Production Of Metallurgical Coke Research Articles

Аналіз та огляд прогнозів світового виробництва металургійного коксу

DOI: 10.31081/1681-309X-2024-0-1-3-7 Specialty 161. U.D.C. 338.27:662.749.2 ANALYSIS AND REVIEW OF FORECASTS OF WORLD METALLURGICAL COKE PRODUCTION © S.A. Kravchenko, PhD in Technical Sciences, S.V. Chaplianko, PhD in Technical Sciences "STATE INSTITUTE FOR DESIGNING ENTERPRISES OF COKE OVEN AND BY-PRODUCT PLANTS'' (SE "GIPROKOKS''), 61002, 60 Sumska str., Kharkiv, Ukraine) The article considers and analyses the volumes of global iron and steel production in 2019-2023. It is shown that during this period it had fluctuating trends: the deviation between the minimum and maximum values was 109 million tonnes (7.7 %) for iron and 112 million tonnes (5.7 %) for steel. Domestic steel production in 2019-2021 was characterised by an increase of 1.1 million tonnes (5.2 %) in iron and fluctuations (the deviation was 0.8 million tonnes, i.e. 3.7 %) in steel, and a sharp decrease of 14.8 million tonnes (69.7 %) in steel. t (69.8 %) for iron and 15.1 million tonnes (70.6 %) for steel in 2022 and a further decrease of 0.4 million tonnes (6.2 %) for iron and 0.1 million tonnes (1.6 %) for steel in 2023 is due to the consequences of Russia's armed aggression against Ukraine. The article considers and analyses the volumes of global production of metallurgical coke in 20192021. It is shown that during this period it had fluctuating trends: the deviation was 21 million tonnes (3.0 %). The volume of coke production in China in 2020-2023 increased at an average annual growth rate of 2.2, 2.4, and 3.8 %, respectively. Domestic production of metallurgical coke in 20192021 was characterised by a decrease in volume by 0.44 million tonnes (5.2 %), and a rapid decrease by 5.6 million tonnes (59.0 %) in 2022 is also due to the consequences of armed aggression. Separate forecasts for global metallurgical coke production in the short and long term are considered. It is shown that there is no consensus on the development of global coke production. The most negative scenario is a decline in global coke production to $84.016 billion (USD) in 2029, while the most positive is an increase to $325.78 billion in 2034. In 2024, on average, the global metallurgical coke market will be around $106 billion according to negative forecasts and around $205 billion according to positive forecasts. Given the World steel Association's weak positive outlook for global steel production, as well as the existing increase in coke production in China in 2020-2023 and the planned expansion of coke production capacity in India and Brazil, a restrained positive outlook for global coke production is most likely (for 2024 and beyond). Keywords: cast iron, steel, metallurgical coke, coke-chemical production, analysis, forecast. Corresponding author S.V. Chaplyanko, e-mail: chaplianko_sv@ukr.net

Microalgae blending for sustainable metallurgical coke production – Impacts on coking behaviour and coke quality

The steel industry is responsible for approximately 7% of global greenhouse gas emissions, mainly in the form of CO2 from the blast furnace ironmaking process. Among several strategies proposed to reduce CO2 emission, the partial replacement of coal with biomass during the cokemaking process has gained increasing interest. However, such replacement with lignocellulosic biomass species demonstrates a detrimental effect on coke quality. In this work, as an alternative to lignocellulosic biomass, the use of microalgae biomass (Chlorella vulgaris) is discussed for coal blending and bio-coke production. Three Australian metallurgical coal samples, varying in rank and fluidity, were blended with microalgae at up to 10 wt% to evaluate the impact of biomass addition rate on coking behaviour and coke quality. The work evaluates the impact of microalgae on coal blend properties, coking performance, and coke quality and strength (CSR/CRI, microtexture, and coke reactivity). The results demonstrated that microalgae blending with high-rank premium metallurgical coals did not adversely affect thermoplastic properties during coking or resultant bio-coke quality. Furthermore, the reactivity under simulated blast furnace conditions showed that microalgae addition led to a slight increase of up to 4.4% in coke gasification reactivity, which was attributed to the higher alkali content and isotropic textures in coke. Unlike lignocellulosic biomass, in bio-cokes produced by blending microalgae no porous and fibrous structures related to the biochar structure were identified. It was postulated that this non-fibrous nature of microalgae allows cokes to maintain their strength even for blending up to 10 wt%.

