Reducing the Sintering Flue Gas Pollutants Emissions Based on the Accumulation Heat Effect in Iron Ore Sintering Process

Qie, Junmao; Zhang, C. X.; Guo, Yuhai; Wang, H. F.; Wu, Shengli

doi:10.1007/s12666-018-1456-z

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…Recently, the main research directions for reducing carbon emissions in the production process are as follows: (1) improving raw material conditions and optimising ore blending; [3][4][5][6] (2) processing improvements based on conventional sintering; [7][8][9] (3) improving waste heat recovery and utilisation; [10][11][12] (4) improving equipment utilisation and reducing air leakage rates. [13][14][15] These studies have yielded some results in reducing carbon emissions and energy consumption, while the presence of solid fuels has tied the sintering process to a reduction in carbon emissions. For example, the CO 2 mitigation dosage is 11.75 kg/ton sinters when 15% solid fuel is replaced with NG.…”

Section: Introductionmentioning

confidence: 99%

Effect of Process Parameters on Mineralisation Consolidation in Carbon-free Iron Ore Sintering Process

Jiang,

Chen,

Zhou

et al. 2023

ISIJ Int.

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Sintering, as one of the major sources of carbon emissions in the steel industry, is in urgent need of innovation in carbon reduction technology under the targets of carbon peaking and carbon neutrality in China. We propose the carbon free sintering process which is similar to the belt roaster, where heat is provided by gas fuel combustion for the layer. In order to achieve the process, this study uses the microsintering method to simulate it by varying the sintering temperature, sintering time and binary basicity of the mixture. It was investigated the process of mineralisation solidification of carbon-free sintering and to provide relevant guidance for future carbon-free sintering process experiments. As the sintering temperature increased, the strength and calcium ferrite of the samples first increased and then decreased, reach the maximum value at 1 300°C and 1 275°C respectively. However, the porosity of the samples first decreased and then increased, reach the minimum value at 1 275°C. As the sintering time increased, the strength and calcium ferrite first increased and then decreased, reach the maximum values at 12 min and 6 min respectively, and the porosity of the samples first decreased and then increased, reach the minimum values at 6 min. As the binary basicity increased, the strength of the samples first decreased and then increased, reach the minimum value at basicity 1.8, and the calcium ferrite and porosity of the samples gradually increased. The carbon-free sintering process does not change the consolidation process of iron ore, and it has theoretical feasibility.

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Section: Introductionmentioning

confidence: 99%

Effect of Process Parameters on Mineralisation Consolidation in Carbon-free Iron Ore Sintering Process

Jiang,

Chen,

Zhou

et al. 2023

ISIJ Int.

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“…Many biomass fuels have the characteristics of low sulphur and nitrogen contents, which can lead to reductions in the emissions of SO 2 and NO x from the sintering source [4][5][6]. However, the reactivity of biomass fuel is better than that of coke breeze, which leads to a mismatch of their combustion rates; thus, the heat of the combustion layer is not concentrated, and the temperature of the layer is reduced, which limits the use of biomass fuel in the sintering of iron ore powder [7][8][9]. Currently, there is limited research on the use of biomass fuel in the iron ore sintering process.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Rational Proportion of Raw Materials Based on Biomass

et al. 2021

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Most of the air pollutants in the steel industry come from the sintering process, and the air pollutants produced by the sintering process mainly come from the sinter fuel (coke breeze). The S and N content of biomass fuel is low; therefore, biomass fuel is used instead of coke breeze for sintering to reduce the emission of the sinter flue gas pollutants. However, the use of biomass fuel reduces the sintering layer temperature, which results in the deterioration of the sinter properties. In order to ensure the quality of sintering base on biomass fuel, the thermodynamic calculation and related experiments were carried out, the effects of different basicity, MgO and Al2O3 content on the formation of low melting point minerals in sintered mixture were studied, and the suitable composition of sintered mixture was determined in this paper, so as to reduce the liquid phase formation temperature of sinter and increase in biomass fuel addition, which provided theoretical support for the application of biomass fuel in sintering. Experimental results indicate that the suitable conditions for the low-temperature sintering were a basicity of 2.0, and MgO and Al2O3 contents of 1.0% and 1.8%, respectively. Under this condition, more biomass fuel can be used to replace coke breeze, and the emission of flue gas pollutants can be greatly reduced.

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Prediction NOx emission from sintering plant with a radial basis function and back propagation hybrid neural network

Qin

Deng

et al. 2021

Int. J. Environ. Sci. Technol.

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Reducing the Sintering Flue Gas Pollutants Emissions Based on the Accumulation Heat Effect in Iron Ore Sintering Process

Cited by 3 publications

References 6 publications

Effect of Process Parameters on Mineralisation Consolidation in Carbon-free Iron Ore Sintering Process

Effect of Process Parameters on Mineralisation Consolidation in Carbon-free Iron Ore Sintering Process

Analysis of Rational Proportion of Raw Materials Based on Biomass

Prediction NOx emission from sintering plant with a radial basis function and back propagation hybrid neural network

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