{"title":"将钒铁生产产生的炉渣作为低碳足迹水泥用于耐火浇注料的升级再利用","authors":"","doi":"10.1007/s40831-024-00804-7","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Cement industry is responsible for almost 7% of the total CO<sub>2</sub> emissions, where 60% of them are caused by the unavoidable CaCO<sub>3</sub> calcination to produce Ca-bearing cementitious phases. Meanwhile, steel industry requires substantial amounts of ferrovanadium (FeV), that is produced by aluminothermic reduction, generating calcium aluminate (CA)-rich slags. The FeV slags that are generated contain MgO that is partially or fully incorporated into magnesium aluminate spinel structure. CA phases and MA are the main mineralogical phases in calcium magnesium aluminate (CMA) cements. This makes the FeV by-products suitable alternatives of CMA cement while promoting industrial symbiosis. CMA cement, unlike Portland cement, can be the exact type of cement that is dedicated in high-temperature applications such refractory lining of steel ladles. In this publication, industrial FeV slags were size reduced to match CMA particle size distribution and evaluated as substitutes of commercial CMA cement used for alumina-spinel castables. The refractoriness experiments and the mechanical tests proved that the novel cements are efficient substitutes of CMA. The hydration and also the mechanical behavior of FeV slag-bonded castables is as sufficient as the CMA-bonded castables.</p> <span> <h3>Graphical Abstract</h3> <p> <span> <span> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/40831_2024_804_Figa_HTML.png\"/> </span> </span></p> </span>","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"2 1","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Upcycling of Slags from Ferrovanadium Production as Low-Carbon Footprint Cement for Refractory Castables\",\"authors\":\"\",\"doi\":\"10.1007/s40831-024-00804-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Abstract</h3> <p>Cement industry is responsible for almost 7% of the total CO<sub>2</sub> emissions, where 60% of them are caused by the unavoidable CaCO<sub>3</sub> calcination to produce Ca-bearing cementitious phases. Meanwhile, steel industry requires substantial amounts of ferrovanadium (FeV), that is produced by aluminothermic reduction, generating calcium aluminate (CA)-rich slags. The FeV slags that are generated contain MgO that is partially or fully incorporated into magnesium aluminate spinel structure. CA phases and MA are the main mineralogical phases in calcium magnesium aluminate (CMA) cements. This makes the FeV by-products suitable alternatives of CMA cement while promoting industrial symbiosis. CMA cement, unlike Portland cement, can be the exact type of cement that is dedicated in high-temperature applications such refractory lining of steel ladles. In this publication, industrial FeV slags were size reduced to match CMA particle size distribution and evaluated as substitutes of commercial CMA cement used for alumina-spinel castables. The refractoriness experiments and the mechanical tests proved that the novel cements are efficient substitutes of CMA. The hydration and also the mechanical behavior of FeV slag-bonded castables is as sufficient as the CMA-bonded castables.</p> <span> <h3>Graphical Abstract</h3> <p> <span> <span> <img alt=\\\"\\\" src=\\\"https://static-content.springer.com/image/MediaObjects/40831_2024_804_Figa_HTML.png\\\"/> </span> </span></p> </span>\",\"PeriodicalId\":17160,\"journal\":{\"name\":\"Journal of Sustainable Metallurgy\",\"volume\":\"2 1\",\"pages\":\"\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sustainable Metallurgy\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s40831-024-00804-7\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sustainable Metallurgy","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s40831-024-00804-7","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Upcycling of Slags from Ferrovanadium Production as Low-Carbon Footprint Cement for Refractory Castables
Abstract
Cement industry is responsible for almost 7% of the total CO2 emissions, where 60% of them are caused by the unavoidable CaCO3 calcination to produce Ca-bearing cementitious phases. Meanwhile, steel industry requires substantial amounts of ferrovanadium (FeV), that is produced by aluminothermic reduction, generating calcium aluminate (CA)-rich slags. The FeV slags that are generated contain MgO that is partially or fully incorporated into magnesium aluminate spinel structure. CA phases and MA are the main mineralogical phases in calcium magnesium aluminate (CMA) cements. This makes the FeV by-products suitable alternatives of CMA cement while promoting industrial symbiosis. CMA cement, unlike Portland cement, can be the exact type of cement that is dedicated in high-temperature applications such refractory lining of steel ladles. In this publication, industrial FeV slags were size reduced to match CMA particle size distribution and evaluated as substitutes of commercial CMA cement used for alumina-spinel castables. The refractoriness experiments and the mechanical tests proved that the novel cements are efficient substitutes of CMA. The hydration and also the mechanical behavior of FeV slag-bonded castables is as sufficient as the CMA-bonded castables.
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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