reducibility of iron ore and coke rate in blast furnace

(PDF) Enhancement of wüstite reducibility in blast furnace ...

The effects of iron ore reducibility and coke reactivity in the shaft region of a blast furnace are studied. A sensitivity analysis of varying reaction rates of ore and coke on gas utilization ...

CFD Investigation of the Effects of Iron Ore Reducibility ...

CFD Investigation of the Effects of Iron Ore Reducibility and Coke Reactivity on Blast Furnace Operation In this paper, a computational fluid dynamics (CFD) model is employed to investigate changes in ore and coke reaction rates in the shaft region of a blast furnace. The CFD analysis shows that a specified combination of the reaction rates of ore and coke significantly affects the solution ...

CFD Investigation of the Effects of Iron Ore Reducibility ...

Reducibility and Coke Reactivity on Blast Furnace Operation In this paper, a computational fluid dynamics (CFD) model is employed to investigate changes in ore and coke reaction rates in the shaft ...

The Coke and Iron Ore Materials Kinetic Characteristics ...

Reducibility is an ability of iron ore material to give oxygen from ferrous oxide to reducing gas with greater or smaller velocity. Its role increases in the process of blast furnace improving and the

What is coke rate in blast furnace - Answers.com

According to steel.nic.in; Coke Rate is measured in Kgs of BF Coke consumed per tonne of Hot Metal produced in the Blast Furnace(Kg/THM). By convention, this excludes coke (nut/pearl coke) mixed ...

Reducibility Of Iron Ore And Coke Rate In Blast Furnace

Reducibility Of Iron Ore And Coke Rate In Blast Furnace. Blast Furnace and Stoves - Eurotherm. Blast Furnace and Stoves. Blast Furnace . The raw materials for iron-making, iron ore, limestone and coke, . where the blast furnace gas flow rate is inferred by .

reducibility of iron ore and coke rate in blast furnace

Patent WO2003095682A1 - Method to improve iron production rate - reducibility of iron ore and coke rate in blast furnace,20 Nov 2003 Method to improve the iron production rate in a blast furnace being charged by to cause degradation of coke and iron ore agglomerates which results in rate, in such a way that does not alter the fired pellet ...

EFFECT OF SIZE OF IRON ORE PELLETS ON ITS REDUCTION KINETICS

in the reducibility of iron ore pellets. The most o ptimal size range for reducibility to be The most o ptimal size range for reducibility to be effective in industrial application is 10 mm to 20 mm.

Reducibility and reduction swelling behaviour of some iron ...

Iron ore pellets are used for the production of hot metal in blast furnaces and DRI/HBI in direct reduction processes. A blast furnace is a shaft furnace, which is charged with iron bearing materials (pellets, sinters and/or lump ore), reducing agents (metallurgical coke…

Using a Mathematical Model of Counter-Current Flow in a ...

Flow in a Blast Furnace to Evaluate Reducibility of Iron‐Ore‐Bearing Raw Materials Pavlina Pustejovska, Jiri Tuma, Vladimir Stanek, Jiri Kristal, Simona Jursova, and Jiri Bilik The systematic research of the properties of the ore charge for blast furnaces has been continuing forover 60 years in Czechoslovakia/Czech Republic and since1971 in the Iron and Steel Institute (ISI) at Dobrá ...

MATHEMATICAL MODELLING OF A BLAST FURNACE SMELTING BY ...

BLAST FURNACE SMELTING BY IMPROVING THE IRON ORE RAW MATERIALS AND COKE A.N. Dmitriev, Yu.A. Chesnokov, G.Yu. Arzhadeeva Institute of Metallurgy of UB RAS, 101, Amundsen st., Ekaterinburg, [email protected] Astract The iron ore raw materials and coke quality is the basic reserve of improvement of the blast furnace technology. Some of the quality indicators of iron ore raw materials and coke …

Blast furnace - Wikipedia

Blast furnaces differ from bloomeries and reverberatory furnaces in that in a blast furnace, flue gas is in direct contact with the ore and iron, allowing carbon monoxide to diffuse into the ore and reduce the iron oxide to elemental iron mixed with carbon.

Metallurgical Properties of the Brex and ... - SpringerLink

The reducibility study has been performed in accordance with Russian standards—GOST 28657-90 and GOST 21707-76 . The higher rate and higher degree of reduction in iron ore-concentrate-based brex results from the increased oxygen level of iron oxides in …

Iron Ore Materials and Coke Quality Characteristics and ...

