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Mr ARUNKUMAR CHELLADURAI (Tata Steel), Mr SRINIVASA REDDY ASADI (Tata Steel)25/09/2018, 10:45SinteringOral PresentationTata Steel Kalinganagar is a green field 3MTPA integrated steel plant operating via the BF-BOF route. The sinter plant at Tata Steel Kalinganagar was commissioned in January 2016. The sintering machine area is 496m2 with state-of-the-art cooler design and advanced high intensity mixing-granulation systems. Among the challenges faced in the ramp up, two key issues that were of major concern in...Go to contribution page
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Mr Koji Osuga (Kobe Steel, Ltd.)25/09/2018, 11:05SinteringOral PresentationKakogawa Works of Kobe Steel, Ltd. has a set of sinter and pellet plants for the production of blast furnace raw materials. Recently, the use of magnetite fine ore has attracted attention while deterioration of iron ore grade. We clarified the problem of granulation and firing in using large quantity of magnetite fine ore, and developed countermeasures.Go to contribution page
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Dr Weidong Tang (Northeastern University)25/09/2018, 11:25SinteringOral PresentationThe influence of ordinary magnetite ratios on Hongge high-chromium vanadium-titanium magnetite (HCVTM) sinters was researched through sintering pot tests. The researches including yield, sintering ratio, tumbler index (TI), productivity, solid fuel consumption, reduction degradation index (RDI) and reduction index (RI) were tested and calculated. The addition of ordinary magnetite ore is an...Go to contribution page
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Prof. Maurรญcio Bagatini (Federal University of Minas Gerais)25/09/2018, 11:45SinteringOral PresentationIron and steelmaking industry is in demand to utilize ultra-fine iron ores due to changes in its availability and quality worldwide. Sintering plants are adapting to introduce higher ultra-fines percentage on their mixtures, raising concerns over the cold agglomeration step, critical to maintaining process stability and performance. Sintering bed permeability, granules mechanical properties...Go to contribution page
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Prof. Tom Honeyands (CIMR, Chemical Engineering, University of Newcastle, Australia)25/09/2018, 14:30SinteringOral PresentationSize segregation of the iron ore granules packed on a sinter strand has a significant influence on both airflow rate and temperature distribution through the bed. Therefore, it is a key factor that governs the efficiency of mass and heat transfer down the sinter bed. For a defined sinter feed and granule size distribution, it is possible to increase the size segregation through optimising the...Go to contribution page
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Mr Chengfeng Sun (Chongqing University)25/09/2018, 14:50SinteringOral PresentationThick bed technique has been widely used in the sintering plants , because it can save fuel consumption and achieve significant economic benefits. However, when the sintering bed height further increases, the cross-section shape would vary with respect to the nclination angle, and directly affect heat transfer inside sintering bed afterwards. After a two-dimensions(2D) mathematical model is...Go to contribution page
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Mr Tobin Harvey (The University of Newcastle Australia)25/09/2018, 15:10SinteringOral PresentationTypically a large proportion of the ferrous burden charged to the ironmaking blast furnace is iron ore sinter. The quality of iron ore sinter has a strong influence on the productivity and fuel efficiency of the furnace, therefore high quality sinter is desirable. Individual pieces of sinter product from industrial sinter strands and sinter pot test are variable in composition and structure....Go to contribution page
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Prof. Yoshiaki Kashiwaya (Kyoto University, Department of Energy Science and Technology)25/09/2018, 15:30SinteringOral PresentationA CaO-Fe2O3 system is a fundamental binary system for the iron ore sintering process. Although the basic reactions have been investigated since the 1960s, melting and solidification caused by the combustion of coke results in an unstable state owing to extreme temperature variations. In this study, using a hot thermocouple method, samples of 10% CaO-90%Fe2O3 and 20%CaO-80%Fe2O3 were melted on...Go to contribution page
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Mr Kohei Okada (Graduate School of Environmental Studies, Tohoku University, Sendai, Japan)25/09/2018, 16:15SinteringOral PresentationImprovement of sinter reducibility is necessary for high production rate of blast furnace, involving reduction of the slag component in the sinter. Replacement of peridotite (MgO-SiO2) for dolomite (CaMg(CO3)2) is a potent option as dolomite does not contain SiO2. However, dolomite is hard to assimilate and deteriorates sinter strength. In this study, assimilation behavior of dolomite has...Go to contribution page
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Mr Mingrui Yang (Chongqing Universituy)25/09/2018, 16:35SinteringOral PresentationThe wetting behavior of calcium ferrite (CF) slag on TiO2 substrate at 1523K was investigated using an improved sessile drop method. The initial apparent contact angle was 30ยฐ-50ยฐ, and the final apparent contact angle was less than 20ยฐ. The CF-TiO2 system is reactive wetting system, and the wetting process was divided into four stages. Stage I: physical spreading; stage II: reaction at the...Go to contribution page
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Mr Weili zhang (University of Science and Technology Beijing)25/09/2018, 16:55SinteringOral PresentationFlow and Occurrence of Magnesium in Sintered Products were studied by XRF and SEM-EDS. The results of this research are as follows. The figure shows magnesium content of sintered products in the following decreasing order: blast furnace return fine, sinter return fines, finished ore. Moreover, magnesium content in the 0.5mm-3.15mm size of blast furnace return fine is especially high. Magnesium...Go to contribution page
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Dr Reiko Murao (Nippon Steel & Sumitomo Metal Corporation)25/09/2018, 17:15SinteringOral PresentationIt is important to understand solidโliquid equilibrium of Al2O3-CaO-Fe2O3-SiO2 system to understand the sintering reaction, although the sintering reaction is a non-equilibrium and inhomogeneous. Phase equilibrium calculation of this system has some problems, such as thermodynamic models for some silico-ferrite of aluminum and calcium...Go to contribution page
