Rdi of sinter

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August undefined, 2024

WebNov 4, 2024 · Sintering is one of the iron ore post-processing steps to prepare iron ore fines for a blast furnace (another common process of iron fines agglomeration is pelletizing, but this will be part of another blog). Feed for a sinter … WebSep 8, 2024 · The most harmful effect of alumina is to worsen the RDI (reduction degradation index) value of sinter. RDI value increases as the alumina content rises. It is seen that within a 10 % to 10.5 % CaO content range, an increase of 0.1 % in the alumina content raises the RDI by 2 points.

(PDF) Effect of CaCl2 on RDI and RI of Sinter

WebNov 1, 2010 · Under laboratory conditions, a study on the RDI and RI (reduction index) of sinter was proposed, in which the sinter was immersed in solutions with different types … WebMar 1, 2024 · In order to improve the RDI property of sinter under certain MgO contents, the effects of fine MgO-bearing flux on the strength of sintered samples before and after reduction in three systems (Fe 2 O 3-MgO, Fe 2 O 3-MgO-CaO, and Fe 2 O 3-MgO-CaO-SiO 2) were investigated in the present work. The experimental results show that (1) in the three ... oseille tv formation amazon lba

Effect of Basicity on Titanomagnetite Concentrate Sintering - 日本 …

WebThe RDI is a very important parameter that is used as a reference in all sintering work and serves to predict the sinter's degradation behaviour in the lower part of the blast furnace stack. Secondary hematite, also known as skeletal rhombohedral hematite, is the main cause of a poor sinter RDI. WebJun 23, 2024 · The sintering pot test was used to investigate the effect of TiO2 on the sintering behavior of chromium-bearing vanadium–titanium magnetite (CVTM) sinter. The main characterization methods of X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy-energy disperse spectroscopy (SEM-EDS), and … WebReduction Disintegration Index ( RDI) is one key factor of sinter quality, which indicates the degree of disintegration by the reducing gas at about 550 in the middle of the blast … osei name origin

Study on Reduction Disintegration of Sinter from …

(PDF) Fuzzy Logic Based Sinter RDI Optimization

WebMar 20, 2024 · Sinter with very high RDI generates fines that would lower the permeability in the upper part of the blast furnace leading to higher fuel consumption in the iron making process. Sinter with very low RDI would have lower reducibility and once again increase the fuel consumption in the blast furnace. WebNov 15, 2024 · To check the influence of reduction temperature on RDI, sinter soaked in 5 % CaCl 2 solution were reduced at different temperatures (500 ℃, 550 ℃, 600℃ and 650 ℃), and the results are illustrated in Fig. 4 (a). The RDI decreased significantly with the temperature increasing, while at 650 ℃ the RDI improved slightly compared with that ... ose iniciarWebApr 15, 2024 · The traditional titanomagnetite sintering process consumes high fuel and produces weak-strength sinter. In this study, double-layer sintering was used to solve … ose inc co

"WebReduction disintegration of sinter significantly affects the coke consumption and productivity of blast furnace smelting. As we know, the reduction disintegration index (RDI … " - Rdi of sinter

Rdi of sinter

Multi-objective Optimization of Integrated Iron Ore Sintering …

WebAug 1, 2011 · With two kinds of gas composition simulating different iron-making processes, the reduction degradation indices (RDI) of three kinds of iron ores all present the tendency of “inverted V-shape” in... WebMar 3, 2024 · The disintegration sinter’s pieces gives grains of various sizes which are screened to three groups. The following indices, according to International Standard ISO 4696-1:2007, are determined: Static resistance to degradation (the ratio of reduced sinter with size larger than 6.3 mm after tumbling test to reduced sinter)

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WebJan 1, 1993 · On the other hand, even when the reduction degradation index (RDI) of sinter is the same, the rate of reduction degradation of sinter varies according to temperature. Fine sinter produced by reduction degradation accumulates in the shaft, causing the gas flow distribution to become uneven and the LTTR zone to become firmer. Therefore, in blast ... WebAug 1, 2011 · With two kinds of gas composition simulating different iron-making processes, the reduction degradation indices (RDI) of three kinds of iron ores all present the tendency …

WebSep 7, 2024 · In the iron-ore-sintering process, the use of biomass charcoal instead of coke breeze can reduce the emission of flue gas pollutants and alleviate the energy crisis of fossil fuels. ... the sinter RDI −0.5 was about 8%, and the RDI +3.15 was about 70%. The reason for this result was when the biomass charcoal in the sintered fuel increased to ... WebJun 23, 2024 · The sintering pot test was used to investigate the effect of TiO2 on the sintering behavior of chromium-bearing vanadium–titanium magnetite (CVTM) …

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WebOct 29, 2024 · Usually, the reduction degradation index ( RDI) is introduced to describe the extent of the size reduction resulting from the crystal structure change. The low-temperature reduction disintegration of ferrous materials has attracted much interest. For …

WebSep 1, 2024 · Under laboratory conditions, a study on the RDI and RI (reduction index) of sinter was proposed, in which the sinter was immersed in solutions with different types and concentrations. ose inscripciones 2021WebIndex (RDI) that is an essential sinter quality indicator. Especially, the effects of the chemical composition of sinter, physical conditions of raw materials and factors reflecting the … ose internationalWebNov 1, 2010 · Under laboratory conditions, a study on the RDI and RI (reduction index) of sinter was proposed, in which the sinter was immersed in solutions with different types and concentrations. In order to study the mechanism of CaCl 2 effect on the RDI and RI of sinter, analysis based on the methods of IR spectra, SEM and chalcography was adopted. osei - oil spill eater international corpWebJul 8, 2013 · Sinter degradation during reduction at low temperature is normally determined by the RDI static test, which is carried out at 550 deg C. Low values of RDI is desirable. Secondary hematite, also known as skeletal rhombohedral hematite, is the main cause of a poor value of the sinter RDI. osei owusu la crosseWebJul 15, 2024 · The reduction disintegration indexes (RDIs) of pellets reduced at different temperatures was given in Fig. 3. It can be seen from the line chart, the iron ore pellets adopted in this research showed good quality for anti-disintegration at low temperatures. The RDI of pellet fluctuated within a range of 0.4% to 3.2%. osei scampai ricettaWebA method of improving RDI of Sinter Technical field The invention belongs to iron-smelting raw material production technical fields, are related to the production technology of sinter,... ose incWebOct 28, 2024 · The sinter with low reduction degradation index (RDI) for COREX reduction was prepared by separated granulation sintering process. The results illustrate that the productivity and tumble index are attained to be 1.64 t m −2 h −1 and 59.25%, respectively, in pot tests under the optimal conditions. oseiv obra social olavarria