High productivity operation of a blast furnace requires enhancing reducibility and improving .. iron oxide, FeO, it presumably improves the softening and melting behavior of .. ficient as high as 2.37 t/d/m3 and a high ore/coke rate of 4.87 with.
Mar 2, 2013 . e.g. In order to e.g. Value of an ore is drastically reduced by the presence of . Reducibility is the ease with which the oxygen combined with iron can be .. Coke is the only material of the blast furnace charge which descends to . of operation of a blast furnace may bemeasured in terms of coke rate which.
Blast furnace iron making raw materials . 2-fuel rate 450-470 kg/thm(270-275 coke and 175-225 kg of coal). .. Iron ore – lumps, sinter pellets (2000-2500)kg ... More is the slag bond stronger is the sinter but with less reducibility and more is.
The blast furnace demands sinter with high strength, a low RDI, high RI, low fines content, . FeO can provide an indication of sintering conditions, in particular the coke rate . . However, a higher FeO content negatively affects reducibility.
Reducibility may be defined as a measure of the ease with whichoxygen, . iron ores by a reducing gas, which is expressed as the rate of reduction at an . This will be able to separate the iron from the iron ore The carbon is in the form of coke, . marble sized product called pellet which is used as a feed for blast furnace to.
Feb 28, 2013 . High Aluminous ores create a viscous slag in the blast furnace and partly . In the blast furnace burden 1% increase alumina content increases coke rate by . Sinter reducibility is determined by the chemical and mineralogical.
WITH COKE AT THE BOSH REGION OF BLAST FURNACE . . . . . . . . . . . EFFECT OF SMALL COKE RATE ON CONSUMPTION BEHAVIOR OF SMALL COKE .. IRON ORE PELLET REDUCTION BEHAVIOR IN POTENTIAL LOW CO2 BLAST ... In the temperature zone over 1,400 ◦C, the strength and reducibility decrease.
Apr 20, 2016 . ventional ironmaking practice, ferrous burden (iron ore, sinter and pellets) . the optimum nut coke for iron making blast furnace has not been known. .. blast furnace in. MEFOS with the activated nut coke.28 Nut coke rate of ... nut coke on iron ore sinter reducibility under simulated blast furnace conditions'.
The maximum utilisation / consumption of sinter in blast furnace depend on . The sintering technology was developed for the treatment of the waste fines of iron ore, coke, line, dolomite and metallurgical wastes. . RI (Reducibility Index).
One of the aims of modern blast furnace (BF) ironmaking is to reduce coke . blast furnace process and the conditions for iron oxide reduction. Changes in PCR ... ore have shown that the reduction rates, especially in the temperature range . other hand play a significant role in improving the reducibility of the burden. K.
Jan 21, 2014 . Method to improve the iron production rate in a blast furnace being charged by .. iron ore pellets when used in a blast furnace reduces the coke and fuel . rate, in such a way that does not alter the fired pellet reducibility or.
. ore as a raw material for the blast furnace, coke ovens that produce . ing agent rate in blast furnace in the future. The techni- . from CO2 generated by reduction of iron ore and fuel .. use of this sinter improved reducibility, a reducing agent.
Coke Reactivity, Iron ore Reducibility, Reducibility under load, Degradation, .. to set warm-up temperature (3 digits), temperature rise rate (2 digits) and maximum ... Many coke plants and blast furnaces around the world use CSR as a.
The first furnaces specifically made for smelting iron ore were low shaft furnaces: low box-like ... the hot blast is heated by the coke combustion, and aids in heat transfer to the burden. . breakdown at low temperatures during reduction, and good reducibility (8). In . times added to increase productivity and lower fuel rate.
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.
Finished steel consumption. 28. 61 . Blast Furnace with superior reducibility behaviour of pellets . Reduced specific consumption of Coke especially with PCI.
Mar 14, 2014 . It compares them with reducibility of other material such as iron ore and sinter. The . Keywords: iron, pellets, reduction, CO, blast furnace . significantly affects on the blast furnace operation and coke consumption [1,2].
Enhancement of Reduction Rate of Iron Ore by Utilizing Iron Ore/Carbon Composite .. Influence of Mixing Coal Composite Iron Ore Hot Briquettes on Blast Furnace . Influence of Ore Reducibility on Reaction Behavior of Ore Bed Mixed with Coal . and Molten Oxide on the Gasification Reaction of Coke and Biomass Char.
Keywords: Thermact-BF, Iron Ore, coke, Blast Furnace, Reduction. . in increasing the blast furnace productivity and decreasing the reducing agents rate . . additives all of which can affect the reducibility of iron oxides (Stephenson and.
The inferences of burden metallization rate on softening-melting dropping properties were . iron-bearing burden inside blast furnace is an important . that the innovation process based on ore-coke coupling ... 5 Hideki ON, Chikahito S, Tateo U. Effect of slag components on reducibility and melt formation of iron ore sinter.
Apr 28, 2013 . In the blast-furnace production of pig iron, the influence of wider hydrogen . Reduction of coke specific consumption. . findings about the possibilities of direct production of iron from ores by utilization of ... The base of the kinetic model was an idea to use the results of the ore reducibility test using the.
Modern blast furnace operation with low coke rate and high injection rate causes . Current research activities at IEHK aim at study of the reducibility of sinter mixed . coke on the reduction behaviour of different types of iron ore sinter and the.