study on reduction of solid fuel rate in iron ore sintering

Study the effect of catalyst (THERMACT-BF) on reduction ...

2021-3-19 · Sampling of hard coke and iron ore was done as per the procedure prescribed in IS:436(Part-II) and crushed in 200 Mesh. The coke and THERMACT-BF ratio was maintained 1:6000 . The sample of iron ore for TGA and for reduction studies was prepared in 73:27 ratio for Iron Ore Coke and THERMACT-BF was added in the ratio of 1:6000 of coke.Effects of Iron Ores on the Combustion Behavior of Coke ...during sintering process. In present study, effects of iron ore coating layers on coke combustion rate and NOx emission were investigated in a visualize combustion equipment, and an optimized ore blending structure was proposed by sinter pot test. Due to the melting of iron ore coating layers at high tempera-

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The Direct Reduction of Iron Ore with Hydrogen

The steel industry represents about 7% of the world''s anthropogenic CO2 emissions due to the high use of fossil fuels. The CO2-lean direct reduction of iron ore with hydrogen is considered to offer a high potential to reduce CO2 emissions, and this direct reduction of Fe2O3 powder is investigated in this research. The H2 reduction reaction kinetics and fluidization characteristics …Paper on Coke Breeze Reduction by ... - Sesa Goa Iron OreINDUSTRY MARVEL – INNOVATION OF WASTE TO WEALTH Selective utilization of waste to reduce fuel consumption Authors: NITESH Kr. NIRALA (AGM – Operation, Vedanta –Sesa Iron Ore Business), SANJEEV TIWARI (AM – Operation, Vedanta –Sesa Iron Ore Business), DHIRAJ AGARWAL (AM-Operation, Vedanta-Sesa Iron Ore Business) Abstract: The coke breeze is …

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Energies | Free Full-Text | Effects of Fuel Type and ...

A transient two-dimensional mathematical model is developed to study the influence of fuel type and operation parameters on combustion and NOx emission during the iron ore sintering process. The model was validated by comparing the model predictions with sintering pot test data. The predictions show reasonable agreement with the averaged values of the test data.Technologies for Improvement in Sintering Process – …2013-8-6 · Technologies for Improvement in Sintering Process. The sintering process is used to agglomerate a mix of iron ore fines, return fines, fluxes, and coke breeze, with a particle size of less than 10 mm, so that the resulting sinter, with a screened size of 5 mm to 30 mm, can withstand the pressure and the temperature conditions in the blast ...

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Effects of Processing Parameters on Fuel NO x in the ...

The emission concentration of fuel NOx mainly depends on the formation and reduction of NOx in sintering process. Therefore, in the sintering process, the formation of NOx can be inhibited or the reduction can be prompted by controlling the sintering temperature, increasing the heating rate, prolonging the high temperature time or decreasing the sintering oxygen content.Mathematical Model Study of the Process Kinetics during ...2021-6-25 · The roasting of iron ore pellets is accompanied by a set of physicochemical processes, including the oxidation of magnetite, the dissociation and reduction of hematite, the decomposition of carbonates, solid- and liquid-phase sintering, the formation of new chemical compounds, and so on [1–6].

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Optimization of gaseous fuel injection for saving energy ...

2017-12-1 · Raw materials, as listed in Table 1, contain iron ore fines, solid fuel, return fine and hydrated lime (95% purity).The basic analysis of the solid fuels for sintering tests is shown in Table 2.The available gaseous fuels in iron and steel production process are usually natural gas, coke oven gas and blast furnace gas.Ore Sintering - an overview | ScienceDirect Topics · Iron ore sintering is a material preparation process employed worldwide in the production of iron and steel. According to statistical data on pollution, sintering plants rank second in terms of toxic emissions, after the incineration of municipal solid waste (Menad et al., 2006; Remus et al., 2013 ). Of the eight CORINAIR (Core Inventory of Air ...

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Thermodynamic controls on rates of iron oxide reduction …

2022-1-18 · Under anoxic conditions, various microorganisms couple the oxidation of organic carbon to the reduction of solid ferric iron oxide phases using extracellular electron shuttles (EES). Determining the contribution of this widespread terminal electron accepting process to total anaerobic respiration has proven challenging because of large variations in observed ferric …Recycling of Blast Furnace Dust in the Iron Ore Sintering .. a study on the reduction of ZnO by CO at high temperature 31) the process conditions deviated considerably from the conditions in the sintering process. In an atmosphere of 80% CO 2 and 20% CO it was shown that for ZnO contained in iron ore pellets the reduction reaction in the temperature range of 950°C to 1100°C is controlled by the ...

