Enhancement of the productivity of non-recovery stamp charge coke oven plant at JSPL Raigarh

2020 ◽  
Vol 117 (6) ◽  
pp. 617
Author(s):  
Rupak Ranjan ◽  
H.P. Tiwari ◽  
P.K. Srivastava ◽  
Mansingh S. Raghuwanshi ◽  
Ashwani Kumar Jaiswal ◽  
...  
Keyword(s):  
Coke Quality ◽  
Production Capacity ◽  
Coke Oven ◽  
Coke Production ◽  
Metallurgical Coke ◽  
Recent Past ◽  
Hot Metal ◽  
Metal Production ◽  
Blast Furnace Coke ◽  
Furnace Coke

In recent past, Jindal Steel & Power Limited, Raigarh unit, has increased the hot metal production capacity by the renovation of the existing blast furnaces. Therefore, the blast furnace coke demand has increased. This excess demand for metallurgical coke production from the existing non-recovery stamp charge coke oven plant was a very tough challenge, because the coke oven plant was already running at rated production capacity. Therefore, to fulfill the requirement of excess coke and to deliver more value to the customers, several initiatives have been taken by the Coke Oven and Technical Services Department within the existing setup. Few approaches had been adopted to increase the productivity of coke by ∼20% without deteriorating the resultant coke quality. This paper describes in details the steps taken to enhance the productivity of non-recovery stamp charge coke oven plant.

scholarly journals Production and quality of blast furnace coke in Ukraine

2007 ◽  
Vol 1 (2) ◽  
pp. 91-96
Author(s):  
Yevgen Kovalov ◽  
Keyword(s):  
Coke Quality ◽  
Coke Production ◽  
Raw Material ◽  
Metallurgical Coke ◽  
Material Base ◽  
Preparation Methods ◽  
Blast Furnace Coke ◽  
Coal Charge ◽  
Furnace Coke

This research displays the state of metallurgical coke production in Ukrainew with special attention to the raw material base for production of coke and its quality. Besides the following essay deals with the detailed analysis of preparation methods of coal charge for coking, including thermal treatment and stamp charging and formulates the main ways of upgrading coke quality considering the rational technology of coking.

scholarly journals Analysis of the Influence of Biomass Addition in Coal Mixture for Metallurgical Coke Production

2021 ◽  
pp. 1-9
Author(s):  
Alex M. A. Campos ◽  
Paulo S. Assis
Keyword(s):  
Blast Furnace ◽  
Co2 Emissions ◽  
Environmental Issues ◽  
Coke Production ◽  
Partial Replacement ◽  
Metallurgical Coke ◽  
Hot Metal ◽  
Short Term ◽  
Metal Production ◽  
Coal Mixture

Metallurgical coke is a common material used for hot metal production in blast furnaces. In addition to the fuel function, it has a physical assignment, supporting the load inside the reactor, and chemical, supplying carbon to hot metal. However, due to growing discourse on environmental issues, the production of hot metal via coke blast furnace has been in evidence. This process is responsible for about 70% of CO2 emissions in steelmaking. On the other hand, biomasses are materials that are available in different ways in nature and considered neutral in CO2 emissions since they absorb this gas and release oxygen in the photosynthesis process. Thus, a viable alternative in the short term is the partial replacement of the coal used in coke production with biomass, which would generate environmental gains, and guarantee the sustainable production. Therefore, this work aims to show several published researches using biomass in coke production. The effects that biomass has on the properties of coke will be emphasized, and at the end, an environmental analysis will be shown with the possible use of biomass. It will be possible to see that it is possible to substitute between 2 and 10% of the coal for biomass, producing coke with the characteristics required in the blast furnace.

Optimizing Steel-Making Secondary Metallurgy Slag at ISD DUNAFERR Zrt

2015 ◽  
Vol 812 ◽  
pp. 173-179 ◽  
Author(s):  
Róbert Móger ◽  
Mihály Réger ◽  
Alfred Ender ◽  
Róbert Józsa ◽  
Krisztián Wizner
Keyword(s):  
Cold Rolling ◽  
Production Capacity ◽  
Coke Production ◽  
Hot Metal ◽  
Metal Production ◽  
Secondary Metallurgy ◽  
Steel Making ◽  
History Of ◽  
Metallurgical Combine ◽  
Hot And Cold Rolling

ISD DUNAFERR Co. Ltd., formerly named as Dunai Vasmű (Danube Ironworks), has a history of over half a century. Currently it is the only factory in Hungary that is operated by integrated steel-making technology and has a hot metal production capacity of 1.7 million tons (Figure 1). The metallurgical combine includes coke production, hot metal production, steel-making, hot and cold rolling, profiling and manufacturing of galvanized products too. Steel is produced by 2 BOFs with the capacity of 135 tons each.

Coking coal producers will face extended strain

2016 ◽  
Keyword(s):  
Steel Production ◽  
Coke Production ◽  
Weather Event ◽  
Coking Coal ◽  
Content Type ◽  
Blast Furnace Coke ◽  
Steel Mills ◽  
Metallurgical Coal ◽  
Furnace Coke ◽  
Do So

Subject Market beset by multiple headwinds. Significance Premium hard-coking coal -- used in the production of blast-furnace coke for steel mills -- is trading at around 92 dollars a tonne, up from a February low below 80 dollars a tonne but still a long way down from the more-than-300 dollars a tonne it commanded in 2011. China's steelmakers are making less steel and using more domestic coke to do so; China's hard-coking coal imports fell by 23% in 2015. Although imports rebounded in the first quarter of 2016, China has said it will shutter up to 150 million tonnes (mt) of steel production, 70 mt of coke production and much of its coal production. Impacts Domestic oversupply in China will drive imports down, with the gradual decoupling of seaborne and Chinese metallurgical coal prices. Many mine closures are reversible; should market conditions improve, up to 70 mt of idled capacity could resume production. Any major weather event could strain the supply chain, triggering a shortage.

