influence of sinter on coke rate of blast furnace

influence of sinter on coke rate of blast furnace

influence of sinter on coke rate of blast furnace

Enhancement of Iron Ore Sinter Reducibility through . tion into the blast furnace.16) Although the injection of COG into the blast furnace is practiced in some countries with dif-ferent injection rate from about 30 to 280 m3/tHM but its effect for example on the sinter reducibility is not clear.9,11,18,19) Furthermore, it was reported that the maxi-mum level of COG injection at the blast ...

influence of sinter on coke rate of blast furnace

Influence of the coke and burden quality on the ... To increase the sinter proportion (70–80%) in blast furnace, lowering of CaO in sinter mix is a vital parameter to balance the flux supply without affecting the slag volume and productivity. ...

Influence Of Sinter On Coke Rate Of Blast Furnace

Effect Of Nut Coke Sinter Mixture On The Blast Furnace . In meantime modern blast furnaces use nut coke with different amount 10140 kgt hot metal and different grain size 1040 mm in the sinter layer to reduce the coke losses.The objective of this paper is to clarify the influence of nut coke on the shaft permeability and sinter reducibility under blast furnace simulating conditions.

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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Request PDF | Influence of nut coke on iron ore sinter reducibility under simulated blast furnace conditions | One of the most important factors to increase the economic efficiency of the blast ...

influence of sinter on coke rate of blast furnace

Use of sinter in Taranto blast furnaces (Book) | OSTI.GOV. restarting an idled furnace) • HBI is easier to use than scrap in the materials handling system of the blast furnace • Rule of thumb is that for each 10 percent increase in burden metallization: • Production rate increases 8% • Coke rate decreases 7% • Reduction of coke rate results in significantly

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

This paper describes the coke and sinter quality used in the Sidmar blast furnaces to control permeability of the furnace with long term PCl rates of 180 kg/t HIM and coke rates around 300 kg/t HM ...

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.

Study on the Influence Factor of Coke Pulverization Rate ...

Mar 17, 2020 · Abstract The carbon dissolving reaction is the main factor for the deterioration of coke in the blast furnace. Therefore, in order to investigate the effect of coke deterioration on the permeability of blast furnace, the Coke Pulverization Rate (CPR) which represented the degree of Matrix carbon loss after carbon dissolution was put forward in this paper. The results showed that the CPR ...

reducibility of iron ore and coke rate in blast furnace

Effect of Nut Coke-sinter Mixture on the Blast Furnace Performance. To maintain stable blast furnace operation with low coke rate and ... The effect of various factors such as nut coke rate, gas flow rate, and layer ... The influence of nut coke on the sinter reducibility was ... The iron ore sinter was examined by re-. Read more

INTER-INFLUENCING FACTORS IN AFFECTING BF COKE RATE ...

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

Blast Furnace Coke Properties and - DiVA portal

Blast Furnace Coke Properties and the Influence on Off-gas Dust Maria Lundgren ISSN: 1402-1757 ISBN 978-91-7439-102-2 Luleå University of Technology 2010 Maria Lundgren Blast Furnace Coke Properties and the Influence on Off-gas Dust ISSN: 1402-1757 ISBN 978-91-7439-XXX-X Se i listan och fyll i siffror där kryssen är

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

Influence of the coke and burden quality on the productivity of the blast furnace - Volume 102 Issue 6. Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websites.

Blast Furnace Productivity and the Influencing Parameters ...

Jun 23, 2013 · BF coke, BF productivity, blast furnace, Burden distribution, CRI, CSR, Hot metal, RAFT, sinter, Blast Furnace Productivity and the Influencing Parameters. Blast furnace (BF) ironmaking is the most viable means of producing hot metal (HM) mainly because of its well established and proven performance, flexible raw material usage, and high ...

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 ...

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.

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

Influence of burden properties and coke quality on the operating results of big blast furnaces

recycling of blast furnace dust in the iron ore sintering

The Sintering Process of Iron Ore Fines IspatGuru. 9/3/2013· Sintering is a thermal process (carried out at 1300 deg C to 1400 deg C) by which a mixture of iron ore, return fines, recycled products of the steel plant industry (such as mill scale, blast furnace dusts, etc.), slag forming elements, fluxes and coke fines are

sinter and pelle Tmaking in jswmining

Understanding Sinter and Sinter Plant Operations As per thumb rule, the use of fluxed sinter indicate that for each 100 kg of limestone per net ton of hot metal removed from the blast furnace burden and charged into the sinter plant to make a fluxed sinter, approximately 20-35 kg of metallurgical coke per ton of hot metal is saved and around 3 % to 5 % improvement in the productivity of blast ...