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231. ESTABLISHEMENT OF NEW SINTERING REGIME FOR HIGH ALUMINA IRON ORE FINES AT TATA STEEL JAMSHEDPURMr Arunkumar CHELLADURAI (Tata Steel Ltd., Jamshedpur), Mr SRINIVASA REDDY ASADI (Tata Steel Ltd., Jamshedpur)26/09/2018, 09:00SinteringOral PresentationPellets were introduced into the Blast furnaces at Tata Steel Jamshedpur post the commissioning of pellet plant in the year 2012. The new burden mix (sinter, ore and pellet) offered an opportunity to produce sinter using a new flux regime which permitted flexibility in ore mix and resulted in change of sinter properties. A strategic decision was taken to produce pellets at acidic/minimum flux...Go to contribution page
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Mr Takahide Higuchi (JFE Steel Corporation)26/09/2018, 09:20SinteringOral PresentationThe qualities of iron ores have been deteriorating, which has influenced sinter quality and productivity adversely. In the sintering process, iron ore fines, fluxes such as limestone and coke breeze, are granulated, then charged and fired in a sinter machine. Sinter quality and productivity are strongly affected by the formation of initial sinter melt, assimilation and penetration into nucleus...Go to contribution page
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Mr Roland Meลพibrickรฝ (Technical university of Koลกice)26/09/2018, 09:40SinteringOral PresentationIn recent years, substituting a part of coke breeze with a biomass fuel in the sintering of iron ores has became an attractive research topic, which should help with the minimization of CO2 released from fossil fuels as well as searching for an alternative for coke in ironmaking. Besides the common process analyses, characterization of sinter properties through the mineralogical composition...Go to contribution page
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Dr Miyuki Hayashi (Tokyo Institute of Technology)26/09/2018, 10:00SinteringOral PresentationThe increment in the impurities of iron ore such as Al2O3 lowers the reducibility of iron ore sinter and increases the gas permeability resistance in a blast furnace. In order to overcome the problems, MgO is often added into sinter by blending dolomite and/or serpentine as a constituent of raw materials of sinters. The role of MgO in sinter at the lower part of a blast furnace depends on the...Go to contribution page
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Mr Yasuhide Yamaguchi (Nippon Steel & Sumitomo Metal Corporation)26/09/2018, 10:50SinteringOral PresentationIn order to decrease Reducing Agent Rate (RAR) and CO2 emission of blast furnaces, it is important to decrease slag volume. In NSSMC, more than 70% of blast furnace burden is sinter ore, so slag volume control is very important. However slag contents of sinter feeds are increasing because of resource deterioration. Therefore, using high amount of iron ore concentrate, which has relatively...Go to contribution page
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Mr Gabriel Steindorf (Department of Ferrous Metallurgy, RWTH Aachen University)26/09/2018, 11:10SinteringOral PresentationThe iron ore sintering process is essentially influenced by the permeability of the sinter bed. Higher amounts of ultra-fine iron ores lead to a weak granulation behaviour, which causes lower voidage in the sinter bed and therefore a decreasing bed permeability. Due to this, the application of ores with a size lower than 0.2 mm is limited. In this investigation the amount of ultra-fine ores...Go to contribution page
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Dr Liming Lu (CSIRO)26/09/2018, 11:30SinteringOral PresentationWith the rapid change in iron ore supplies and composition, steel mills now have to adjust the composition of the ore mixture to the sinter plant more frequently than ever before. Hence, different scales of test methods have been developed to help sinter plants evaluate new ore types and ore blends in order to optimise their ore mixtures and reduce raw material costs. However, iron ore...Go to contribution page
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Mr Acharyulu AVB (DGM (Process Optimization))26/09/2018, 11:50SinteringOral PresentationAcute crisis of water in the region compelled the usage of recycled water with high conductivity that helped in increasing granulation. However, usage of recycled water beyond 50% has resulted in undesired accretion in the Mixing and Nodulizing Drum. Magnetized water reduced contact angle and improved the granulation of green mix. The effect of magnetization of water was studied by varying...Go to contribution page
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Mr Mingshun ZHOU (Ansteel Group)26/09/2018, 13:30Blast furnace ironmakingOral PresentationFor raising sinter productivity and quality while reducing energy consumption and raw material cost, a new blending method has been created in Ansteel to optimise sintering blends. Traditionally the granulation of sintering blends in Ansteel has been adopted in disc pelletisers, which was recently found to be one of the causes to unstable blast furnace operation due to their low mixing...Go to contribution page
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Mr Debanik Mitra (Tata Steel)26/09/2018, 13:50SinteringOral PresentationTata Steel is the pioneer in steel industry of India. Production started way back in 1911. However, the first sinter plant (known as SP1) was commissioned in 1958. It was a modest beginning at first, with production of acid sinter. Tata Steel has been sintering captive iron ore fines having high alumina (above 4%) and silica (about 1%). This typically represents the Indian situation where most...Go to contribution page
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Mr SEUNGYEON WON (Hyundai Steel Company)26/09/2018, 14:10SinteringOral PresentationRecently, steel industry confronts a high risk of deterioration of Iron ore property as well as mitigation of green-house gas and particulate in response to the environmental regulation. For particular, iron ore sintering in the integrated steelmaking process generates a high level of particulate due to use of fine ore. It is impossible to recover energy through by-product gas like BFG and COG...Go to contribution page
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