Journal of Sustainable Metallurgy最新文献_第4页

A New Approach of Pelletizing: Use of Low-Grade Ore as a Potential Raw Material 造粒新方法：利用低品位矿石作为潜在原料

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-10 DOI: 10.1007/s40831-024-00921-3

Dohyeon Kim, Byeongsoo Yoo, Leonardo Tomas da Rocha, Seongkyu Cho, Seongjin Kim, Sung-Mo Jung

{"title":"A New Approach of Pelletizing: Use of Low-Grade Ore as a Potential Raw Material","authors":"Dohyeon Kim, Byeongsoo Yoo, Leonardo Tomas da Rocha, Seongkyu Cho, Seongjin Kim, Sung-Mo Jung","doi":"10.1007/s40831-024-00921-3","DOIUrl":"https://doi.org/10.1007/s40831-024-00921-3","url":null,"abstract":"For carbon neutrality, the use of sinter should be decreased owing to higher CO2 emission in the sintering process of the blast furnace operations. This trend might contribute to the increased use of iron ore pellets with lower CO2 emission in the fabrication process, high reducibility and gas permeability due to higher mechanical strength. The pelletizing process mostly uses high-grade iron ore such as magnetite (Fe3O4) as the main raw material, which has been depleted due to the increasing demand for pellet production. The current study attempted to replace magnetite ore with low-grade limonite ore (Fe2O3∙nH2O) at different additional levels (10, 30, 50 and 100 wt%). The augmented limonite content influenced the increase in the porosity of pellets, which resulted from dehydration. The effect of microstructure on the compressive strength of mixed pellets before reduction and the reduction behavior of mixed pellets in a hydrogen atmosphere could be elucidated by porosity and pore size distribution analysis. The integration of limonite with magnetite facilitated the formation of small-sized pores, which in turn resulted in a significantly enhanced microstructure, with the limonite-mixed pellets demonstrating compressive strength comparable to that of magnetite pellets. The goethite phase provided a pathway for hydrogen permeability, and consequently, the reduction degree of limonite-mixed pellets in a H2 atmosphere amounted to a reduction degree of 80%, which is similar to that of magnetite pellets. The mechanical strength of mixed pellets during reduction suggests their potential to withstand the stack layer in blast furnace operations. These findings could suggest the potential to utilize low-grade iron ore pellet process.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>Enhancing blast furnace sustainability via pellet feed optimization\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"4 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eco-Friendly and Efficient Alumina Recovery from Coal Fly Ash by Employing the CaO as an Additive During the Vacuum Carbothermic Reduction and Alkali Dissolution 在真空碳热还原和碱溶解过程中使用氧化钙作为添加剂，从煤粉灰中回收环保高效的氧化铝

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-10 DOI: 10.1007/s40831-024-00916-0

Zitao Rao, Wenzhou Yu, Haitao Yuan, Peng Wei, Fan Yang, Joseph Emmanuel Nyarko-Appiah

{"title":"Eco-Friendly and Efficient Alumina Recovery from Coal Fly Ash by Employing the CaO as an Additive During the Vacuum Carbothermic Reduction and Alkali Dissolution","authors":"Zitao Rao, Wenzhou Yu, Haitao Yuan, Peng Wei, Fan Yang, Joseph Emmanuel Nyarko-Appiah","doi":"10.1007/s40831-024-00916-0","DOIUrl":"https://doi.org/10.1007/s40831-024-00916-0","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>With the growing concern of environmental protection and waste recycling, recovery of high-value metal from coal fly ash (CFA) has attracted a lot of attention around the world. In our previous study, CaO was employed as an additive to react with mullite (3Al2O3·2SiO2) in CFA to produce CaO·xAl2O3, by which the extraction of alumina was strengthened tremendously. However, the dissolving mechanism of CaO·xAl2O3 in alkali liquor has not yet been conducted in in-depth research, which casts a shadow for the further progress of the process. In this paper, with the aim of clarifying the alkali dissolving mechanism as well as developing an eco-friendly alumina recovery process, the effect of CaO addition on the mineralogical transformation of CFA and the dissolving behaviors of CaO·xAl2O3 in alkali liquor were investigated thoroughly. The results show that the mullite in CFA can be converted to Fe-Si alloys and CaO·xAl2O3 with the addition of CaO. Additionally, it is proved that the liquid/solid ratio, the alkali concentration, and the dissolving temperature would be the most critical impactors to decide the extraction rate of alumina. Under the optimal conditions, the extraction rate of alumina attained 93.8% and the CaO can be recycled for cyclic utilization in this process.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"7 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Removal of Zn Ions from Synthetic Wastewater Using Graphene Oxide as a Nanocollector in Ion Flotation 在离子浮选中使用氧化石墨烯作为纳米集电体去除合成废水中的锌离子

