Iron ore sintering is the iron ore powder agglomeration process that changes fine iron ore powder into the lumpy iron-bearing raw material used for blast furnace ironmaking. ... and stack. The waste gas discharged from the circular cooler used for cooling of sinter has high temperature, so the heat needs to be recovered by the …
For iron ore, coking coal, coke and hot sinter conveying we supply abrasion resistant and high temperature withstand capacity conveyor belts. Power: For internal coal handling plant and external coal handling plant we supply flame retardant, antistatic conveyor belts, We also manufacture bunker sealing belts.
The SFCA-I phase is the most desir-able bonding phase in iron ore sinter and pellets since microstructures composed entirely of SFCA-I show higher physical strength and higher …
Iron ore sinter is one of most extensively utilised ferrous burdens for blast furnace (BF) worldwide. The sinter quality greatly depends on the microstructure and chemical compositions of calcium ferrites which is significantly affected by sinter basicity (mass ratio of CaO to SiO 2).The characterisation of iron ore sinter products with …
An ore-blending optimization model for the sintering process is an intelligent system that includes iron ore characteristics, expert knowledge and material balance. In the present work, 14 indices are proposed to represent chemical composition, granulating properties and high temperature properties of iron ores. After the relationships …
Dynamic Model of High-Temperature Sintered Iron Ore Plastic Deformation Considering Reduction Degree SHUNGO NATSUI, MIZUKI TANAKA, ANDREY STEPHAN SIAHAAN, and HIROSHI NOGAMI Modeling of sintered iron ore deformation during ironmaking blast furnace processes is important to achieve superior process operations, particularly with …
The levels of Fe, SiO 2, Al 2 O 3, MgO and other elements, together with the nature of the minerals in the fine ore and associated sintering conditions play a major …
Productivity during iron ore sintering is a strong function of the gas flow velocity because the descent of the flame front, for a particular ore mix, is primarily dependent on the rate of convective heat transfer.1 Gas velocity is controlled by the suction applied across the bed and the bed properties. According to the Ergun equation, key …
L. F. Verdeja (2017) Iron Ore Sintering: Process, Mineral Processing and Extractive Metallurgy. Review, 38:4, 215-227, DOI: 10.1080/08827508.2017.1288115 ... the high temperature zone (above 1100 ...
Granulation and thermal densification are the two most important steps in iron ore sintering, and determine the quality of the resultant sinter and the performance …
BHP, IRON ORE TECHNICAL MARKETING, BRISBANE QLD 4000, AUSTRALIA . 2. ... In this work, the high temperature interaction between sinter and Newman Blend Lump ore (NBLL) from Australia was studied ...
Iron ore sintering was a semi-melting process. Firstly, iron ore particles reacted with fluxes and generated liquid phase at high temperatures. Then, the liquid phase combined the dispersive unreacted iron ore (usually the core of coarse particles), and the liquid phase recrystallized and formed the bonding phase during cooling [12, …
Temperature and atmosphere determine minerals composition together, and bring influence on sintering process in different ways. It can be deduced that …
DOI: 10.1016/j.mineng.2023.108062 Corpus ID: 257861352; Effect of ore types on high temperature sintering characteristics of iron ore fines and concentrate @article{Han2023EffectOO, title={Effect of ore types on high temperature sintering characteristics of iron ore fines and concentrate}, author={Hong-liang Han and …
The properties of circulating gas have a significant effect on sintering with flue gas recirculation, and the influence of CO in sintering process was investigated. The results show that the post-combustion of CO conducts in sinter zone when flue gas passes through the sintering bed, which releases much heat and reduces the consumption of …
Super-high bed sintering process is an important development direction of iron ore sintering for its lower emission and higher yield. However, there is a lack of deep understanding of the uneven quality of super-high bed sintering products, and the deterioration of reduction disintegration performance, the thickening of hearth layer and …
Research of optimizing ore blending indicates that, as the chemical components in melt zone satisfies the conditions of mineralization, the yield and tumbler strength of sinter can be improved, and the solid fuel consumption can be reduced.
concluded that iron ores with high porosity and iron con-tent, high LOI (loss on ignition), and low Al 2O 3 content had high absorbability. The previous researches on the high-temperature behavior of iron ores have certain guiding significance for improving the sinter properties. However, the researches
Quantitative XRD analysis of iron ore sinter and pellets3.5.1. Fundamental studies of sinter phases. Apart from natural iron ore, the Rietveld method has also been applied to study the phases presented in sintered iron ore, or iron ore sinter. A typical outcome from the Rietveld analysis of an iron ore sinter is shown in Fig. 3.4.
