Influence Of Sinter On Coke Rate Of Blast Furnace

Coke Rate - an overview | ScienceDirect Topics

In The Efficient Use of Energy (Second Edition), 1982. Industrial and Domestic Energy Consumption. In 1973 the largest industrial consumer, steel, used 11% of the world's energy. In the UK steady improvements in blast-furnace technology have reduced coke rate by 50% over the past 25 years and there are firm plans to achieve further gains in efficiency in ways which could well serve as examples ...

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Factors affecting Coke rate in a Blast Furnace – IspatGuru

Jun 29, 2014· Blast furnace coke rate reduces by around 2 % with the blast temperature increasing by 100 deg C. High top pressure also reduces the coke rate in the blast furnace. With every increase of top pressure of the blast furnace by 0.1 kg/sq cm there is a reduction of around 0.1 % in the coke rate.

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Influence of the coke and burden quality on the ...

Jul 26, 2005· Therefore, a careful monitoring of the coke and sinter quality is of prime importance. This paper describes the coke and sinter quality used in the Sidmar blast furnaces to control permeability of the furnace with long term PCI rates of 180 kg/tHM and coke rates around 300 kg/tHM.

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reducibility of iron ore and coke rate in blast furnace

Influence of nut coke on iron ore sinter reducibility . 2018-6-11 (2010). Influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions. Ironmaking Steelmaking: Vol. 37, No. 3, …

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Blast Furnace Operation - an overview | ScienceDirect Topics

Changes in porosity have a marked influence on the mechanical properties of the coke, which in turn affects the progress and efficiency of the blast furnace operation. The rate of mass transfer is slower than that of the chemical reaction, and, hence, the concentration of carbon dioxide decreases from the lump surface toward the center.

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Evaluation of Sinter Quality for Improvement in Gas ...

The calculation conditions of the 2-dimensional model of the blast furnace were similar to those of actual blast furnaces in Japan, i.e., furnace volume: 5500 m 3, productivity: 2.2 t/m 3-d, RAR: 500 kg/t, and PCR: 160 kg/t. Sinter having the properties of sinter (A) was used in the calculation.

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CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

super-fluxed sinter in order to incorporate the lime required for fluxing the acid constituents during the smelting inside a blast furnace. Other parameters which has influence on the coke rate and blast furnace productivity are (a) reduction properties (RDI/RI) of sinter, (b) Fe content in the sinter, and (c) fines in the sinter.

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Recycling of Blast Furnace Dust in the Iron Ore Sintering ...

Zinc in the charge of the blast furnace is mainly contained in the sinter. 16) The total amount of zinc in the charge is usually restricted to 100 g/t–150 g/t of hot metal produced 8) because zinc can form crusts in the upper part of the furnace and accumulates in the lining of the furnace which consequently deteriorates. 16,17) Zinc is also ...

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INTER-INFLUENCING FACTORS IN AFFECTING BF COKE …

A blast furnace (BF) is a multivariate system which is subjected to a large number of inter-influencing variables affecting its performance: productivity and coke rate. It is important to isolate the inter-influence before drawing any conclusions. It is essential to

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reducibility of iron ore and coke rate in blast furnace

Influence of nut coke on iron ore sinter reducibility . 2018-6-11 (2010). Influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions. Ironmaking Steelmaking: Vol. 37, No. 3, …

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

(2010). Influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions. Ironmaking & Steelmaking: Vol. 37, No. 3, pp. 219-228.

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Influence of the coke and burden quality on the ...

Therefore, a careful monitoring of the coke and sinter quality is of prime importance. This paper describes the coke and sinter quality used in the Sidmar blast furnaces to control permeability of the furnace with long term PCI rates of 180 kg/tHM and coke rates around 300 kg/tHM.

