Effect of Temperature, Time, and Cooling Rate on the …

The primary hematite content of the analogues generally decreases with increasing maximum temperature and hold time, as more assimilation of the iron ore particles …

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New approach to improve heat energy utilization efficiency in iron ore …

New approach to improve heat energy utilization efficiency in iron ore sintering: Exploration of surface fuel addition. Author links open overlay ... Obviously, with the increase of the proportion of surface fuel, the sintering temperature of layer-1 and layer-2 is significantly increased, and the melt holding time is also significantly longer ...

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(PDF) Iron Ore Sintering: Process

Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents and solid fuel (coke).

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Effect of ore types on high temperature sintering …

Differential scanning and high temperature reaction calorimetry have been used to characterize a series of natural iron ore and flux samples commonly used during iron ore sintering. Most iron ore ...

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Effect of biochar substitution on iron ore sintering …

The sintering temperature curve and temperature index after delamination is shown in Fig. 8, Fig. 9. Download: Download high-res image (270KB) ... In the iron ore sintering field, the yield, productivity and tumbler index (TI) is commonly used to characterize the sinter quality [19]. The yield (%) is the proportion of the mass of the …

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Characteristics of Conventional and Microwave Sintered Iron Ore …

A survey revealed that iron ore powder is sintered at a high temperature. Sintering is a pre-treatment process during iron making, and it is used to produce nodules of iron blended with small quantities of other minerals. Several studies on microwave sintering of powdered ore have been performed; however research on microwave …

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Combustion behavior of granulated coke breeze in iron ore sintering

Introduction. Iron ore sintering is a very important process which produces sinter as a major burden for blast furnace ironmaking. In this process, iron ore and auxiliary materials, e.g., fluxes, unqualified sinter (called return fine), and coke breeze, are mixed, granulated and then sintered at high temperatures.

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Influence of coke rate on thermal treatment of waste …

Five schemes are designed to investigate the influence of coke rate on thermal treatment of waste SCR catalyst in iron ore sintering. Table 3 gives the detailed ore blend proportion, sinter condition, and experimental schemes. The basicity and the mass fraction of MgO are adjusted to 1.9 and 1.7% (mass) to meet the fluidity …

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(PDF) Mathematical modelling of iron ore sintering process …

Keywords: Iron ore sintering, Mathematical modelling, Genetic algorithm, Energy and mass balance, Optimisation of operating parameters List of symbols frequency factor for carbon combustion rate equation (1/s) C concentration of coke in the bed, kg m–3 Cpg specific heat of sintering gas, J kg–1 K–1 Cps specific heat of solid sinter, J kg ...

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Basics of Iron Ore Sintering

In case of chromite, the temperature required for sintering is about 200 0 C more than that required for iron ore sintering. The process conditions for manganese ore sintering are almost similar to that for iron ore. The author has actively contributed to projects for setting up of batch type (capacity 15000 tpa) sinter plants at industry site.

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Prediction of sinter yield and strength in iron ore sintering …

Iron ore sintering is a complicated thermo-chemical process which involves a vast amount of chemical reactions and physical changes. ... It can be seen that the temperatures of two-layer sintering are higher at the height of y = 300 mm while the temperatures are close at the height of y = 500 mm. Due to higher coke content in the …

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Numerical Simulation of Heat and Mass Transfer …

Iron ore sintering refers to the process of mixing iron ore, fuel, flux, and iron-containing waste produced in the ironmaking and steelmaking process in a certain proportion, and then the fuel is burned …

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Effect of Silica Content on Iron Ore Sintering

During the iron ore sintering process, its SiO2 content considerably affects the sinter quality. In this study, the effect of SiO2 content on iron ore sintering indexes was studied, with mineral composition and microstructure analyses. It was shown that the strength and reducibility of sintering products improved when SiO2 content increased. …

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Ore-blending optimization for Canadian iron concentrate during iron ore

Canadian iron concentrate (CIC) can elevate the ferrous grade and lower the contents of gangue components and harmful elements in the sinter. To understand high-temperature characteristics of CIC and typical iron ore, the formation of the melt was calculated mainly through FactSage 7.2, and melt fluidity (MF) test for iron ore fines and …

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Inhibition Mechanism of H2O on CO Oxidation Over …

Water is an essential component of iron ore sintering raw materials. Under high-temperature conditions, water eventually exists in the sintering gas as vapour, typically with a volume fraction of 10%. To analyze the performance of MnCeO x catalysts in actual flue gas, the H 2 O resistance of M 1 C 1, M 4 C 1, and M 8 C 1 was tested. The ...

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Effect of increasing the proportion of high-alumina iron ore …

It is well known that the sintering temperature of iron ore is the same as the second stage ranging from 1240 °C to 1340 °C in the actual sintering process, the maximum of liquid phase volume is around 50%, which is in agreement with that given in the literature. 33 In addition, the liquid volume increases with increasing temperature ...

