OUR influence of sinter on coke rate of blast furnace

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

Apr 27, 2013· 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 (+ 25 mm to – 80 mm).

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

Increasing the Mixing Rate of Metalized Pellets in Blast . Increasing the Mixing Rate of Metalized Pellets in Blast Furnace Based on the High-temperature Interactivity of Iron blast furnace, sinter, lump ores. Factors affecting Coke rate in a Blast Furnace | … Factors affecting Coke rate in a Blast Furnace ... relate to lump size, shape and ...

impact of iron ore quality on blast furnace performance

Factors affecting Coke rate in a Blast Furnace ispatguru. Jun 29, 2014 . Introduction of high quality BF coke to a blast furnace results in . Impurities present in BF coke affect its performance in the blast furnace by decreasing its role . materials which are sinter, pellets and calibrated iron ore (CLO).

Influence of MgO Addition on Sinter Strength of Blast Furnace

Request PDF on ResearchGate | Influence of MgO Addition on Sinter Strength of Blast Furnace | In this paper, the MgO-containing sinter is studied. Laboratory-scale experiments are carried out to ...

Effect of Nut Coke-sinter Mixture on the Blast Furnace ...

The influence of nut coke rate on the pressure drop of sinter is given in Figs. 5and 6. Generally, it can be seen that the pressure drop decreased with rising nut coke rate in the sinter–nut coke mixture. This effect became more re-markable at higher flow rate and Reynolds number (Reynolds number under the blast furnace conditions 600Re800).

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 PCI rates of 180 kg/tHM and coke rates around 300 kg/tHM. A global quality index has been defined which is well correlated with the blast furnace productivity.

Lecture 26: Iron making in blast furnace

blast furnace is around 25 to 30m. It must be mentioned that blast furnace is a very efficient reactor both in terms of heat and mass exchange between solids and gases. Blast furnace operation In the blast furnace burden (consists of iron ore sinter/pellets +coke …

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

Jun 29, 2014· 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.

Sintering - Eurotherm

Sinter Plant. The function of the Sinter Plant is to supply the blast furnaces with sinter, a combination of blended ores, fluxes and coke which is partially 'cooked' or sintered. In this form, the materials combine efficiently in the blast furnace and allow for more consistent and controllable iron manufacture.

Sinter plant - Wikipedia

Sinter plants agglomerate iron ore fines (dust) with other fine materials at high temperature, to create a product that can be used in a blast furnace.The final product, a sinter, is a small, irregular nodule of iron mixed with small amounts of other minerals. The process, called sintering, causes the constituent materials to fuse to make a single porous mass with little change in the chemical ...

Blast Furnace operation: HOW A BLAST FURNACE WORKS

Aug 04, 2011· The purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called "hot metal". The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom.

relationship of sinter in blast furnace coke rate

relationship of sinter in blast furnace coke rate. Metabolic behavior based optimization of … Mathematical models of the blast furnace ... dosage of sinter and coke rate in blast ... it can be concluded that the material balance relationship between sinter ...

STRATEGIES FOR THE PRODUCTION OF LOW SILICON AND …

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.

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.

Development of new burden for blast furnace operation …

Development of new burden for blast furnace operation with low carbon consumption Principle of designing new burden Composite agglomerate Ore RCA RCA Reactive Coke Agglomerate Close arrangement of coke and iron oxide results in high reactivity Conventional layer structure Half thickness Homogeneously mixed Small coke mixed New burden ...

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 ...

NUT COKE IN A BLAST FURNACE - Steel Connect

size (10–40 mm) in the sinter layer to reduce the coke losses. The influence of nut coke on the shaft permeability and sinter reducibility under blast furnace simulating conditions is discussed as follows. The effect of various factors such as nut coke rate, gas flow rate, and layer thickness on the shaft permeability was estimated using cold

FACTORS AFFECTING COKE RATE IN A BLAST FURNACE

FACTORS AFFECTING COKE RATE IN A BLAST FURNACE A blast furnace (BF) is a multi variable system which is subjected to a large number of inter-influencing variables affecting its performance: productivity and coke rate. A world class blast furnace operation demands the highest quality of raw materials, operation, and operators.

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

through Coke & Coal consumption in Blast Furnace 1 2 Reduction of Coke Rate will impact the Perceived Opportunity –Reduction of Hot Metal Cost 3 Improvement Opportunity Current Performance (kg/thm) Target (kg/thm) Coke Rate 428 408 Project Statement : Reduction of Coke Rate of 'I' Blast Furnace …

Coke Ovens-Sinter-BF-BOF Route | SAIL

The most common steel making technology is the Bf-Bof Route. Coke is used in Blast Furnace (BF) both as a reductant and as a source of thermal energy. It involves reduction of ore to liquid metal in the blast furnace and and refining in convertor to form steel. The various stages of the steel plant is described below.

LOCATION AND EXTENT OF COHESIVE ZONE IN THE BLAST …

Literature review reveal that formation of a narrow cohesive zone lower down the blast furnace improves the productivity and reduces the coke rate and that in majority of the cases, the iron bearing material in the blast furnace reaches the softening temperature (top end of cohesive zone) with a reduction degree higher than 50 percent[1]. The ...

Sinter Plant - MECON

As on today, sinter has become widely accepted and preferred burden material in blast furnaces. Almost, there is no blast furnace operating without sinter, nowadays. The sintering technology was developed for the treatment of the waste fines of iron ore, coke, limestone, dolomite and …

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

AbstractOne 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 layers. In order to clarify the influence of nut coke on sinter reducibility, sinter and sinter–nut coke mixtures were isothermally ...

Optimizing Blast Furnace Operation to Increase Efficiency ...

Optimizing Blast Furnace . Operation to Increase Efficiency and Lower Costs. State-of-the-Art Computational Fluid Dynamics Model Optimizes Fuel Rate in . Blast Furnaces. The blast furnace (BF) is the most widely used ironmaking . process in the U.S. A major advance in BF ironmaking has been the use of pulverized coal which partially replaces ...

Evaluation of Sinter Quality for Improvement in Gas ...

improvement of gas permeability in the blast furnace. 2. Experimental Method 2.1. Sinter Properties and Reducing Gas Conditions Used in Experiments In order to evaluate the effect of sinter properties on gas permeability in the blast furnace, four types of sinter (A)– (D) with different RI, RDI, and chemical compositions were used.

MATHEMATICAL MODELLING OF A BLAST FURNACE …

for calculation of productivity and the coke rate dependences in a blast furnace. The productivity of a blast furnace has decreased on 234.1 tons pig-iron/day (9.44 %) at the coke reactivity increase by 17 %, the coke rate has increased for 55.02 kg/tons of pig-iron (11.48 %) for the mentioned conditions, i.e. on 1 % of coke

Coke Rate - an overview | ScienceDirect Topics

Jan 01, 2010· The coke is the major energy source for the blast furnaces. The present day blast furnaces use very low coke rate in view of its scarcity. The Indian blast furnaces use 507 kg coke ton − 1 hot metal against 250 kg ton − 1 hot metal under global best practice.

Compare Agglomerated VS Sized Ore in Blast Furnace

Table of ContentsRecent Technical Progress of the Blast Furnace OperationBurden Properties Required for Blast Furnace OperationEvaluation of Agglomerated and Sized Ore The Japanese iron and steel industry has been developed remarkably, supported by the increase of steel demand. In particular, progress in various technical aspects of the ironmaking process, including burden materials, …