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

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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Production and quality of blast furnace coke in Ukraine

Chemistry & Chemical Technology ◽

10.23939/chcht01.02.091 ◽

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.

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

Journal of Coal Chemistry ◽

10.31081/1681-309x-2021-0-4-9-15 ◽

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]

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

Journal of Coal Chemistry ◽

10.31081/1681-309x-2021-0-1-28-36 ◽

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]

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Development of rational technological parameters for heating of a coke battery with a stamped charging of coals.

Journal of Coal Chemistry ◽

10.31081/1681-309x-2021-0-3-20-29 ◽

2021 ◽

Vol 3 (3) ◽

pp. 20-29

Author(s):

V.I. Goncharov ◽

I.I. Sikan ◽

Ya.I. Dyachuk ◽

N.V. Mukina ◽

I.V. Shulga

Keyword(s):

Blast Furnace ◽

Coke Plant ◽

Coke Oven ◽

Coke Battery ◽

Technological Parameters ◽

Heating Wall ◽

Blast Furnace Coke ◽

Start Up ◽

Coal Charge ◽

Furnace Coke

DEVELOPMENT OF RATIONAL TECHNOLOGICAL PARAMETERS FOR HEATING OF A COKE BATTERY WITH A STAMPED CHARGING OF COALS © V.I. Goncharov, I.I. Sikan, Ya.I. Dyachuk, N.V. Mukina (Coke production of PJSC «ArcelorMittal Kryvyi Rih», 50095, Dnipropetrovsk region, Kryvyi Rih, Kryvorizhstal str., 1, Ukraine), I.V. Shulga, PhD in technical sciences (State Enterprise "Ukrainian State Research Coal Chemical Institute (UHIN)", 61023, Kharkov, Vesnina st., 7, Ukraine) The article is devoted to the introduction at the PJSC «ArcelorMittal Kryvyi Rih» coke plant of a promising technology for compaction of a coal charge, which allows obtaining blast furnace coke of high mechanical and "hot" strength from charges characterized by an increased content of lean components of various stages of metamorphism. Under the present circumstances, this is of great importance for increasing the economic indicators of the production of blast furnace coke and the operation of blast furnaces. The start-up of coke oven battery No. 6, designed for the application of this technology, necessitated the determination of rational technological parameters of heating: the temperature level in the control verticals and the location of the burners for supplying coke oven gas in the vertical along the heating wall. The article presents the calculations, the results of which confirm the expediency of rationalizing the actual starting (design) distribution of burners on coke oven battery No. 6. First of all, attention is drawn to the insufficient diameters of the holes in the burners for the extreme and pre-extreme verticals. This, according to the authors, caused underheating of the head zones and resin spills, which were observed during start-up operations on the battery. The replacement of burners at the edges of the walls by large diameters, carried out by the personnel of the coke shop of the coke plant PJSC “ArcelorMittal Kryvyi Rih” and LLC “Koksokhimstanciya”, combined with the full opening of the recirculation windows in these zones, improved the heating of the charge and significantly reduced the intensity of spills. The experience gained was taken into account when locating the control devices at coke oven battery No. 5, which was put into operation later. The article also formulates recommendations for adjusting the temperature regime of coking, depending on the grade and component composition, as well as the technological properties of coal charges. Keywords: coke oven battery, stumping of coal charge, temperature in control verticals, location of burners along the length of the heating wall. Corresponding author Ya.I. Dyachuk, е-mail: [email protected]

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

Journal of Coal Chemistry ◽

10.31081/1681-309x-2021-0-2-28-36 ◽

2021 ◽

Vol 1 ◽

pp. 28-36

Author(s):

A.Yu. Martynova ◽

V.A. Saraeva ◽

A.I. Larina

Keyword(s):

Sodium Hydroxide Solution ◽

Coke Oven ◽

Coke Production ◽

Sulfur Compounds ◽

Raw Material ◽

Test Substance ◽

Material Base ◽

Chemical Production ◽

Coke Oven Gas ◽

Environmental Objects

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

Journal of Coal Chemistry ◽

10.31081/1681-309x-2021-0-3-8-20 ◽

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]

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