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2015-11-1 Cooling process of iron ore pellets in a circular cooler has great impacts on the pellet quality and systematic energy exploitation. However, multi-variables and non-visualization of this gray system is unfavorable to efficient production. Thus, the cooling process of iron ore pellets was optimized using mathematical model and data mining ...

Get PriceEmail contactConclusions(1) A 3-D model for the pellet cooling process in a cooler has been developed, and a field test was systematically car- ried out on a cooler in China. The maximum relative errors of temperature, pressure, and velocity are 2.87%, −8.11%, and 7.14%, respectively, indicating the validity of the model.(2) The flow and pressure fields ...

Get PriceEmail contact2011-5-29 A 3-D mathematical model was presented for the cooling process of iron ore pellets based on the laws of mass, momentum, and heat transfer. The flow, pressure, and temperature fields were obtained by numerical simulation with the commercial software FLUENT. In order to verify the model, a mass and energy balance field test was systematically carried out on an annular cooler in Shougang

Get PriceEmail contactA 3-D mathematical model was presented for the cooling process of iron ore pellets based on the laws of mass, momentum, and heat transfer. The flow, pressure, and temperature fields were obtained ...

Get PriceEmail contactIn this article, we show how a thermokinetic model of pellet induration, validated against operating data from one of the Iron Ore Company of Canada (IOCC) lines in Canada, can be exploited in ...

Get PriceEmail contact2008-12-1 Hamidi and Payab have presented a mathematical model for pilot-scale iron ore induration furnace and have determined energy savings by coke addition to the pellet and oxygen injection to the furnace. Pomerleau et al. [16] have used a mathematical model for optimization of the operating conditions in a straight grate furnace.

Get PriceEmail contact2010-8-20 made from iron ore, there is only slight change of temperature within the pellet, see Fig. 2. 2.4. Evaporation The drying of iron ore pellets causes evaporation of water from the inner part of the pellets. This requires additional amount of heat and further increase of temperature is slow or even cooling is possible if dry input air is used.

Get PriceEmail contactAfter cooling. of indurated pellets ... (Model: H 10K-S ... To produce good quality of pellets certain additives are important and limestone is employed for modifying the pellet basicity. Iron ore ...

Get PriceEmail contact2021-2-8 In this study, a one-dimensional generic model capable of being integrated with reactor scale models is proposed for a single pellet through solving the transient differential conservation equations. Predicted results comparison with the experimental data showed close agreement. In addition, the model was used to investigate the relevance of physical characteristics of pellet, reacting gas ...

Get PriceEmail contactHerein, the reducibility of the iron ore pellet, sinter, and lump ore in the BF shaft are focused on. The experiments are conducted isothermally with a blast furnace simulator (BFS) high‐temperature furnace at four different temperatures (700, 800, 900, and 1000 °C) for 300 min.

Get PriceEmail contactA model with properties similar to that of an iron ore pellet is numerically investigated and with interface heat transfer condition provided by CFD, the simulations show an increased heating rate for the porous cylinder when compared to a solid.

Get PriceEmail contact2018-6-17 In this work, a mathematical model of the pilot scale iron ore pellet induration furnace is presented. The validity of the model has been verified by performing separate experiments of subprocesses: drying, firing and cooling. The experiments were performed in such a way that the phenomena of heat transfer, drying and coke combustion could be ...

Get PriceEmail contact2019-9-4 to consider CO-H2-CH4 reducing gas, and accounted for transition and cooling sections. The present model, named REDUCTOR, is 2-dimensional in the steady-state regime. The model includes a sophisticated, pellet sub-model. We consider eight heterogeneous and

Get PriceEmail contact2016-9-30 The derived model can be applied to a number of numerical set-ups such as a single pellet in infinite space. Paper C Fluid flow and heat transfer within and around a porous iron ore pellet placed in infinite space The forced convective heating of a porous cylinder with properties similar to an iron ore pellet is here numerically investigated.

Get PriceEmail contactiron ore pellet cooling model – beltconveyers. Mathematical model grate-kiln-cooler process iron ore pellets – OneMine Mining and Minerals Library search results. Cooling process of iron ore pellets in an annular cooler. »More detailed

Get PriceEmail contactIron ore green balls are soft and easy to break. So after the pelletizing and screening operations, iron ore pellets have to be hardened in a furnace through a firing process. Once fired, they can be handled, loaded in ships or trains and delivered to the end users.

