Studies on Thermochemical Processes Occurring under the Roasting of Siderite Ores

Q4 Materials Science
B. P. Yur’ev, V. A. Gol’tsev, V. A. Dudko
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引用次数: 0

Abstract

Siderite ores of the Bakalskoe deposit contain iron, magnesium and manganese carbonates. Since the content of manganese in the ore is insignificant, its effect of the processes under consideration is not taken into account in the calculations. Siderite ores are roasted in shaft furnaces, resulting from which carbonate decomposition occurs at a high level of heat consumption. In order to optimize the operating parameters of the roasting process and to determine the required fuel consumption, a thermodynamic analysis has been carried out, which made it possible to determine the initial temperature range for the decomposition of pure iron carbonate and sideroplesite (an ore mineral containing from 70 to 95% of iron carbonate), as well as to calculate the specific and equivalent heat of the decomposition thereof with the use of an approximate solution to the phase transition problem and the data of thermographic analysis. The comparison of the results obtained in determining the specific heat has demonstrated quite a good agreement between the experimental values and the values obtained with the use of calculations. The results of this work are of interest for specialists engaged in the preparation of siderite ores for blast furnace processing.

Abstract Image

菱铁矿焙烧过程中的热化学过程研究
摘要 Bakalskoe 矿床的菱铁矿石含有铁、镁和锰碳酸盐。由于矿石中的锰含量微乎其微,因此在计算过程中没有考虑其对工艺的影响。菱铁矿矿石在竖炉中焙烧,碳酸盐的分解需要消耗大量的热量。为了优化焙烧工艺的运行参数并确定所需的燃料消耗量,进行了热力学分析,从而确定了纯碳酸铁和菱铁矿(一种含碳酸铁 70% 至 95% 的矿石)分解的初始温度范围,并利用相变问题的近似解法和热成像分析数据计算了其分解的比热和当量热。对测定比热的结果进行比较后发现,实验值和计算值非常一致。这项工作的结果对从事高炉加工菱铁矿石制备的专家很有意义。
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来源期刊
Steel in Translation
Steel in Translation Materials Science-Materials Science (all)
CiteScore
0.60
自引率
0.00%
发文量
81
期刊介绍: Steel in Translation  is a journal that represents a selection of translated articles from two Russian metallurgical journals: Stal’  and Izvestiya Vysshikh Uchebnykh Zavedenii. Chernaya Metallurgiya . Steel in Translation  covers new developments in blast furnaces, steelmaking, rolled products, tubes, and metal manufacturing as well as unconventional methods of metallurgy and conservation of resources. Papers in materials science and relevant commercial applications make up a considerable portion of the journal’s contents. There is an emphasis on metal quality and cost effectiveness of metal production and treatment.
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