limestone consumption in blast furnace

limestone consumption in blast furnace

Dec 12, 2014 Limestone is used mainly in the iron making part of steel production where it is added to the iron ore before entering the blast furnace. The limestone reacts with acidic impurities called slag .pellets, and sinter in blast furnaces with subsequent refining of molten iron and scrap in oxygen-blown processes. The electric furnace is used to make steel, stainless steels, ferroalloys, and special alloys, whereas ferromanganese is often made in blast fur- naces.

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Limestone Consumption In Blast Furnace

Blast furnace gas is produced during the iron oxide reduction in blast furnace iron making in which iron ore, coke and limestone are heated and melted in a blast furnace and is an indigenous process gas of the steelworks industry (Pugh et al., 2013). due to the reduced coke consumption in the blast furnace.

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What is the purpose of limestone in a blast furnace? - Quora

limestone is used to remove impurities in the furnace and the main impurity of the blast furnace is silica (sand and rock) which is silicon dioxide. silicon dioxide is a solid at furnace temperatures so it reacts with calcium oxide from the decomposition of limestone (CaCO3). this result into the formation of calcium silicate (CaSiO3) or slag which is a liquid. slag flows to the the bottom of the furnace where it floats

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limestone consumption in blast furnace

In the blast furnace burden (consists of iron ore sinter/pellets +coke +limestone/lime) at 298K is ... Coke consumption varies from 500 550 kg/ton of hot metal. Coke consumption

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limestone consumption in blast furnace

Read more Blast furnace slag granulation .Review Production and Development of Large Blast Furnaces .consumption of blast furnace. The average blast volume of one ton hot metal, oxygen enrichment rate, blast tempera-ture and the top gas temperature were 1039.14 m3, 3.56%, 1 212.27 C and 176.11 C, respectively (Fig. 2). The oxygen enrichment rate of ShaCoke Consumption - an

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Limestone Consumption In Blast Furnace

Limestone Consumption In Blast Furnace Feed Back Novel model for estimation of liquid levels in the blast furnace hearth limestone for blast furnace so. Toggle navigation. TYSERVICE Provide professional solutions. Home; Products; Contact Us; European Type Jaw Crusher. 18/09/2015; 10 Comments; Super User ; 3 Tags; European Type Jaw Crusher is a new crushing machine, the jaw

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Limestone For Blast Furnace - MC World

limestone is used to remove impurities in the furnace and the main impurity of the blast furnace is silica (sand and rock) which is silicon dioxide. silicon dioxide is a solid at furnace temperatures so it reacts with calcium oxide from the decomp...

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RECOMMENDED GUIDELINE FOR IRON STEEL SECTOR

In the Blast Furnaces (BF) liquid iron (popularly termed as ‘Hot Metal’) is produced by the process of reduction at high temperature from raw materials like iron ore, base mix, sinter, coke, fluxes (limestone / quartzite), etc. also air blast / O2. In blast furnace the process is also known as

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CALCULATION OF BLAST FURNACE PARAMETERS -

17/04/2020  A blast furnace is a type of metallurgical furnace used for smelting to produce pig iron. Here is the calculation of BF parameters. A. To A scertain Direct Indirect Reduction. METHOD:1. Given : 1.Blast Volume= 36000 NM3/hr, 2. Hot metal production=465 M.T.,

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Production of High-Carbon Ferromanganese in Blast Furnace

14/11/2013  Slaging components (dolomite or limestone) can be added to the sintered or pelletized ore, which result in cost savings in the blast furnace. Partial reduction of the higher manganese oxides may also occur during sintering. Blast Furnace Operation In comparison to iron making, high gas temperatures are required in ferromanganese production because the reduction of manganese (II)

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Limestone Consumption In Blast Furnace

Blast furnace gas is produced during the iron oxide reduction in blast furnace iron making in which iron ore, coke and limestone are heated and melted in a blast furnace and is an indigenous process gas of the steelworks industry (Pugh et al., 2013). due to the reduced coke consumption in the blast furnace.

More

limestone consumption in blast furnace

Lecture 26: Iron making in blast furnace Contents Preamble ... - nptel. Blast furnace iron making is an example in which both unit processes that is ... In the blast furnace burden (consists of iron ore sinter/pellets +coke +limestone/lime) at 298K is ... Coke consumption varies from 500 550 kg/ton of hot metal. Read more

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Various raw material used in blast furnace – blastfurnance

12/03/2015  The limestone is the most popular flux in blast furnace and sintering process. The limestone charged in the blast furnace must be in lumps (25-60 mm across), firm, not prone to fines and most important, free from harmful sulphur, phosphorus and silica. The physical and chemical properties of different flux and additives are as below.