Decreasing Coke Rate under All-Pellet Operation in Kobe

at low coke-ratio operation of its blast furnace process. Furthermore, its sintering plant was closed in 1999, ... No. 3 Blast Furnace Fig. 7 Influence of average diameter of pellet on reducing agent rate (RAR) ... Fig. 9shows the rate of coke supplied to the lower furnace part, which corresponds to the layer

Effect of coke reactivity and nut coke on blast furnace ...

Modern blast furnace operation with low coke rate and high injection rate causes a change in coke quality requirements. A discussion has arisen recently about highly reactive coke. Here, a theoretical analysis of influence of coke reactivity on the thermal reserve zone, direct reduction and carbon consumption in the blast furnace has been ...

Investigation of coke properties in an experimental BF

The potassium content of coke varies at different locations of an operating blast furnace, e.g. at tuyere level alkalis are completely vaporised at high temperatures of the raceway but deadman coke ash in the BF centre could contain up 30 % of potassium oxide 8, 11, 12 .

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

Jan 30, 2020 · with a blast furnace simulator (BFS) high-temperature furnace at four different temperatures (700, 800, 900, and 1000 C) for 300min. The experimental atmosphere consists of CO, CO 2,H 2,H 2O, and N 2 simulating the conditions in the BF shaft. It is found that lump ore has lowest reduction rate in all test

UDC 669 . 162 . 26 : 622 . 341 . 1-18 Blast Furnace ...

the degree of pre-reduction and how the coke rate, productivity, etc. of the blast furnace changes when pre-reduced ore is used in the blast furnace. Using natural gas for pre-reduction can help reduce the emission of carbon dioxide from the blast furnace process since natural gas is substituted for the coal used in the process. Therefore,

What is coke rate in blast furnace? - Answers

Jan 17, 2012 · According to steel.nic; Coke Rate is measured in Kgs of BF Coke consumed per tonne of Hot Metal produced in the Blast Furnace(Kg/THM). By convention,

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

Coke Rate 428 408 Project Statement : Reduction of Coke Rate of ‘I’ Blast Furnace by 5% leading to reduction of cost of Hot metal by 0.5 % which translate to INR 20 Cr Bottom Up : Goals and the strategies it will affect up the ladder

(PDF) Blast Furnace Operating Conditions Manipulation for ...

Furthermore, this value can be used to estimate the influence of different blast parameters of composite blast technology on the relative coke consumption.The values of C h i , r d min , C m and K m were calculated for blast furnace No.3 at EISCO and the results are summarized in Table 9.

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

Mar 23, 2020 · 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 2 ...

Influence of Type and Consumption of Pellets on Indicators ...

It is necessary to work on 40-45% of fluxed pellets and 20-25% acid pellets in a charge at a blast rate of 2000-2100 m3/min, to minimize coke rate and increase

A comprehensive investigation of the reaction behaviorial ...

1 Introduction. Metallurgical coke mainly functions as a reducing agent, structural support medium, fuel, and carburant in a blast furnace [1,2].With the development of ironmaking technology, blast furnaces tend to be used on a large scale, and the pulverized coal injection rate gradually increases.

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

Influence of burden properties and coke quality on the operating results of big blast furnaces

INJECTION OF PULVERIZED MATERIALS INTO THE BLAST

INJECTION OF PULVERIZED MATERIALS INTO THE BLAST FURNACE RACEWAY1 Lena Sundqvist Ökvist2 Gunilla Hyllander3 Erik T Olsson4 Jan-Olov Wikström 5 ... sinter fines and iron ore fines were carried out in Japan aiming to control the HM quality. ... Coke rate 414-480 400-452 439 444-446 440 428 394 406 398-408 kg/tHM

Reduction of Pellets-Nut Coke Mixture under Simulating ...

In recent years an intensive work has been carried out to decrease the coke losses of the blast furnace through mixing small-sized coke called ‘‘nut coke’’ in the iron ore burden layers. In order to clarify the influence of nut coke on the pellets reducibility, industrial iron ore pellets were reduced with and without nut coke participation under different temperatures and atmospheres.