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The separation of manganese and iron from a manganiferous iron ore using horse dung (biomass) as reductant was investigated in a sulfuric acid solution, and 99.80% Mn and 17.76% Fe were extracted … Expand
In this study, a process to separate manganese and iron from manganiferous iron ores by reductive acid leaching followed by magnetic separation was conceived and …
The magnetohydrodynamic separation technology is relatively mature with its long research history, which began in the early twentieth century. It is employed to separate precious metals and insulating materials and has obtained great achievements in the separation of coal, zircon, cassiterite, iron ore, manganese ore, and potash salt.
Abstract Experiments confirm that selective solid-phase reduction of iron and phosphorus in ferromanganese ore is possible. A laboratory Tamman furnace at 1000°C is used, with holding for 2 and 5 h. The phase composition and phase ratio of the reduction products are investigated, as well as their chemical composition. Reductive annealing in an atmosphere of …
Introduction: In gravity separation, the shaking tables (gravimetric tables, shaker tables) are the most widely used and efficient sorting equipment for fine ore separation. The shaking table beneficiation is not just applied as an independent beneficiation method. Still, it is often combined with equipment such as jig separators, centrifugal concentrators, spiral classifiers, spiral …
In the present investigation, magnetic separation studies using an induced roll magnetic separator were conducted to beneficiate low-grade ferruginous manganese ore. The feed ore was assayed to contain 22.4% Mn and 35.9% SiO2, with a manganese-to-iron mass ratio (Mn:Fe ratio) of 1.6. This ore was characterized in detail using different techniques, …
Introduction. Iron and manganese are important alloy metals that are widely used. Of these, 90% of manganese ore resources are used in the iron and steel industry in the form of manganese ferroalloy and electrolytic metal manganese products, and the remaining 10% of manganese ore resources are used in fertilizers, feeds, and the chemical and other industries …
894 Journal of Chemical Engineering of Japan 2. Results and Discussion 2.1 Leaching chemistry The reductive leaching of high-iron content manganese oxide ore using flue gas is a complex system ...
In this paper, the effects of high-manganese iron ore on the direct reduction process of high-iron red mud were investigated through various tests such as reduction temperature, reduction time, C ...
These iron particles could not be separated by magnetic separator at the plant mainly due to higher feed rate and unoptimized operating conditions for manganese ore separation. Lab-scale studies were carried out by crushing all the >3 mm fraction in the products and these were processed using a magnetic separator at different operating conditions.
Introduction. Ferruginous manganese ore deposits, typically with 15–35 wt% Mn, or with low Mn:Fe ratios (e.g. Mn/Fe of ∼0.5–2), are problematic for manganese alloy makers and thus manganese ore miners (Kivinen et al. …
Upgradation techniques like wet sieving and magnetic separation were used to evaluate the beneficiation potential of manganese ore. During wet sieving, manganese content in raw ore was upgraded ...
The target mineral of the Chongqing Chengkou manganese ore sample is carbonate manganese ore (rhombic manganese ore), the content of which is up to 82.9% in manganese minerals, and a small amount of silicate …
The separation of manganese and iron from a manganiferous iron ore using horse dung (biomass) as reductant was investigated in a sulfuric acid solution, and 99.80% Mn …
The utilization of low-grade manganese ores has become necessary due to the intensive mining of high-grade ores for a long time. In this study, calcined ferruginous low-grade manganese ore was selectively reduced by CO, which converted hematite to magnetite, while manganese oxide was reduced to MnO. The iron-rich component was then separated by …
In the oxide type manganese ore, the manganese is often present in the insoluble form of Mn 4+ and iron often exists in the state of Fe 3+. In order to obtain soluble Mn 2+, Mn 4+ must be converted into Mn 2+, therefore, reductants are applied to reduce Mn 4+ into Mn 2+ …
Table 1 demonstrated that the total iron content in the ore was 47.96%, total manganese content 15.8%, and divalent manganese content 0.92%. In addition, the contents …
The separation of iron, manganese and zinc using Alamine 336 in xylene from hydrochloric leaching solutions of manganese nodules containing cobalt and nickel has been reported by Ahn et al. ... (2000) studied oxidation and recovery of manganese in the leaching solution from a manganese ore using chloric salt (NaClO 3) as the oxidant for Mn ...