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Lecture 26: Iron making in blast furnace

Blast furnace operation In the blast furnace burden (consists of iron ore sinter/pellets +coke +limestone/lime) at 298K is charged from top. During its descent, there occurs heat and mass exchange with the hot gases which are moving up. Hot gases comprise of CO,CO 6 and N 6. Thus blast furnace is a counter‐ current heat and mass

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Flux Lime - 911 Metallurgist

25/05/2017  The blast furnace uses both high calcium and/or dolomitic limestone. A few trials have been made using iron oxide stabilized dolomitic lime in an attempt to reduce coke consumption and to increase the production rate. The trials were very successful but would not be economical, except in periods of coke shortages, with resulting extremely high coke cost and exceptionally high hot metal

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The carbon cost of Slag production in the blast furnace

limestone consumption are added into iron making plant model . Results 16/4/2015 4th Slag valorization symposium Leuven 10 • For 5 different BF the real CO2 impact was calculated using a differential reasoning • Result is remarkably robust and independent of the raw material mix used (sinter, pellets, lump ore) • Application of correction seems to effectively account for the impact of ...

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CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

the blast furnace T at Bhilai (SAIL Plants) has shown that the parameters, specific consumption of sinter and weight of limestone in the burden were closely correlated: 20 kg. of carbon ITHM can be saved by eliminating 100 kg raw limestone from the burden [R P Bhagat, H.S.Ray, S.K.Gupta: ISIJ International, Vol.31 (1991), p.669-676.]. In view of the fact that the capacity of sintering plants ...

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RISK ASSESSMENT FOR BLAST FURNACE USING FMEA

Blast furnace plays a vital role in an integrated steel plant for producing pig iron which is then converted into various grades of steel in an electric arc furnace. Raw materials like iron ore, coke, limestone are charged at the top of the blast furnace through skip car system. Coke is almost pure carbon act as a fuel as well as reduces the iron ore into pig iron. Hot air from stove is ...

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Production of High-Carbon Ferromanganese in Blast

14/11/2013  Slaging components (dolomite or limestone) can be added to the sintered or pelletized ore, which result in cost savings in the blast furnace. Partial reduction of the higher manganese oxides may also occur during sintering. Blast Furnace Operation In comparison to iron making, high gas temperatures are required in ferromanganese production because the reduction of manganese (II)

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CALCULATION OF BLAST FURNACE PARAMETERS -

17/04/2020  D. Requirement of blast furnace gas for heating the stove. Requirement: Hot blast temperature 850° c during the volume of blast at the rate of 34000 cu m / hr. Given : Density of air = 1.3 kg / cu m Specific heat of air = 0.337 Calorific value of gas = 720 k cal / cu m. Cold blast

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Limestone Consumption In Blast Furnace

Blast furnace gas is produced during the iron oxide reduction in blast furnace iron making in which iron ore, coke and limestone are heated and melted in a blast furnace and is an indigenous process gas of the steelworks industry (Pugh et al., 2013). due to the reduced coke consumption in the blast furnace.

More

Various raw material used in blast furnace – blastfurnance

12/03/2015  The limestone is the most popular flux in blast furnace and sintering process. The limestone charged in the blast furnace must be in lumps (25-60 mm across), firm, not prone to fines and most important, free from harmful sulphur, phosphorus and silica. The physical and chemical properties of different flux and additives are as below.

More

Flux Lime - 911 Metallurgist

25/05/2017  The blast furnace uses both high calcium and/or dolomitic limestone. A few trials have been made using iron oxide stabilized dolomitic lime in an attempt to reduce coke consumption and to increase the production rate. The trials were very successful but would not be economical, except in periods of coke shortages, with resulting extremely high coke cost and exceptionally high hot metal

More

FURNACE AT BHILAI STEEL PLANT PERFORMANCE ANALYSIS OF A BLAST

blast furnace number X at the Bhilai Steel Plant over a period of sixteen years with the special reference to the quality and consumption of sinter. The variation in basicity and consumption of sinter, for the blast furnace data considered, is wide. The range of data covers high level to almost nil amount of raw limestone in the burden ...

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Lecture 26: Iron making in blast furnace

Blast furnace operation In the blast furnace burden (consists of iron ore sinter/pellets +coke +limestone/lime) at 298K is charged from top. During its descent, there occurs heat and mass exchange with the hot gases which are moving up. Hot gases comprise of CO,CO 6 and N 6. Thus blast furnace is a counter‐ current heat and mass

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Role of Ferrous Raw Materials in the Energy Efficiency of ...

Maximized recycling of BOF slag reduces limestone consumption in the blast furnace and is subject to limitations in build-up of recirculating elements. BF dust rate has been reported to increase in pellet-briquette burdens compared to sinter operations that warrants further investigation to establish cause and possible mitigation techniques. References . 1) Y. Kim and E. Worrel: Energ. Policy ...

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CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

the blast furnace T at Bhilai (SAIL Plants) has shown that the parameters, specific consumption of sinter and weight of limestone in the burden were closely correlated: 20 kg. of carbon ITHM can be saved by eliminating 100 kg raw limestone from the burden [R P Bhagat, H.S.Ray, S.K.Gupta: ISIJ International, Vol.31 (1991), p.669-676.]. In view of the fact that the capacity of sintering plants ...

