2 edition of High-Temperature Behaviour of Blast Furnace Coke found in the catalog.
High-Temperature Behaviour of Blast Furnace Coke
Canada Centre for Mineral and Energy Technology.
|Series||CANMET report -- 77-60|
|Contributions||Reeve, D.A., Price, J.T., Gransden, J.F.|
The current coke quality parameters used in Tata Steel, IJmuiden are the I40, I10 and CSR. With the introduction of more different types of coals there is a need for a more detailed characterisation of the coke. Especially for the behaviour of coke in the lower parts of the blast furnace a parameter is lacking. Previous research in. Coke Oven Techniques [Energy, Dg For] on *FREE* shipping on qualifying offers. Coke Oven Techniques.
A. Klimczyk, R. Stachura, M. Bernasowski, A. Łędzki, Silicon behaviour at the blast furnace process, Journal of Achievements in Materials and Manufacturing Engineering 55/2 () 1. differences between coke behaviour in a real blast furnace environment and in the CSR/CRI test. The aim of this work is to study the high-temperature strength of coke by comparing cokes with different CSR values treated in the CSR/CRI test and under actual conditions in the blast furnace.
Coke is the unique role of supporting material column in blast furnace high temperature region. Therefore the most important property is the high temperature compressive strength after reaction. This paper used decarburization electric furnace, electric mirrors, adjustable atmosphere high temperature compression testing machine and other equipments, study on the relationships between coke Author: Xing Juan Wang, Ran Liu, Hong Li, Li Guang Zhu, Jue Fang. Raw Materials Processing: Coke, Fero-coke, Coal, Comminution, Magnetic Separation, Froth Flotation Iron ore agglomeration: Pelletizing, Sintering, Carbon-composite agglomerates, New agglomerates such as partly-reduced pellet and sinter Ironmaking: Blast .
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Get this from a library. High-temperature behaviour of blast furnace coke: a review. [D A Reeve; J T Price; J F Gransden].
Coke properties at high temperature zones in a blast furnace play an important role for blast furnace operation. Therefore, with the advance of manufacturing technology on high strength of coke and its stability in the cold state, the interest for coke quality has been turned to that at high temperatures.
Coke-making process Blast furnace coke is produced by heating coking coal to high temperature in the reducing atmosphere of the coke oven. The coal-to-coke transformation is illustrated in Figure 1. The coal mix is High-Temperature Behaviour of Blast Furnace Coke book from the oven walls on each side of the coke oven and two plastic layers are developed on each side and converge.
Blast furnace operation has shown that certain cokes, even though possessing excellent tumbler stability and hardness test ratings, adversely affect production when reaching the highly critical tuyere zone. These discrepancies have led to the development of a high temperature compression by: 1.
The article describes the behaviour of coke in the blast furnace. Factors, which cause weakening and degradation of coke lumps at temperatures above °C have been analyzed. On the basis of preliminary testing of samples taken from a blast furnace at different distances from the tuyère outlet and tests for thermo-abrasion ξ, the advisability of using the pre-tuyère chamber for the Author: Anna Konstanciak.
Nut coke (size. The increasing scale and intensity of modern blast-furnace operation, combined with a simultaneous reduction in coke rate, have led to more stringent coke quality requirements with a greater emphasis on the coke's (1 2) role as a burden spacer ' • Accordingly, coke quality data limited to chemical composition, initial size grading and ambient size stability are insufficient to predict the.
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.
The raw materials require 6 to 8 hours to descend to the bottom of the furnace where they become the final product of liquid slag and liquid iron. The influence of coking conditions, with respect to position in a commercial coke-oven, on the mechanical behaviour of blast furnace coke has been studied.
This involved the determination of density, porosity, the characterization of microstructure and assessing the influence of all three on the compressive strength of coke. The plastic flow properties were also investigated at temperatures Author: Michael G. Grant.
The increasing scale and intensity of modern blast-furnace operation, combined with a simultaneous reduction in coke rate, have led to more stringent coke quality requirements with a greater emphasis on the coke's (1 2) role as a burden spacer ' • Accordingly, coke quality data limited to chemical composition, initial size grading and ambient size stability are insufficient to predict the Brand: Springer Netherlands.
