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 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]

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 Estimation of the suitability of the coal charge for producing blast-furnace coke of the given quality using the tamping technology.

2021 ◽  
Vol 4 ◽  
pp. 9-15
Author(s):  
E.T. Kovalev ◽  
A.L Borisenko ◽  
I.V. Shulga ◽  
N.A. Desna
Keyword(s):  
Blast Furnace ◽  
Raw Material ◽  
Plastic Layer ◽  
Maximum Height ◽  
Material Base ◽  
Blast Furnace Coke ◽  
Coal Charge ◽  
The Given ◽  
Furnace Coke

ESTIMATION OF THE SUITABILITY OF THE COAL CHARGE FOR PRODUCING BLAST-FURNACE COKE OF THE GIVEN QUALITY USING THE TAMPING TECHNOLOGY © E.T. Kovalev, Doctor of Technical Sciences, A.L. Borisenko, PhD in technical sciences, I.V. Shulga, PhD in technical sciences, N.A. Desna, PhD in technical sciences (State Enterprise "Ukrainian State Research Coal Chemical Institute (UKHIN)", 61023, Kharkіv, Vesnina st., 7, Ukraine) The article shows the relevance of technologies that implement the possibility of expanding the raw material base of coking with the help of special methods for preparing the charge, among which tamping is currently taking the leading place in the world and in Ukraine. It is shown that when considering the issue of introducing the technology of coking the tamped charge, a previous link of the available raw material base with the planning of the main structural parameters of the coke oven is necessary. It will provide on the basis of global low-caking coals the production of coal coke with characteristics that are as close as possible to the requirements of the world's leading iron producers. On a general example, the developed complex and the procedure for performing the corresponding assessment are presented, the following includes: – a comprehensive analysis of the properties of bituminous coals intended to be used as components of the raw material base (technical, petrographic and other analysis); – drawing up on their basis model charges, taking into account the restrictions on ash content (≤ 9-10 %), burst pressure (≤ 7 kPa), thickness of the plastic layer (≤ 15 mm.); – laboratory determination of indicators of tamping capacity of model charges – density of rammed briquettes (γ, g/cm3 ) and their shear strength (σss, kPa); – laboratory coking of tamped model mixtures with subsequent determination and comparison of the properties of the obtained cokes; – based on the data on the tamping capacity of the model charges, which showed optimal results in terms of the formation of coke of the best quality and the parameters of the known (mastered) designs of furnaces and charge, the calculated determination of the value of the maximum height of the coking chamber for the studied composition and properties of the charge. Keywords: coking, tamping of coal charge, preliminary assessment, analysis of coals, model charge, tamping indicators, coking, coke properties, coking chamber height. Corresponding author E.T. Kovalev, e-mail: [email protected]

Elaboration of indices complex and additional criterion of coals and charges quality evaluation for production and prediction of required and high quality coke

2021 ◽  
Vol 77 (6) ◽  
pp. 651-664
Author(s):  
Yu. A. Zolotukhin ◽  
N. S. Andreichikov ◽  
A. Ya. Eremin ◽  
T. F. Kraskovskaya ◽  
V. V. Kuprygin
Keyword(s):  
Coke Quality ◽  
Metallurgical Coke ◽  
Quality Prediction ◽  
Material Base ◽  
Technological Properties ◽  
High Quality ◽  
Petrographic Composition ◽  
Wide Range ◽  
A Charge