Technological advancements in evaluating the performance of the pulverized coal injection through tuyeres in blast furnace

2020 ◽  
Vol 117 (6) ◽  
pp. 611
Author(s):  
Ashish Agrawal ◽  
Rohit Kumar Tiwari ◽  
Sanjiv Kumar ◽  
Rajeswar Chatterjee ◽  
Basant Kumar Singh ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Pulverized Coal ◽  
Injection System ◽  
Metallurgical Coke ◽  
Hot Metal ◽  
Metal Production ◽  
Replacement Ratio ◽  
Pulverized Coal Injection ◽  
Factors Influencing ◽  
Coal Injection

The pulverized coal injection (PCI) is pursued to reduce the hot metal production cost by replacing the expensive metallurgical coke with the non-coking coal. Increasing the PCI rate causes various difficulties in the blast furnace (BF) operation. In the present work, an attempt is made to review the various aspects of PC injection in BF such as the challenges with increasing the PCI rate and modifications in the injection system to circumvent the concerns related to higher PCI rate. Various methods for detecting the tuyere blockage and failure caused due to the high PCI rate are elaborated. The factors influencing the combustion of coal in front of tuyeres have been discussed and their impact in the replacement ratio has been discussed. Further, recommendations are made to improve the coal combustibility in front of tuyeres.

scholarly journals Use of Alternative Raw Materials in Coke-Making: New Insights in the Use of Lignites for Blast Furnace Coke Production

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2832
Author(s):  
Michał Rejdak ◽  
Rafał Bigda ◽  
Małgorzata Wojtaszek
Keyword(s):  
Blast Furnace ◽  
Raw Materials ◽  
Coke Production ◽  
Quality Parameters ◽  
Blast Furnace Coke ◽  
Direct Addition ◽  
Furnace Coke

This paper presents the results of studies on the possibility of using lignite to produce blast furnace coke. The aim of the investigation was to evaluate the influence of lignite addition (direct addition or incorporated into briquettes) on the textural, structural and quality parameters (NSC-CRI and CSR) of blast furnace coke. It was found that the introduction of lignite in briquettes (4.5% addition) allows coke to be produced that is characterized by equally high NSC parameters as for coke obtained without lignite addition for standard top-charged operation.

scholarly journals Raw material base for coking of the Coke Production of PJSC "ARCELORMITTAL KRYVYI RIH" in the period from 2017 to 2021.

2021 ◽  
Vol 4 ◽  
pp. 4-9
Author(s):  
N.V. Mukina ◽  
D.V Miroshnichenko
Keyword(s):  
Quality Indicators ◽  
Coke Oven ◽  
Ash Content ◽  
Raw Material ◽  
Material Base ◽  
Chemical Production ◽  
Total Sulfur Content ◽  
Blast Furnace Coke ◽  
Coal Charge ◽  
Furnace Coke

RAW MATERIAL BASE FOR COKING OF THE COKING PRODUCTION OF PJSC "ARCELORMITTAL KRYVYI RIH" IN THE PERIOD FROM 2017 TO 2021 © N.V. Mukina (Coke-chemical production of PJSC "ArcelorMittal Kryvyi Rih", 50095, Dnepropetrovsk region, Kryvyi Rih, Krivorozhstal st., 1, Ukraine), D.V. Miroshnichenko, Doctor of Technical Sciences (NTU "Kharkiv Polytechnic Institute", 61002, Kharkiv, st. Kirpicheva, 2, Ukraine) The article presents the data on coal components that were used in the charge for coking coke oven batteries №№1-4 (bulk coal charge) and №№ 5, 6 (tamped coal charge) of the coke-chemical production of PJSC "ArcelorMittal Kryvyi Rih" in the period from 2017 to 2021, as well as averaged information on some quality indicators of the produced coke. In general, the coal raw material base of the enterprise for the last five years has been of a stable inter-basin nature with a predominance of coals from the USA, Kazakhstan, and the Russian Federation. It is shown that, as the tamping technology suggests, moisture content, bulk density and content of classes less than 0.16 and less than 3.0 mm in coal charges supplied to the coal waste plant. №№ 5, 6 are significantly higher than the values of similar indicators of coal charges supplied to the numbers 1-4. Along with this, due to the use of coals of a certain quality, ash content, total sulfur content and the thickness of the plastic layer in coal charges supplied to the coal bunker №№ 1-4, is slightly higher than similar indicators of coal charges supplied to the boiler №№ 5, 6. In total, during 2017-2021, the composition and quality indicators of the coal charge for the production of coke at the boiler plant №№ 1-4 practically did not change, while in the coal charge for the production of coke on coke oven batteries №№ 5, 6 there is a decrease in the share of highly volatile coals with a simultaneous increase in the content of medium-volatile and low-volatile components. The given values of the quality indicators of the obtained blast-furnace coke indicate that the use of tamping technology makes it possible to obtain blast-furnace coke of a higher quality than by using a traditional technology. In particular, the coke obtained at the oven batteries №№ 5, 6 are characterized by lower values of ash content, total sulfur content and abrasion (M10) with higher values of mechanical strength in terms of M25 and post-reaction strength (CSR). Keywords: coal, inter-basin raw material base, coking, charge tamping, coke quality. Corresponding author N.V. Mukina, е-mail: [email protected]

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