The principal raw materials used in the blast furnace operation consist of. Metallurgical coke, ferrous bearing feeds and fluxes charged via the furnace top. Cold hydrocarbon fuels injected through the tuyeres near the furnace bottom. Hot oxygen-enriched air blast delivered through the same tuyeres.
It is estimated that the coke consumption in a new generation blast furnace can be reduced to about 70 kg/THM. Under the condition of complete indirection reduction, primary slag will not form in a blast furnace, so that the cohesive zone will be eliminated which greatly improves the permeability of.
The Corex process has been developed as an alternative to the blast furnace where 80–85% non-coking coal and 15–20% coke is used as fuel for heat generation, production of reduction gases and.
AbstractIn order to explore the influence of unburned pulverized coal on gasification reaction of coke in blast furnace, kinetic rules of gasification reaction between CO2 and coke powder adding pulverized coals with different volatiles were studied by thermogravimetric analysis.
The results showed that weight-loss ratio of samples reacted with CO2 increased after adding pulverized coal, and Author: Yi-fan Chai, Guo-ping Luo, Sheng-li An, Jun Peng, Yi-ci Wang.
Blast Furnace Gas Blast furnace gas is a by-product of blast furnaces where iron ore is reduced with coke into metallic (pig) iron. The gas has a very low heating value of around kWh/Nm 3, which on its own is typically not high enough for combustion in a gas engine.
AbstractThe effects of the simultaneous injection of MgO and magnesite powder on the combustion of coals, properties of the primary slag, and softening-melting properties of the burden were investigated. There were four aspects to the results that we obtained.
First, MgO showed catalytic activity for dehydrogenation and carboxyl group removal from coal; as a result, with increasing MgO, the Author: Shujun Chen, Qing Lyu, Jianpeng Li, Xiaojie Liu, Kai Liu.
Introduction Coke types. Three main types of coke are produced from coking coals (Coal Technology, ) as follows:Metallurgical coke is produced in coke ovens and is mainly used for the iron ore reduction in blast furnaces (BFs). It is also consumed in blast and electric furnaces for ferroalloy production and for the reduction of other metal oxides, chlorides, phosphates Cited by: 3.
(2) reduction: high temperature gas generated in coke combustion in the raceway, passed to the material in the process of heat rising, the endothermic reaction and coke formation, CO and H2, then CO and iron oxide in iron ore reduction reaction is transformed into metallic iron.(3) the role of the skeleton: the blast furnace smelting process occurs in the movement and interaction between the.
Substitution of Coke and Energy Saving In Blast Furnaces. Part 5. Problems and Prospects of Low-Coke Blast-Furnace Technology I. Tovarovskiy [a,b],* [a]Iron and Steel Institute of National Academy of Science, Ukraine.
[b]Academician Starodubov Sqv., Dnepropetrovsk, Ukraine. *Corresponding author. Received 20 July ; accepted 8 October. The stability measures the ability of coke to withstand breakage at room temperature and reflects coke behavior outside the blast furnace and in the upper part of the blast furnace.
CSR measures the potential of the coke to break into smaller size under a high temperature CO/CO 2 environment that exists throughout the lower two-thirds of the. Coke in the blast furnace - high temperature gasification behaviour in three dimensions Andriopoulos, N.
/ Loo, C. E. / Jones, A. / Jernkontoret | print version.Blast furnace fluid dynamics – his first research field at SUNYAB covered blast furnace fluid dynamics, where along with his advisor, Prof.
Julian Szekely, he developed relationships to predict raceway and combustion zone penetration, shape, etc, as a function of blast conditions, coke properties, etc; they also were one of pioneers in using.A Study of the Behaviour of Coal Injected into the Blast Furnace Project duration: 1 July – 30 June Study of the behaviour of coal under blast furnace injection conditions had been the subject of closely simulate the real conditions in the raceway and coke bed of a blast furnace, operating.