Coal raw material base of coking is the main factor characterizing the quality of coke. Therefore, it is very important to know technological properties and peculiarities of coals behavior in a charge during coking process for coals charge batching and coke quality control. One of the priority directions in study coals and charges is petrographic and reflectogram analysis, which enable to obtain data related to evaluation genuine (one-valued) technological properties of coals, coal blends and charges at production of coke of required quality. Using a broad material of study, including the one carried out by the authors of the article, a wide range of application of reflectogram analysis of coals, coals blends and charges in the coking production was shown. It was demonstrated also that application of the analysis enabled to exclude the problem of “twins”, to define the degree of genetic coals recoverability and coals grades or types relation in the mixtures for the coking. Based on the elaborated by the authors reflectogram criteria of charges for coking, a strategy of coals batching was proposed, which ensures production of metallurgical coke of required and high quality and safe running of coke ovens. Based on wide experimental studies of plastic-tough properties of coal charges, porosity of coke, its X-ray structure characteristics, strength and reaction ability, theoretical ideas were formed about mechanism of interaction in a charge of petrographically nonuniform coals comprising it during coking process, by using the proposed by the authors indices of coals nonuniformity. The indices of coals, comprising the charge, nonuniformity, differ by metamorphism degree (σR) and petrographic composition (σСК), explaining regularities of forming of quality of coke from the charge with participation of petrographically nonuniform coals. The package of the factors noted by the authors, revealed in the process of the study of coals, coals blends and charges, as well as quality of coke obtained from them, enabled to elaborate a complex index of charges coking ability (К.п.к.Vo), which enables to considerably simplify the mathematical model of coke quality prediction and to increase its reliability. Mathematical models of coke quality prediction were verified and implemented at several plants of Russia.

scholarly journals Preparation of coal charge for coke battery complex №. 5, 6 at Coke Production of PJSC «ArcelorMittal Kryvyi Rih».

2021 ◽  
Vol 3 (3) ◽  
pp. 8-20
Author(s):  
N.V. Mukina ◽  
A.P. Chernousova ◽  
D.V. Miroshnichenko ◽  
N.А. Desna ◽  
A.V. Sytnik ◽  
...  
Keyword(s):  
Shear Strength ◽  
Moisture Content ◽  
Raw Materials ◽  
Coke Production ◽  
Coke Battery ◽  
Raw Material ◽  
State Enterprise ◽  
Material Base ◽  
Chemical Production ◽  
Coal Charge

PREPARATION OF COAL CHARGE FOR COKE BATTERY COMPLEX NO. 5, 6 AT COKE PRODUCTION OF PJSC «ARCELORMITTAL KRYVYI RIH» © N.V. Mukina, A.P. Chernousova (Coke Production of PJSC «ArcelorMittal Kryvyi Rih», 50095, Dnipropetrovsk region, Kryvyi Rih, Kryvorizhstal str., 1, Ukraine), D.V. Miroshnichenko, Doctor of Technical Sciences (NTU "Kharkov Polytechnic Institute", 61002, Kharkov, Kirpicheva st, 2, Ukraine), N.А. Desna, PhD in technical sciences, A.V. Sytnik, PhD in technical sciences, V.V. Koval (State Enterprise "Ukrainian State Research Coal Chemical Institute (UHIN)", 61023, Kharkov, Vesnina st., 7, Ukraine) The article highlights the methodological foundations and the results of research on the development of criteria and practical recommendations aimed at optimizing the composition of coal charges of coke oven batteries No. 5, 6 of the coke-chemical production of РJSC "ArcelorMittal Kryvyi Rih" to obtain coke of the required quality from the rammed charge. The defining indicator of the production of coke using the technology of compaction of coal charges is the strength of the compacted cake. The most successful way to determine this indicator is to assess the strength by an indirect method according to the value of the shear strength (ϭss) of rammed batch samples in laboratory conditions. This method allows to identify changes in the strength of the coal cake and take the necessary measures to prevent or minimize the number of collapses during loading. The article gives images of installations for laboratory compaction of coal charge and determination of the shear strength of the resulting cake; the methodology for determining this indicator is given. As a result of the above studies, it has been established that the density of the tamped cake from crushed individual coals included in the raw material base of the by-product coke production of РJSC "ArcelorMittal Kryvyi Rih" is closely related to the content in coal raw materials of classes <3 and <0.5 mm. An increase in the content of classes <3 and <0.5 mm leads to an increase in the index ϭss. It is also shown that the actual values of ϭss for binary coal mixtures are higher than the calculated ones. It has been established that with an increase in the level of grinding of coal charges from 90,1 to 92,2 %, an increase in the value of the index ϭss is observed from 12.5 to 15.0 кРа, that is, by 20 %. With an increase in the moisture content of the charge from 10,0 to 11,5 %, the strength of the compacted cake increases. An increase in the moisture content above 12 % is undesirable due to a decrease in the strength of the rammed coal cake, as well as an increase in heat consumption for coking due to the consumption of moisture evaporation. Keywords: coal, preparation, shear strength of the rammed cake, moisture content, particle size distribution. Corresponding author N.V. Mukina, е-mail: [email protected]

scholarly journals MEASUREMENT OF THE CONTENT OF MONOETHANOLAMINE DURING THE CONTROL OF THE TECHNOLOGICAL PROCESS OF DESULFURIZATION AND IN THE ENVIRONMENTAL OBJECTS