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-09 DOI: 10.1007/s40831-024-00917-z

Arash Sobouti, Bahram Rezai, Fatemeh Sadat Hoseinian

引用次数: 0

Promoting the Utilization of High-Alumina Iron Ores During Sintering by Pre-preparing a Low-Melting-Point Flux 通过预先制备低熔点助熔剂促进烧结过程中对高铝铁矿石的利用

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-09 DOI: 10.1007/s40831-024-00923-1

Junjie Zeng, Jin Wang, Rui Wang, Ningyu Zhang, Yongda Li, Yuxiao Xue, Xuewei Lv

{"title":"Promoting the Utilization of High-Alumina Iron Ores During Sintering by Pre-preparing a Low-Melting-Point Flux","authors":"Junjie Zeng, Jin Wang, Rui Wang, Ningyu Zhang, Yongda Li, Yuxiao Xue, Xuewei Lv","doi":"10.1007/s40831-024-00923-1","DOIUrl":"https://doi.org/10.1007/s40831-024-00923-1","url":null,"abstract":"High-alumina iron ore sintering is characterized by poor sinter indices and high carbon emission due to the limited formation amount of liquid phase. In this study, the conventional Ca-bearing flux (i.e., burnt lime) was substituted by a new Ca-bearing flux with low melting point (i.e., prefabricated calcium ferrite) for the improvement of the formation ability of liquid phase during sintering. The substitution of prefabricated calcium ferrite for burnt lime contributed to the reduction of the formation temperature of liquid phase and the improvement of liquid-phase fluidity. At the optimum substitution ratio of 20%, the strength of sinter compacts was improved by 38.38% in the mini-sintering tests due to the more formation of liquid phase, especially SFCA (i.e., Silico-ferrite of calcium and alumina). In addition, the proportion of high-alumina iron ore can be appropriately increased from 10.20% to 25.20% at the substitution ratio of 20% under the premise of the similar strength of sinter compacts. High-alumina iron ore can be effectively utilized during sintering by pre-preparing the low melting-point flux, which will be further proved by the relevant sinter pot tests in our follow-up study.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"15 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Copper Recovery and Fluorine Fixation from Spent Carbon Cathode Reduction Copper Slag by Response Surface Methodology 响应曲面法优化废碳阴极还原铜渣中铜的回收和氟的固定

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-09 DOI: 10.1007/s40831-024-00919-x

Mingyang Li, Shiwei Zhou, Bo Li, Yonggang Wei, Hua Wang

引用次数: 0

Utilization of Hazardous Waste by Co-Treating Secondary Aluminum Dross and Red Mud Residue for Brickmaking 通过将二次铝渣和红泥渣协同处理用于制砖来利用危险废物

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-06 DOI: 10.1007/s40831-024-00912-4