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Recycling of Blast Furnace Dust in the Iron Ore …

Recycling of Blast Furnace Dust in the Iron Ore Sintering Process: Investigation of Coke Breeze S ubstitution and the Influence on Off-gas Emissions Christof LANZERSTORFER,1)* Birgit BAMBERGER-STRASSMAYR1) ... is higher than the mass of coke breeze replaced. The rate of

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Blast Furnace Operation - an overview | ScienceDirect Topics

Changes in porosity have a marked influence on the mechanical properties of the coke, which in turn affects the progress and efficiency of the blast furnace operation. The rate of mass transfer is slower than that of the chemical reaction, and, hence, the concentration of carbon dioxide decreases from the lump surface toward the center.

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Why Chinese steelmakers are using less scrap in their ...

Scrap can be charged at a maximum rate of ~10% of the Fe burden A BF requires ~960 kg of Fe burden to produce 1 tonne of hot metal (i.e. 960 kg/thm) and, due to the respective Fe contents of sinter, lump and pellet, this typically requires a total of ~1.6 t of iron ore burden to be charged.

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Model Study of Blast Furnace Operation with Central Coke ...

Aug 02, 2019· Blast furnace (BF) remains the dominant ironmaking process worldwide. Central coke charging (CCC) operation is a promising technology for stabilizing BF operations, but it needs reliable and quantified process design and control. In this work, a multi-fluid BF model is further developed for quantitatively investigating flow-thermal-chemical phenomena of a BF under CCC operation.

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Blast furnace

A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper.Blast refers to the combustion air being "forced" or supplied above atmospheric pressure. [1]

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(PDF) Optimum nut coke for the iron making blast furnaces

Utilization of small coke in the blast furnace was carried out to improve the permeability in the lower part of the blast furnace. However, at high small coke rates, it was thought that some small ...

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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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(PDF) Blast Furnace Performance Under Varying Pellet ...

The Blast Furnace process showing various processes [12].Citation:Agrawal A and Dev M. Prediction of Hot Metal Temperature Using Multivariate Data Science Approach for Blast Furnace Iron Making ...

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STRATEGIES FOR THE PRODUCTION OF LOW SILICON …

source of silica input into the blast furnace in India is coke ash, which accounts for 70%. In a similar way, sulphur enters the furnaces through coke and due to higher coke rate in our furnaces, it is difficult to maintain basicity at the desired level. RSP blast furnaces do not have high top pressure which can favour low silicon hot metal.

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Influence of sinter basicity (CaO/SiO2) on low and high ...

Iron ore sinter, constituting a major proportion of blast furnace burden, significantly impacts the blast furnace performance. The chemical composition of iron ore fines, particularly alumina, sinter basicity and sinter MgO together with the thermal conditions that sinter blends are subjected to play an important role in the formation of mineral phases in sinter.

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how sinter pellet coke consumption

Smelting reduction processes are the latest development Coal consumption of the process is less Since no coke oven plant sinter or pellet plant are . Chat Online; Factors affecting Coke rate in a Blast Furnace ispatguru . Jun 29 2014 - Coke rate is the parameter for the consumption of BF coke which is .

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Reduction of Iron Ore Pellets, Sinter, and Lump Ore under ...

A blast furnace (BF) is the most common process for hot metal production in the world. The BF is charged with metallurgical coke and iron‐bearing materials separately, which leads to a layered structure. The iron‐bearing materials consist of iron ore pellets, lump ore, and sinter. When the charge material descends, it is reduced by CO and H ...

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reducibility of iron ore and coke rate in blast furnace

Influence of nut coke on iron ore sinter reducibility . 2018-6-11 (2010). Influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions. Ironmaking Steelmaking: Vol. 37, No. 3, …

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Operating experience with 100% pellet burden on Amanda ...

These changes included the shutdown of the hot strip mill which resulted in coke oven gas enrichment of the Amanda stoves and an increase of 75 C in hot blast temperature, transition to 100% continuous cast operation which resulted in increased variation of the hot metal demand, and the July idling of the sinter plant. Historically, the Amanda ...

