coke consumption in blast furnace

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coke consumption in blast furnace

Physical and chemical properties of metallurgical coke and its ...

2024年6月15日 Coke plays an irreplaceable role in blast furnaces (BFs), acting as both the skeleton of the stock column and the permeable layer of the gas flow. Thus, examining the

CFD-DEM study on the synergistic effect of coke consumption and ...

2024年6月1日 In this work, the dynamic behavior of multiphase flow and coke particle consumption in the blast furnace raceway is simulated using the CFD-DEM coupling

Prediction of the Consumption of Raw Materials and

The original mathematical model of coke degradation in a blast furnace makes it possible to calculate the minimum consumption of coke from the dynamic balance for different values of the ratio of direct and indirect reduction.

Coke Consumption in the Blast Furnace - Springer

Abstract—With falling blastfurnace demand for reducing agents, direct reduction has a clear influence on coke consumption, not only directly but also indirectly on account of the smaller

Coke consumption in the blast furnace - ResearchGate

2013年6月1日 The degree of direct reduction and the coke consumption in the blast furnace, which are not independent variables, are determined by the carbon-demand ratio for physical

Prediction of the Consumption of Raw Materials and

Blast Furnace Productivity and the Influencing

2013年6月23日 Automatic process control improves the furnace productivity since it minimize consumption of reductant, avoids furnace process disturbances such as hanging, slipping, scaffolding, gas channeling etc

Blast Furnace - an overview ScienceDirect Topics

Experience and lessons learned. Michele Laraia, in Beyond Decommissioning, 2019. 6.2.2.4 Blast furnaces “A blast furnace is a large structure in which iron ore is heated under pressure so that it melts and pure iron metal separates out and can be collected “(Collins Dictionary). The heritage value of blast furnaces built before 1900 has been recognized already for a long time,

Blast Furnace Ironmaking - an overview ScienceDirect Topics

2020年7月15日 Use of these auxiliaries affects the behavior of the furnace and the consumption of coke. 2.2 Fossil-based reducing agents. Coke is the primary fuel and reducing agent in the blast furnace process. The amount of coke that is used in modern blast furnaces is around 350–400 kg/t hot metal, depending on the amount of auxiliary reducing agents ...

Influence of Air-Tuyere Assembly in the Blast Furnace on the Coke ...

2023年6月1日 That also decreases the coke consumption per ton of hot metal. According to the technical instructions at blast furnace shops, 10°C increase in blast temperature within the range 1100–1200°C may decrease the coke consumption by 0.22% (or 0.95 kg/t) if the blast’s oxygen content is 25–35%.

Use of Nut Coke in Blast Furnace Metallurgist - Springer

2023年5月26日 A method for estimating the input of nut coke to the blast-furnace hearth is proposed. It takes into account the specific surface area of the loaded fuels, the reduction of oxides into elements of iron, and the carburization of iron. It is shown that if nut coke in an amount of up to 100 kg/ton of iron is loaded into the iron-ore part of the charge, its input to the tuyere

Review of hydrogen-rich ironmaking technology in blast furnace

2021年4月18日 ABSTRACT. The global warming promotes the steel industry to replace part of coke by injecting hydrogen-rich fuel into the blast furnace to reduce CO 2 emissions and energy consumption. In this paper, the injected hydrogen-rich fuels and effects of hydrogen-rich smelting on burden reduction and property evolution were introduced, and the hot events

Coke consumption in the blast furnace Steel in Translation

2015年2月28日 With falling blast-furnace demand for reducing agents, direct reduction has a clear influence on coke consumption, not only directly but also indirectly on account of the smaller improvement in smelting conditions with decrease in the demand for heat.

Prospects for lowering coke consumption in blast ... - 百度学术

Difficulties have been observed in blast furnace operation with blast oxygen enrichment to over 30% with a blast temperature of 1150-1200°C and natural gas consumptions over 120 m3 t-1. These difficulties must be overcome if the coke rate is to be lowered further on the basis of blast parameter improvement.

Investigating effect of coke porosity on blast furnace

2023年8月26日 Reducing coke use is an effective measure to reduce carbon emission and energy consumption in the blast furnace (BF) ironmaking. Essentially, BF is a high-temperature moving bed reactor, where complex physical transformations coupled with complicated reactions occur. This makes it challenging to investigate the factors determining BF performance with

New insights into the influence of hydrogen on important

2023年11月1日 The traditional blast furnace (BF) smelting process, reliant on carbon as a fuel and reducing agent, ... With a hydrogen injection rate of 250 m³/THM at 25 °C, the coke consumption decreased by 54.6 kg/THM, leading to a reduction of 186.1 kg/THM in CO 2

Use of PCI in blast furnaces - ICSC

The requirements relating to coke quality have become more stringent at high PCI rates, and ... raceway and the consumption of unburnt char outside the raceway are discussed. ... the blast furnace (BF), accounting for about 60%

Review of hydrogen-rich ironmaking technology in

2021年4月18日 The global warming promotes the steel industry to replace part of coke by injecting hydrogen-rich fuel into the blast furnace to reduce CO2 emissions and energy consumption.

Blast Furnace Hydrogen Injection: Investigating Impacts and

2022年2月18日 In 2012, Nogami et al. investigated the impacts of H 2 injection on stack temperatures, coke rates, and pressure drops inside a blast furnace producing ~10,000 tons per day using numerical modeling. 4 More recently, researchers in Germany using Aspen Plus found that optimal operating conditions combined with hydrogen injection at a rate of 27.5 kg/thm

Recent Trends in Ironmaking Blast Furnace Technology to

2016年9月3日 Decreasing coke consumption in the blast furnace by means of shifting the equilibrium point of FeO-Fe reduction affecting decrease of thermal reserve zone temperature is being discussed intensively (Ariyama et al. 2005; Schmöle and Lüngen 2005; Nomura et

Energy Utilization in Ironmaking Process SpringerLink

2023年2月15日 The process energy consumption of blast furnace ironmaking accounts for 45–60% of the total energy consumption of the iron- and steelmaking process, which is the key point of energy conservation in the iron and steel industry (Fig. 1).The energy input into the blast furnace ironmaking mainly contains coke, fuel injection, electricity, blast, oxygen,

Factors affecting Coke rate in a Blast Furnace – IspatGuru

2014年6月29日 Factors affecting Coke rate in a Blast Furnace. satyendra; June 29, 2014; 0 Comments ; BF burden, BF gas, blast furnace, coke rate, reducing agent,; 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

Coal Blending Models for Optimum Cokemaking and Blast Furnace

2004年8月25日 maintain a consistent blast furnace operation and produce a high-quality hot metal product. The use of high-quality coke in the blast furnace will result in lower coke consumption, higher productivity, and lower hot metal cost. As the primary fuel in the blast furnace, coke must be strong enough to support the weight of the blast furnace burden

Usage of Blast Furnace Heat Balances to Control Heat Loss

certain conclusions on potential reduction of coke consumption in blast furnace process. Total and zonal heat balances are known as two types of balance [1–3]. Table 1 illustrates the main inputs and outputs of the total heat balance of BF10 MMK (Magnitogorsk Iron Steel Works,

Determining CRI and CSR for Coke Coke and Chemistry

Coke quality is currently assessed in terms of the moisture content, sulfur content, ash content, and mechanical strength, as well as the coke reactivity (CRI) and coke strength after reaction with CO 2 (CSR).The CRI and CSR values are determined by a method developed by Nippon Steel (NSC) [].. The requirements on coke quality for blast-furnace use are fairly stringent:

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