Chenchen Zhou, Ling Wang, Chengyan Wang

{"title":"Utilization of Hazardous Waste by Co-Treating Secondary Aluminum Dross and Red Mud Residue for Brickmaking","authors":"Chenchen Zhou, Ling Wang, Chengyan Wang","doi":"10.1007/s40831-024-00912-4","DOIUrl":"https://doi.org/10.1007/s40831-024-00912-4","url":null,"abstract":"Secondary aluminum dross (SAD) and red mud residues (RMR) are hazardous wastes generated during the production of alumina and aluminum metal processing, containing unstable AlN, fluoride, chlorides, and alkalis. A novel and pragmatic approach was proposed in this study for the synergistic treatment of waste, wherein hazardous substances are modified through the incorporation of SAD, RMR, and silicate tailings (ST) derived from bauxite flotation, ultimately resulting in the production of ceramic sintered bricks. During brickmaking, AlN in SAD was transformed into Al(OH)3 through an alkali-catalytic process, and fluorides and chlorides in SAD were efficiently modified and solidified into the silicate mineral marialite Na4[AlSi3O8]3(F,Cl). Abundant alkalis in RMR transformed into the stable mineral feldspar Na1–xCaxAl1+xSi3–xO8, which is the main phase of the sintered brick. The optimal conditions for achieving superior performance of sintered bricks included a mass ratio of SAD, RMR, and ST at 3:3:4, sintering temperature of 1120 °C, and a sintering duration of 2 h. The water absorption rate, porosity, volume density, and compressive strength of the sintered brick in the optimum conditions were 13.69, 26.75%, and 83.04 MPa, respectively, conforming to the industry standards for brick performance.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"150 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Hydrogen Reduction of Kahnuj Ilmenite Using Response Surface Methodology (RSM) 利用响应面法（RSM）优化卡努吉钛铁矿的氢还原反应

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-04 DOI: 10.1007/s40831-024-00904-4

Leila Ghasemi, Seyed Hossein Seyedein, Mandana Adeli, Mohammad Reza Aboutalebi

{"title":"Optimization of Hydrogen Reduction of Kahnuj Ilmenite Using Response Surface Methodology (RSM)","authors":"Leila Ghasemi, Seyed Hossein Seyedein, Mandana Adeli, Mohammad Reza Aboutalebi","doi":"10.1007/s40831-024-00904-4","DOIUrl":"https://doi.org/10.1007/s40831-024-00904-4","url":null,"abstract":"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.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"38 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the Precise Addition of Scrap Steel Based on Molten Iron Conditions During the Converter Smelting Process 基于转炉冶炼过程中铁水条件的废钢精确添加研究

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-04 DOI: 10.1007/s40831-024-00911-5

Fang Gao, Da-zhi Wang, Yan-ping Bao, Li-dong Xing, Chao Gu

{"title":"Research on the Precise Addition of Scrap Steel Based on Molten Iron Conditions During the Converter Smelting Process","authors":"Fang Gao, Da-zhi Wang, Yan-ping Bao, Li-dong Xing, Chao Gu","doi":"10.1007/s40831-024-00911-5","DOIUrl":"https://doi.org/10.1007/s40831-024-00911-5","url":null,"abstract":"Scrap steel is an important raw material in converter smelting. Increasing the weight of scrap steel can both improve energy recovery rate and reduce the consumption of auxiliary materials. However, due to the fluctuation in raw material conditions and the dispatch hysteresis of the scrap steel, conservative approaches are often adopted during the addition weight of the scrap steel. This study identified the key influencing factors of the scrap ratio in the converter and proposed a scrap addition principle based on molten iron conditions. To solve the problem of precise addition of scrap steel, this study proposed a combined scrap steel addition mode and established a burdening calculation model, making the weight of added scrap steel adjustable during the smelting process. This work can guide the energy in the furnace to converge towards the product and improve the energy recovery rate in the converter. The industrial experiments of this scrap steel addition mode showed that the average scrap ratio increased by 2.13%, the consumption of lime per ton of steel decreased by 1.5 kg/t, the consumption of iron ore per ton decreased by 1.52 kg/t, and the production of steel slag per ton decreased by 10.2 kg/t, significantly reducing costs and increasing efficiency.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"47 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agave Bagasse Biomass as Reducing Agent for the Reduction of Ilmenite 龙舌兰蔗渣生物质作为还原剂还原钛铁矿

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-09-03 DOI: 10.1007/s40831-024-00907-1