Carbon Additives of Petroleum Origin in Coal Mines and Prospects for Their Industrial Production

The possibility of qualified use of heavy oil residues and oil refining waste as carbon additives in coal charges in the production of metallurgical coke is considered. The involvement of petroleum coke fines and coking additives in coal charges can significantlyimprove the operational properties of blast furnace coke. The available and promising technologies for obtaining sintering additives using heavy oil residues are considered and compared.

Аналіз світового виробництва металургійного коксу й огляд прогнозів

ANALYSIS OF GLOBAL METALLURGICAL COKE PRODUCTION AND FORECASTS REVIEW © S.A. Kravchenko, PhD in Technical Sciences, S.V. Chaplianko, PhD in Technical Sciences, A.A. Kogtin (STATE ENTERPRISE "STATE INSTITUTE FOR DESIGNING ENTERPRISES OF COKE OVEN AND BY-PRODUCT PLANTS'' (SE "GIPROKOKS'')", 60 Sumska str., Kharkiv, 61002, Ukraine) Taking into account, that met coke production volume is determined by blast furnace production need, and blast furnace production is determined by steelmaking production need, the analysis of the world pig iron and steel production in 2019 - 2021 and for 6 months of 2022 has been done. It has been shown, that in the specified period, the world metallurgical production had fluctuating trends: ±29 million tons (±2,0 %) for iron and ±53 million tons (±2,7%) for steel. Domestic metallurgical production in 2019 – 2021 was characterized by an increase in volume by 1,1 million tons (5,2 %) for iron and a fluctuation of ±0,4 million tons (±1,9 %) for steel, in January - September 2022 took place the impetuous decrease by 6,2 million tons (57,9%) for iron and by 6,3 million tons (58,2 %) for steel, compared to the same period in 2021, which due to the consequences of the armed aggression of the Russian Federation against Ukraine. The world met coke production in 2019 - 2021 had fluctuating trends: approximately ±27 million tons (±3,9 %). Domestic met coke production in 2019 - 2021 was characterized by a decrease in volume by 0,44 million tons (5,2 %), and in January - November 2022 took place the impetuous decrease by 4,3 million tons (58,1 %), compared to the same period in 2021, which one also is related to the consequences of armed aggression. Some the world met coke production forecasts for 2023 – 2030 have been considered. It has been shown, that there is no consensus on the world coke production development. The most negative, among those considered, is the scenario of a decrease the world coke production to 87,7 billion USD at the end of 2028, the most positive – an increase to 264,6 billion USD in 2030. Considering the global steel production forecast from Worldsteel Association, the most probability is a restrained forecast with fluctuating trends in 2023 – 2024 and increase in the future due to urbanization in the Asia-Pacific region. Keywords: pig iron, steel, metallurgical coke, coke-chemical production, analysis, forecast Corresponding author S.V. Chaplianko e-mail: chaplianko_sv@ukr.net

Petroleum coking additive - raw material component for metallurgical coke production. Part 2. Experimental studies of obtaining a petroleum coking additive

Petroleum coke is a potential partial replacement of coking coals (being in short supply) in manufacture of metallurgical coke; in Russia and other CIS countries it was entitled as petroleum coking additive (PCA), petroleum coke with output of volatile substances within the range 15-25 %. The second part of the work describes the results of conducted experimental researches in the field of manufacture of petroleum coke additive on the example of use of two kinds of sulfuric petroleum residues of “KINEF” JSC as raw materials: residue of atmospheric distillation and mixture of residues of vacuum distillation and visbreaking. The research was conducted for two temperature procedures within the ranges 455-465 and 475-485 °С. Eight samples of carbon material were obtained as a result of conversion, and influence of input parameters of the coking process on composition and physical-chemical properties of obtained carbon materials was established. Based on content of volatile substances in petroleum coke additive and its group chemical composition, which was determined via extraction method (content of α-, β- and γ-fractions) and via infrared Fourier spectroscopy, assessment and ranging of the eight obtained PCA samples were carried out by their sintering susceptibility. Interpretation of infrared spectra of obtained PCA samples was conducted via comparison with infrared spectra of coking coal, which have identical absorption stripes. Relation between PCA sintering ability and procedure parameters of the coking process was revealed. It was determined that technological process occurring at the less coking temperature 455-465 °С provides high quality PCA forming, otherwise the procedure with higher temperature (475-485 °С). This work was carried out as part of the State Assignment 0792-2020-0010 “Development of scientific foundations of innovative technologies for processing heavy hydrocarbon raw materials into environmentally friendly motor fuels and new carbon materials with controlled macro- and microstructural organization of mesophase”.

