以还原剂的替代应用为重点,对利用含金属废料生产颗粒进行能源评估和数学建模

IF 2.8 4区 工程技术 Q2 ENGINEERING, CHEMICAL Processes Pub Date : 2024-09-09 DOI:10.3390/pr12091938
Augustin Varga, Jan Kizek, Miroslav Rimar, Marcel Fedak, Gustáv Jablonský, Peter Oravec, Wojciech Bialik
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引用次数: 0

摘要

这项研究的作者重点研究了利用含金属废物(特别是铁精矿)加工球团过程的能源和材料评估。建立了一个用于工艺评估的数学模型,并利用该模型对金属化球团加工过程中的参数进行了热力学计算。通过热力学计算,确定了各个设备(干燥室、回转窑、冷却器)中的装料焓。为了还原氧化铁,将焦炭(氧化铁还原率分别为 50%、61% 和 92%)和褐煤(氧化铁还原率分别为 69% 和 92%)中的碳作为球团的一部分。氧化铁的还原程度是一个决定性参数,还原剂的消耗量与碳对氧化铁的直接还原程度相对应,系数为 1.5。另一个决定性参数是各个装置的输入和输出温度。为了更精确地描述单个设备的过程,我们进行了分区计算。计算结果是对还原剂和相关过程的可行替代品的分析和建议。
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Energy Evaluation and Mathematical Modeling of Pellet Production from Metal-Bearing Waste with a Focus on Alternative Applications of Reducing Agents
The authors of this study focused on the energy and material assessment of processes for processing pellets from metal-bearing waste, specifically Fe concentrate. A mathematical model was created for process evaluation, with which thermotechnical calculations of parameters in the processing of metallized pellets were carried out. Thermodynamic calculations were performed to determine the enthalpy of the charge in individual devices (drying chamber, rotary kiln, cooler). For the reduction of Fe oxides, carbon from coke (with Fe oxide reductions of 50%, 61%, and 92%) and lignite (with Fe oxide reductions of 69% and 92%) were considered as part of the pellets. The degree of reduction of iron oxides was a determining parameter, and the consumption of the reducing agent corresponded to the direct reduction of Fe oxides by carbon with a coefficient of 1.5. Another determining parameter was the input and output temperature in individual devices. For a more precise description of the processes in individual devices, calculations were carried out zonally. The results of the calculations are analyses and recommendations for feasible alternatives for the reducing agent and associated processes.
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来源期刊
Processes
Processes Chemical Engineering-Bioengineering
CiteScore
5.10
自引率
11.40%
发文量
2239
审稿时长
14.11 days
期刊介绍: Processes (ISSN 2227-9717) provides an advanced forum for process related research in chemistry, biology and allied engineering fields. The journal publishes regular research papers, communications, letters, short notes and reviews. Our aim is to encourage researchers to publish their experimental, theoretical and computational results in as much detail as necessary. There is no restriction on paper length or number of figures and tables.
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