Enhancement of Iron Ore Sinter Reducibility through Coke Oven Gas Injection into the Modern Blast Furnace Elsayed Abdelhady MOUSA,1 Alexander BABICH2 and Dieter SENK2 1 Central Metallurgical Research and Development Institute CMRDI, P. O. Box 87-Helwan, Cairo, Egypt.
It has been noticed higher amount and higher heating value of blast furnace top gas could be generated through cog injection into the blast furnace. 16 although the injection of cog into the blast furnace is practiced in some countries with different injection rate from about 30 to 280 m 3 thm but its effect for example on the sinter ...
2010. influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions. ironmaking amp steelmaking vol. 37, no. 3, pp. 219-228.
Blast furnace reports show that the coke consumption during this period was abt. 1000 to 1100 kgsm. ton iron, when open-hearth iron with a si-content of about 1 was produced and about 1200 kgs. cokem.ton iron in the case of foundry iron with a si-content of about 3 . case 2. trials with a pellet burden at oxelosunds blast furnace no. 2.
Aug 20, 2010nbsp018332in order to clarify the influence of nut coke on the pellets reducibility, industrial iron ore pellets were reduced with and without nut coke participation under different temperatures and atmospheres. isothermal and nonisothermal reduction tests under simulating blast furnace conditions were performed using an experimental laboratory rig.
Jan 01, 2013nbsp018332reducibility is an ability of iron ore material to give oxygen from ferrous oxide to reducing gas with greater or smaller velocity. its role increases as the blast furnace improving and the coke consumption decreasing. the reducibility of the iron ore materials is defined in accordance with russian federation state standard lt 1721217384.
Iron ore pellet 2cblast furnace. iron ore blast furnace use of iron ore pellets in blast furnace burden . use of iron ore pellets in blast furnace burden pelletiing is a process that involves mixing very finely ground particles of iron ore fines of sie less than 200 mesh with additives like bentonite and then shaping them into ovalspherical lumps of 8 20 mm in diameter
Mar 09, 2013nbsp018332use of sinter reduces the coke rate and enhances the productivity in blast furnace. sintering process helps utilization of iron ore fines 0-10 mm generated during iron ore mining operations. sintering process helps in recycling all the iron, fuel
Key words blast furnace, coke rate, regression equation, sinter, burden, statistics . preamble an blast furnace is a typical case of multivariate system which is subjected to a large ... content of -12 mm size fraction in iron ore lump x9, reducibility of sinter x3,
Dec 06, 2015nbsp018332reducibility of iron bearing material is an important property which represents its suitability of reduction in iron making furnaces. it has direct influence on
Blast furnace gas blast furnace gas is a byproduct of blast furnaces where iron ore is reduced with coke into metallic pig iron. the gas has a very low heating value of around 0.9kwhnm 3, which on its own is typically not high enough for combustion in a gas engine.
Mar 15, 2015nbsp018332a sintering plant has become a tremendous success for providing a phenomenal increase in the productivity and saving in coke rate in the blast furnace. fluxed sinter represents an improved blast furnace material as compared to sized iron ore.
Aug 02, 2019nbsp018332the ironmaking blast furnace bf is one of the most important but complex industrial reactors. in this process, coke, as the main fuel and reducing agent in bf ironmaking, together with iron ore are charged in alternate layers through a rotating charging chute from furnace top, resulting in a layer-structured coke and ore burden distribution.
Viscosity of the blast furnace slag were adequately maintained by composition control without top charging of lump flux case 2 of table 1. as a result, the blast furnace attained a productivity coef-ficient as high as 2.37 tdm3 and a high orecoke rate of 4.87 with a pcr of 161 kgt-pig11. 3.2 improvement of blast furnace operation by ...
800-1000 176c. the reducibility improvement of iron bearing materials can improve the indirect reduction in blast furnace and thereby increase productivity and quality of hot metal and decrease energy consumption. use of agglomerates such as pellets and sinter in blast furnaces is increasing day by day to utilize fines and concentrates ...
The technique of defining the minimum coke consumption in blast furnace smelting allows for the calculation of the reserve of coke economy on the basis of thermodynamic principles. in this reserve the constitutive role belongs to the reducibility of the iron ore materials the agglomerate and pellets. in the present paper, the questions of the reduction kinetics of the iron ore materials and ...
Abstract. various by-products of iron and steel making industries viz. iron ore fines, coke fines, blast furnace dust and basic oxygen furnace sludges, etc. are generated at vario
Blast furnace operation in the future. ore-coke mixed charging, in which coke is mixed in the sinter or iron ore raw material and charged into the blast furnace, is known as one technique for achiev-ing these objectives1,2. although this is a technique which improves the permeability and reducibility of
As a result, the blast furnace attained a productivity coefficient as high as 2.37 tdm3 and a high orecoke rate of 4.87 with a pcr of 161 kgt-pig11. 3.2 improvement of blast furnace operation by decreasing al2o3 content in sinter further extending the line of the above tests, in 2001 another series of tests were conducted for decreasing ...
Blast furnace as a result of prior calcinations outside the furnace and thus reduces the coke rate singh and deo, 1995. incorporation of flux in the burden through sinter, therefore, greatly improves the blast furnace performance, since the formation of slag then becomes relatively easy and it forms at the correct level in the blast furnace.
Sintering machine, which produces sintered ore as a raw material for the blast furnace, coke ovens that produce coke, which is important as a reducing agent, and hot stoves that generate the high temperature approx. 1 200176c hot blast blown into the blast furnace. large amounts of co2 are generated by the reduction reaction fe2o33co 2fe ...
In present study, effect of nut coke addition on the olivine fluxed iron ore pellet bed is investigated under simulated blast furnace conditions. nut coke mixing degree replacement ratio of regular coke was varied from 0 to 40 wt to investigate the physicochemical char-acteristics of the pellet bed.
However, the proportion of blast furnace bf basic oxygen furnace bof steelmaking could drop to 40 in 2050 from the current level of 60 as the blast furnace ironmaking proportion falls from around 95 to 60 of the total iron ore processed. non blast furnace ironmaking technology process is currently a supplementary system, and ...
In addition to producing feedstock for its own blast furnaces, the mill also supplies a leading indian steelmaker with extruded briquettes, which is charging between 3-5 in a high-volume furnace. result the homogenous blend of iron oxide fines and fine carbon particles have driven a 20-plus reduction in coke rates.
Mar 21, 2011nbsp018332carbon composite iron ore hot briquette ccb is the product of fine iron ore and fine coal by hot briquetting process, which attracts more and more attention as a new type of ironmaking raw materials aiming to improve the operation efficiency and reduce the coke consumption of blast furnace.
Aug 21, 2008nbsp018332ore for other companies is 20 lump ore to 80 sintered ore. in contrast, the kobe works no. 3 blast furnace has a ratio of 30 lump ore to 70 iron ore pellets called all-pellet operation, while the kakogawa works no. 2 and no. 3 blast furnaces have a ratio of 20 lump ore, 30 iron ore pellets and 50 sintered ore.