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, and closed pore was reconstructed. The equivalent spherical diameter of the pore and its distribution frequency, volume fraction, sphericity, and ...
Research status and prospects of the iron ore's high temperature behaviors in the sintering process
Debinding and sintering of metal injection molding (MIM) components. S. Banerjee, C.J. Joens, in Handbook of Metal Injection Molding (Second Edition), 2019 7.4.1 Sintering definitions. Sintering is a term used in many industries. The current author's (S.B.) first contact with the term was in an extractive metallurgy class where students learnt about …
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 …
Table 1 lists the chemical composition of the iron ores and limestone used in the present study. The ores were sourced from different mines around the world with distinct chemical compositions and geological characteristics. Ore 1 was a typical Brazilian hematite ore containing relatively high Fe and low SiO 2 and LOI1000 contents. Ore 2 …
The results show that the high-temperature sintering characteristics of sea sand ore can be optimized to a certain extent by adding limestone, ludwigite, and fine powder. ... Cheng FZ, Luo JW (2021) Influence of quick lime on pore characteristics of high-temperature zone in iron ore sinter based on XCT technology. J Mater Res …
Physical and Chemical Properties of Raw Materials Used in the Test. The iron ore concentrate used in the experiments is a high-grade, low-silica magnetite concentrate with the iron grade 69.65%, SiO 2 content 1.69%, and the FeO content 29.35%. In order to analyze the suitable flux for producing low-silica basic pellets, two …
The reduction degradation characteristics of typical sinter, pellet and lump ore were tested with the reducing gas conditions simulating two kinds of iron-making processes. The results show that, in the same condition of gas composition and temperature, the reduction degradation degree (RDI<3.15mm of sinter is high, …
1. Introduction. With the continuous huge demand for steel in China and increasing consumption of high-quality iron ores worldwide, low grade iron ores have been imported in enormous quantities by China, specially alumina-rich iron ores [[1], [2], [3], [4]].Thus, iron ore sinter as the major burden for blast furnace production is achieving …
Sinter body strength, which reflects the strength of sinter, plays an important role in the improvement of sinter. In this study, the sinter body strengths of iron ores were measured using a microsintering method. The relationship between the chemical composition and sinter body strength was discussed. Moreover, sinter-pot tests were …
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 ...
Agglomeration of iron ores is the iron ore pretreatment process in which the powdery iron ore that cannot be directly fed into a blast furnace experiences high-temperature solidification by sintering process and pelletizing process or low-temperature solidification by pelletizing process and briquetting process to generate the rich ore …
Analogue sinter tablets were produced at temperatures between 1250°C and 1320°C, with a range of hold times and cooling rates. Platy silico-ferrite of calcium and aluminum (SFCA) morphology was identified in samples produced at 1250°C using reflected light microscopy; however, quantitative x-ray diffraction (XRD) identified the presence of the SFCA phase, …
The agglomeration process begins with the preparation of the burden mix for iron ore sintering and includes the following stages: material sizing, burden components dosing, mixing, moistening and pelletizing of the burden. Fine iron ore concentrate (<0.074 mm) and sinter ore fines (<10 mm) do not need crushing.
Steel making using the integrated blast furnace (BF) process route is still the dominant steel production method covering 70% of worldwide steel production and iron ore sintering is one of the most important iron sources within this process, which represent 70–80% of charged iron-bearing materials into modern BF [].Inside this route, sinter …
For iron ore, coking coal, coke and hot sinter conveying we supply abrasion resistant and high temperature withstand capacity conveyor belts. Power: For internal coal handling plant and external coal handling plant we supply flame retardant, antistatic conveyor belts, We also manufacture bunker sealing belts.
