Iron Ore Sinter satyendra; July 15 2014; 0 Comments ; surface properties of the iron ore and the wettability of the iron ore During sintering process coke breeze increases the temperature of the sinter mix within the sinter bed to achieve partial fusion and diffusion bonding and on cooling the different mineral phases crystallizes and
The metallurgical properties of iron ore sinter mainly depends on sinter mineralogy and microstructure which in turn depends on the chemical composition of the sinter mix
The influence of varying amounts of magnesia silica and alumina in iron ore sinter on its mineralogy reducibility index RI reduction disintegration index RDI physical breakdown AI and TI and production properties coke breeze rate were
Alumina containing iron ore samples 0·7 5·5%Al2O3 were sintered in a down draft sinter pot The structures of the produced sinters were microscopically examined and the different phases
Due to depletion of high grade iron ore resources alumina content in the iron ore fines is expected to increase gradually 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
composition of the complex calcium ferrite phase is substituted by the hemicalcium ferrite in which Si and Al replace some of its Fe content They also reported that
Currently high alumina iron ore Al 2 O 3 > wt % which has been readily available in the market is crucial for steel plants to cut costs and enhance market competitiveness 1 5 The sinter as a major proportion of blast furnace burden is therefore expected to have a significant impact on operation and economic indicators of blast
composition and microstructure of iron ore sinter for low temperature drip of molten iron with high permeability established that the basicity had a dominant influence on the dripping temperature while low alumina content and high MgO leads to
The fundamental properties and utilisation feasibility in the sintering production of a newly developed commercial iron ore resource were studied at laboratory scale in the present work
Aiming at the effective utilization of the abundant high alumina iron ores with low iron grade the influence of alumina concentration and type on high temperature characteristics was clarified based on the analyses of eight typical iron ores The results indicate that high temperature characteristics of iron ores in various alumina types are different Higher Al2O3
A number of the commercial iron ores were tested in a sinter pot to study the effect of iron ore composition on the sintering properties In the sintering of individual iron ores under the sinter controlled at the same levels of basicity SiO 2 and MgO the sintering properties varied with iron ore type greatly The sinters made from the dense low alumina iron ores
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 an obvious increase in Al 2 O 3 content
Degradation characteristic of iron ore sinter should be closely connected with fracture toughness of min erals in sinter against stress Evans and Charles" revealed that fracture tough ness of homogeneous ceramics could be evaluated from length of
The fuel is a key factor in the iron ore sinter production so it is essential to know its impact not just on mechanical properties of the finished sintered ore but also on the mineral composition
The structure of iron ore sinter is not uniform It consists of pores of varying sizes and a complex aggregate of phases each with different properties It is the combination of these pores and phases and the interaction between them that determines the sinter properties but also makes the prediction of sinter properties so difficult1 2
PIMENTA and SESHADRI V Characterisation of structure of iron ore sinter and its behaviour during reduction at low temperatures Iron and Steelmaking 2002 vol 29 pp 169 174 [ Links ] 8 BRISTOW and WATERS Role of SFCA in promoting hightemperature reduction properties of iron ore sinters
is necessary to utilize low grade iron ores previously not utilized in blast furnace process to fulll the requirement of iron ore intake this includes iron ores containing higher than 2 wt pct of alumina Alumina has been known to strongly deteriorate tumbler index TI and reduction degradation index RDI of iron ore sinter [ 23]
A number of the commercial iron ores were tested in a sinter pot to study the effect of iron ore composition on the sintering properties In the sintering of individual iron ores under the sinter controlled at the same levels of basicity SiO 2 and MgO the sintering properties varied with iron ore type greatly The sinters made from the dense low alumina iron ores
iron ore concentrate contains a lower alumina Recently it is more popular to be applied in commercial sinter plants to decrease the alumina content in sinter or combined with a high alumina low grade ore to reduce the production cost of sintering However the productivity of sinter decreased with a decrease in the size of iron ore
Influence of Alumina on Iron Ore Sinter Properties and Productivity in the Conventional and Selective Granulation Sintering Process Optimisation of MgO addition in low and high silica iron ore sinter to improve sinter reducibility at JSW Steel Limited T Umadevi A Brahmacharyulu R Sah P Mahapatra M Prabhu