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Making more Efficient Use of Solid Fuel in Two-Layer …

2014-10-9 · Results are presented from laboratory studies of the sintering of a two-layer charge in which the solid fuel is separated into different fractions. It was established that a reduction in the top layer''s content of the –0.5-mm fraction from 45% to zero is accompanied by a decrease in the unit productivity of the sintering machine and increases in the output of sinter and its strength ...Effect of Fuel Characteristics on the Thermal Processes in ...2008-7-23 · Iron Ore Sintering Bed Won YANG ∗, Kwangheok YANG∗ and Sangmin CHOI∗ Recently, coke in an iron ore sintering process is replaced in part by powdered anthracite; less expensive fuel. In this study, influence of the different fuel characteristics on the thermal condition in the sintering bed has been investigated using a mathematical model.

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Partial substitution of anthracite for coke breeze in iron ...

2021-1-15 · In the sintering of iron ores, the partial substitution of anthracite for coke breeze has been considered to be an effective way of reducing pollutant emissions and production cost. In …Study on Double-Layer Ignition Sintering Process Based on ...2021-12-25 · An efficient sintering process was proposed based on the autocatalytic denitrification of the sintered ore. The catalytic denitrification of sintered ore, the effect of double-layer ignition sintering process on the emission reduction in nitrogen oxides, and the impact on the quality of sintered ore were studied. The results showed that the catalyzed reduction of NO with sinter …

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The study of sunflower seed husks as a fuel in the iron ...

2008-1-1 · Fuel combustion efficiency during iron ore sintering using only metallurgical coke breeze, 5%, 10% and 20% sunflower husk substitution in the sintering pot. The level of return fines produced is considered to be the most direct indicator of sinter quality and also reflects the strength index of produced sinter ( Ball et al., 1973 ).Analyzing cleaner alternatives of solid and gaseous fuels ...2018-10-10 · The replacement ratio varies depending on the biomass and fuel gas used. Therefore the aim of the replacement analysis was to see if the fuel rate was compatible with maintaining the heat requirement for the sintering temperature. 3.2. Cases analysis3.2.1. Replacement of solid fuel by coke oven and blast furnace gas

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CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

2012-8-16 · FUNDAMENTALS OF IRON ORE SINTERING R. P. Bhagat ... Heat is generated by combustion of a solid fuel ad mixed with the bed of fines being agglomerated. The combustion is initiated by igniting the fuel ... The specific volume of air for sintering is almost constant, so the sintering rate will depend on how fast the air is blowing in. This .. on Ore Sinter - an overview | ScienceDirect TopicsIron ore sinter typically constitutes more than 60% of the blast furnace ferrous burden in modern blast furnaces in East Asia. Granulation and thermal densification are two important steps in iron ore sintering and determine the quality of the resultant sinter and …

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Review on alternative fuel application in iron ore sintering

The technology of fuel gas utilization on the iron ore sintering process has been proposed as an alternative for reducing the environmental load and improvements on the sinter quality have been ...(PDF) STUDY ON REDUCTION KINETICS OF IRON ORE …Study on Reduction Kinetics of Iron Ore Sinter Using Coke Dust 21. [email protected] prc . Analysis of Coke Dust. Coke du st co llected from the co ke oven by product plant (COBP) of the ...

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Recycling of Blast Furnace Dust in the Iron Ore Sintering ...