THE ESTIMATION OF THE EFFECT OF COKE, OBTAINED WITH PARTICIPATION OF VOLUME-MODIFYING ADDITIVES, ON THE TECHNICAL AND ECONOMIC INDICATORS OF BLUST FURNACE SMELTING

The article deals with the effect of the coke resistance index CSR (Coke Strength after Reaction) on the technical and economic indicators of the blast furnace process. It is shown that in the production of metallurgical coke using volume-modifying additives in the amount of 0.25% by weight of the coal load, its strength improves, in particular, index CSR. As a volume-modifying additives, α-Al2O3 electrocorundum and α-SiC carborundum with a particle size of <45 μm and vibromilenum α-SiC carborundum with a particle size <12 μm were used.
 Due to the introduction of fine powders of electrocorundum and carborundum into the coal charge, the maximum increase in the coke post-reaction strength index (CSR) by 7.6% was obtained.
 The influence of changes in individual indicators of coke quality on its consumption and productivity of the blast furnace was assessed in accordance with the guidance document of the metallurgical division of Metinvest Holding LLC. This document contains a detailed methodology for use in analyzing fluctuations in specific coke consumption and throughput of blast furnaces influenced by changes in blast furnace process parameters (by factor analysis). This technique is based on quantitative relationships between changing parameters (factors) and specific coke consumption (blast furnace productivity).
 There has been made an expert technical and economic assessment of the feasibility of introducing 0.25% fine powdered α-Al2O3 and α-SiC powders into the mixture from the point of view of blast-furnace production with pulverized fuel injection technology. The results show that, despite the increase in the cost of coke with the introduction of volume-modifying additives into the mixture, a reduction in the cost of iron can be achieved due to the expected reduction in the specific consumption of coke due to an increase in its post-reaction strength.

Petroleum coking additive is a raw material for production of metallurgical coke. Part 1. Formation of sintering properties of petroleum coking additive (review)

A significant proportion of the entire mass of waste from the oil refining industry is accounted for heavy sour oil residues, and one of the most common solutions in the world is the recycling of these wastes to obtain petroleum cokes. However, the high sulfur content often does not allow to find a qualified application and a market for the obtained sulfide carbon materials. In this work, a review of the scientific and technical literature on the industrial use of petroleum coking additive (PCA) - petroleum coke with a volatile matter yield of 15 to 25%, as a partial replacement for scarce coking coals in the charge in the metallurgical coke production. As a result of the review and analysis of scientific and technical literature, indicators were established that affect the formation of sintering properties of PCA and the boundary conditions for its use as part of a coal charge. It is shown that the use of petroleum coke with a volatile matter yield of less than 15% (wt.) worsens the quality of the obtained metallurgical coke, reducing its strength characteristics CSR and increasing its reactivity CRI, and the introduction into the coal charge from 5 to 50% (wt.) PCA with a content of volatile substances of 15–25% (wt.) provides an improvement in the quality of the resulting metallurgical coke. It is noted that, along with an important indicator, as the yield of volatile substances, which affects the formation of sintering properties of PCA, its group chemical composition, determined by solubility in various solvents (α-, β- and γ-fractions), plays an equally decisive role.The work was carried out within the framework of the State Assignment of the Ministry of Education and Science of the Russian Federation on NIR 0792-2020-0010 "Development of scientific foundations for innovative technologies for processing heavy hydrocarbon raw materials into environmentally friendly motor fuels and new carbon materials with controlled macro- and microstructural organization of the mesophase."

High-Strength Formed Coke from Torrefied Biomass and Its Blend with Noncaking Coal

In continuation of our previous study on production of high-strength metallurgical coke from torrefied softwood (cedar), we studied coke production from a mixture of torrefied cedar (TC) and noncaking coal by pulverization to sizes <100 μm, mixing, binderless hot briquetting, and carbonization. These sequential processes produced coke with a tensile strength of 5–17 MPa, which was equivalent to or greater than that of conventional coke (5–6 MPa), from TC-coal mixtures over the entire ranges of TC mass fraction in briquette of 0–100%, torrefaction temperature of 250–300 °C, and choice of coal (sub-bituminous or medium-volatile bituminous coal). The mixing of TC and coal hindered densification of coke due to hindrance of shrinkage of more-shrinkable TC-derived particles during the carbonization under many of the conditions. Nevertheless, positive synergy occurred in the coke strength at TC mass fractions of over 50%, where coal-derived particles were dispersed in the matrix of TC-derived particles, bonded to them during the carbonization, and behaved as a reinforcement of the matrix. The bonding between TC-derived and coal-derived primary particles was revealed by scanning electron microscopy. Copulverization of mixed TC and coal to sizes <40 μm before the briquetting gave cokes having strengths as high as 23–28 MPa. The fine pulverization increased the frequencies of mutual bonding of TC-derived particles and coal-derived particles and bonding between TC-derived and coal-derived particles per coke volume. The strength of coke from the TC-coal mixture generally followed volume-based additivity of strengths of cokes from TC and coal. This was realized by mixing primary particles of TC and coal within ≈10 μm scale or even smaller.