More

RISK ASSESSMENT FOR BLAST FURNACE USING FMEA

Blast furnace plays a vital role in an integrated steel plant for producing pig iron which is then converted into various grades of steel in an electric arc furnace. Raw materials like iron ore, coke, limestone are charged at the top of the blast furnace through skip car system. Coke is almost pure carbon act as a fuel as well as reduces the iron ore into pig iron. Hot air from stove is ...

More

Blast Furnace gas generation and usage – IspatGuru

18/03/2013  Fig 1 Simple view of blast furnace operation. During the production of hot metal (HM) in the blast furnace, hot air blast is blown into the furnace through the tuyeres. O2 contained within the hot air blast reacts with carbon (in the form of coke) to produce carbon di-0xide (CO2) and carbon mono oxide (CO), as per the equations (i) C + O2 = CO2, and (ii) CO2 + C = 2CO. The gas produced by this ...

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Why Use Coke for Blast Furnace Ironmaking not Use

06/10/2019  In blast furnace ironmaking coal is not as strong as coke, and crushing will cause a decrease in the permeability of the blast furnace. The calorific value and carbon content of some anthracite coals are higher than coke, but there are more harmful impurities such as phosphorus and sulfur in coal. As the combustion enters molten iron, the quality of subsequent steel will be affected.

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Various raw material used in blast furnace – blastfurnance

12/03/2015  The limestone is the most popular flux in blast furnace and sintering process. The limestone charged in the blast furnace must be in lumps (25-60 mm across), firm, not prone to fines and most important, free from harmful sulphur, phosphorus and silica. The physical and chemical properties of different flux and additives are as below.

More

limestone used in blast furnace - hotelfortunepatna

Limestone Used In Blast Furnace. Limestone Used In Blast Furnace 201546ensp0183enspblast furnaces are used for extracting fairly reactive metals e.g. iron, zinc by reducing the metal oxide with carbon. iron extraction from its oxides iron is extracted from haematite and magnetite different oxides

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Blast Furnace Limestone - mayukhportfolio.co

limestone consumption in blast furnace. Blast Furnace. A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron, but also others such as lead or copper. Read more. limestone consumption in blast furnace. What Is a Blast Furnace? (with picture) - wiseGEEK: clear . A blast furnace is a piece of equipment that's used in iron smelting. The ...

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Flux Lime - 911 Metallurgist

25/05/2017  The blast furnace uses both high calcium and/or dolomitic limestone. A few trials have been made using iron oxide stabilized dolomitic lime in an attempt to reduce coke consumption and to increase the production rate. The trials were very successful but would not be economical, except in periods of coke shortages, with resulting extremely high coke cost and exceptionally high hot metal

More

FURNACE AT BHILAI STEEL PLANT PERFORMANCE ANALYSIS OF A BLAST

blast furnace number X at the Bhilai Steel Plant over a period of sixteen years with the special reference to the quality and consumption of sinter. The variation in basicity and consumption of sinter, for the blast furnace data considered, is wide. The range of data covers high level to almost nil amount of raw limestone in the burden ...

More

Lecture 26: Iron making in blast furnace

Blast furnace operation In the blast furnace burden (consists of iron ore sinter/pellets +coke +limestone/lime) at 298K is charged from top. During its descent, there occurs heat and mass exchange with the hot gases which are moving up. Hot gases comprise of CO,CO 6 and N 6. Thus blast furnace is a counter‐ current heat and mass

More

Blast Furnace: Introduction, Definition, Construction ...

21/05/2020  The fuel contains a mixture of flux that is particularly limestone where iron ore is available, and coke is supplied and pumped through the top of the furnace. On the other hand, the bottom of the furnace is attached with a series of parallel pipes that transfer hot blast air which is enriched with oxygen. As soon as the hot air is allowed to enter, the oxide ore is reduced to convert it into ...

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ore sintering consumation in blast furnace,hydraulic ...

24/03/2020  [AKBiswas: Principles of blast furnace iron making':Theory and Practice (1981), Cootha PublHouse, Australia, Ch VI] The statistical analysis of the performance data of the blast furnace T at Bhilai (SAIL Plants) has shown that the parameters, specific consumption of sinter and weight of limestone in the burden were closely correlated: 20 . Iron Ore Sinter an overview ScienceDirect

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Prediction of the Blast Furnace Process by Mathematical Model

furnace as well as fuel consumption and furnace pro-ductivity whenan operational action is taken (a case). This modelcanbeusedto analyse the thermal conditions in the blast furnace whensomeoperational parameters fluctuate and to predict the thermal conditions as well operational indices for someselected cases. Theprediction modelhas beenprogrammedin ANSI FORTRAN77 and inplemented in Nord ...

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Blast Furnace gas generation and usage – IspatGuru

18/03/2013  Fig 1 Simple view of blast furnace operation. During the production of hot metal (HM) in the blast furnace, hot air blast is blown into the furnace through the tuyeres. O2 contained within the hot air blast reacts with carbon (in the form of coke) to produce carbon di-0xide (CO2) and carbon mono oxide (CO), as per the equations (i) C + O2 = CO2, and (ii) CO2 + C = 2CO. The gas produced by this ...

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