Effect of manganese ore blends on performance of submerged arc furnace for ferromanganese production

Tathavadkar, Vilas; Singh, Veerendra; Mishra, Prakhar; Mallick, P.; Nanda, B. D.

doi:10.1179/030192309x12506804200825

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…In recent years, studies of manganese ore direct alloying [1][2][3] have reached no consensus on the best process for the manganese ore reduction used in steel plants. Because manganese reduction is only carried out in laboratories or in preliminary tests of factory practice, current understanding of the necessary thermodynamic and kinetics conditions for manganese reduction is not sufficient.…”

Section: Introductionmentioning

confidence: 99%

Equilibrium kinetics of manganese-ore carbon-reduction between molten steel and slag

Dai

Wang

et al. 2017

Ironmaking & Steelmaking

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The equilibrium condition between molten steel and slag during manganese-ore carbon-reduction was studied using both resistance furnaces and induction furnaces. The resistance furnace experiment shows that it is difficult to further increase the yield of manganese (maintained at around 37%) without stirring. The bottom blowing and top slag stirring were strengthened in the induction furnace test, where white slag was continuously produced to promote the carbon reduction of manganese dioxide in slag between molten steel and slag. Under these conditions, the yield of manganese between molten steel and slag can reach greater than 90%. The main factors affecting the manganate capacity are the carbon and silicon content in molten steel. The limiting process of manganese mass transfer is mainly the mass transfer of manganese in molten steel. Under carbon reduction in molten steel the limiting factor affecting the mass transfer of manganese is the mass transfer of manganese in slag.

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Section: Introductionmentioning

confidence: 99%

Equilibrium kinetics of manganese-ore carbon-reduction between molten steel and slag

Dai

Wang

et al. 2017

Ironmaking & Steelmaking

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“…Similar studies were carried out by Sorensen et al 6 also using manganese ores from South Africa, Australia; CVRD and Gabon to establish that different origin ores have variation in chemistry and mineralogy which affect their smelting and reduction properties. Tathavadkar et al 7 carried out detail studies on Indian manganese ores to estimate the effect of variation in ore quality on performance of submerged arc furnace during ferromanganese production process.…”

Section: Introductionmentioning

confidence: 99%

“…Tathavadkar et al . 7 carried out detail studies on Indian manganese ores to estimate the effect of variation in ore quality on performance of submerged arc furnace during ferromanganese production process.…”

Section: Introductionmentioning

confidence: 99%

Smart ore blending methodology for ferromanganese production process

Singh

Biswas

Tripathy

et al. 2016

Ironmaking & Steelmaking

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This study is carried out to develop a smart ore blending methodology for high carbon ferromanganese production units. Geometallurgical characterisation of the ores collected from 10 different mines has been carried out to estimate variation in their aptness for the alloy production process. An evolutionary algorithm-based methodology has been adopted for ore blending to maximise the total manganese content of the ore blend under applied physicochemical constraints. Analysis provides various blends of the same chemical composition but of different geometallurgical ranks. An artificial neural network model has been developed to predict the operational parameters such as slag and metal composition. This method allows the operator to visualise the impact of combinations of different ore blends on slag-metal composition as well as on electric power and coke required for smelting reduction of ores in the submerged arc furnace. It was observed that best blends could reduce power and coke consumption by 100 kWh ton −1 and 30 kg ton −1 , respectively, but optimum values can be established in long run considering conservation of natural resources.

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“…The raw materials must secure good permeability for the gas to be distributed through the burden [10,11]. The harmful effect of Mn ore fines depend on their chemical composition, particle size, and the process itself, whether it is a production of FeMn or FeSiMn, open or closed type of furnace and the size of the furnace [12,13,14]. Fines in the raw materials are particularly detrimental, causing poor charge porosity, which will result in high power consumption per ton of alloy, excessive fume and dust losses, and low productivity.…”

Section: Introductionmentioning

confidence: 99%

ANALYSIS AND USE OF Mn ORE FINES

Semanova

Legemza

2014

Acta Metall Slovaca

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This article deals with the analysis and use of Mn ore fines in the production of ferroalloys. The paper focuses on the evaluation of Mn ores in terms of their chemical and phase composition. Mn ore fines are formed in the process of mining, transport and processing of Mn ores in factories. These small particles cannot be directly put into the furnace; they should be edit before they are used. The most appropriate treatment method of Mn ore fines is sintering. Laboratory experiments were done with Mn ore from Turkey, Bosnia and Herzegovina and Bulgaria. Analyses of the Mn ores were performed in order to determine their various properties, according to which conditions were adapted for laboratory experiments to produce the best quality Mn sinter. Chemical and phase composition and thermal analysis have been performed on the ores. The phase analysis showed that the ore from Turkey and Bulgaria are in the carbonate form and the ore from Bosnia and Herzegovina is in the oxide form. DTG analysis showed that, by the thermally heating the biggest weight loss happened in the Mn ore from Bulgaria. For the best quality ore can be considered the Mn ore from Turkey because it contains the highest % of Mn, lowest content of SiO 2 and the ore has the lowest % of P. The sizing of Mn ore fines was carried out in laboratory conditions on a laboratory sintering pan. Produced Mn sinters were subjected to analysis of their chemical and phase composition. Produced Mn sinters have higher content of Mn tot compared to Mn ores. As a result of Mn ore sintering the form of majority compounds changed-silicates, carbonates and hydrates of manganese in the starting Mn ores were in the produced Mn sinters analysed majority compounds based on the higher oxides of Mn and Fe, which is in the process for production of Mn ferroalloys positive.

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Effect of manganese ore blends on performance of submerged arc furnace for ferromanganese production

Cited by 7 publications

References 1 publication

Equilibrium kinetics of manganese-ore carbon-reduction between molten steel and slag

Equilibrium kinetics of manganese-ore carbon-reduction between molten steel and slag

Smart ore blending methodology for ferromanganese production process

ANALYSIS AND USE OF Mn ORE FINES

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