Improvement of coke strength by HDPE addition

ABSTRACT Plastic waste of different origin has been proposed and used as an additive in coal blends in metallurgical coke production for trace amounts for about two decades. Previous studies have suggested that high-density polyethylene (HDPE) can be used as an additive in coking blends for small quantities (2–3 wt% of the blend) without considerably damaging the strength properties of coke. Here, one HDPE-free and five HDPE-bearing laboratory-made cokes were produced and tested for their compressive cold strength and compressive hot strength. The temperature in the hot compressive strength tests was 1,700°C, corresponding to the temperature of the blast furnace bosh area near the tuyeres. The results showed that the trend of the cold compressive strength of coke increased as the amount of HDPE in the coking blend was increased from 0 wt% to 5 wt%. In hot compressive strength tests, cokes containing 3 wt% to 5 wt% of HDPE in the raw material blend showed non-breaking behavior, while the reference coke samples were crushed to pieces in the tests. Image analysis performed for the microscopic images of all experimental coke types revealed that the high number and area percentage of large pores impacted negatively on compressive strength of coke.

Metallurgical Coke Production with Biomass Additives: Study of Biocoke Properties for Blast Furnace and Submerged Arc Furnace Purposes.

Biocoke has the potential to reduce the fossil-based materials in metallurgical processes, along with mitigating anthropogenic CO2- and greenhouse gas (GHG) emissions. Reducing those emissions is possible by using bio-based carbon, which is CO2-neutral, as a partial replacement of fossil carbon. In this paper, the effect of adding 5, 10, 15, 30, and 45 wt.% biomass pellets on the reactivity, the physicomechanical, and electrical properties of biocoke was established to assess the possibility of using it as a fuel and reducing agent for a blast furnace (BF) or as a carbon source in a submerged arc furnace (SAF). Biocoke was obtained under laboratory conditions at final coking temperatures of 950 or 1100 °C. Research results indicate that for BF purposes, 5 wt.% biomass additives are the maximum as the reactivity increases and the strength after reaction with CO2 decreases. On the other hand, biocoke’s physicomechanical and electrical properties, obtained at a carbonization temperature of 950 °C, can be considered a promising option for the SAF.

Production and characterization of metallurgical coke from duduguru coal

This work illustrates the production and characterization of metallurgical coke from Duduguru coal, Obi local Government Area of Nasarawa State, Nigeria. The analytical assessment of properties such as proximate analysis, elemental composition, and calorific value are very important to know the coking qualities of the coal. The proximate analysis showed that the moisture content, ash content, volatile matter, fixed carbon and calorific values of the coal are; 1.86%, 18.82%, 43.74%, 53.58% and 5405.15 Cal/g respectively. Based on the result of the proximate analysis, the coal is of good metallurgical coke quality from an industrial prospective and heat generation is to be considered. Elemental analysis shows that due to the low heavy metals, low sulfur content and ash content of the coal, utilization of the coal within a safe environment is feasible with just a little environment impact and make it suitable for blending with strong coking or caking properties. Â

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

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.

Quality evaluation of metallurgical coke produced with sawdust and different mixtures of coal

Abstract The present research is dedicated to analyzing the addition of sawdust biomass, which is a carbonaceous raw material that may be used in coal blends for the production of metallurgical coke, preserving the required quality, with lower cost. The quality of metallurgical coke may be determined by the efficiency of its chemical, physical and thermal functions inside the blast furnace. For the production of hot metal, any modification in the constituents of the raw materials may have a direct influence on the blast furnace productivity and in the final quality of steel. From the thermal degradation analyzes such as coke reactivity index (CRI) and coke strength reaction (CSR), cold resistance (DI) and immediate analyzes, it may define the quality of metallurgical coke produced with biomass aiming at relating the parameters that interfere in the particularities of the material function in the blast furnace. Some results show that it is possible to use 2% of eucalyptus sawdust in the coal mixture.

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

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.