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Influence of quick lime on pore characteristics of high-temperature

The iron ore sintering experiment is carried out on the pilot-scale sinter pot system, as shown in Fig. 1.There are 5 pressure measuring points located at 100 mm, 200 mm, 300 mm, 400 mm, 500 mm from top to bottom of the pot to record the pressure value in real-time online.

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Coke breeze combustion and emission behaviors of CO and NO during iron

In iron ore sintering process, as shown in Fig. 1, iron ores are aggregated into sinter at high temperature, and gas pollutants are discharged with flue gas after terminal emissions reduction such as dust removal, desulfurization and denitrification.To investigate the influences of raw materials, the most common raw materials in sinter plants were …

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Resource utilization of municipal solid waste incineration fly …

Iron ore sintering is a high temperature process during which fine particles were agglomerated. As the most significant factors, the quality and yield of sintering are directly reflected through sintering indexes. Therefore, whether the addition of this ultra-fine particles, MSWI fly ash, would affect the sintering indexes should be researched. ...

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A clean disposal method of carbide slag with carbon …

1. Introduction. Sintering is a widely used iron ore agglomeration method worldwide to produce qualified charged materials for blast furnaces (Angalakuditi et al., 2021).More than 70% of the raw materials of blast furnaces are sinter in China, the country with the largest crude steel output in the world (Zhou, Xu, et al., 2018).Iron ores, fuels …

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Basics of Iron Ore Sintering

In case of chromite, the temperature required for sintering is about 200 0 C more than that required for iron ore sintering. The process conditions for manganese …

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Effect of Temperature, Time, and Cooling Rate on the …

The primary hematite content of the analogues generally decreases with increasing maximum temperature and hold time, as more assimilation of the iron ore particles occurs into the calcium ferrite melt.31 Primary hematite is replaced with secondary hematite and SFCA at a temperature of 1285°C, and with secondary hematite, SFCA (columnar) and ...

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The Sintering Process of Iron Ore Fines

The Sintering Process of Iron Ore Fines. satyendra; March 9, 2013; ... (cooling period beginning). The maximum temperature which reaches in this zone is in the range of 1300 deg C to 1400 deg C. The main processes which happen in this zone are (i) coke combustion (exothermic), (ii) carbonates decomposition (endothermic), (iii) solid …

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Iron ore sintering | Request PDF

Differential scanning and high temperature reaction calorimetry have been used to characterize a series of natural iron ore and flux samples commonly used during iron ore sintering. Most iron ore ...

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Application of deep learning in iron ore sintering process: a …

The sintering process is an intricate system with a protracted process flow. The steps in the manufacturing line are primarily composed of the ingredients and mixing process, the sintering operation process, and the treatment of the sintered ore [39, 40].2.2 Important parameters and characteristics of sintering process. As shown in Fig. 2, all …

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Soft-measuring models of thermal state in iron ore sintering process

Thermal state of iron ore sintering in iron and steel production cannot be revealed straightforward, which is unfavorable for field operations. ... Sintering is a high-temperature reaction process, and it belongs to a semi-closed system. To obtain the thermal parameters inside sintering bed, numerical simulation [3] ...

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Effect of increasing the proportion of high-alumina iron ore …

It is well known that the sintering temperature of iron ore is the same as the second stage ranging from 1240 °C to 1340 °C in the actual sintering process, the …

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Iron ore sintering

At sintering temperature (∼1300°C), Al 2 O 3 and MgO have a more profound effect on viscosity than SiO 2. The rapid increase in viscosity in Fig. 15.10 is most likely related to the precipitation of solid phases. ... The MEBIOS (mosaic embedding iron ore sintering) process was therefore proposed as part of an Iron and Steel Institute of ...

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Iron ore sintering

Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm …

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Model of an iron ore sinter plant with selective waste gas

With iron ore sintering, iron fines are utilizable for pig iron production. The sintering process is influenced extensively by the properties of the input material and process conditions. ... It is the most exothermic reaction of the sintering process. Due to temperatures above 1100°C, solids are melting without reaching the point of ...

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Sinter Quality and Process of Sintering Iron Ores – IspatGuru

Fig 1 Schematics of sinter mix and product sinter Sintering process is a generic term that is used to describe the process of agglomeration of a green mix of iron ores, fluxes and coke and plant solid wastes having a particle size of -10 mm so as to produce sinter which can withstand operating pressure and temperature conditions …

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Analogue iron ore sinter tablet structure using high resolution X-ray

Early uses of this technique for iron ore sintering focused on the formation of the sinter cake structure [[13], ... Analogue sinter tablets were scanned using HRXCT to understand how ore type, maximum sintering temperature and pO 2 affect the structure of the product sinter. Maximum sintering temperature is known to have a strong influence …

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Formation of Calcium Ferrite Containing …

Calcium ferrite containing aluminum (CFA) is a precursor of the low-temperature bonding phase in the sintering process of iron ore fines for blast furnace ironmaking. Thus, improving the formation of CFA …

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