One of the most effective ways of the technical progress in the blast furnace manufacture is improvement of physical and chemical characteristics the iron ore materials and coke that allows to increase the smelting of pig-iron and to reduce the coke specific consumption without building of new blast furnaces and concentrating plants.

blast furnace the processing of iron ore - thebakerytorino.it

Iron is made by reacting iron ore (iron oxide and impurities), coke (a reductant) and limestone (CaCO 3) in a blast furnace. Iron ores with lower iron content such as taconite are first processed to concentrate the iron level and drive off volatile impurities.

Application of High Ratio Coke Mixed Charging Technique to ...

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-

reducibility of iron ore and coke rate in blast furnace

Request PDF on ResearchGate | CFD investigation of the effects of iron ore reducibility and coke reactivity on blast furnace operation | In this paper, a Computational Fluid Dynamics (CFD) model is employed to investigate changes in ore and coke reaction rates in the shaft region of a blast furnace.

Influence of nut coke on iron ore sinter reducibility ...

Influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions E. A. Mousa *, D. Senk, A. Babich and H. W. Gudenau One of the most important factors to increase the economic efficiency of the blast furnace process is to reduced coke losses (undersieve product known as nut coke). In recent years there has been increased interest in mixing nut coke in the sinter ...

Improving reducibility of iron ore pellets by optimization ...

Reducibility of iron bearing material is an important property which represents its suitability of reduction in iron making furnaces. It has direct influence on improving productivity and lowering energy consumption in iron making process.

reducibility of iron ore and coke rate in blast furnace

influence of sinter on coke rate of blast furnace. reducibility of iron ore and coke rate in blast furnace. Jun 10, 2012 The blast furnace is still the dominant form of iron production, but over throat, are coke, lump [Get More]

UDC 622 . 785 . 5 : 669 . 162 . 26 . 012 . 4 Quality ...

*2 Hokkai Iron & Coke Corporation *3 Yawata Works Quality Improvement of Sintered Ore in Relation to Blast Furnace Operation Kenichi HIGUCHI*1 Yasushi TAKAMOTO* 1 Takashi ORIMOTO*1 Takehiko SATO*2 Fumio KOIZUMI*2 Kazuyuki SHINAGAWA*3 Hiroyuki FURUTA*3 Abstract High productivity operation of a blast furnace requires enhancing reducibility and improving reduction behavior at …

reducibility of iron ore and coke rate in blast furnace

Effect of adding line on the metallurgical properties of iron ore . Jun 5, 2015 . 1330 ± 20 °C at the highest for both pellet grades. A higher reducibility indicates more indirect reduction in the blast furnace, resulting in a lower coke rate and higher productivity.

Blast Furnace - an overview | ScienceDirect Topics

Blast furnace slag is a nonmetallic coproduct produced in the process in the production of iron from iron ore or iron scrap. It consists primarily of silicates, aluminosilicates, and calcium-alumina-silicates.

reducibility of iron ore and coke rate in blast furnace

Steel Works - Iron Ore Processing for the Blast Furnace. Iron Ore Processing for the Blast Furnace (Courtesy of the National Steel Pellet Company) The following describes operations at the National Steel Pellet Company, an ...

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

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 ...

Use of Nut Coke in a blast furnace | ispatguru.com

Use of Nut Coke in a blast furnace. Metallurgical coke is produced during the carbonization of coking coal blend in a coke oven battery. This coke is produced normally in three size fractions namely coke breeze (size – 10 mm), nut coke (size +10 mm to – 25 mm) and blast furnace (BF) coke (+ …

Blast Furnace Burden Preparation with - [email protected]

Blast Furnace Burden Preparation with Reference to High Ash Coke R. F. Jennings, A. M. Frankau THE primary objectives in iron smelting are high output, low coke, rate and smooth operation. The aspect of coke econonac is somewhat cotn-pleic »when working with an iron rich burden and a high ash coke since the ash of the coke contri-butes a major part of the total slag. Where, as in Tndia, the ...

Factors affecting Coke rate in a Blast Furnace | ispatguru.com

Factors affecting Coke rate in a Blast Furnace BF is a counter current reactor in which the reducing gas is produced by the gasification of the carbon of the BF coke with the oxygen of the hot blast injected via tuyeres in the lower part of the furnace.