Study of possibilities to use coal of K&lt;sub&gt;18&lt;/sub&gt; bed of “Abayskaya” mine of Karaganda coal field for the production of coke

I view of furnace equipment at coke-making plants getting old and deterioration of coal base, preliminary study of quality of coals, involved into production of metallurgical coke becomes more and more actual. Such a parameter of a coal, like spreading pressure during its coking if an item of particular interest. Results of a study of composition and properties of bed K 18 coal of “Abayskaya” mine of Karaganda coal field presented, as well as results of technical and chemical analysis of the coke. Study of spreading pressure during coking of bed K 18 coal concentrate and various charge mixtures with it was accomplished in a laboratory coking furnace, representing a steel container of rectangular form with dimensions 1000×200×600 mm. It was established that the studied coal had a high spreading pressure, reaching 31 KPa and was not inclined to shrinkage after sintering. Chronograms of temperature variation by coking zones presented as well as variation of spreading pressure during coking of K 18 coal. It was shown, that the coke obtained at K 18 bed coal coking had high indices of hot strength and reaction ability (56,8 % CSR, 22,9 % CRI). A method was elaborated to decrease the spreading pressure of bed K 18 coal and to reach maximum shrinkage of coke cake during coking by assortment of charge composition by mixing coal fines and concentrates from several coal mines. As a result of coal charges coking in an enlarged laboratory coking furnace, a charge composition was determined which enabled to use concentrate of K 18 bed coal of “Abayaskay” mine in a volume of 10% of the charge mass without exceeding acceptable spreading pressure of &lt;7 KPa.

Adsorption method for determining the texture characteristics of Kuzbass fossil coals of the metamorphism series

The presented work is devoted to the study and development of a technique for measuring the parameters of the porous structure of fossil coals in Kuzbass by the adsorption method on an ASAP 2020 analyzer “Micromeritics”. The conditions for sample preparation of samples were selected, which make it possible to record reproducible isotherms of low-temperature adsorption-desorption of nitrogen (77K) by the studied samples of fossil coal of various grades. The obtained isotherms of low-temperature adsorption-desorption of nitrogen were used to determine the textural characteristics of Kuzbass fossil coals by various methods (the specific pore surface area was calculated using the Brunauer-Emmett-Taylor (BET) method; the volume of micropores was determined using the comparative t-Plot method; the mesopore volume was determined using the method of Barrett-Joiner-Halenda (BJH). The obtained values of the textural characteristics of Kuzbass coals of the metamorphism series make it possible to reveal their macro-and microstructural features, to obtain information on the adsorption properties of coal, and can also be used to optimize coal use processes, such as the extraction of methane from coal seams, gasification, combustion, liquefaction, beneficiation, production of metallurgical coke.

The use of waste ion exchange resins as components of the coal charge for the production of metallurgical coke

In this research an innovative method to utilise waste ion exchange resins (WIER) is investigated. The aim of the study is to evaluate the impact of WIER addition to coke quality. For this purpose, industrial tests were performed with different share of WIER and the resultant cokes were studied by means of standard coke analytical techniques, as well as microscopic examinations. By combining optical and SEM petrographical examination it is revealed that the pyrolyzed IER occurs predominantly as separate spheres within the coke matrix, by having extremely durable sulfur bridge bonds. This observation can explain the improvement of the mechanical strength of the produced coke expressed by “cold” indices of MICUM test. Moreover, the coke parameters related to susceptibility to gasification with CO2, like CRI and CSR parameters, seem to be also affected since the chars created from WIER in the coke matrix are more reactive than the coke matter originated from coal. This first step towards a potential recycling of WIER shows that by the addition of WIER up to 3% the coke quality parameters, such as sulfur content or abrasion (M10), are adversely affected. The coking plants may still accept this small (1–3%) impact of polymer waste in the coal feedstock, without significant impacts in their production yields.

Production of Metallurgical Coke by the Pyrolysis of Peat, Biomass, and Tar Mixtures

The production of metallurgical coke by the low-temperature pyrolysis of peat, biomass, and tar mixtures was investigated. Data on the effects of the preliminary treatment of raw mixtures, the tar content of the mixtures, and the process temperature on the characteristics of the products obtained are presented. It was experimentally established that the maximum yield of semicoke was achieved with a tar content of 20–40%, and the addition of tar to the mixture increased the mechanical strength of the resulting semicoke.

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

In recent past, Jindal Steel &amp; 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.

Production of Metallurgical Coke from Low Rank Coal Utilizing Wet Oxidation

Production of Metallurgical Coke from Low Rank Coal Utilizing Wet Oxidation