reducibility of iron ore and coke rate in blast furnace

Pellet Reduction Properties under Different Blast Furnace . - LKAB

blast furnace process and the conditions for iron oxide reduction. Changes in ... velocities caused by the increase in ore-to-coke ratio and the more fine-grained .. other hand play a significant role in improving the reducibility of the burden. K.

The utilisation of iron ore fines : Technical options and challenges .

The use of iron ore sinter in a modern day blast furnace has become common . furnace and DRI units in view of better metallurgical properties e.g. high reducibility, .. The use of CPR Pellets minimizes coke rate due to its metallic iron content.

Iron, 2. Blast Furnace Process - Lüngen - - Major Reference Works .

Oct 15, 2011 . Appropriate burden distribution with respect to both ore : coke ratio and .. blast furnace operation are reducibility and reduction disintegration.

study on softening and dropping properties of metalized burden .

iron-bearing burden inside blast furnace is an important index in ironmaking . that the innovation process based on ore-coke coupling reaction is expected to.

reducibility of iron ore and coke rate in blast furnace,

Iron Ore Materials and Coke Quality Characteristics . - Science Direct

The coke consumption in blast furnace smelting make about 40. % of costs for pig-iron . The reducibility of the iron ore materials is the major quality index which is . and to provide the minimal carbon rate on the gasification reaction of the.

Enhancement of Iron Ore Sinter Reducibility through Coke Oven .

Enhancement of Iron Ore Sinter Reducibility through Coke Oven Gas Injection into . The results were compared to that obtained under typical blast furnace conditions . The rate controlling mechanism of sinter under different conditions was.

Influence of reducibility (1) and durability (2) on the coke rate .

One of the most effective ways of iron-making technical progress is the iron ore materials and coke physicochemical. | Blast Furnace, Coke and Iron Ore.

mathematical modelling and optimisation of iron ore . - CiteSeerX

fed to the blast furnace in the form of raw ore (lump), pellets or sinter. In current . The main aim of iron ore sintering is to produce a strong and reducible .. without coke or fluxes, basicity (ratio of CaO to SiO2 by mass), loss of mass during.

ICSTI-12 A report on the international ironmaking conference

Mar 2, 2013 . charcoal blast furnace ironmaking and iron ore flotation technology. . towards building larger blast furnaces (Fig 1) while developments . iron (coke rate <300kg/t and PCI at 200kg/t). Progress in this at ... iron ore reducibility;.

The Reducibility of the Iron Ore Materials as Instrument of the Coke .

The technique of defining the minimum coke consumption in blast furnace smelting . In this reserve the constitutive role belongs to the reducibility of the iron ore.

IRON ORE SINTERING PART 2. QUALITY INDICES AND .

Key words: Sintering, Quality indices, Productivity, Blast furnace . Sinter reducibility, and sinter quality in general, improves with a higher level of hematite . FeO can provide an indication of sintering conditions, in particular the coke rate [3].

Reducibility and reduction swelling behaviour of some iron ore .

Iron ore pellets are used for the production of hot metal in blast furnaces and DRI/HBI in direct . (pellets, sinters and/or lump ore), reducing agents (metallurgical coke) and additives (line, quartz, BOF slag). . Total gas flow rate 10 l/min.

Development of new burden for blast furnace operation . - ieaghg

Nov 6, 2013 . consumption of blast furnace by using RIST diagram*. * M. Naito et al. . Close arrangement of coke and iron oxide results in high reactivity.

Effect of Fluxing Agents on the Quality and Microstructure of .

Jun 1, 2017 . Indian iron ore fines with high alumina content (~2.5% Al 2 O 3 ) resulted in . Fired pellets were tested for their strength, RDI, reducibility and swelling. . in the blast furnace resulting in lower coke rate and high productivity.

reducibility of iron ore and coke rate in blast furnace,

Sinter Plant - MECON Limited

RI (Reducibility Index). 65 - 70 . continuous furnace hanging and increases coke rate in blast furnace. If FeO is less, sinter will be weak . Normally we get iron ore fines that is having 100 mesh (- 0.15 mm micro fines) minimum of 25 % and 15.

Iron and Steelmaking - VŠB

Directly reduced iron is a product of iron (steel) direct reduction from ores in the solid .. Reducibility – a summary of raw material properties which determine the rate of . Blast furnace coke is the prevailing fuel in production of pig iron.

reducibility of iron ore and coke rate in blast furnace,

Reducibility and reduction swelling behaviour of some iron ore .

Iron ore pellets are used for the production of hot metal in blast furnaces and DRI/HBI in direct . (pellets, sinters and/or lump ore), reducing agents (metallurgical coke) and additives (line, quartz, BOF slag). . Total gas flow rate 10 l/min.

Paper

blast furnace process including the possible minimal coke rate in theory is . Reducibility is ability of iron ore material to give oxygen from ferrous oxide to.

1. Kobe Steel's Blast Furnace Operation Technology

Aug 21, 2008 . the latest Japanese company to commence blast furnace iron- making, has confronted . Iron ore and a reductant, such as coke (coal baked in lumps), are . to raise thermal efficiency and increase the reducibility of iron ore is to . ratio of 20% lump ore, 30% iron ore pellets and 50% sintered ore. However.

reducibility of iron ore and coke rate in blast furnace,

Minimization of Blast furnace Fuel Rate by Optimizing . - OSTI

Aug 15, 2012 . Figure 77 Effect of natural gas injection rate on coke reaction . .. The blast furnace process converts iron ore into molten iron and is an important component in iron-steel making .. of reducibility experiments were conducted.

effect of size of iron ore pellets on its reduction kinetics - ethesis

various factors which affect the reducibility of the iron ore pellet. In our project we .. As a result of introduction of pellets in the Ijamudin blast furnace a coke rate.

for blast furnace - VSSUT

(b)Sinter or pellets from fines(less than 8 mm) iron ore. Fuel(thermal . 2-fuel rate 450-470 kg/thm(270-275 coke and 175-225 kg of coal). 3-productivity levels .. More is the slag bond stronger is the sinter but with less reducibility and more is.

Ironmaking, reduction of iron oxide - nptel

Key words: Ironmaking, reduction of iron oxide, material balance. Introduction . Consider a blast furnace which is charged with iron ore coke and flux of the following composition: . (Modern blast furnace operates with much lower coke rate).

Characterization of the burden behaviour of iron ore pellets mixed .

Aug 31, 2018 . In the blast furnace, nut coke is utilized in a mixture with the ferrous burden . In a blast furnace, the reduction of the ferrous burden (iron ore, .. were quenched in nitrogen gas atmosphere at the rate of 5oC/min. .. Influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions.

Book of Abstracts - Bestevent Management

Contents. HOW IRON ORE MELTS IN A BLAST FURNACE. PART 1: .. FERRITE OF CALCIUM AND ALUMINUM ON ITS REDUCIBILITY . ... by about 1,5% and reduces the metallurgical coke rate by 2-4 kg/tHM, while total fuel rate is reduced.

1 BACKGROUND

than coke, cold oxygen rather than heated blast air and that the Corex separates the melting and . pellets and iron ore and the ratio varies from furnace to furnace. Line . This highly reducible gas is forced upward through the charge.

1. INTRODUCTION The technique of sintering iron ore fines was .

fines, unsuitable for sintering and (ii) reduction of coke rate in the blast furnaces. In India there are large reserves of iron ore but the availability of coking coal is.

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