WEB1. Introduction. After the last commodities supercycle of iron ore, mining companies started to have as their main objective the fulfillment of ore quality goals and reduction of the variability of certain control parameters (such as the grade of iron, silica, manganese, and particle size range) without detriment to the production volume.
WhatsApp: +86 18838072829WEBMar 1, 2022 · The use of sinter influences hot metal production substantially and significantly affects an integrated steel mill's total emissions. Sintering of iron ores is an enormous energyintensive and resources consuming process. Introducing a selective waste gas recirculation (SWGR) to the sintering process reduces the energy .
WhatsApp: +86 18838072829WEBOct 1, 2019 · Based on the energy flow analysis of coking, sintering and blast furnace ironmaking process, Lingen Chen et al. [12] established an optimization model for iron ore matching, in which energy consumption, CO 2 emission and cost minimizations are taken as optimization objectives. Chengchi He et al. [13] established a sintering .
WhatsApp: +86 18838072829WEBSep 1, 2016 · Request PDF | Modeling and optimization method featuring multiple operating modes for improving carbon efficiency of iron ore sintering process | Iron ore sintering is one of the most energy ...
WhatsApp: +86 18838072829WEBFeb 17, 2023 · Intensifiion of the iron ore sintering process was approached by injecting hydrogenrich gas into the sinter bed. The loion of the injection was critical to the pyrolysis of the solid fuel, and the SOx and NOx emissions. ... An advanced analyticsbased hot metal silicon prediction and optimization model has also been successfully ...
WhatsApp: +86 18838072829WEBMar 1, 2021 · For this purpose, the operation process in mine of the Golgohar iron mine that produces three types of products (sizing, concentrate and pellet) for sales is used to model objective function.
WhatsApp: +86 18838072829WEBNov 16, 2011 · Many scholars have performed various researches on the reduction of blast furnace production cost [12–24]. Helle et al. [12] established an optimization model of blast furnace ironmaking process with biomass as auxiliary reductant for the blast furnace, and the production cost minimization was taken as the objective.
WhatsApp: +86 18838072829WEBFeb 28, 2018 · This model was validated by sintering pot test, the simulation results of bed temperature at different depth were very close to the detection results. The sintering pot test shows that the sinter yield and quality indices had little change after the optimisation of fuel distribution, while the solid fuel consumption was decreased by kg t ...
WhatsApp: +86 18838072829WEBJan 8, 2021 · In order to acquire the maximum gold recovery, the optimization of the proposed model was done by design expert software. Among 94 solutions for the optimization of the model, the results indied that the predicted maximum amount of % could be achieved with pH, M of NaCl, and M of Ca(OCl) 2 with .
WhatsApp: +86 18838072829WEBJan 1, 2022 · Turning to iron ore exports and imports, the tonnages are summarized in Table for 2012 and 2018 (Australian Department of Industry, Science, Energy and Resources, 2021; US Geological Survey, 2020; United National Conference on Trade and Development (UNCTAD), 2021).As shown in Fig., China is the largest iron ore .
WhatsApp: +86 18838072829WEBSep 17, 2020 · Abstract and Figures. Despite the age of the process, the blast furnace (BF) ironmaking is still crucial to iron and steel industry. To improve the competitiveness of enterprises, fuel ratio (FR ...
WhatsApp: +86 18838072829WEBNajor and Hagan (2006) used queuing theory to model the stochastic process of a shoveltruckplant system. It analysed idle time and predicted throughput. The numerical results demonstrated that the reduction of queuing could increase production by about 8 per cent. The preceding text has reviewed the optimization techniques used in mining.
WhatsApp: +86 18838072829WEBDec 1, 2008 · A mathematical model for a pilot scale induration furnace for ironore pellets has been presented by Kucukada et al. [15]. Cross and Blot [6] have used the induration process model to evaluate the suitability of the first drying zone with the updraft or downdraft gas flow streams.
