رسالة على الانترنت
المزيد من المعلومات
2014-11-19 The ore is a typical limonite, which could help to reduce the production cost of hot metal. The assimilation and fluidity properties of the new kind of high alumina iron ore were investigated, comparing with other kinds of limonite and magnetite iron ores. The effect of addition of the iron ore on sintering process was also performed in a ...
Read More
2018-6-3 (2015). Effect of high alumina iron ore of gibbsite type on sintering performance. Ironmaking Steelmaking: Vol. 42, No. 1, pp. 34-40.
Read More
Influence of Alumina on Iron Ore Sinter Properties and ... The effect of alumina and silica on the reaction kinetics of carbon composite pellet at 1474 K (1200°C) was investigated. Following conclusions can be made from this study. (1) The reduction rate of iron oxide in carbon composite pellet was influenced by alumina and silica contents.
Read More
2012-12-1 Iron ore is the raw material used to make pig iron, has four major effects on iron: increased hardness and strength, lower solidus temperature, » More detailed Record quarterly iron - ore output for Rio Tinto
Read More
2010-4-23 Ore with higher alumina content is usually expected to be detrimental in forming the sinter matrix, if sintered alone, due to the low reactivity of alumina bearing minerals and the high viscosity of primary melts. The selective granulation process is a new sintering process for high alumina iron ore fines, and can eliminate the adverse effects of ‘hard to sinter’ or ‘unsuitable – for ironmaking’ ores.
Read More
2017-9-8 Alumina affects the sintering of iron ore. 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
Read More
2013-5-27 Effect of high alumina on slag. High Al2O3 content in BF slag has many adverse effects. The increase of Al2O3 in the iron ore not only affects the strength of the sinter, but also its characteristics at high-temperatures in the cohesive zone.
Read More
Many researches on high-temperature characteristics of iron ores with various alumina concentration have been carried out [ 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 ]. It is found that high Al 2 O 3 content tends to promote the lowest assimilation temperature and namely weakens the assimilability [
Read More
2021-5-1 The effect of each alumina occurrence on sintering performance of iron ores is still unclear. In order to effectively utilize high-alumina iron ores during sintering, it is extremely essential to clarify the effect of each alumina occurrence on sintering performance of iron ores via the exclusion of other influencing factors.
Read More
2019-5-20 As an important component of gangue in iron ore, alumina affects the amount of liquid phase by influencing the formation of calcium ferrites‐bonding phase. In this work, the hematite solid solution with aluminum (H ss ) was prepared and sintered with CaO to investigate the effect of alumina on liquid phase formation in sintering process of iron ore fines.
Read More2018-6-3 (2015). Effect of high alumina iron ore of gibbsite type on sintering performance. Ironmaking Steelmaking: Vol. 42, No. 1, pp. 34-40.
Read More
The ore is a typical limonite, which could help to reduce the production cost of hot metal. The assimilation and fluidity properties of the new kind of high alumina iron ore were investigated, comparing with other kinds of limonite and magnetite iron ores. The effect of addition of the iron ore on sintering process was also performed in a ...
Read More
2012-12-1 effect of high alumina in iron ore – Grinding Mill China. Posted at: August 14, 2012. Influence of Alumina on Iron Ore Sinter Properties The selective granulation process is a new sintering process for high »More detailed
Read More
the chemical composition and consistency of iron ore fines, particularly in terms of alumina content. How-ever, due to the limited reserves and increasing depletion of high-grade iron ore resources, the alumina con-tent of iron ores is expected to increase gradually.
Read More
2012-10-15 Keywords: Barsua, Iron Ore, Alumina, Washing, Gravity separation, Magnetic separation, Hydrocyclone Introduction In iron making, the adverse effect of alumina on reducibility, coke rate, productivity and blast furnace operation is well established and with the characteristic high alumina present in Indian 361
Read More
2015-5-27 M. Sinha et al. 181 er less important sources are Carbonates (FeCO 3), Sulphides (Pyrite FeS 2) and Silicates like Chamosite, Grune- rite etc. with complex chemical formulae. The main impurities in iron ore are SiO 2, Al 2O 3, S, P, TiO 2, and Na 2O K 2O.Each steel company has its own blast furnace practice and the impact of these impurities varies accor-
Read More
2017-2-7 Zhang M, Andrade M (2016) Effect of MgO and basicity on microstructure and metallurgical properties of iron ore sinter. In: Ikhmayies SJ, Li B, Carpenter JS, Hwang J, Monteiro SN, Li J, Firrao D, Zhang M, Peng ZW, Escobedo JP, Bai C (eds) Characterization of minerals, metals, and materials.