Get PriceEmail contact2019-9-4 11 Abstract: This paper addresses the modeling of the iron ore direct reduction process in the context 12 of the reduction in CO2 emissions from the steel industry. The shaft furnace is divided into three 13 sections (reduction, transition, and cooling), and the model is two-dimensional (cylindrical

Get PriceEmail contact2020-2-2 8 mm. HPS feed consists of iron ore as pellet feed fines, return fines and iron and steel work remnants, filter dust, additives and binders like limestone, dolomite, bentonite and coal dust. These micro pellets are fed onto a sinter machine to produce sinter cake,

Get PriceEmail contactAccording to the fitted images, the speed limit factors in the iron ore pellet reaction model are analyzed completely. In this paper, a pellet decomposition model was established to try to determine the kinetic and thermodynamic parameters of the pellet reaction without the need for experimentation, to simulate the reduction of pellets, and to ...

Get PriceEmail contact2011-3-13 shift reaction are taken into account in the model. 2.ReactorModeling Iron ore reactor is a moving bed reactor to produce sponge iron product from iron ore. Gas and solid phases are passed in counter current. In general, sponge ore reactor is divided by3zones,whicharereferredtoasreduction,isobaric, and cooling zones. The simple scheme of iron ...

Get PriceEmail contact2019-9-4 to consider CO-H2-CH4 reducing gas, and accounted for transition and cooling sections. The present model, named REDUCTOR, is 2-dimensional in the steady-state regime. The model includes a sophisticated, pellet sub-model. We consider eight heterogeneous and

Get PriceEmail contact2017-6-9 IMPROVING REDUCIBILITY OF IRON ORE PELLETS BY OPTIMIZATION OF PHYSICAL PARAMETERS J. Pal a*, S. Ghorai a, A. Ammasi a, S.K. Hota b, V.M. Koranne b, T. Venugopalan b a CSIR-National Metallurgical Laboratory, Jamshedpur, India b Tata Steel Ltd., Jamshedpur, India (Received 06 December 2015; accepted 27 April 2016)

Get PriceEmail contactiron ore pellet cooling model – beltconveyers. Mathematical model grate-kiln-cooler process iron ore pellets – OneMine Mining and Minerals Library search results. Cooling process of iron ore pellets in an annular cooler. »More detailed

Get PriceEmail contactTo further develop a single pellet model, forced convective heating of a porous media with surrounding flow field taken into account must first be examined. Therefore, a two dimensional model with properties similar to that of an iron ore pellet is numerically investigated.

Get PriceEmail contact2019-9-1 Iron reactor is a counter current reactor to produce sponge-iron from iron ore. In RZ, some chemical reactions occurred between reduction-gas and iron ore pellet. The reactions extract iron metal from the ore to produce reduced-iron. The reduced-iron is cooled in the CZ after passing through the IZ.

Get PriceEmail contact2011-3-13 shift reaction are taken into account in the model. 2.ReactorModeling Iron ore reactor is a moving bed reactor to produce sponge iron product from iron ore. Gas and solid phases are passed in counter current. In general, sponge ore reactor is divided by3zones,whicharereferredtoasreduction,isobaric, and cooling zones. The simple scheme of iron ...

Get PriceEmail contactBased on Figure 3(a), the increase in input temperature of solid (reduced-iron) at 0 m depth of IZ and CZ need higher cooling-gas to keep the temperature of product (reduced-iron output) about 330 K. An increase in reducediron input temperature to 1200 K needs flow rate of coolinggas about 64000 NCMH.

Get PriceEmail contact2013-12-9 Brazil iron ore mine Austrian steel production sites in Linz and Donawitz Iron ore pellet HBI The decision on the construction of the Voestalpine direct reduction plant in North America has been made. The plant will be constructed on just outside the city of Corpus Christi, Texas, USA. The planned facilities are designed for an

Get PriceEmail contactThe pelletizing plant includes drying and grinding, mixing, green pelletizing, pellet induration section and pellet screening section. In induration section, the indurating hood is the main part of a pelletizing plant for iron-ore fines. It serves for drying, heating and cooling of the pellets.

Get PriceEmail contact2020-10-14 Integrated steelmaking is known to emit coarse airborne ‘nuisance’ dust (10–100 µm) to the production site and in the local environs. We present a method to quantitatively analyse the provenance, mineralogical and chemical attributes of the constituent particles in nuisance dust related to the integrated steelworks of Tata Steel, IJmuiden, the Netherlands.

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