reducibility of iron ore and coke rate in blast furnace

study on softening and dropping properties of metalized burden .

in blast furnace with implement of sponge iron production process with rotary hearth furnace [7-9]. Study shows that the innovation process based on ore-coke.

Modeling of Burden Distribution in the Blast Furnace - Doria

coke and hot blast into liquid iron, hot metal, which is used for steelmaking. . control of the burden and gas distribution in the blast furnace. ... The heat and mass transfer equations and expressions for the rates of .. pellet (agglomerated ore) operation owing to its high reducibility, but pellets have lower repose angle,.

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.

reducibility of iron ore and coke rate in blast furnace,

Pellet Reduction Properties under Different Blast Furnace . - LKAB

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.

Some aspects on the reduction of olivine pellets in . - DiVA portal

furnace. The reduction of iron ore pellets in the experimental blast furnace . smoother blast furnace operation with a potential for a lowered fuel rate. . Evaluation of reducibility and reduction strength of burden materials taken from the LKAB .. optimisation of mixing of charge materials (sinter, pellets, briquettes and coke),.

Iron Ore Pellets: North America, BF and DR Grade, Supply and Quality

Oct 2, 2013 . 3rd COREM Symposium on Iron Ore. Pelletizing Sept. 29 – Oct. . NAFTA Blast Furnace Pellet Balance. 2012 .. reducibility, sticking tendency determine DR furnace . increase in coke rate, loading of oversized ore, kg/T kg/T.

reducibility of iron ore and coke rate in blast furnace,

Factors affecting Coke rate in a Blast Furnace | ispatguru

Jun 29, 2014 . The reducing gas flows upwards reducing the iron bearing burden . Coke rate is the parameter for the consumption of BF coke which is .. The first one is iron bearing materials which are sinter, pellets and calibrated iron ore (CLO). . Further the burden materials are to have high reducibility to promote.

Pyroxenite, Olivine, Swelling, Magnesioferrite, RDI, Iron ore pellets

Abstract Indian iron ore fines with high alumina content (~2.5% Al2O3) resulted in poor quality pellets and a study was . Fired pellets were tested for their strength, RDI, reducibility and swelling. . the use of fluxed pellets in blast furnace due to their good strength ... reduction in the blast furnace resulting in lower coke rate.

reducibility of iron ore and coke rate in blast furnace,

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.

1 BACKGROUND

than coke, cold oxygen rather than heated blast air and that the Corex separates the . The blast furnace remains an important part of modern iron production. .. The size of the lumps and the inherent reducibility of the ores must match if a .. relatively slower reduction rate of natural magnetite vs hematite, hematite is the.

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

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.

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.

Quality Improvement of Sintered Ore in Relation to Blast Furnace .

High productivity operation of a blast furnace requires enhancing reducibility and improving reduction . first dripping of iron ore from a graphite crucible) and the composi- .. ficient as high as 2.37 t/d/m3 and a high ore/coke rate of 4.87 with.

Characterisation of the Physical and Metallurgical Properties of .

Jun 10, 2012 . The blast furnace is still the dominant form of iron production, but over . In addition, porosity, thermoanalysis, and reducibility tests were performed. . throat, are coke, lump ores, and agglomerated ores in the form of sinter or pellets. . Heating was performed at a constant rate of 10°C/min, from 20°C up to.

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.

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.

Application of High Ratio Coke Mixed Charging Technique to Blast .

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.

Study the effect of catalyst (THERMACT-BF) on reduction behavior .

Keywords: Thermact-BF, Iron Ore, coke, Blast Furnace, Reduction. . in increasing the blast furnace productivity and decreasing the reducing agents rate [11]. . additives all of which can affect the reducibility of iron oxides (Stephenson and.

CHAPTER-11 FUNDAMENTALS OF IRON ORE . - EprintsNML

productivity and saving in coke rate to the blast furnace. .. held and simplistic view that sinter feeds containing iron ores with high ultra-fines content have ... Table 11.1: Reducibility and compression resistance of sinter minerals. Constituents.

Reduction of Pellets‐Nut Coke Mixture under Simulating Blast .

Aug 20, 2010 . Reduction of Pellets‐Nut Coke Mixture under Simulating Blast . carried out to decrease the coke losses of the blast furnace through mixing . In order to clarify the influence of nut coke on the pellets reducibility, industrial iron ore pellets were . The rate controlling mechanism of pellets and pellets‐nut coke.

Factors affecting Coke rate in a Blast Furnace | ispatguru

Jun 29, 2014 . The reducing gas flows upwards reducing the iron bearing burden . Coke rate is the parameter for the consumption of BF coke which is .. The first one is iron bearing materials which are sinter, pellets and calibrated iron ore (CLO). . Further the burden materials are to have high reducibility to promote.

BLAST FURNACE TESTS WITH COKES OF DIFFERING REACTIVITY

Pig iron is produced in blast furnaces by heating and reducing iron ore with furnace coke anti . 1) Coke rate reduction of 44 pounds per ton of hot metal. 2) Blast.

reducibility properties of erdemir samples a thesis submitted . - METU

. for Erdemir samples. Keywords: Reducibility, RDI, pellet, sinter, lump ore, modeling ... grading as that charged to the furnace using gas flow rates, temperatures, and gas ... the column of ferrous burden, coke and fluxstone in a blast furnace.

Current Progress on COURSE50 Project - ieaghg

Apr 16, 2018 . •Coal is used to reduce iron ore in steelmaking process. •Even with .. reducibility of iron ore when . Hydrogen Reduction Rate (%) . Coke. Waste heat. Blast furnace. H2 reduction of iron ore. Catalytic chemical reaction. H. 2.

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.

Iron Ore Sintering: Quality Indices: Mineral Processing and .

May 17, 2017 . Blast furnace operators require sinter with homogenous and regular properties ... The reducibility of mineral phases in decreasing order is: ... alumina iron ores presented high Tumbler strength and low coke rate, but RDI.

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).

Characterisation of the Physical and Metallurgical Properties of .

Jun 10, 2012 . The blast furnace is still the dominant form of iron production, but over . In addition, porosity, thermoanalysis, and reducibility tests were performed. . throat, are coke, lump ores, and agglomerated ores in the form of sinter or pellets. . Heating was performed at a constant rate of 10°C/min, from 20°C up to.

Chemical, Mineralogical and Metallurgical . - IJARIIT Journal

Keywords: Abrasion Index, Ferrites, Goethite Ich Iron ore, Reducibility Index, Reduction . These days many blast furnaces are using even more quantity of sinter. .. outside the furnace and thus reduces the coke rate (Singh and Deo, 1995).