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·The effect of quick lime on pore characteristics of the high temperature zone in the iron ore sinter was studied XCT technology was applied to scan the sinter and the model of solid phase pore
Size degradation of iron ore sinter occurring on low temperature reduction causes an increase in the gas flow resistance at the shaft of the blast furnace and high temperature and crystallizing out abruptly at a temperature range of hematite crystallization in phase diagrams Inazumi et b incongruent melting of the calcium
·The present work provides information on the iron ores that form part of the mineral mix which once granulated is loaded onto the sinter strand where it is partially melted at a temperature of
·The basic characteristics of Australian iron ore concentrate Ore A and its effects on sinter properties during a high limonite sintering process were studied using micro sinter and sinter pot methods The results show that the Ore A exhibits good granulation properties strong liquid flow capability high bonding phase strength and crystal strength but
With increasing of temperature outside finer particles start to react with the air Chemical reaction of coke com bustion supplies the main heat to the sinter mix and raise the temperature of granule Iron ore particle starts to soften and liquid drops form at the surface of iron ore particle when the temperature exceeds the melting point
the interactions among different iron ores under high tem perature The index of interaction at high temperature INI is defined to characterize the interaction degree of sinter with the lump ore/pellet A higher INI indicates a higher the degree of interactions of sinter with acid materials at high temperature That formula is shown in Eq 2
·drove the flowing and bonding process of the liquid phase which aggregated ore particles and densified sinter body [21 23] Above parameters were affected by the chemical
·To reduce product variability iron ore sinter analogues were created from the mm fraction of an Australian iron ore Samples were fired under tightly controlled thermal and atmospheric
Until the 1950s of the last century the oxidized iron ores that were loaded into the blast furnace had granulometries within 10 and 120 mm However the depletion of high grade iron ore sources has made necessary the utilization of concentration processes with the purpose of enriching the iron ore Because of these processes a fine granulometry is produced and thus iron
Study of Softening and Melting Behaviour of Iron Ore Sinter and Pellets Volodymyr Shatokha1; and Olexandr Velychko1 1 National Metallurgical Academy of Ukraine Abstract High temperature process of viscous plastic flow of iron ore material under load resulting in bed shrinkage is a very complex phenomenon owing to heterogeneousness of
DOI / Corpus ID 239572942; Influence of quick lime on pore characteristics of high temperature zone in iron ore sinter based on XCT technology article{Zhou2021InfluenceOQ title={Influence of quick lime on pore characteristics of high temperature zone in iron ore sinter based on XCT technology} author={Hao Zhou and
·A blast furnace BF is the dominant process for making iron in the world The BF is charged with metallurgical coke and iron burden materials including iron ore pellets sinter and lump ore While descending in the BF the charge materials reduce The iron‐bearing materials should reduce fast and remain in the solid form until as high a temperature as
·ducted to achieve high quality sinter when a large amount of limonite is used in the sinter mixture [4 5] WU et al [6]pro posed the new concept of iron ore sinter ing basic characteristics and studied the high temperature behavior of limonite in the sintering process which reflected the liquid behavioral changes of iron ores to
·Various sinter microstructures were produced in the laboratory using the same iron ore blend varying only the sinter basicity and the carbon content of the blend via limestone and coke additions respectively The sinter cakes were subjected to low temperature size degradation tests and their structural composition was determined A relationship has been
importantly there is no granulation evaluation system similar to the high temperature basic sintering characteristics of iron ore 19 21 which has led to a large number of research results have not been able to provide effective guidance for the optimization of iron ore granulation in actual production
·The initial and final softening melting temperatures of redesigned iron ore agglomerates with basicities from to obtained under laboratory conditions were investigated
·Improving the quality of the sinter not only ensures smooth operation of the blast furnace but also reduces the fuel ratio and increases the molten iron yield 1 2 and the quality of the sinter
·Iron ore sinter is the main burden charged into the blast furnace The liquid phase formed during the sintering process plays an important role in the agglomeration process which affects the quality of the final product The current study aims to clarify the effect of iron ores on the high temperature characteristics of calcium ferrites CFs It was attempted to use
·Sinter plants process a mixture of iron ore fines recycled ironmaking products slag forming agents and solid fuel coke with the finality of obtaining a product with the suitable
·1 Introduction Iron ore sintering is an important hot agglomeration pre process for ironmaking in most integrated steel mills This process converts a mixture of ore fines fluxes return fines and plant dust to sinter by partial melting and re solidification of the granulated particles in a moving grate in which the coke breeze is typically used as solid fuel with mixing
·below the iron ore samples The iron ore samples are 10mm in diameter and the cokes are 10 mm in diameter Subject to the condition of constant layer thickness the charge of the iron ore samples weight different due to the difference of density The inner diameter of the graphite crucible is about 48 mm
·The sinter conveyor as shown is available with a pan width up to 3 000 mm and is able to transport up to 1 500 t/h With worldwide installations AUMUND is an expert for hot Fe Sinter transport Reference plants are in operation since many years in sinter plants in Germany Austria Brasil and Russia Sinter Plant Application
·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 existing in a BF