Miguel Ángel Martínez-Ponce, Noemí Ortiz Lara, Fabiola Nava-Alonso, Mario Ávila-Rodríguez, Ricardo Morales Estrella, Ramiro Escudero García, Carlos León-Patiño, Diana Cholico-González

{"title":"Agave Bagasse Biomass as Reducing Agent for the Reduction of Ilmenite","authors":"Miguel Ángel Martínez-Ponce, Noemí Ortiz Lara, Fabiola Nava-Alonso, Mario Ávila-Rodríguez, Ricardo Morales Estrella, Ramiro Escudero García, Carlos León-Patiño, Diana Cholico-González","doi":"10.1007/s40831-024-00907-1","DOIUrl":"https://doi.org/10.1007/s40831-024-00907-1","url":null,"abstract":"Biomass is a renewable energy source, and its application represents a diminution of CO2 emissions, low fossil fuels exploitation, better management, and low cost because biomass is considered a waste. Agave bagasse biomass obtained from the Tequila industry has remarkable characteristics such as low S, N, and ashes contents, which are useful for the reduction of the ferrous minerals such as ilmenite (FeO∙TiO2). Reduction of ilmenite requires high temperatures and long residence times; coke is a common reductant but has elevated cost and limited reserves. Therefore, the reduction of ilmenite is a challenging process and the integration of renewable reductant sources such as agave bagasse offers a good alternative. This work focuses on reducing ilmenite by agave bagasse; the effect of temperature, residence time, and molar ratio of ilmenite:carbon from agave bagasse (I:AB) were assessed by X-ray diffraction, scanning electron microscopy, and metallization percentage. At 1373 K, 30 min, and I:AB = 1:2.1, the reduction of ilmenite produced TiO2 and 85.6% of total iron was converted in metallic iron. Agave bagasse is transformed in the same step as ilmenite reduction, avoiding the pre-treatment of the biomass. A correlation of the experimental results with the thermodynamic data demonstrates that ilmenite reduction depends highly on the carbon generated, but the volatile matter creates porosity. Agave bagasse biomass is an excellent reducing agent for the ilmenite at short residence times, achieving a high metallization percentage. It is a substitute for carbon sources, contributing to the utilization of waste for a more sustainable process.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"1 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carburization Behavior of High-Grade Pellets After Direct Reduction in Pure Hydrogen 在纯氢气中直接还原后高级别颗粒的渗碳行为

IF 2.4 3区材料科学

Journal of Sustainable Metallurgy Pub Date : 2024-08-30 DOI: 10.1007/s40831-024-00906-2

Angelo Perrone, Pasquale Cavaliere, Behzad Sadeghi, L. Dijon, A. Laska, D. Koszelow

{"title":"Carburization Behavior of High-Grade Pellets After Direct Reduction in Pure Hydrogen","authors":"Angelo Perrone, Pasquale Cavaliere, Behzad Sadeghi, L. Dijon, A. Laska, D. Koszelow","doi":"10.1007/s40831-024-00906-2","DOIUrl":"https://doi.org/10.1007/s40831-024-00906-2","url":null,"abstract":"Carburization is a critical aspect in the iron and steel industry as it significantly affects the mechanical and chemical properties of the final product. This study provides a comprehensive analysis of the carburization potential of high-grade quality iron ore pellets after direct reduction in pure hydrogen. The results show that the porosity of the pellets has a significant impact on the efficiency and success of the direct reduction process with hydrogen. The reduction process can be completed at a lower temperature in pure hydrogen compared to carbon monoxide, with the iron carbide concentration peaking at temperatures up to 500 °C before decreasing with further temperature increases. The uniform distribution of SiO2, Al2O3, and CaO is critical to the carburizing process and affects the final properties of the steel. An increased degree of metallization and porosity are associated with an improved carburizing tendency. This study highlights the intricate interplay between temperature, carbon sources, and the resulting equilibrium concentration of iron carbides and provides insights into the complex dynamics of this phenomenon.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17160,"journal":{"name":"Journal of Sustainable Metallurgy","volume":"15 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0