Read More
2019-5-20 The formation of liquid phase is of great significance for improving the quality of high basicity sinter which is widely used as raw materials in blast furnace ironmaking. As an important component of gangue in iron ore, alumina affects the amount of liquid phase by influencing the formation of calcium ferrites‐bonding phase.
Read More
2017-4-18 its temperature. Indian blast furnaces run into high alumina slag (Al 2 O 3 >= 25%) due to high alumina/silica ratio in iron ore as well as sinter and high ash content in the coke. These slags are highly viscous which affects the gas permeability, heat transfer etc. In the present work slag viscosity was determined for CaO-SiO 2-MgO-Al 2 O 3
Read More
The roles of A1 2 O 3 and MgO on the evolution of phases in iron ore sinters have been investigated by simulated sintering in the laboratory using natural ores, commercial grade limestone and analytical grade A1 2 O 3 and MgO. A1 2 O 3 may not be necessary for the formation of SFCA in sinters if the sintering temperature is below 1300°C and the sintering time is short.
Read More
effect of high alumina in iron ore india crusher. Influence of Alumina on Iron Ore Sinter Properties and Productivity . Nov 20, 2008 selective granulation process is a new sintering process for high alumina iron ore ...
Read MoreThe ore is a typical limonite, which could help to reduce the production cost of hot metal. The assimilation and fluidity properties of the new kind of high alumina iron ore were investigated, comparing with other kinds of limonite and magnetite iron ores. The effect of addition of the iron ore on sintering process was also performed in a ...
Read More
With the rapid expansion of the Chinese steel industry and exhaustion of choice iron ore deposits, high-grade iron ore resources are in short supply globally. More and more mid-low grade iron ores with high Al2O3 content has been exploited and imported from oversea in China. Undoubtedly, the undesired Al2O3 content in iron ores certainly have an adverse impact on subsequent sintering process.
Read More2012-12-1 effect of high alumina in iron ore – Grinding Mill China. Posted at: August 14, 2012. Influence of Alumina on Iron Ore Sinter Properties The selective granulation process is a new sintering process for high »More detailed
Read More
Article “Effect of high alumina iron ore of gibbsite type on sintering performance” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to ...
Read More
2021-6-6 Effect of alumina and its occurrence on sintering performance . ... iron ore deposits, highgrade iron ore- resources has been in short supply globally. More and more mid-low grade iron ores with high Al 2O 3 content has been exploited and imported from overseas in China. Undoubtedly, the Alundesired 2O
Read More2015-5-27 M. Sinha et al. 181 er less important sources are Carbonates (FeCO 3), Sulphides (Pyrite FeS 2) and Silicates like Chamosite, Grune- rite etc. with complex chemical formulae. The main impurities in iron ore are SiO 2, Al 2O 3, S, P, TiO 2, and Na 2O K 2O.Each steel company has its own blast furnace practice and the impact of these impurities varies accor-
Read More
2016-6-14 its temperature. Indian blast furnaces run into high alumina slag (Al 2 O 3 >= 25%) due to high alumina/silica ratio in iron ore as well as sinter and high ash content in the coke. These slags are highly viscous which affects the gas permeability, heat transfer etc. In the present work slag viscosity was determined for CaO-SiO 2-MgO-Al 2 O 3
Read More
The productivity of blast furnace can be increased if a higher proportion of sinter is charged. Since the Indian sinter has higher amount of alumina ( 2.5%) in comparison to sinter produced elsewhere (Al2O3 less than 2%), 1) the proportion of sinter in the blast furnace burden cannot be exceeded beyond certain limit. Alumina also decreases the sinter quality in terms of its chemistry. A higher ...
Read More2018-5-18 gangue minerals as impurities was used. The ore contains high alumina and sili-ca and it is to be used as feed in steelmaking; however these impurities adversely affect the production of pig iron and steel [3]. High silica and alumina also form high viscous slag with greater volume in blast furnaces which requires more flux [4].
Read More
المزيد من المعلومات
حقوق حقوق التأليف والنشر: رقم التدوين Development Buide 10200540 -22. خط الخدمة: 0371-86549132. E-mail：[email protected] العنوان: الرقم البريدي رقم 169 Second Avenue Avenue New Avenue: Chengzhou الصين: إحصاءات الموقع الشبكي 450001.