2021 ◽  
Vol 1 ◽  
pp. 28-36
Author(s):  
A.Yu. Martynova ◽  
A.I. Larina ◽  
V.A. Saraeva
Keyword(s):  
Sodium Hydroxide Solution ◽  
Coke Oven ◽  
Coke Production ◽  
Sulfur Compounds ◽  
Raw Material ◽  
Test Substance ◽  
Material Base ◽  
Chemical Production ◽  
Coke Oven Gas ◽  
Environmental Objects

The problem of cleaning coke oven gas from sulfur compounds, despite their recent decrease in the raw material base of coking, remains relevant in connection with the requirements to reduce sulfur dioxide emissions into the atmosphere. When using monoethanolamine for the purification of coke oven gas from sulfur compounds, production workers are faced with the problems of determining the exact concentration both in solutions and in coke oven gas and in environmental objects. The article provides an overview of the currently existing methods for the quantitative determination of the content of monoethanolamine in liquid and gaseous media. The results of studies of the possibility of their use in the conditions of by-product coke production are presented, directions of improvement of the known methods are determined in order to eliminate the influence of accompanying components inherent in by-product coke production (in particular, ammonia, amines, phenols, etc.), which distort the analysis results. The authors describe the methods of increasing the selectivity of analytical methods for determining the content of monoethanolamine in: – coke oven gas - based on the absorption of the test substance from coke oven gas by a solution of orthoboric acid, followed by its determination in a solution with pnitrophenyldiazonium; – the air of the working area under the conditions of by-product coke production - it was proposed to eliminate the negative effect of hydrogen sulfide and phenol using an absorber containing a sodium hydroxide solution located in front of the absorber with a hydrochloric acid solution for monoethanolamine (a revised measurement procedure with additions set out in accordance with the requirements of the current legislation in the field of metrology and established metrological characteristics, agreed by the Chief Sanitary Doctor of Ukraine). The directions of research necessary for the development of a method for determining the content of monoethanolamine in process waters of coke-chemical production are outlined. Keywords: desulfurization, monoethanolamine, content determination, selectivity, ammonia, p-nitrophenyldiazonium, coke oven gas, complex compound, color intensity, photometry, measurements. Corresponding author A.Yu. Martynova, e-mail: [email protected]

scholarly journals Construction sands of Podillya: patterns of distribution, resources and use

2019 ◽  
Vol 27 (3) ◽  
pp. 510-519
Author(s):  
M. Syvyj ◽  
B. Gavrychok
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Simultaneous Increase ◽  
Clay Material ◽  
Material Base ◽  
Resource Base ◽  
Apparent Correlation ◽  
The Baltic ◽  
Further Development

This article presents the characteristics of the resource base of building sands within the three Podillya regions, the patterns of sands distribution, and proposals for increasing the extraction of raw materials . The construction sands of Podillya are confined to the Upper Cretaceous, Neogene and Anthropogenicdeposits. The decrease of the thickness of the sandy strata of the Opilsk Neogene suite in the eastern direction was observed with the simultaneous increase in the thickness of the overlapping strata of the rocks. There is no apparent correlation between the thickness of sandy interlayers and the quality of sands. The interdependence of the chemical composition of Neogene sands and the sand size module is established.The genetic predisposition for the distribution of building sands in different parts of the Podillya territory has been established. Four groups of sand deposits of different age have been identified within the Podillya regions, which contrast sharply with single deposits in the neighbouring territories.There is a very uneven distribution of explored reserves of sandy raw materials across the region and accordingly in the provision of construction sands in the different oblasts /regions of Podillya. The areas best provided with sandy raw materials are the central districts of Ternopil region and Slavutsky district of Khmelnytsky region . Sands of the Baltic stage distributed in Vinnytsia region are mostly poor in quality, clogged with clay material and require enrichment. The further development of the mineral raw material base and the prospects for increasing the production of construction sand in the Podillya regions is associated with the increase in production at the prepared deposits, the commissioning of reserve deposits, the conducting of prospecting and exploration work in the proposed potentially exploitable areas and additional exploration of individual deposits that are exploited. The research allows us to evaluate objectively the existing base of sand raw materials for various purposes in the Podillya region and to develop on this basis measures to increase it. The importance of the study is determined by the acute shortage of the raw material in most administrative districts of Khmelnytsky and Vinnytsia regions, by the growth in the volume of construction work (and accordingly the requirements for sandy raw materials) both in Podillya and in the country.

