International Ferro-Alloys Conference (INFACON XVI) 2021最新文献_第2页

Mix-Sintering Process of Manganese Ores and Its Effects on the Properties of Sinters 锰矿混合烧结工艺及其对烧结矿性能的影响

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3926224

Yuxian Han, Haijuan Wang, Guohong Deng, Longxing Wang, Zhanbing Yang

{"title":"Mix-Sintering Process of Manganese Ores and Its Effects on the Properties of Sinters","authors":"Yuxian Han, Haijuan Wang, Guohong Deng, Longxing Wang, Zhanbing Yang","doi":"10.2139/ssrn.3926224","DOIUrl":"https://doi.org/10.2139/ssrn.3926224","url":null,"abstract":"Direct use of manganese fines in the submerged arc furnace (SAF) will lead to the low permeability of the charge, essentially increase the consumption of coke and electric energy. In order to make better use of manganese fines as well as to save energy and cost in the industry, the sintering process of manganese ore is particularly important. In current study, three different Mn ores are selected to study the effect of ore proportion and basicity on the properties of sinters. Both small scale and pilot scale sintering experiments were carried out. Physical properties of the sinters at room temperature were examined and the sinters were also detected by X-ray diffraction (XRD) and optical microscope to investigate the mineral phase compositions and microstructures afterwards. The results showed that in the range of low basicity, the increase of basicity will make the strength of sinter deteriorate and the porosity decrease. Under the current experimental conditions, scheme 1 and scheme 4 with basicity of 0.7 are the better process parameters, which are applied for the pilot experiment in the sintering pot. And the pilot experimental results shown that the strength of sinter increases with the increase of carbon addition and 10% carbon addition is the optimal carbon content in the current study.","PeriodicalId":420761,"journal":{"name":"International Ferro-Alloys Conference (INFACON XVI) 2021","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129869404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Features of Regulation of the Electric Regime of Electro Arc Furnaces in the Production of Ferroalloys with High Silicon Content 高硅铁合金生产中电弧炉电态调节的特点

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3922145

B. Klocok, S. Kuzmenko, M. Suroviak, J. Lorinc, G. Denys

{"title":"Features of Regulation of the Electric Regime of Electro Arc Furnaces in the Production of Ferroalloys with High Silicon Content ","authors":"B. Klocok, S. Kuzmenko, M. Suroviak, J. Lorinc, G. Denys","doi":"10.2139/ssrn.3922145","DOIUrl":"https://doi.org/10.2139/ssrn.3922145","url":null,"abstract":"The OFZ introduced a control system for the electric mode of an ore-thermal furnace for the production of ferroalloys with a high silicon content. A distinctive feature of the system from traditional electric mode regulator is the presence of mathematical and software for determining the distribution of active power over characteristic zones of the near-electrode space (arc, shunt, melt). Rational distribution of power in the near-electrode space between the arc, shunt and melt ensures maximum furnace performance with minimum power consumption and allows optimizing the electrode bypass mode depending on the intensity of the arc process. The influence of the power distribution between the arc and the shunt on the specific power consumption in the production of FeSi75 is considered. The dependence of the specific power consumption and furnace productivity on the values of the power released in the arc and shunt zones has been revealed. The redistribution of active power in the near-electrode space between the arc and the shunt towards an increase in the arc power leads to a decrease in the specific power consumption and an increase in the furnace productivity. It is shown that traditional regulators are not able to provide optimal power consumption during FeSi75 smelting.","PeriodicalId":420761,"journal":{"name":"International Ferro-Alloys Conference (INFACON XVI) 2021","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pretreatment of Manganese Ore for Improved Energy Efficiency and Smelting Furnace Stability 锰矿石预处理提高能源效率和熔炼炉稳定性

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3926120

J. Hamuyuni, J. Saarenmaa, P. Mäkelä, Olli Pekkala, C. Binder, S. Rannantie, M. Lindgren

引用次数: 0

Investigation of Slag Compositions and Possible Relation to Furnace Operation of a FeSi75 Furnace FeSi75炉炉渣成分及其与炉膛运行关系的研究

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3930046

K. F. Jusnes, R. Hjelmseth, M. Folstad, N S Ditlefsen, M. Tangstad

{"title":"Investigation of Slag Compositions and Possible Relation to Furnace Operation of a FeSi75 Furnace","authors":"K. F. Jusnes, R. Hjelmseth, M. Folstad, N S Ditlefsen, M. Tangstad","doi":"10.2139/ssrn.3930046","DOIUrl":"https://doi.org/10.2139/ssrn.3930046","url":null,"abstract":"Slag samples from a submerged arc furnace producing FeSi75% have been collected, and the slag composition was determined using electron probe micro analyzer (EPMA). The samples were collected at the end of the tapping runner, at the top layer of the charge and from the electrode above charge level while the furnace was running or shortly after a stop (< 2 hours). The slag samples from the tapping runner mainly consisted of SiO2, Al2O3 and CaO. The viscosity of the samples was calculated and found to be between 1.9 to 6.6 poise at 1800 ˚C under normal tapping conditions. A slag sample that was reported to be from a visually high viscosity slag was found to contain double the amount of SiO2 compared to the other slag samples taken during normal tapping conditions. It was observed an indication of a correlation between the amount of CaO and increasing furnace power, while the amount of SiO2 in the slag indicated a decrease with increased furnace power. The amount of Al2O3 did not show a significant correlation with the furnace power. Samples from the electrode and the charge surface showed a slag phase consisting of mainly SiO2 and iron oxide. Some metal droplets were also observed on the electrode and the charge surface. This could either indicate a high temperature at the charge surface, or that material from further down in the furnace has been pushed upwards during operation.","PeriodicalId":420761,"journal":{"name":"International Ferro-Alloys Conference (INFACON XVI) 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131035194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Representation of the Multiphysical Properties of SiO2-Al2O3-CaO Slags by Deep Neural Networks 用深度神经网络表征SiO2-Al2O3-CaO渣的多物理性质

