{"title":"使用生物质还原剂在微波炉中从铁精矿中提取铁块的特性分析","authors":"M. Boyrazlı, Elif Aranci Öztürk, Yunus Emre Benkli, Canan Aksu Canbay","doi":"10.3989/revmetalm.250","DOIUrl":null,"url":null,"abstract":"This study is concerned with the characterization of iron nuggets obtained from the reduction of an iron oxide concentrate in a microwave oven using a biomass-based reducing agent. In the experiments, the concentrate of iron ore consisting of hematite and magnetite minerals supplied from Elazig region and containing 67.29% Fe after enrichment, and as a reducing agent, tea plant wastes containing 94.68% C and 0.03% S after carbonization was used. Carbon required for the reduction of iron oxides to iron was stoichiometrically added to the concentrate with a grain size of -45 µm after its basicity ratio was adjusted. The composite pellets produced after the addition of reducing agent and flux (CaO) were subjected to reduction in a household microwave oven at different times. After the process, optimum (Fe3O4+Fe2O3)/C=1/4, basicity ratio (CaO+MgO)/(SiO2+Al2O3) =1.2 results were obtained. It was seen that the metallic part contained 96.6% Fe, 2.4% C after being separated from the slag and that the metallic phase was separated from the slag very easily. As a result of the microstructure investigations, it was found that the product obtained had similar properties to white cast iron properties.","PeriodicalId":21206,"journal":{"name":"Revista De Metalurgia","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Characterization of iron nugget produced from iron ore concentrate in a microwave oven using a biomass-based reductant\",\"authors\":\"M. Boyrazlı, Elif Aranci Öztürk, Yunus Emre Benkli, Canan Aksu Canbay\",\"doi\":\"10.3989/revmetalm.250\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study is concerned with the characterization of iron nuggets obtained from the reduction of an iron oxide concentrate in a microwave oven using a biomass-based reducing agent. In the experiments, the concentrate of iron ore consisting of hematite and magnetite minerals supplied from Elazig region and containing 67.29% Fe after enrichment, and as a reducing agent, tea plant wastes containing 94.68% C and 0.03% S after carbonization was used. Carbon required for the reduction of iron oxides to iron was stoichiometrically added to the concentrate with a grain size of -45 µm after its basicity ratio was adjusted. The composite pellets produced after the addition of reducing agent and flux (CaO) were subjected to reduction in a household microwave oven at different times. After the process, optimum (Fe3O4+Fe2O3)/C=1/4, basicity ratio (CaO+MgO)/(SiO2+Al2O3) =1.2 results were obtained. It was seen that the metallic part contained 96.6% Fe, 2.4% C after being separated from the slag and that the metallic phase was separated from the slag very easily. As a result of the microstructure investigations, it was found that the product obtained had similar properties to white cast iron properties.\",\"PeriodicalId\":21206,\"journal\":{\"name\":\"Revista De Metalurgia\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-01-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Revista De Metalurgia\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.3989/revmetalm.250\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista De Metalurgia","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.3989/revmetalm.250","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
摘要
本研究涉及使用生物质还原剂在微波炉中还原氧化铁精矿所得到的铁块的特征。在实验中,使用了来自埃拉泽格地区的由赤铁矿和磁铁矿矿物组成的铁矿精矿,富集后含铁 67.29%;作为还原剂,使用了碳化后含 C 94.68% 和 S 0.03% 的茶树废料。将铁氧化物还原成铁所需的碳按比例添加到粒度为 -45 µm 的浓缩物中,然后调整其碱度比。添加还原剂和助熔剂(氧化钙)后产生的复合球团在家用微波炉中进行不同时间的还原。经过这一过程后,得到了最佳(Fe3O4+Fe2O3)/C=1/4,碱度比(CaO+MgO)/(SiO2+Al2O3)=1.2 的结果。结果表明,从炉渣中分离出来的金属部分含有 96.6% 的 Fe 和 2.4% 的 C,而且金属相很容易从炉渣中分离出来。微观结构研究结果表明,获得的产品具有与白口铸铁相似的特性。
Characterization of iron nugget produced from iron ore concentrate in a microwave oven using a biomass-based reductant
This study is concerned with the characterization of iron nuggets obtained from the reduction of an iron oxide concentrate in a microwave oven using a biomass-based reducing agent. In the experiments, the concentrate of iron ore consisting of hematite and magnetite minerals supplied from Elazig region and containing 67.29% Fe after enrichment, and as a reducing agent, tea plant wastes containing 94.68% C and 0.03% S after carbonization was used. Carbon required for the reduction of iron oxides to iron was stoichiometrically added to the concentrate with a grain size of -45 µm after its basicity ratio was adjusted. The composite pellets produced after the addition of reducing agent and flux (CaO) were subjected to reduction in a household microwave oven at different times. After the process, optimum (Fe3O4+Fe2O3)/C=1/4, basicity ratio (CaO+MgO)/(SiO2+Al2O3) =1.2 results were obtained. It was seen that the metallic part contained 96.6% Fe, 2.4% C after being separated from the slag and that the metallic phase was separated from the slag very easily. As a result of the microstructure investigations, it was found that the product obtained had similar properties to white cast iron properties.
期刊介绍:
Revista de Metalurgia is a bimonhly publication. Since 1998 Revista de Metalurgia and Revista Soldadura have been combined in a single publicación that conserves the name Revista de Metalurgia but also includes welding and cutting topics. Revista de Metalurgia is cited since 1997 in the ISI"s Journal of Citation Reports (JCR) Science Edition, and in SCOPUS.