利用响应面法(RSM)优化卡努吉钛铁矿的氢还原反应

IF 2.5 3区 材料科学 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Leila Ghasemi, Seyed Hossein Seyedein, Mandana Adeli, Mohammad Reza Aboutalebi
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引用次数: 0

摘要

采用响应面方法 (RSM),研究了不同工艺参数下 Kahnuj 钛铁矿精矿(伊朗克尔曼)的氢还原。阐明了主要影响参数对钛铁矿精矿制成的球团还原质量损失的影响。研究的自变量包括还原温度范围 850-1050 ℃、预氧化温度范围 800-1000 ℃ 和气体流速 200-500 mL min-1。结果发现,还原温度和预氧化温度是影响质量损失的最重要因素。最佳质量损失条件被确定为还原温度为 1045 ℃,预氧化温度为 860 ℃,氢气流速为 217 mL min-1。最佳实验质量损失为 15.1%,与预测值 15.3% 相符。通过还原过程,钛铁矿相转化为金属铁、金红石、还原金红石和 M3O5 固溶体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Optimization of Hydrogen Reduction of Kahnuj Ilmenite Using Response Surface Methodology (RSM)

Optimization of Hydrogen Reduction of Kahnuj Ilmenite Using Response Surface Methodology (RSM)

The hydrogen reduction of Kahnuj ilmenite concentrate (Kerman, Iran) was studied under different process parameters using Response Surface Methodology (RSM). The effect of major influencing parameters on the reductive mass loss of pellets made from ilmenite concentrate was elucidated. The independent variables examined consisted of the reduction temperature range of 850–1050 °C, pre-oxidation temperature range of 800–1000 °C, and gas flow rates of 200–500 mL min−1. It was found that the reduction temperature and pre-oxidation temperature were the most significant factors affecting the mass loss. The optimum mass loss conditions were determined to be a reduction temperature of 1045 °C, pre-oxidation temperature of 860 °C, and hydrogen flow rate of 217 mL min−1. The optimal experimental mass loss of 15.1% was in accordance with the predicted value of 15.3%. The ilmenite phase transformed into metallic iron, rutile, reduced rutile, and M3O5 solid solution through the reduction process.

Graphical Abstract

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来源期刊
Journal of Sustainable Metallurgy
Journal of Sustainable Metallurgy Materials Science-Metals and Alloys
CiteScore
4.00
自引率
12.50%
发文量
151
期刊介绍: Journal of Sustainable Metallurgy is dedicated to presenting metallurgical processes and related research aimed at improving the sustainability of metal-producing industries, with a particular emphasis on materials recovery, reuse, and recycling. Its editorial scope encompasses new techniques, as well as optimization of existing processes, including utilization, treatment, and management of metallurgically generated residues. Articles on non-technical barriers and drivers that can affect sustainability will also be considered.
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