Valorization of Iron Ore Tailings from Nador, Morocco, as a Sustainable Additive in the Manufacture of Red Clay Fired Bricks

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-01 DOI:10.12911/22998993/187956

Faiçal El Khazanti, Ahmed Rachid, M. El Ouahabi, Hicham Nasri, Dounia Azerkane, Yassine Et-tayea, E. Gharibi

{"title":"Valorization of Iron Ore Tailings from Nador, Morocco, as a Sustainable Additive in the Manufacture of Red Clay Fired Bricks","authors":"Faiçal El Khazanti, Ahmed Rachid, M. El Ouahabi, Hicham Nasri, Dounia Azerkane, Yassine Et-tayea, E. Gharibi","doi":"10.12911/22998993/187956","DOIUrl":null,"url":null,"abstract":"High iron ore production generates substantial solid waste. Storing this waste in dams poses environmental issues and safety risks for the population. The aim of this study was to valorize sterile waste (IOT) from an inactive iron mine in the Nador region of northeastern Morocco, as an additive in the manufacture of fired bricks made from a red clay (AJH) extracted from the Oujda region. For this purpose, brick specimens were obtained using a mix of a 40% of AJH and 60% of IOT. Physico-chemical, geotechnical and mineralogical characterization techniques were applied to qualify raw material. IOT consisted of hematite, magnetite, pyrite, jarosite and quartz and AJH of kaolinite, chlorite, calcite, hematite, dolomite, quartz and vermiculite. After firing the specimens at 500 °C, 850 °C and 1100 °C, mineralogical composition, bulk density, compressive strength and microstructure behavior of the specimens was assessed. The compressive strength of the bricks containing IOT is 1.25 MPa at T = 500 °C and it varies little at 1100 °C. The compressive strength of the reference sample is 2.94 MPa at 1100 °C. The material has low vitrification and greater porosity compared to the reference bricks. Adding IOT brings significant changes to the color of fired bricks.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"15 9","pages":""},"PeriodicalIF":16.4000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.12911/22998993/187956","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

High iron ore production generates substantial solid waste. Storing this waste in dams poses environmental issues and safety risks for the population. The aim of this study was to valorize sterile waste (IOT) from an inactive iron mine in the Nador region of northeastern Morocco, as an additive in the manufacture of fired bricks made from a red clay (AJH) extracted from the Oujda region. For this purpose, brick specimens were obtained using a mix of a 40% of AJH and 60% of IOT. Physico-chemical, geotechnical and mineralogical characterization techniques were applied to qualify raw material. IOT consisted of hematite, magnetite, pyrite, jarosite and quartz and AJH of kaolinite, chlorite, calcite, hematite, dolomite, quartz and vermiculite. After firing the specimens at 500 °C, 850 °C and 1100 °C, mineralogical composition, bulk density, compressive strength and microstructure behavior of the specimens was assessed. The compressive strength of the bricks containing IOT is 1.25 MPa at T = 500 °C and it varies little at 1100 °C. The compressive strength of the reference sample is 2.94 MPa at 1100 °C. The material has low vitrification and greater porosity compared to the reference bricks. Adding IOT brings significant changes to the color of fired bricks.

查看原文本刊更多论文

摩洛哥纳祖尔铁矿尾矿的价值评估，作为红土烧结砖生产中的可持续添加剂

铁矿石的大量生产会产生大量固体废物。将这些废物储存在大坝中会带来环境问题，并对居民造成安全风险。这项研究的目的是将摩洛哥东北部纳祖尔地区一个闲置铁矿的无菌废物（IOT）作为一种添加剂，用于制造用乌季达地区开采的红粘土（AJH）烧制的砖块。为此，使用 40% 的 AJH 和 60% 的 IOT 混合物制作了砖块试样。对原材料进行了物理化学、岩土工程和矿物学特征描述。IOT 由赤铁矿、磁铁矿、黄铁矿、绿泥石和石英组成，AJH 由高岭石、绿泥石、方解石、赤铁矿、白云石、石英和蛭石组成。在 500 ℃、850 ℃ 和 1100 ℃ 下焙烧试样后，对试样的矿物成分、体积密度、抗压强度和微观结构行为进行了评估。含有 IOT 的砖块在 T = 500 °C 时的抗压强度为 1.25 兆帕，在 1100 °C 时变化不大。参照样品在 1100 °C 时的抗压强度为 2.94 兆帕。与参考砖相比，该材料的玻璃化程度低，孔隙率大。添加 IOT 会使烧结砖的颜色发生明显变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.