WhatsApp: +86 18838072829WEBJul 1, 2023 · For this reason, a bottomup, technologyrich energy system optimization model (ESOM) will be used to investigate the effect of technology learning in the iron and steel sector. This decision can be also ascribed to the high energy intensity of the steelmaking processes, which causes their development to be strongly interconnected .
WhatsApp: +86 18838072829WEBOct 1, 2013 · Liu et al. [7] proposed an model by LP, which solved the problems of ore blending in iron mines and problems in ore quality control. Boland et al. [8] solved the openpit mining production ...
WhatsApp: +86 18838072829WEBSep 1, 2021 · Section snippets Outline of sintering process. Iron ore sinter is an ordinarily utilized ironbearing burden in BF ironmaking unit. The sintering agglomeration procedure aims to form high strength sinter including granulating of the mixed materials, distributing the granulated materials and then igniting the fuels (coke or coal), sintering the iron .
WhatsApp: +86 18838072829WEBJul 7, 2021 · The total iron concentration decreased rapidly during the first 3 h of leaching and then plateaued (Figure Figure5 5). This change was driven by the reduction of Fe 3+ to Fe 2+ early in the leaching process. One hypothesis is that when the ore was added to the solution, the pH rapidly increased to around 4, and iron precipitated as Fe(OH) 3 ...
WhatsApp: +86 18838072829WEBAug 21, 2023 · The accuracy and rapidity of total iron content (TFE) analysis can accelerate iron ore production. Although the conventional TFE detection methods are accurate, its detection speed presents difficulties in meeting production requirements. Therefore, this paper proposes a method of TFE detection based on reflectance .
WhatsApp: +86 18838072829WEBFeb 13, 2011 · An oreblending optimization model for the sintering process is an intelligent system that includes iron ore characteristics, expert knowledge and material balance. In the present work, 14 indices are proposed to represent chemical composition, granulating properties and high temperature properties of iron ores. After the .
WhatsApp: +86 18838072829WEBAug 1, 2022 · Mathematical modeling and distribution characteristics evaluation of fuel particles in iron ore sintering process. Author links open overlay panel ... [20] applied the numerical simulation model to obtain a reasonable average fuel ratio of the sintering beds based on its heat demand or the maximum temperature, without considering the ...
WhatsApp: +86 18838072829WEBMar 6, 2024 · Proportioning is an important part of sintering, as it affects the cost of sintering and the quality of sintered ore. To address the problems posed by the complex raw material information and numerous constraints in the sintering process, a multiobjective optimisation model for sintering proportioning was established, which takes the .
WhatsApp: +86 18838072829WEBDec 1, 2018 · The thermal state parameter (TS) is put forward to describe the stability of sintering state, and the evaluation model based on random forest algorithm was built. The novel softmeasuring models realizes the transparency of sintering bed and they have great significance for improving the optimal control of sintering. 2.
WhatsApp: +86 18838072829WEBJan 31, 2014 · An optimization model for the fuel distribution of the material layer with mechanism models and algorithms is presented, which can reduce the fuel ratio of ore blending and enhance the fuel ...
WhatsApp: +86 18838072829WEBAug 1, 2022 · The mixture in the granulation experiment is composed of fine ores, concentrates, coke breeze, returns and quicklime. The mixing scheme is listed in Table, when the blend is dominated by hematite, the coke powder content is less than 5%, and the coke powder content is raised with the addition of limonite. in this work, the .
WhatsApp: +86 18838072829WEBJan 1, 2014 · The quality of the iron ore pell et in the pelletizing process is directly rel ated to the a mount of fines in the product. According to this particularity o f the process and considering the ore ...
WhatsApp: +86 18838072829WEBJ Iron Steel Res Int 19(6):15 Google Scholar Cross Ref; Zhou M, Jiang T, Yang ST, Xue XX (2015) Vanadiumtitanium magnetite ore blend optimization for sinter strength based on iron ore basic characteristics. Int J Miner Process 142:125133 Google Scholar Cross Ref; Arbeithuber C, Jorgl HP, Raml H (1995) Fuzzy control of an iron ore ...
WhatsApp: +86 18838072829