scholarly journals The selection of technological basis of deep processing of coal.

2021 ◽  
Vol 4 ◽  
pp. 15-21
Author(s):  
M.O. Gordienko
Keyword(s):  
Melting Point ◽  
Environmental Safety ◽  
Coke Production ◽  
Raw Material ◽  
State Enterprise ◽  
Material Base ◽  
Deep Processing ◽  
Technological Basis ◽  
Thermochemical Processing ◽  
Selection Of

THE SELECTION OF TECHNOLOGICAL BASIS OF DEEP PROCESSING OF COAL © M.O. Gordienko (State Enterprise "Ukrainian State Research Coal Chemical Institute (UHIN)", 61023, Kharkov, Vesnina st., 7, Ukraine) The article is devoted to the analysis of the possibility of expanding the raw material base of thermal energy, as well as meeting the demand for motor fuels and chemical products through the thermochemical processing of coal, the reserves of which are large enough and available for extraction and transportation. Moreover, in contrast to technologies such as methanization and liquefaction, the most promising type of deep processing of coal seems to be its gasification. This process is carried out in sealed devices of high power according to the technologies that have a long history of improvement on an industrial scale by the world's leading companies. It was emphasized that Ukraine has significant reserves of low-calorie coal (constantly expanding due to waste of coal preparation), the thermochemical processing of which can significantly expand the domestic energy base. The basic principles of classification and technological foundations of existing industrial and industrial research installations for gasification of coal and similar materials are given. The basic diagrams and main parameters of the existing installations, which carry out the gasification process at temperatures below the melting point of the mineral (ash-forming) components of the raw material, are described - Sasol Lurgi and SES Gasification Technology (SGT). Based on the data on the world experience in the operation of thermochemical coal processing units, it is shown that low-temperature (carried out at a temperature below the melting point of the mineral ashforming components) gasification of various types of non-coking coal with certain technological solutions can be no less effective than more complex and expensive high-temperature technologies. There are grounds for believing that the efficiency of gasification with ash removal in a solid state can be further increased by using some of the technological capabilities available in coke production. Keywords: brown coal, non-coking coals, thermochemical processing, gasification, efficiency, degree of carbon conversion, energy carriers, synthesis gas, environmental safety. Corresponding author M.O. Gordienko, е-mail: [email protected]

Detailed Approach to Planning Transfers from One Production Facility to Another

2018 ◽  
Vol 785 ◽  
pp. 101-106
Author(s):  
Vadim Aleksandrov ◽  
Marsel Kadyrov ◽  
Andrey Ponomarev ◽  
Denis Drugov ◽  
Irina Bulgakova
Keyword(s):  
Development Stage ◽  
Raw Material ◽  
Modern State ◽  
Material Base ◽  
Present Stage ◽  
Complete Coverage ◽  
Depletion Rate ◽  
Analysis Of Results ◽  
Recoverable Resources

The modern state of the raw material base of the “Kogalymneftegaz” TMC is characterized by deterioration in the structure and quality of the field reservoirs at the latter development stage. The depletion of the main developed oil formations has long exceeded 60%. Despite the high depletion rate, the complete coverage of all recoverable resources by flooding has not been achieved. The differences in zone and area irregularities of the production facilities and the imperfection of the existing development systems at the present stage lead to the formation of non-drainable resources. In order to involve them into production in formations, various types of interventions are carried out in order to improve the existing development systems. The research objective is to develop a detailed approach to planning a transfer of wells which have completed their purpose from one development facility to another. Using a detailed geological and routine analysis of results of carrying out various interventions on the formation, an active application of the most effective of these has been proposed.

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