Enhancement of Iron Ore Sinter Reducibility through Coke ...

Enhancement of Iron Ore Sinter Reducibility through Coke Oven Gas Injection into the Modern Blast Furnace ... In order to clarify the effect of COG injection on the reduction processes in the blast furnace; iron ore sinter was isothermally and non-isothermally reduced with different gas compositions at different temperature. ... In order to ...

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

Reducibility and Coke Reactivity on Blast Furnace Operation ... ties of the iron ore and coke. The reducibility of iron ore and the ... all coke rate due to the iron ore having a higher degree of

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Innovative Uses of Hydrogen in Steelmaking

Innovative uses of Hydrogen in Steelmaking. I. The 2 Routes to Steelmaking I. Blast Furnace -> Basic Oxygen Furnace (BF/BOF) II. Electric Arc Furnace (EAF) I. Scrap II. Scrap Supplements ... Coal. O2. Scrap/HBI. 1500 °C Liquid ‘Hot Metal’ Blast. Furnace. sinter. Lump Iron Ore Fine Iron Ore. Coke fuel reductant structure. Option: 1 2 3. EAF.

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mushroom formation in blast furnace - elkanahschool.co.za

The blast furnace is an efficient high-temperature reactor in which hot reducing gases formed from the combustion of coke and supplementary fuels in the raceway zone travel counter-current to the burden materials including iron ore, coke and fluxes charged in from the top.

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EFFECT OF SIZE OF IRON ORE PELLETS ON ITS REDUCTION …

EFFECT OF SIZE OF IRON ORE PELLETS ON ITS REDUCTION KINETICS ... various factors which affect the reducibility of th e iron ore pellet. In our project we aim at ... · As a result of introduction of pellets in the Ijamu din blast furnace a coke rate decreases of 20-22 kg/tonne was expected.

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Analysis of factors that limit the production rate and ...

An engineering analysis indicates that the coke rate in present blast-furnace practice is set not by chemical or thermal needs but to give ... Maximum ore size is probably limited by chemical reducibility rather than by heat transfer. ... Some Comparisons between Iron Ore, Sinter, and Nodules as Blast-furnace Feed. Proceedings ...

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FURNACE AT BHILAI STEEL PLANT PERFORMANCE ANALYSIS …

blast furnace number X at the Bhilai Steel Plant over a period of sixteen years with ... carbon rate and slag volume of a blast furnace (number X of Bhilai ... quality of the other raw materials. For example, variation in coke ash and alumina in iron ore etc. are restricted …

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

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 t/d/m3 and a high ore/coke rate of 4.87 with a PCR of 161 kg/t-pig11). 3.2 Improvement of blast furnace operation by ...

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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…

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Use of Iron Ore Pellets in Blast Furnace Burden ...

Jun 13, 2014· Use of Iron Ore Pellets in Blast Furnace Burden ... process of converting iron ore fines into ‘uniformed sized iron ore pellets’ that can be charged directly into a blast furnace. Fig 1 shows iron ore pellets. ... ISO 4695 / Reducibility: Reduction rate at 40 % reduced: Reducibility:

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

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

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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).

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Iron and Steel - Converting by-products to feedstock - Steele

He faced rising costs for iron ore and coke, the primary burden material for his blast furnaces. Fortunately, he has ready access to fines from his DRI process, as well as a wet, carbon-rich LD sludge and blast furnace dust from a neighboring steel mill.

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Reduction of Coke Rate from 428 kg/thm to 408 kg/thm at ‘I ...

Blast Furnace Objective •Reduce the Cost of Hot Metal Iron Making Objective •Reduce the cost of Divisions Product Corporate Objective •Increasing the savings by INR 2000 Cr 60 % of Cost of Hot metal is incurred through Coke & Coal consumption in Blast Furnace 1 2 Reduction of Coke Rate will impact the Perceived Opportunity –Reduction of Hot

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blast furnace sinter lump rate - print-flyers.co.za

How it works: The Blast Furnace. ... reducibility of iron ore and coke rate in blast furnace. Blast Furnace Sinter Lump Rate - stundengebet.eu. ... Limestone for Blast Furnace relationship of sinter in blast furnace coke rate. ... fed to the blast furnace in the form of raw ore (lump), pellets or sinter.

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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.

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Development of Ferro-Coke Process for Mitigating CO2 ...

Metallic iron Carbon(coke) Binder Ore particle Coal particle ... ・Improve sinter reducibility ... Ferro-coke Coke Blast furnace Inner reaction simulator 30% of conventional coke was replaced with Ferro-coke. Different mixing conditions with Ferro-coke were tested.

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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 ores, and agglomerated ores in the form of sinter or . ... reducibility of iron ore and coke rate in blast furnace Influence of nut coke on iron ore sinter reducibility .

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Blast Furnace Iron production - briket-brex.ru

Dec 11, 2016· In the process of oxidative firing sulfur and iron content has decreased, in the briquettes it was 90% of the original iron content in the ore. Porous briquettes had high reducibility, and their use has led to a reduction of Coke rate and to the growth of the furnaces productivity.

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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.

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reducibility of iron ore and coke rate in blast furnace

(Reducibility Index) ... furnace hanging and increases coke rate in blast furnace. ... quality sinter will be replaced with iron ore in blast furnace, maximum Contact Supplier reducibility of iron ore and coke rate in blast . reducibility of iron ore and coke rate in blast furnace reducibility of iron ore and coke rate in blast furnace.

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Blast Furnace Burden Preparation with - [email protected]

Blast Furnace Burden Preparation with Reference to High Ash Coke R. F. Jennings, ... permits high blowing rates. (e) Reducibility varies with sinter composition ... coke breeze used for sintering as equal to that of blast furnace coke there was still a net saving of 112 kg /ton of pig iron.

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Recent Progress in Ironmaking Technology for 2 Mitigation ...

tion of the blast furnace coke rate, and accompanying this, reduction of total carbonization heat. ... reducibility index, RI, improves by approximately 3%, and unit consumption of the bonding agent decreases by 3 kg/t. From the viewpoint of enthalpy balance, the ... den (iron ore), decrease in permeability due to enlarge-ment of the cohesive ...

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MATHEMATICAL MODELLING OF A BLAST FURNACE …

consumer properties of the prepared iron ore raw materials (1). Reducibility is ability of iron ore material to give oxygen from ferrous oxide to reducing gas with greater or smaller velocity. Its role increases in process of blast furnace improving and the coke rate reduction. Reducibility is defined as the attitude of weight of the taken

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Reducibility Of Iron Ore And Coke Rate In Blast Furnace