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Reduction Kinetics Of Iron Ore Graphite Composite Pellets
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Book Synopsis Reduction Kinetics of Iron Ore-Graphite Composite Pellets by : Dr. Golap Mohammad Chowdhury
Download or read book Reduction Kinetics of Iron Ore-Graphite Composite Pellets written by Dr. Golap Mohammad Chowdhury and published by LAP Lambert Academic Publishing. This book was released on 2010-11 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rate of reduction of iron ore-graphite composite pellets under inert and reducing atmospheres has been investigated in a tailor made thermo-gravimetric packed-bed reactor. A very low overall apparent activation energy estimated from experimental data indicates that the reduction is not chemical kinetics controlled. A kinetic model has been developed to quantify the temporal evolution of different iron oxide phases and metallic iron. The rate-dependent parameters (frequency factors and activation energy) have been estimated from experimental data by applying an optimization tool (Genetic Algorithm). The predicted phases at various degrees of reduction were verified by X-ray diffraction and metallographic investigation. A simplified thermal model has also been developed to show the role of heat transfer on the kinetics of the reduction process under inert atmosphere. The reduction kinetics of the composite pellets in the packed bed under reactive atmosphere is not heat transfer controlled and might possibly be controlled by CO-gas mass transfer through the pellets.
Book Synopsis Kinetics of Iron Ore Reduction by Coal and Charcoal by :
Download or read book Kinetics of Iron Ore Reduction by Coal and Charcoal written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present investigation, an attempt has been done to study the simultaneous effects of the major processing variables on the extent of reduction of iron ore pellets surrounded by coal or charcoal fines in an externally heated cylindrical steel container (diameter 5cm and height 10cm) placed in muffle furnace. The project goal is to compare the reduction potential of coal and charcoal in reduction of iron ore pellets. Wood charcoal contains very low levels of gangue, sulphur and volatile matter therefore, presenting itself as a very desirable reductant for the reduction of iron ore. The variables studied are time and temperature. The reduction was done at temperatures 8500C, 9000C, 9500C and 10000c. The percentage (degree) of reduction of pellets was calculated at 15, 30, 45, 60 and 90 minutes, after the furnace reached the predetermined reduction temperature. The experiments were statistically designed such that the effect of each variable can be quantitatively assessed and compared. The results showed that, there is an increase in degree of reduction with increase in time and temperature and use of charcoal instead of coal also increased the degree of reduction due to higher fixed carbon content of charcoal. The percentage of swelling showed a random variation with time and temperature. The activation energy for the reduction of iron ore pellet was found to be higher in case of coal as compared to that of in case of charcoal; this indicates that reduction of iron ore by charcoal will be more favorable in case of charcoal.
Book Synopsis International Conference on Advances in the Theory of Ironmaking and Steelmaking (ATIS 2009), December 09-11,2009 by : Govind S. Gupta
Download or read book International Conference on Advances in the Theory of Ironmaking and Steelmaking (ATIS 2009), December 09-11,2009 written by Govind S. Gupta and published by Allied Publishers. This book was released on 2009 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributed articles presented in the International Conference on Advances in the Theory of Ironmaking and Steelmaking; organized by the Dept. of Material Engineering, IISc., Bangalore.
Book Synopsis Reduction Kinetics of Iron Ore Pellets and the Effect of Binders by :
Download or read book Reduction Kinetics of Iron Ore Pellets and the Effect of Binders written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Reduction of Iron Ore Pellets with a particular percentage of binders i.e. 2% of Dextrine and 2% of Bentonite was carried out for the temperature range 900 to 1050°C. In reduction kinetic study the most satisfactory model was to taken, the slope of the initial linear region of fractional reduction vs. time curve was measured, which gives the rate constant (k). Ln k vs. 1/T plots were straight line from which Activation Energy was calculated. Pellets having different percentages of binders were reduced and compared to find the effect of binders.
