Metallurgical Research & Technology最新文献

Distribution behavior and deportation of arsenic in copper top-blown smelting process 铜顶吹冶炼过程中砷的分布、行为及排出

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023065

Wenlei Jia, Bo Li, Shiwei Zhou, Yonggang Wei, Hua Wang

{"title":"Distribution behavior and deportation of arsenic in copper top-blown smelting process","authors":"Wenlei Jia, Bo Li, Shiwei Zhou, Yonggang Wei, Hua Wang","doi":"10.1051/metal/2023065","DOIUrl":"https://doi.org/10.1051/metal/2023065","url":null,"abstract":"In recent years, the impurity content in copper concentrate increases gradually with the consumption of high-grade copper ore. When the arsenic content in the raw materials increases, large amounts of arsenic enter the sulfuric acid system, resulting in large amounts of waste acid that put great pressure on production and environmental protection. Using the distribution characteristics of arsenic in each phase, the possibility of enriching arsenic in the form of stable arsenates in the slag was investigated to enrich arsenic in the form of stable arsenates in the slag. It is shown that increasing CaO content in slag at relatively low temperatures, controlling the slag type and changing the slag composition effectively improved the ability of the slag to absorb arsenic. Based on a theoretical analysis used to optimize the process parameters and determine a reasonable slag type, an oxygen-enriched top-blown smelting experiment was conducted with mixed copper concentrates. The mechanism of arsenic fixation in smelting slag at a smelting temperature of 1180 °C (1453 K) was investigated, and the results showed that the As content in slag was increased by 20∼50% and decreased by 10∼30% and 10∼20% in the dust and matte, respectively. Thus, arsenic is fixed in silicate in the form of stable arsenate, which can be an effective and safe treatment solution for copper smelting processes.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135495158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Prediction of hot metal temperature in a blast furnace iron making process using multivariate data analysis and machine learning methodology 利用多元数据分析和机器学习方法预测高炉炼铁过程中的铁水温度

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023073

Arun Kumar, Ashish Agrawal, Ashok Kumar, Sunil Kumar

{"title":"Prediction of hot metal temperature in a blast furnace iron making process using multivariate data analysis and machine learning methodology","authors":"Arun Kumar, Ashish Agrawal, Ashok Kumar, Sunil Kumar","doi":"10.1051/metal/2023073","DOIUrl":"https://doi.org/10.1051/metal/2023073","url":null,"abstract":"The feed-forward back propagation neural (FFBPN) network method and multivariate data analysis are used to present a new approach for predicting the health of a blast furnace in the form of hot metal temperature (HMT), which is a crucial parameter to control the stable flow of hot metal production while avoiding major danger incidents during the ironmaking process. The health status also appears to predict the performance level of BF at a premature time, allowing the operator to take necessary steps to avoid BF deterioration. The BF’s health status designates the stability or instability of the BF, which may arise during the manufacturing process of hot molten iron, and is used to find the fault. In this paper, the health status of BF was determined with the help of a FFBPN and correlation matrix. This was done with Matlab (Version 2018Rb) software that uses data pre-processing, variable reduction, and a selective attribute of a data set. The FFBPN model has been trained, tested, and validated, and it has got 96% correlation coefficient of HMT prediction of combination of all data sets. The predicted HMT using several actual process data sets has been helpful in identifying the process irregularity in BF.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135609066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Numerical study of influence of mould width on freestanding adjustable combination electromagnetic brake in continuous casting mould 结晶器宽度对连铸结晶器独立式可调组合电磁制动器影响的数值研究

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023066

Zhuang Li, Lintao Zhang, Engang Wang

引用次数: 0

Kinetics of static recrystallization in Sn-added Fe-Si alloys 添加锡铁硅合金的静态再结晶动力学

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023067

Myriam Dumont, Nikolas Mavrikakis, Wahib Saikaly, Dominique Mangelinck

引用次数: 0

The method of reducing energy consumption in large blast furnace smelting by increasing top pressure 介绍了提高炉顶压力降低大型高炉冶炼能耗的方法

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023071

Jian Chu, Yun Xu, Qinglin Chen, Nan Zhang, Bing Dai

引用次数: 0

Reaction behavior of high manganese and high aluminum steel with chromium-containing ladle filler sand 高锰高铝钢与含铬钢包填料砂的反应行为

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023072

Lingzhong Kong, Ming Kang, Ximin Zang, Shisen Li, Jie Yang

{"title":"Reaction behavior of high manganese and high aluminum steel with chromium-containing ladle filler sand","authors":"Lingzhong Kong, Ming Kang, Ximin Zang, Shisen Li, Jie Yang","doi":"10.1051/metal/2023072","DOIUrl":"https://doi.org/10.1051/metal/2023072","url":null,"abstract":"In order to understand the reaction mechanism of high manganese and high aluminum steel with ladle filler sand and improve the ladle free-opening rate, some laboratory experiments were carried out. The effect of [Mn] and [Al] contents in the steel and reaction time on the interfacial reaction of steel-sand were considered. The reaction mechanism between the steel and filler sand is as follows. Firstly, [Mn], [Fe]and [Al] in steel react with SiO 2 in filler sand to form a liquid phase dominated by MnO-Al 2 O 3 -SiO 2 -FeO. With the progress of the reaction, [Mn] and [Al] gradually reduce FeO, which leads to some metallic Fe being generated. Secondly, the liquid phase is further expanded, and solid phase (chromite phase) is dissolved into the liquid. At the same time, the Cr 2 O 3 in the liquid phase is reduced by [Al] in the steel. Finally, the liquid phase flows down by the gaps because of gravity, forming a sintered layer. In addition, both [Mn] and [Al] in steel can increase the liquid phase of filler sand, because the MnO and Al 2 O 3 of reaction products will lower the liquidous temperature, thus aggravating the sintering of filler sand.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135506014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Resource utilization of High-Ti vanadium titanomagnetite: Preparation and properties of sinter 高钛钒钛磁铁矿的资源利用:烧结矿的制备及性能

