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利用竹炭部分替代焦炭粉实现铁矿石烧结的可持续脱碳.pdf

上传人: 可*** 编号:991959 2025-12-07 34页 2.66MB

1、Sustainable Sustainable DecarbonisationDecarbonisation of of Iron ore Sintering by partial Iron ore Sintering by partial replacement of Coke Breeze replacement of Coke Breeze with Bamboo with Bamboo BiocharBiochar at SAIL at SAIL DurgapurDurgapurI Majumder,I Majumder,CGM,Sinter PlantCGM,Sinter Plant

2、A Mallick,A Mallick,GM&HOG,R&DGM&HOG,R&DS Dhara,S Dhara,DGM,R&D DGM,R&D SAILSAILSAIL networkSintering Basics&Role of Coke BreezeBiochar as a Substitute as alternate fuelCharacterisation&ComparisonLab-scale ExperimentsPlant-scale Trial&Pallet DissectionTrial ResultsFuture ScopePresentation roadmapPre

3、sentation roadmapSAIL networkPresentation roadmapPresentation roadmapSAIL networkSAIL network Indias largest state-owned steel producer,operating five integrated steel plants and several special-steel units.Achieved annual production in FY 2024-25:20.31 MT hot metal and 19.17 MT crude steel.Strategi

4、c focus on value-added&special steels,supported by in-house R&D(RDCIS)and captive raw-material mines.Durgapur Durgapur Steel PlantSteel PlantR&DR&DDecarbonisation and sustainability through cleaner steelmaking,higher energy efficiency,renewable energy use,waste reduction,and responsible miningSinter

5、ing Basics&Role of Coke BreezePresentation roadmapPresentation roadmapSintering basicsSintering basicsUp to 70%of mined material turns into finesrich in Fe(62%)and too valuable to discard.Iron ore fines cannot enter the blast furnace directly;agglomeration is essential for efficient charging.Using s

6、inter conserves fines and supports ecological sustainability.Sinter provides pre-reduced material with high softening temperature and narrow softening range.Enhances flux utilisation and delivers superior reducibility compared to other burden materials.Sintering plant layoutSintering plant layoutCok

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本文主要研究了在印度SAIL钢铁公司的烧结过程中,用竹子生物炭部分替代焦炭屑的可持续脱碳方法。关键点如下: 1. 生物炭作为替代燃料:竹子生物炭被认为是一种碳中性资源,可减少钢铁生产中的碳排放,具有潜在的脱碳效益,被联合国气候变化框架公约认可。 2. 实验与数据分析:实验室和工厂规模的试验表明,用生物炭替代焦炭屑可显著减少焦炭消耗,每吨烧结减少约8.5公斤的二氧化碳排放。 3. 烧结质量和生产效率:生物炭的使用略微提高了烧结生产率,并增加了烧结矿的机械强度。 4. 挑战与限制:生物炭具有较低的发热值和较高的挥发性,可能导致火焰前沿不稳定和过度还原铁氧化物,影响烧结质量。 5. 未来展望:提出了一种闭环脱碳模型,通过在钢铁厂附近的退化土地上种植生物质,用于生物炭和合成气的共同生产,以实现烧结厂的脱碳。 核心数据引用:使用生物炭替代焦炭屑,每吨烧结可减少约8.5公斤的二氧化碳排放,烧结矿的机械强度提高,但存在燃烧速率快和过度还原等问题。
"竹炭替代焦炭,钢铁减碳新路径?" "生物炭炼钢,环保效益大揭秘!" "钢铁业减碳,未来可期!"
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