temperature of 50°C for 40 min. The leaching recovery rate of manganese was up to 97.8% at the optimal conditions.

A process for beneficiation of low-grade manganese ore and synchronous preparation of calcium sulfate whiskers during hydrochloric acid regeneration

2021 ◽  
Vol 199 ◽  
pp. 105533
Author(s):  
Mengen Lei ◽  
Baozhong Ma ◽  
Dongya Lv ◽  
Chengyan Wang ◽  
Edouard Asselin ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Calcium Sulfate ◽  
Low Grade ◽  
Manganese Ore ◽  
Calcium Sulfate Whiskers
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