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3922182

S. Gouttebroze, Xiang Ma, K. Tang, C. van der Eijk

{"title":"Representation of the Multiphysical Properties of SiO2-Al2O3-CaO Slags by Deep Neural Networks","authors":"S. Gouttebroze, Xiang Ma, K. Tang, C. van der Eijk","doi":"10.2139/ssrn.3922182","DOIUrl":"https://doi.org/10.2139/ssrn.3922182","url":null,"abstract":"The hybrid analytics and modelling tool is one of the key techniques for the digital twin of industrial processes. Attempt for hybridization of the thermochemical and thermophysical properties of molten SiO2-Al2O3-CaO slags has been recently made at SINTEF Industry. The power of the deep neural networks for the multiphysical modelling of ferroalloy production will be demonstrated in the paper. A deep neural network has been set up for representing thermophysical (electronic conductivity, liquidus temperature, viscosity as well as density) and thermochemical (slag-metal equilibrium composition) properties of the SiO2-Al2O3-CaO system. The physics-based models were first used to model the density, conductivity and viscosity of molten SiO2-Al2O3-CaO slags. Liquidus temperature and metal-slag equilibrium data were calculated using the well-known thermochemical software package, FactSage. These physical models can be used as high-throughput calculation tools for the generation of industrial important labelled data. The DNN model can represent the above labelled metadata with a set of optimized parameters. The DNN model developed in the present study consists of 4 input variables (composition and temperature), 1 hidden layer and 5 output properties was used. The DNN model calculation can almost entirely reproduce all above properties using about 120 parameters. Furthermore, the DNN model can be automatically updated by continuously feeding the experimental data from the laboratory and industry (machine learning). This provides a sound basis for the development of the localized HAM tool for individual ferroalloy producers.","PeriodicalId":420761,"journal":{"name":"International Ferro-Alloys Conference (INFACON XVI) 2021","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125504499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conceptual Model Of Tapping Mechanisms In FeSi/Si Furnaces FeSi/Si炉出丝机理的概念模型

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3922189

M. Tangstad, E. Ringdalen, J. Olsen, K. Einarsrud, Edin Myrhaug, Q. Reynolds

{"title":"Conceptual Model Of Tapping Mechanisms In FeSi/Si Furnaces","authors":"M. Tangstad, E. Ringdalen, J. Olsen, K. Einarsrud, Edin Myrhaug, Q. Reynolds","doi":"10.2139/ssrn.3922189","DOIUrl":"https://doi.org/10.2139/ssrn.3922189","url":null,"abstract":"Tapping has mainly been an experience based sub-process in the silicon and ferrosilicon production process. To get this part of the process into a more scientific area, represented by e.g. CFD modelling, a conceptual model on the process is needed. This paper will hence start the work on describing some of the operational parameters that may link the furnace operation to the tapping process. The tapping process of a Si/FeSi furnace, that is the tapping rate, will be dependent on the zones and material in the furnace. The drainage of the furnace can be divided into 3 steps; Step 1 that describes the drainage from the back-electrodes to the tap-electrode, Step 2 that is the drainage in the near tap-hole region, and Step 3, the flow through the tap-hole. Each of these steps will be dependent on the zones and materials in the furnace. The flow from the back-electrodes (Step 1) will be determined by furnace gas pressure as well as high viscosity materials, as e.g. a slag layer, or SiC crusts, hindering the flow. Affecting the flow from the tap-electrode to the tap-hole (Step2), it is seen that the metal must drain through a slag zone filled with small SiC particles. Step 3 is dependent on the material in the entrance of the tap hole, in addition to the geometrical measures of the tap-hole as well as the density and to a lesser extent the viscosity.","PeriodicalId":420761,"journal":{"name":"International Ferro-Alloys Conference (INFACON XVI) 2021","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124796063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Redesign of Tap-Hole in Submerged Arc Furnace of HC-FeCr Production HC-FeCr生产埋弧炉出丝孔的重新设计

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3927151

Ozan Uylas, Y. Kaya, Emrah Bakir, A M Cevic, B. Genc

引用次数: 0

Reducing the CO2 Footprint from Simn Production by Optimization of Fluxes 通过优化助熔剂减少Simn生产过程中的二氧化碳足迹

International Ferro-Alloys Conference (INFACON XVI) 2021 Pub Date : 2021-09-12 DOI: 10.2139/ssrn.3926019

J. Davidsen

引用次数: 0