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023074

Zhenxing Xing, Gongjin Cheng, He Yang, Xiangxin Xue

{"title":"Resource utilization of High-Ti vanadium titanomagnetite: Preparation and properties of sinter","authors":"Zhenxing Xing, Gongjin Cheng, He Yang, Xiangxin Xue","doi":"10.1051/metal/2023074","DOIUrl":"https://doi.org/10.1051/metal/2023074","url":null,"abstract":"In order to achieve the goal of resource utilization of High-Ti vanadium titanomagnetite (High-Ti VTM), the high-temperature sintering characteristics of High-Ti VTM were investigated by micro-sintering experiments, while the effects of different ordinary iron ore dosage and basicity on the sintering process parameters and sinter quality were investigated by sintering pot experiments. The results showed that the TiO 2 and SiO 2 contents increased gradually with increasing dosage of High-Ti VTM, and the liquid phase fluidity index and binder phase strength increased gradually, while the assimilation temperature and intergranular consolidation strength showed a decreasing trend. With the increase of the dosage of ordinary iron ore, the vertical sintering speed was reduced, while the sinter yield and tumble index gradually increased. As the basicity of the sinter gradually increased, the sintering time and the pulverization degree of the sinter gradually increased and the sinter yield gradually decreased, while the vertical sintering speed and the tumble index both showed a trend of first increasing and then decreasing. The results of the study provide data to support the preparation of sinter with High-Ti VTM.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135609070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of slag properties and non-uniform bottom blowing gas supply mode on fluid flow and mixing behavior in converter 渣性质和不均匀底吹供气方式对转炉内流体流动和混合行为的影响

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023064

Zhao Liu, Shusen Cheng, Yong Liu, Pengbo Liu, Weiyang Zhang

{"title":"Effect of slag properties and non-uniform bottom blowing gas supply mode on fluid flow and mixing behavior in converter","authors":"Zhao Liu, Shusen Cheng, Yong Liu, Pengbo Liu, Weiyang Zhang","doi":"10.1051/metal/2023064","DOIUrl":"https://doi.org/10.1051/metal/2023064","url":null,"abstract":"Bottom blowing plays an important role in improving the physical and chemical reaction speed in the molten bath of combined blowing converter. In this paper, physical and numerical simulations were performed to study the influence of slag properties and non-uniform bottom blowing gas supply mode on flow and mixing behavior of molten bath in a 210 t converter. Compared with the two-phase case, the average velocity in the three-phase case is lower and the flow field is asymmetric. The increase of slag thickness, viscosity and surface tension will reduce the average velocity of the molten bath and make the mixing time longer. The numerical simulation of ten cases is carried out to study the effect of partial blockage of the tuyere on the overall mixing. The results showed that the existence of the central vortex and the long horizontal flow are beneficial to promote the overall mixing, while the central collision and the vortex at the edge play the opposite role in the non-uniform mode. The smaller flow difference between the tuyeres is unfavorable to the mixing of the molten bath. Reasonable tuyere flow difference can promote the horizontal flow of the molten bath and improving the stirring force.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135495607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Kinetic and mechanical properties of boronized AISI 1020 steel with Baybora-2 powder Baybora-2粉末渗硼AISI 1020钢的动力学和力学性能

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023069

Bünyamin Yamanel, Oguz Erdem, Salih Ugur Bayça, Osman Bican

{"title":"Kinetic and mechanical properties of boronized AISI 1020 steel with Baybora-2 powder","authors":"Bünyamin Yamanel, Oguz Erdem, Salih Ugur Bayça, Osman Bican","doi":"10.1051/metal/2023069","DOIUrl":"https://doi.org/10.1051/metal/2023069","url":null,"abstract":"In this study, package boronizing process was applied to AISI 1020 steel by using Baybora-2 boronizing agent and the kinetics of boronizing process was investigated. The pack boronizing process was performed at 1223 and 1323 K temperatures for 2, 4 and 6 h. The properties of the boride layer formed on the surface as a result of the boronizing process were determined using optical microscopy and SEM analysis. XRD analysis was performed to determine the phases formed in the boride layer. As a result of the analysis, it was determined that the boride layer consisted of FeB and Fe 2 B phases. It was determined that the thickness of the boride layer increased with the increase of boronizing time and temperature. While the boride layer thickness for the temperature of 1223 K was between 115 and 196.3 μm, the boride layer thickness for the temperature of 1323 K was found to be between 157.2 and 304.7 μm. In this study, a boriding powder, patented and under development, was used and a surface layer with a hardness of 2224 HV was obtained on the surface of AISI 1020 steel. This hardness value is approximately 5 times the hardness values of steels hardened by traditional surface hardening methods such as cementation and nitriding. Also, considering the boride layer thicknesses, the activation energy was calculated as 162.26 kJ/mol using the classical kinetic method.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135211332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Study on deterioration behavior of coke during gasification 焦炭在气化过程中的变质行为研究

4区材料科学

Metallurgical Research & Technology Pub Date : 2023-01-01 DOI: 10.1051/metal/2023078

Ji Wu, Cai Liang, Xiushi Gan, Minghui Xie, Zhe Jiang, Zhenxing Zhao, Xu Wang

引用次数: 0