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The idea of this paper is to properly utilize Indian low-rank coking coal (semi-coking coal) with the blending of high-rank imported coals and to reduce the overall cost of coke making. The blending of the coals has been done in two phases.
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The quality and cost of coke are directly affected by the proportion of different categories of coal, while the coal blending in coking process is a complex one with multiple objectives and constraints. In this study, a multi-objective simulated annealing algorithm (MOSA)-based coal blending optimization approach in coking process is proposed. The …
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The coking test of blending anthracite and un-coking coal was carried out,and the influence of coal modif-ying additive( ZBS) on the blended coal and coke's quality was studied. Experimental results show that the optimal scheme is blending 81% original blended coal,5% anthracite,10% un-coking coal,4% fat coal and 0. 08% ZBS. …
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The development of coking industry with high energy consumption and pollutant emission was constrained by the requirements for "Emission peak and Carbon neutrality". The long process blast furnace smelting was the dominant method for producing iron and steel in China, resulting in a sustained demand for high-quality coke. ... The …
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Optimizing coal blending is important for high-quality development of coking industries, among which deep understanding of relationships between coal characteristics and coke quality is critical. This work selected four typical coals from Shanxi Province in China to investigate influences of their structures and properties on coke …
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Coking coals are used for metallurgical purposes and the majority of it being used for iron and steel making. In India, there is a limited resource of prime coking coal, because of which these low ...
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To provide opportunity to blend different coals to meet specific end-user requirements. Coal storage can occur along the whole coal supply chain from the mine to the preparation plant, transhipment facility and end user site (such as a power plant, coking plant or cement plant). ... there is a greater need for coal blending capability in ...
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A Glencore-led consortium deal to buy Canadian miner Teck Resources' steelmaking coal unit for $9 billion puts in focus the commodity giant's bet on the role of coking coal in the green energy ...
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A coal-blending model has been developed using relationships between coal and coke quality parameters. This coal-blending model gives a least-cost coal blend for the desired coal blend quality in terms of ash, volatile matter, mean maximum reflectance, and coke quality based on the coke strength and ash content. The model takes into …
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An approach to robust optimization (RO) of coal blending operations is proposed. RO model determines the most profitable blending plan at acceptable risk …
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@misc{etde_20021386, title = {Management of coal stockpiles} author = {Carpenter, A M} abstractNote = {Stockpile management is an important part of the coal handling process from mine to customer. Virtually all coal producers and consumers make use of stockpiles at their facilities, either to serve as a buffer between material delivery …
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Coking coal is essential to the large-scale production of steel, and the quality of the coking coal significantly contributes to the quality of the produced steel. High quality coking coal has low ash content and a prescribed range of properties including volatile matter content and predicted coke strength. These measures can be improved by processing the raw …
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Worldwide, the cokemaking process has remained more or less unchanged for over 100 years, and metallurgical coke is produced in recovery and nonrecovery coke ovens by using top gravity and stamp charging and a wide range of coal bases.As BFs have been operated with coke, it has been urged globally to reduce the coke cost more …
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The Ministry of Coal projects a need for 161 million tonnes of coking coal by 2030, considering National Steel Policy 2017. Stamp charging technology for coke production is seen as a critical factor.
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generating more efficient and effective coal blending solutions for coking plants, as compared to their original counterparts. Keywords: Coal Blending · Coke Index Prediction · Multi-objective Optimization · Constrained Optimization Problem · Transformer 1 Introduction Coal blending and coking [1] is the core process segment of the coking ...
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Coking Product Coarse Coal Product 13c Fine Coal Product 17 Ultra Fine Product Coking Product PrirmryProduct Yield (ad) 487 641 69.9% Ash (dry) Sulphur (ad) CSN 61/2 7 1/2 11.6 8.5 5.5 10.8 0.73 0.56 0.48 0.68 UHG Blend - seek 10.5%, (dry) target ash Coking Product Coarse Coal Product 13c Fine Coal Product 17 Ultra Fine Product …
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Management of coal stockpiles Anne M Carpenter CCC/23 October 1999 ... or to enable coal blending to meet quality requirements. With mounting pressure to minimise the capital tied up in stockpiles, there is a need to optimise coal inventories. ... 5.3 Coal cleaning 28 5.4 Combustion 29 5.5 Coking 31 5.6 Comments 34
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Virtually all coal producers and consumers make use of stockpiles at their facilities, either to serve as a buffer between material delivery and processing or to …
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coking coal globally, two for PCI coal, one for semi-soft coking coal and four for metallurgical coke, for locations of loading/ delivery detailed in the table below. Platts also assesses 17 individual brand relativities daily on a CFR China basis and 11 on FOB Australia basis, as well as a range of metallurgical coal
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DOI: 10.1016/j.jaap.2024.106504 Corpus ID: 269201835; Investigation into the impact of coal blending on the carbon structure of chars obtained from Chinese coals during coking
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Hence, it requires an ideal blending strategy such that the coking coal having the optimal combination of all of its properties can be used for maximum benefit to the steel making process. Design/methodology/approach. In this paper, a multi-criteria decision-making approach is proposed while integrating preference ranking organization …
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Coking chemistry is the subject of relative theories, technologies, processes, and equipment of process where main material coal in the condition of isolating air is researched, and coal is transformed into coke (or semicoke) and raw gas after physicochemical action like thermolysis and coking, and the raw gas is purified and …
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Coal blending and coking [] is the core process segment of the coking industry.Here, coal blending refers to the mixing of a variety of single-coals into mixed-coal according to complex process constraints, and the composition and proportion of different single-coals in the mixed-coal is the coal blending scheme.
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The multi-period blending model incorporates stockpiling of raw material, and explicitly captures the geological variability of coal using chance constraints. A case …
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The preservation of metallurgical coal and coke cost reduction are gaining much importance in iron and steel industry. The effort is being made worldwide to increase the use of inferior grade coking coal/non-coking coal in coke making. The objective of this study was to maximize the use of non-coking coal in the coal blend without …
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Coal blending optimization of coal preparation production process is one of the most important segments in the schedule of coal preparation production, and the last link of product quality control ...
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Coal blending Wikipedia. Coal blending is the process of mixing coals after coal has been mined to achieve quality attributes that are desirable for the coal's intended application (eg steam generation, coking) The quality attributes that are most important in blending will differ from one mine site to another and also depend on how the coal seams vary in …
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The present paper deals with the optimal planning for blending of coal of different grades for beneficiation of coal with a view to satisfy the requirements of the …
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The accurate prediction of coke quality is important for the selection and valuation of metallurgical coals. Whilst many prediction models exist, they tend to perform poorly for coals beyond which the model was developed. Further, these models general fail to directly account for physical interactions occurring between the blend components, …
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