In a study on the reduction of ZnO by CO at high temperature 31) the process conditions deviated considerably from the conditions in the sintering process. In an atmosphere of 80% CO 2 and 20% CO it was shown that for ZnO contained in iron ore pellets the reduction reaction in the temperature range of 950°C to 1100°C is controlled by the ...GREEN STEEL THROUGH HYDROGEN DIRECT REDUCTION2021-8-18 · A STUDY ON THE ROLE OF HYDROGEN IN THE INDIAN IRON AND STEEL SECTOR 1 Currently, over 90% of iron production is through the blast furnace route, with direct reduction making up a growing share since its commercialisation in the 1970s. Since the year 2000 direct reduced iron (DRI) production has increased by 250%, illustrating the rapid growth of

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Effects of Iron Ores on the Combustion Behavior of Coke ...

during sintering process. In present study, effects of iron ore coating layers on coke combustion rate and NOx emission were investigated in a visualize combustion equipment, and an optimized ore blending structure was proposed by sinter pot test. Due to the melting of iron ore coating layers at high tempera-Kinetic Studies of Iron Ore–Coal Composite Pellet ...2011-12-1 · An attempt has been made to study the effect of coal quality on the reduction kinetics of iron ore–coal composite pellets under non-isothermal condition in inert atmosphere. During non-isothermal reduction of composite pellets, it is observed that (i) reduction rate of iron oxide increases with increasing temperature, (ii) reduction rate increases with increase in porosity of …

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Mathematical modeling of thermal behavior of single iron ...

2021-2-8 · In this study, a one-dimensional generic model capable of being integrated with reactor scale models is proposed for a single pellet through solving the transient differential conservation equations. Predicted results comparison with the experimental data showed close agreement. In addition, the model was used to investigate the relevance of physical characteristics of pellet, …Experimental Study on Oxygen-Enriched Sintering of ...2018-11-22 · The influences of various factors, such as oxygen enrichment time, oxygen enrichment load, and ignition temperature, on the technical indices and sintering performance in the vanadium-titanium magnetite sintering process are simulated using sinter pot experiments. The experiments are based on the field production parameters of a sintering trolley in a steel …

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Reduction of Iron Ore Pellets, Sinter, and Lump Ore under ...

2020-3-23 · Reduction degrees as a function of time in all studied temperatures (700, 800, 900, and 1000 °C) for iron ore pellets, sinter, and lump ore are shown in Figure 3. It is shown that the lump ore has the slowest reduction rate at each studied temperature.Reduction Characteristics of High Phosphorus Iron Ore in ...2019-9-18 · The isothermal reduction curves of high phosphorus iron ore briquettes reduced under different operation conditions of reduction temperatures and gas composition simulating different zones of iron blast furnace are given in Figure 2. For each single reduction curve, the rate of reduction was highest at the early stages and decreased as ...

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Reduction of Iron Oxides with Hydrogen—A Review ...

In general, the reduction of Fe 2 O 3, called hematite, does not occur directly to metallic iron, Fe.If the reduction temperature is lower than 570 °C, reduction to Fe occurs stepwise from Fe 2 O 3 to Fe 3 O 4, called magnetite, and continues to …Thermodynamic Analysis of Iron Ore Sintering Process …The sinter process of iron ore with biomass carbon instead of coke breeze as fuel was investigated via thermodynamic analysis in this paper through a comparison of sinter composition indexes, metallurgical properties, and pollutant emissions. Straw charcoal was used in this paper, and its replacement does not adversely affect the composition index of iron ore, namely Fe, …

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Study on applicability of biomass in iron ore sintering ...

Downloadable (with restrictions)! India as a developing economic power, has to rely much on its energy sector for growth and development. The growth is largely interlinked with the availability of energy and its judicious utilization. Also involved is the question whether the available energy is environmentally acceptable and technically viable.2021-9-24 · Wang Y Z, Liu Z J, Zhang J L, et al. Study of stand-support sintering to achieve high oxygen potential in iron ore sintering to enhance productivity and reduce CO content in exhaust gas. J Clean Prod, 2020, 252: 119855 doi: 10.1016/j.jclepro.2019.119855 [4]

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Effect of Fuel Characteristics on the Thermal Processes in ...

