Flame front progress in gas assisted iron ore sintering
Optimization of gaseous fuel injection for saving energy consumption and improving imbalance of heat distribution in iron ore sintering. Appl. Energy, 207 (2017), pp. 230-242. View PDF View article View in Scopus Google Scholar [38] C.E. Loo, J.C.M. Leaney. Characterizing the contribution of the high-temperature zone to iron ore sinter bed ...
Combustion behavior of granulated coke breeze in iron ore sintering
The raw materials for iron ore sintering, including iron ore, return fine (−5 mm sinter), fluxes (limestone, dolomite, quicklime) and coke breeze, were taken from a sintering plant of Baosteel, China. The chemical compositions and size distributions of iron ore, return fine and fluxes are shown in Table 1.
Model of an iron ore sinter plant with selective waste gas
Optimization of gaseous fuel injection for saving energy consumption and improving imbalance of heat distribution in iron ore sintering. Applied Energy, 207 (2017), pp. 230-242, 10.1016/j.apenergy.2017.06.024. View PDF View article View in Scopus Google Scholar [24]
Treatment of steel rolling sludge incineration slag via iron ore
Steel rolling sludge, an oil-containing waste generated during steel production, was difficult to manage. Prolonged storage poses significant environmental and health hazards. Most steel enterprises in China use steel rolling sludge directly as a raw material for sintering. However, its adhesive nature caused poor mixing with other materials, affecting the quality of the sinter. …
Modified coke breeze distribution in iron ore sintering
consumption in iron ore sintering by reducing the coke ratio from top to bottom without deteriorating the sinter property. ... heat distribution in a sintering bed and improve energy efficiency. First, the theoretical analysis was done for the …
Numerical simulation of fuel layered distribution iron ore sintering
Iron ore sintering is a thermal agglomeration process by mixing iron ore fines, recycled products, fluxes, slag-forming agents, and solid fuel (coke) and manufacturing sinter product with suitable thermal and mechanical properties [].The process is complex and involves various phenomena such as momentum, heat and mass transfer coupled with chemical …
Optimization of gaseous fuel injection for saving energy consumption …
DOI: 10.1016/J.APENERGY.2017.06.024 Corpus ID: 116446902; Optimization of gaseous fuel injection for saving energy consumption and improving imbalance of heat distribution in iron ore sintering
Chapter Advances in Sintering of Iron Ores and …
Chapter "Sintering of iron ores and concentrates" is focusing on the study of theoretical, thermodynamic and experimental results in the production of sinters from iron ores and …
Numerical Simulation of Heat and Mass Transfer …
Iron ore sintering refers to the process of mixing iron ore, fuel, flux, and iron-containing waste produced in the ironmaking and steelmaking process in a certain proportion, and then the fuel is burned through ignition to release heat.
New approach to improve heat energy utilization efficiency in iron ore …
In contrast to the conventional iron ore sintering process, the temperature evolution in the sintering bed using the fuel segregation distribution sintering technology tended to be more reasonable ...
Recent progress in sustainable and energy-efficient …
Conventionally, coke breeze is the main heat supplier in the iron ore sintering process. The use of renewable alternative fuels that are carbon neutral or recyclable is an …
HEAT TRANSFER DURING THE SINTERING PROCESS OF …
Sintering is a widely used method to agglomerate iron-containing fine-grained materials. In sintering the ore fines, concentrates, fluxes, and coke breeze are thoroughly weighed, …
Iron ore sintering
Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm particle size, which possess the physical and metallurgical characteristics and gas permeability required for efficient blast furnace operation.As shown in Figure 14.1, iron ore sintering is carried out in three …
Intelligent Optimization and Impact Analysis of Energy …
To address these, this paper proposes a multi-objective optimization method integrated with the NSGA-III algorithm and establishes an integrated system optimization …
Comprehensive evaluation of hydrogen-rich energy application in iron
The research aims to achieved a lower solid fuel consumption and CO 2 emissions in iron ore sintering through optimizing the injection mode. The main findings are: The various concentration segmented injection mode can achieve better sintering indexes compared with the equal concentration injection mode because the heat generated by gas ...
Energy Consumption and CO2 Emissions in Ironmaking and …
The solid charge consists of iron ore as sinter, pellets or lumps, mainly consisting of hematite (Fe 2 O 3) or magnetite (Fe 3 O 4), coke, and limestone as a flux. Preheated air is blown through tuyeres near the bottom to burn the coke, generating reducing CO gas and process heat. Coke maintains its strength at elevated temperatures, unlike ...
