Electrochemical desorption of high-iron manganese ore

2018 ◽  
Vol 123 ◽  
pp. 27-34
Author(s):  
Zhuoyu Xie ◽  
Yongbing Huang ◽  
Yang Cao ◽  
Lili Lin ◽  
Min Huang
Keyword(s):  
Manganese Ore ◽  
High Iron ◽  
Iron Manganese

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.

scholarly journals Platinum mineralization comparative characteristics of the some Far East deposits

2018 ◽  
Vol 56 ◽  
pp. 04017
Author(s):  
Natalya Lavrik ◽  
Natalya Litvinova ◽  
Tatyana Aleksandrova ◽  
Valentina Stepanova ◽  
Alexandra Lavrik
Keyword(s):  
Far East ◽  
Manganese Ore ◽  
Gold Content ◽  
Alternative Source ◽  
Porphyry Deposit ◽  
Copper Porphyry ◽  
Native Silver ◽  
Iron Manganese ◽  
Platinum Mineralization

In this article shown platinum mineralization comparative characteristics for three deposits: Kondoer-traditional unique deposit and other two probably alternative source of platinum: the Poperechnoe ironmanganese deposit and the Malmyzh copper-porphyry deposit. Platinoids of the Kondoer deposit are the chain Pt>>Ir>Os>Ru=Rh>Pd. The presences of platinum crystals are characteristic, there are over 50 rare and new platinoids minerals in different combinations. There are gold and silver. Platinoids from the iron-manganese ore of Poperechnoe are as Pt>>Rh≈Ir>Ru≈Os>Pd. A scattered dissemination of arsenide sulfate and sulfides of Rh, Ir, Ru, Os are noted in the platinum. Palladium is present as impurities in gold and platinum. The gold content is different-with admixtures Ag, Pb, Cd, Fe. At this stage the platinoids content in oxidized ores of the Malmyzh gold-copper porphyry deposit is Pt ≈ Pd. The gold is present as electrum. There is native silver cadmium.

Microbial Community Analysis in Bio-Filter Bed of Iron and Manganese Removal Treating High Iron, Manganese and Ammonia Nitrogen Groundwater

2013 ◽  
Vol 777 ◽  
pp. 238-241 ◽  
Author(s):  
Xiao Rong Kang ◽  
Ya Li Liu
Keyword(s):  
Community Analysis ◽  
Ammonia Nitrogen ◽  
Microbial Community Analysis ◽  
High Iron ◽  
Manganese Removal ◽  
Microbial Analysis ◽  
Removal Efficiencies ◽  
Iron Manganese ◽  
Filter Bed ◽  
Iron And Manganese

The integrated process of spray aeration, falling water aeration and bio-filter bed was used for treating groundwater with high iron, manganese and ammonia nitrogen (NH4+-N). The removal efficiencies of iron, manganese and NH4+-N reached 99.1%, 95.0% and 85.2%, and corresponding effluent iron and manganese decreased to 0.1 and 0.05 mg/L. Microbial analysis results indicated that theβ-Proteobacteriawas predominant microorganisms, in whichGallionellaandLeptothrixwere main iron-removal bacteria and manganese-removal bacteria, respectively. Simultaneously,Pseudomona, belonged toγ-Proteobacteria, could absorb and oxidize free manganese to be manganese dioxide (MnO2) by extracellular oxidase.

Synthesis and Dephosphorization of Iron Manganese Composite Oxide by Acid Leaching on Iron Manganese Ore

2012 ◽  
Vol 554-556 ◽  
pp. 489-493 ◽  
Author(s):  
Ting Ting Kang ◽  
Yi Liu ◽  
Yong Bing Huang ◽  
Jing Dong ◽  
Qian Huang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Removal Rate ◽  
Sulfuric Acid Concentration ◽  
Acid Leaching ◽  
Manganese Ore ◽  
Composite Oxide ◽  
Iron Leaching ◽  
Solid Liquid ◽  
Iron Manganese

Fe-Mn composite oxide has been successfully synthesized using manganese ore in Guilin, Guangxi as an effective way to dephosphorize by acid leaching. Studied about the optimum conditions of acid leaching and the dephosphorization of Fe-Mn composite oxide. Process of the sulfuric acid concentration 2.1mol/L, solid-liquid ratio 1:4, reaction time 3.5h, the reaction temperature 90°C, the iron leaching rate of 66% while manganese 93%. Adsorption of phosphorus experiments showed that at oxide dosage 0.1000g, the reaction temperature 20°C, the reaction time 60min, pH 3.0, the phosphorus mass concentration 500ug/L in water sample, the phosphorus removal rate was up to 98.65%, compared to 70% removal rate of 0.5000g natural ore. The comparison of adsorption isotherms between Fe-Mn composite oxide and natural ore showed that in above conditions, the oxide's saturation adsorption quantity was 5.0000mg/g, improved 36.99 times.

scholarly journals Definition of conditions of selective iron reduction from iron-manganese ore

2021 ◽  
Vol 63 (11-12) ◽  
pp. 952-959
Author(s):  
N. Kosdauletov ◽  
V. E. Roshchin
Keyword(s):  
Carbon Monoxide ◽  
Solid Phase ◽  
Metallic State ◽  
Manganese Ore ◽  
Solid Carbon ◽  
Reduction Roasting ◽  
Magnetic Part ◽  
Phase Reduction ◽  
Reduction Of Iron ◽  
Iron Manganese

The article presents thermodynamic modeling results of reduction roasting of ferromanganese ore with a high phosphorus content in the presence of solid carbon. The modeling was carried out using TERRA software package. Influence of the process temperature in the range 950 – 1300 K and carbon content in the amount of 8.50 – 8.85 g per 100 g of ore on reduction of iron, manganese and phosphorus was investigated. With these parameters of the system, iron is reduced by both solid carbon and carbon monoxide CO to the metallic state, and manganese is reduced only to MnO oxide. The degree of phosphorus reduction depends on the amount of reducing agent. With an excess of carbon relative to the reduction of iron, all phosphorus is converted into metal at a temperature of 1150 K. Phosphorus is not reduced at temperatures below 1150 K and such amount of carbon. The process of solid-phase reduction of iron from manganese ore with the preservation of manganese in the oxide phase was researched in laboratory conditions. Experimental results of direct reduction of these elements with carbon and indirect reduction with carbon monoxide CO are presented. The experiments were carried out in the laboratory Tamman furnace at a temperature of 1000 – 1300 °C and holding time of 1 and 3 hours. Results of the research of phase composition of the reduction products, as well as chemical composition of the phases are considered. The possibility of selective solid-phase reduction of iron with solid carbon to the metallic state was confirmed. Iron in the studied conditions is reduced by carbon monoxide CO and passes into magnetic part. During the magnetic separation of the products of ore reduction roasting with solid carbon and carbon monoxide CO, the non-magnetic part contains oxides of manganese, silicon and calcium. The work results can be used in development of theoretical and technological foundations for the processing of ferromanganese ores, which are not processed by existing technologies.

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