In the present investigation, magnetic separation studies using an induced roll magnetic separator were conducted to beneficiate low-grade ferruginous manganese ore. The feed ore was assayed to contain 22.4% Mn and 35.9% SiO2, with a manganese-to-iron mass ratio (Mn:Fe ratio) of 1.6. This ore was characterized in detail using different techniques, …
This paper presents a review of the various technical principles, parameter optimization and mechanism characteristics associated with the extraction and separation of iron and manganese from ferromanganese. This review offers guidance for the selection and development of ferromanganese or other complex refractory iron and manganese ore …
The relation between the magnetic separation behavior and magnetic properties of a low-grade manganese ore was analyzed before and after treatment by direct reduction with coal. It was found that raw ore with an initial average grade of 10.39% Mn and consisting of diamagnetic and paramagnetic minerals can be concentrated by high-intensity magnetic …
Manganese (Mn) extraction from iron-rich pyrolusite ore with cheap sulphur dioxide is considered to be the most promising method with advantages of rapid leaching rate …
Manganese (Mn) extraction from iron-rich pyrolusite ore with cheap sulphur dioxide is considered to be the most promising method with advantages of rapid leaching rate and high leaching efficiency. Nevertheless, co-dissolution of iron (Fe) with manganese has limited the development of its commercial practice. In this work, the separation kinetics and mechanism …
It can be seen from Table 1 that the ore was mainly composed of iron and manganese with contents of 43.53% and 11.4% respectively, the main component of gangue mineral SiO 2 with contents of 11.81%, and the harmful elements phosphorus and sulfur with contents of 0.02% and 0.04% respectively. In order to further understand the mineral …
The synergistic direct reduction of high-manganese iron ore and high-iron red mud to enhance the direct reduction of red mud was studied.. Comparing with the direct reduction of high-iron red mud, the metallization rate increase form 84.07% to 93.52% by adding with 60% of the high-manganese iron ore roasting at 1150 °C, 150 min and C/Fe mass ratio of 2.0.
The schematic diagram of the industrial separation of Mn and Fe from Fe-Mn ores by magnetic reduction roasting-magnetic separation is illustrated in Fig. 1 (a). Fe-Mn ores were firstly crushed and then reduced under reduction atmosphere in a rotary kiln, and the reduction situation of Fe-Mn ore inside the rotary kiln is drawn in Fig. 1 (b). After magnetic reduction …
Introduction. Ferruginous manganese ore deposits, typically with 15–35 wt% Mn, or with low Mn:Fe ratios (e.g. Mn/Fe of ∼0.5–2), are problematic for manganese alloy makers and thus manganese ore miners (Kivinen et al. Citation 2010).Olsen et al. (Citation 2007) state that the production of standard ferromanganese alloy with 78% Mn requires raw materials with a …
Sodium salts were used in the reduction roasting and magnetic separation process to separate and recover iron and manganese from the high-iron manganese oxide ores to uttermost utilize the complex ...
Applications include heavy minerals, ilmenite, manganese and iron ore (haematite) beneficiation; PGM upgrading as well as manganese recovery from slimes dams. This offers new approaches and technology for solving para-magnetic minerals separation processes that are as efficient as they are cost-effective.
Manganese is considered a relatively rare metal as concentrations of it in ore of commercial importance are geographically limited. In nature, manganese is found in the form of oxides, carbonates, and silicates. Manganese ores are complex in the sense that they not only consist of a complex oxide mineral assemblage but these minerals are also very finely inter …