Intensive reduction of fuel consumption in the sintering …
In another example, the fuel consumption in the sintering process could theoretically be reduced by 43.8 % by distributing the fuel in six layers [33]. Moreover, in an innovative optimized iron ore sintering process proposed by Zhang et al. [34], the fuel consumption could be reduced by 2.66 t/h by distributing the fuel in thirteen layers.
Influence of multiple gaseous medium injection on low-carbon iron ore
Hydrogen-rich gas and steam are widely regarded to be of great potential to mitigate CO 2 emissions in iron ore sintering, these gases can regulate heat distribution in the sintering machines by replacing fossil fuels. However, most sintering machines only use one of the gases as the injecting medium, the potential of this technology has not been developed.
Optimization of gaseous fuel injection for saving energy consumption …
Request PDF | Optimization of gaseous fuel injection for saving energy consumption and improving imbalance of heat distribution in iron ore sintering | It has been widely reported that the sinter ...
Utilization of Biomass Pellets in the Iron Ore Sintering …
3.1 Impact of Biopellet on Sintering Temperature Profiles. Figure 3 shows the temperature profile observed during iron ore sintering process at different proportions of biopellet. With an increase in biopellet the maximum temperature within the sinter bed reduces. In the presence of biomass, the water content required to granulate the sinter raw mix to a moisture …
A Process Intensification Approach to Improve Productivity, …
Waste heat recovery boilers at the sinter cooler generate steam for use in the blast furnace to meet the targets of energy consumption and carbon credits. This steam is also injected into the MND or feed hopper to preheat the feed to the sinter machine. ... Intensification of the iron ore sintering process was approached by injecting hydrogen ...
New approach to improve heat energy utilization efficiency in iron ore sintering: Exploration of surface fuel addition
This study developed a co-processing method using iron ore sintering technology to achieve harmless disposal and resource utilization of CROS. TG-DSC-MS, temperature …
Lower fuel consumption model and air-flow segregation
In order to utilize the spontaneous accumulation of heat (SAH) reasonably and obtain the high quality sinter with low energy consumption, a lower fuel consumption modeling based on raw materials of a certain steel works was built. An air-flow segregation feeding (ASF) experimental equipment was designed to simulate strand feeding process and calculate the …
Recent Advances and Research Status in Energy …
Therefore, saving energy during the sintering process is important to reduce the energy consumption in the iron and steel industry. This paper aims to illustrate recent …
Iron ore sintering
Fig. 15.16A shows a schematic diagram of a heat treatment method to examine the structural change of ore particles during heating (Okazaki and Higuchi, 2005). Ore particles of −2.8 + 2.0 mm are loaded in a Ni crucible of 20 mm in diameter and 15 mm in height and subsequently heated in air in a vertical electric furnace. ... Iron ore sinter ...
Examining low nitrogen oxides combustion in iron ore sintering
The iron ore sintering contributes to more than half of worldwide steel production's total NO x and SO 2 emissions. Globally, a considerable output of iron ore sinter is achieved through sintering processes. Sintering is a significant energy consumer in ironmaking, ranking as the second-largest energy-intensive process after blast furnaces.
Theoretical Energy Consumption Analysis for Sustainable …
Under the specified conditions, the minimum theoretical energy consumption for each process is as follows: coking (2.51 GJ), sintering (0.98 GJ), pelletizing (0.67 GJ), …
Effects of Particle Size of Coke on Iron Ore Sintering Process …
Coke breeze is the main heat source in sintering process. Its combustion yields enough amounts of heat which melts the sinter mix. One of the factors that significantly affect the course of coke breeze combustion is its grain size [1,2,3].It is known that fine-grained coke reduces permeability of the sinter mix and the use of coke breeze with particle size below 1 …
Effect of Ammonia Injection on the Iron Ore Sintering …
The experiment involving ammonia injection was conducted to minimize solid fuel consumption and carbon emissions during the sintering process of iron ore. The sintering bed temperature, sintered ore quality, combustion efficiency, and pollutant emission under different ammonia injection concentrations and coke ratios were investigated. The experimental findings …
Improvement of heat pattern and sinter strength at high …
Iron ore sintering involves various physical and chemical phenomena such as heat and mass transfer, combustion, melting, solidification, evaporation and condensation. Traditionally, coke breeze is the main heat supplier for the iron ore sintering process. The detailed process is described in the published paper (Zhao et al., 2015).