2008-7-23 · Iron Ore Sintering Bed Won YANG ∗, Kwangheok YANG∗ and Sangmin CHOI∗ Recently, coke in an iron ore sintering process is replaced in part by powdered anthracite; less expensive fuel. In this study, influence of the different fuel characteristics on the thermal condition in the sintering bed has been investigated using a mathematical model.Reduction of NO x emission based on optimized …2020-3-4 · Reducing NO x emission of iron ore sintering process in a cost effective manner is a challenge for the iron and steel industry at present. Effects of the proportion of mill scale and coke breeze on the NO x emission, strength of sinter, and sinter indexes were studied by combustion and sinter pot tests. Results showed that the peak value of NO concentration, total of NO …

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The Direct Reduction of Iron Ore with Hydrogen

The steel industry represents about 7% of the world''s anthropogenic CO2 emissions due to the high use of fossil fuels. The CO2-lean direct reduction of iron ore with hydrogen is considered to offer a high potential to reduce CO2 emissions, and this direct reduction of Fe2O3 powder is investigated in this research. The H2 reduction reaction kinetics and fluidization characteristics …Influence of Surface Modification on Combustion ...1) Iron ore sintering process gener-ally accounts for about 10% of the total energy consumption of iron & steel enterprises, 75%–80% of which is con-sumed in the form of solid fossil fuels like coke breeze or anthracite.2,3) However, previous research has found that the combustion of solid fossil fuels served as the main source of CO

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Study on Double-Layer Ignition Sintering Process Based on ...

2021-12-25 · An efficient sintering process was proposed based on the autocatalytic denitrification of the sintered ore. The catalytic denitrification of sintered ore, the effect of double-layer ignition sintering process on the emission reduction in nitrogen oxides, and the impact on the quality of sintered ore were studied. The results showed that the catalyzed reduction of NO with sinter …Displacement of the Ingnition Furnace in the Iron Ore .. search of new technologies for the iron ore sintering process, the re-circulation of waste gases in the process can provide some advantages in relation to the conventional process. For such study, a sintering multi-phase model was used for the assessment of the re-circulation of waste gases in the process. Five cases of re-circulation of waste gases in the sintering process were …

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Reduction Characteristics of High Phosphorus Iron Ore in ...

2019-9-18 · The isothermal reduction curves of high phosphorus iron ore briquettes reduced under different operation conditions of reduction temperatures and gas composition simulating different zones of iron blast furnace are given in Figure 2. For each single reduction curve, the rate of reduction was highest at the early stages and decreased as .. bustion Kinetics Characteristics of Solid Fuel in the .. order to systematically elucidate the combustion performance of fuel during sintering, this paper explores the influence of three factors, namely coal substitution for coke, quasi-particle structure and the coupling effect with reduction and oxidation of iron oxide, on fuel combustion characteristics, and carries out the kinetic calculation of monomer blended fuel (MBF) and …

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Reduction of Iron Ore Pellets, Sinter, and Lump Ore …

2020-1-30 · Reduction degrees as a function of time in all studied temper-atures (700, 800, 900, and 1000 C) for iron ore pellets, sinter, and lump ore are shown in Figure 3. It is shown that the lump ore has the slowest reduction rate at each studied temperature. Pellets were the fastest to reduce in 700 C, but already at 800 C,Kinetics of Direct Iron Ore Reduction with CO-H2 Gas …2019-7-1 · Kinetics of Direct Iron Ore Reduction with CO-H 2 Gas Mixtures ... rate constant (Kr). The results from the study showed that the reduction process is both diffusion and interfacial reaction controlled. That is the initial stage of the reduction process is ... considering the reduction of wustite to iron. III. solid product layer.

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Modified coke breeze distribution in iron ore sintering ...

2021-2-9 · solid fuel in iron ore sintering. Reduction in consumption of primary fuel (coke breeze) without compromising on plant productivity and sinter quality would help in the operational cost reduction as well as in achieving the compliance of regulation related to hazardous emissions from sinter plants. Due to theResearch on the Preparation of Sinter for COREX …2022-2-6 · Sinter has been introduced into the composite burden of the COREX ironmaking process in China to lower the material cost, but the proportion is limited due to its poor low-temperature reduction degradation performance in the shaft furnace. This work dealt with the preparation of sinter for the COREX process by varying the MgO content and basicity.

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(PDF) Reduction of Solid Fuel Consumption in Sintering of ...

2022-2-12 · STUDY ON REDUCTION KINETICS OF IRON ORE SINTER USING COKE DUST ... The coke breeze is the common solid fuel for iron sintering plants. The high consumption of coke breeze leads to its depletion as ...(PDF) Study on Sintering and Reduction of Ultra-Fines Iron …Study on Sintering and Reduction of Ultra-Fines Iron Ore. ... The influence of biomass fuel rate in the range 0– on the sinter quality is evaluated and compared to the conventional sinter ...

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