Influence of coke rate on thermal treatment of waste selective catalytic reduction (SCR) catalyst during iron ore sintering

Ma, Pengnan; Wang, Jiankang; Meng, Hanxiao; Lv, Laiquan; Fang, Hao; Cen, Kefa; Zhou, Hao

doi:10.1016/j.cjche.2021.02.029

Cited by 4 publications

(2 citation statements)

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“…Due to all three indicators of sintered ore yield, TI, and productivity being critical, the sintering comprehensive index was calculated to comprehensively evaluate the sintered ore quality. The calculation method refers to our previous works. , The comprehensive index of sintered ore with different ammonia injection concentrations and different coke ratios is shown in Figure . The comprehensive index gradually increases as the ammonia injection concentration increases from 0 to 1% vol.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Ammonia Injection on the Iron Ore Sintering Process: Reducing Fossil Fuel Consumption and Carbon Emissions

Wang,

Meng,

Liu

et al. 2023

Energy Fuels

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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 indicate that the injection of ammonia has a positive impact on the thermal mode of the sintering bed, leading to an increased yield of sintered ore and an improved tumbler index. Additionally, ammonia injection enhances the fuel combustion efficiency and reduces CO emissions. Compared with the traditional case that without ammonia injection, the yield under 1.5% vol ammonia injection increased from 63.69 to 74.78%, the tumbler index increased from 54.9 to 60.7%, and the average combustion efficiency increased from 89.42 to 93.42%. Under 1.0% vol ammonia injection, it is possible to decrease the coke ratio from 4.5 to 3.5% without weakening the sintered ore quality and the solid fuel consumption ratio and carbon emissions can be reduced by 22.2%.

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Section: Resultsmentioning

confidence: 99%

“…The calculation method refers to our previous works. 49,50 The comprehensive index of sintered ore with different ammonia injection concentrations and different coke ratios is shown in Figure 14. The comprehensive index gradually increases as the ammonia injection concentration increases from 0 to 1% vol.…”

Section: Comprehensive Evaluation and Further Discussionmentioning

confidence: 99%