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Model Study of Blast Furnace Operation with Central Coke ...

Aug 02, 2019· Blast furnace (BF) remains the dominant ironmaking process worldwide. Central coke charging (CCC) operation is a promising technology for stabilizing BF operations, but it needs reliable and quantified process design and control. In this work, a multi-fluid BF model is further developed for quantitatively investigating flow-thermal-chemical phenomena of a BF under CCC operation.

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Blast Furnaces - Hogan Steel Archive - Research Guides ...

Feb 28, 2020· The ability of the blast furnace to remain the world’s preeminent iron producer for so many years can be attributed to steady gains in output and efficiency, which are exemplified by long-term improvements in the worldwide coke rate. Back in 1900, the world’s blast furnaces consumed, on average, somewhat more than one ton of coke to smelt ...

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Influence of high grade iron ore usage on the …

fuel rate and productivity in blast furnace. LU, L. et. al. (2007) pointed that the poor metallurgical properties can result in poor bed permeability, which impacts the efficiency and productivity of blast furnace. Since the development of this new high-grade iron ore, BRBF, Vale S.A. conducted

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Alert Blast Furnace & Sintering (August 2016)

Alert Blast Furnace & Sintering (August 2016) 1. Recent advances in iron ore sintering. L. Lu, O. Ishiyama. Read more 2. The influence of ore composition on sinter phase mineralogy and strength. M. Pownceby, N. Webster, J. Manuel, N. Ware. Read more 3. Fundamental nucleus assimilation behaviour of haematite and goethite

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Factors Affecting Iron Quality | Blast Furnace | Coke (Fuel)

Techno Economics At a glance, the effect of various operating parameters on blast furnace performance indices in terms of production & coke rate are as follows: Change in Operating Parameters 1% decrease in furnace stoppages 100oC increase in hot blast temp. 0.1 atm increase in top gas press. 1% decrease in coke ash Change in HM Production ...

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Chemical, Mineralogical and Metallurgical …

blast furnace as a result of prior calcinations outside the furnace and thus reduces the coke rate (Singh and Deo, 1995). Incorporation of flux in the burden through sinter, therefore, greatly improves the blast furnace performance, since the formation of slag then becomes relatively easy and it forms at the correct level in the blast furnace.

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Blast Furnace operation: Thermal Control

Aug 03, 2011· If the hot blast temperature is lower than the aim for more than 4 hours then a fuel rate equivalent change is to be made to restore the thermal input. However if by reducing the blast moisture results in a flame temperature above 2250˚C then the coal rate or coke rate should be increased instead.

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Influence of Coating Granulation Process on Iron Ore ...

For better blast furnace performance, there has always been a need for better quality raw materials like sinter, lump ore, and pellets. Among these raw materials the usage of sinter in blast furnace is at higher side compared to other iron bearing materials. As the quality of sinter product improves, its usage in blast furnaces also increases.

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Control of the grain size distribution of T the raw ...

influence the properties of the product. This also pertains to iron sinter, which is ... can be directly charged to the blast furnace, as they are detrimental to the permeability and ... evaluating the productivity of the sinter bed, the coke rate, tumble index (TI), abrasion index (AI), reduction disintegration index ...

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Application of High Ratio Coke Mixed Charging …

above, the changes in blast furnace operation when the sinter ratio is changed were predicted using the 2-dimensional simulator. The effects of the sinter ratio and the coke mixed charging ratio were investigated for base operational parameters (productivity: 2.0 t-pig/ m3·d, coke ratio: 387.5 kg/t-pig, PCR: 89.1 kg/t-pig, blast rate: 7 780 ...

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9.1.3 Alumina in Blast Furnace/Corex Burden

slag rate, reduced output and increased energy consumption through coke rate. Based on the above study, correlation of Alumina in Sinter with Blast Furnace carbon rate was conducted. As per the study, every 1% increase of Alumina in BF burden, carbon rate in Blast Furnaces …

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