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·the sinter and aect the performance of the sinter plant [8 ] In the present investigation an attempt was made to understand the inuence of these pellet nes on the sinter ing process Lab scale trials were conducted using a pot sin ter setup by varying the pellet nes from 0 to 50% in the iron ore blend to understand the extent upto which
·This research work focuses on the reduction behavior of iron ore pellets sinter and lump ore in simulated BF shaft conditions where H 2 and H 2 O are present in typical CO CO 2 N 2 atmospheres 2 Experimental Section Sinter lump ore and iron ore pellets were used in experiments The composition for all three materials is shown in Table 1
·Pellets are one of the principal raw materials of blast furnaces 1 2 3 and have the advantages of high total iron content less gangue content high compressive strength and uniform particle size 4 Compared with sinter production pellets have lower energy consumption and produce less pollution When 100% pellets are used for ironmaking the fuel ratio
·sinter in blast furnaces is increasing day by day to The green pellets were sintered in the resistance heating furnace maintaining temperature at 1200 °C for 120 minutes Then the fired
·A low MgO content in sinter is conducive to reduce the MgO content in blast furnace slag This study investigated the effect of MgO content in sinter on the softening—melting behavior of the mixed burden based on fluxed pellets When the MgO content increased from % to % the melting temperature of sinter increased to 1521°C Such an increase
·Materials Three imported iron ore concentrates named GSF # H # and M # collected from Zhanjiang pelletizing plant Zhanjiang China were tested for GSF # a sinter feed which is coarse grained was beforehand wet ground for pellet quality bentonite B # was used as the blinder for improving the
· Iron Ore Replacement by Pellet The iron ore being a fully dense material is deficient in porosity which makes it impermeable to the gas flow This deteriorates the reducibility of iron ore as compared to sinter and pellet a typical chemistry of iron ore and pellet is shown in Table 1 whose reducibility is higher than iron present work is aimed at
·Under the conditions of China s resource characteristics if we want to further increase the proportion of blast furnace pellets in the furnace it is not feasible to continue to use the furnace charge structure of high basicity sinters with high silica acid pellets The use of high basicity sinter with high silica fluxed pellet is the
·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 possible to ensure reaction contact with reducing gas and iron
·sinter return fine by granularity and the small size sinter return fine 4 mm is returned to the sintering; while the large size sinter return fine 4 5 mm is transferred to make a composite pellet acting as the core of the com posite pellets Thus a new path of green and efficient utilization of sinter return fine was proposed to
·2 1 INTRODUCTION In recent years fine iron ore concentrate production also referred to as pellet feed increased as the availability of new lump ore and high quality sinter fines declined
·Iron ore sinter plants are energy intensive components of integrated iron and steel production see Table 1 where the iron ore fines <5 mm are converted into larger >5 mm lump sinter cakes with greater gas permeability which are the most important burden materials for iron making in blast furnaces BFs [7] The main process is shown in Fig 2 and described in
·In allusion to high alumina sinter with high rate of pulverization and impact on blast furnace permeability and performance of slag etc rationality of sinter with V Ti pellets was analyzed by
·Powder X ray diffraction XRD is increasingly being used for the characterization of iron ore sinter and pellets thanks to the continuing developments in its instrumentation and software that
·Commercially supplied iron ore pellets and sinter of size range 10 13 mm are utilised in the present study Comparable to the utilisation in the industrial blast furnace two types of olivine fluxed pellets types 1 and 2 and one type of iron ore sinter are mixed in 40 20 40 ratio to form a ferrous raw material bed
·A composite mass of indurated pellet and sinter named as "Pellet Sinter Composite Agglomerate" was obtained Linz Donawitz converter sludge and mill scale were used in pellet mix to provide in situ heat in pellets that enhances incipient fusion to form bond in pellets The developed sinter shows good shatter index 92% tumbler index %
2 Pellet was observed for the sinter and pellet rather than the lump and it was suggested that this was due to the significant content of silico ferrite of calcium and aluminium SFCA in the sinter and pellet 10 When this SFCA has been reduced in the presence of H 2 its fracture toughness value was decreased
A comparative study of pellets sinter and mixed ferrous burden behaviour under simulated blast furnace conditions Dharm Jeet Gavel a c Allert Ademab Jan van der Stelb Tim Peetersb Jilt Sietsma a Rob Boom a and Yongxiang Yang a aDepartment of Materials Science and Engineering Delft University of Technology Delft Netherlands; bResearch and Development
·Abstract With the movement toward hydrogen enriched blast furnace operation to lower greenhouse gas emissions ferrous burden design must be reconsidered to optimize furnace permeability Increasing the ratio of direct charge lump ore in the ferrous burden also presents an opportunity to lessen the emissions associated with the production of sinter and
·A typical setup of our UHS technique is shown in Figure 2a c where two carbon strips are used as the Joule heaters to sandwich the temperature of the carbon heater Figure 2a can rapidly increase up to 1500 3000 °C Figure 2b in ≈10 pressed precursor pellet is in close contact with the carbon heaters Figure 2c which can achieve
·al properties of sinter and the softening melting behavior of the mixed burden when the pellet alkalinity was and the MgO content in sinter was % % and % The influence of the comprehensive charge slag on the per meability index of the cohesive zone was also analyzed 2
·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
·Physicochemical behaviour of the pellets sinters and its mixture 60% pellets 40% sinter is investigated by a series of smelting and quenching experiments For all ferrous raw material beds three distinct stages of bed shrinkage occur due to indirect reduction softening and melting However the characteristic nature displacement temperature and permeability differ