Book Synopsis Alternate Methods of Ironmaking by : Sujay Kumar Dutta | Rameshwar Sah
Download or read book Alternate Methods of Ironmaking written by Sujay Kumar Dutta | Rameshwar Sah and published by S. Chand Publishing. This book was released on with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been prepared primarily for use by Students studying Ferrous Metallurgy (i.e., Iron and Steelmaking) at UG and PG level of Metallurgical and Materials Engineering, Research workers engaged in obtaining fundamental information in this field, and for Process Metallurgists to understand the processes in general and Sponge Iron Producers in particular. ; It also helps the practicing engineers who wish to apply the theoretical knowledge to the process they are operating. ;The book may very well be introduced as a Textbook for Elective subject in Third/Fourth year of UG programme in Metallurgical & Materials Engineering. ;The book consists of nine chapters in two parts; five chapters in Part-I: Direct Reduction Processes and four chapters in Part-II: Smelting Reduction Processes. In Part-I, the Chapter 1 deals with a brief introduction of the sponge iron and classification of the direct reduction processes with their advantages and limitations. Chapter 2 deals with the raw materials involved in direct reduced ironmaking and their characteristics. In Chapter 3, the physico-chemical principles and thermodynamics of reduction are highlighted. The details of different direct reduction (DR) processes are discussed in Chapter 4. The characteristics and uses of DRI as well as its effect on Electric Arc Furnace performance is discussed in Chapter 5.
Book Synopsis Emerging Trends in Mineral Processing and Extractive Metallurgy by :
Download or read book Emerging Trends in Mineral Processing and Extractive Metallurgy written by and published by Allied Publishers. This book was released on 2005 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributed articles presented at the Conference.
Book Synopsis Simulation of Reduction of Iron-oxide-carbon Composite Pellets in a Rotary Hearth Furnace by : Sabuj Halder
Download or read book Simulation of Reduction of Iron-oxide-carbon Composite Pellets in a Rotary Hearth Furnace written by Sabuj Halder and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the International Conference on Metallurgical Engineering and Centenary Celebration by : Sudipta Patra
Download or read book Proceedings of the International Conference on Metallurgical Engineering and Centenary Celebration written by Sudipta Patra and published by Springer Nature. This book was released on 2023-10-14 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents peer reviewed articles from The International Conference on Metallurgical Engineering and Centenary Celebration (METCENT 2023), held at Indian Institute of Technology (BHU) Varanasi, India from the 26-28th of October 2023. It covers wide areas of metallurgical and materials science, highlighting recent advancements in these areas, including but not limited to Advanced Steels, Computational Material Science, Recent Ferrous/Non-Ferrous Metallurgy Processes, Green Iron and Steel Making Technologies and others. METCENT 2023 provides a unique opportunity to all the Metallurgists, Materials Scientists, Academicians and Industry experts to share their experiences on this special occasion.
Book Synopsis Recovery and Utilization of Metallurgical Solid Waste by : Yingyi Zhang
Download or read book Recovery and Utilization of Metallurgical Solid Waste written by Yingyi Zhang and published by BoD – Books on Demand. This book was released on 2019-02-20 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: At present, a lot of metallurgical solid wastes have not been timely and effectively recycled, resulting in serious problems of environmental pollution and waste of resources. As a result, large-scale comprehensive utilization technologies have been initiated, including slag dry granulation technology, steel slag cement technology, slag wool technology, slag waste heat recovery technology, etc. The comprehensive utilization of metallurgical solid waste has attracted worldwide attention. It is an effective way to improve the utilization efficiency of resources and the added value of products by using scientific metallurgical solid waste recycling methods. This book intends to provide the reader with a comprehensive overview of metallurgical solid wastes comprehensive utilization technology. The comprehensive utilization methods of four representative metallurgical solid wastes are emphatically described, such as blast furnace slag, steel slag, tailings and metallurgical dust.
Book Synopsis Utilization of Simulated Coal Gases for Reducing Iron Oxide Pellets by : Larry A. Haas
Download or read book Utilization of Simulated Coal Gases for Reducing Iron Oxide Pellets written by Larry A. Haas and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prereduced Iron Ore Pellets by : Morris M. Fine
Download or read book Prereduced Iron Ore Pellets written by Morris M. Fine and published by . This book was released on 1970 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Issues in Metal Research: 2013 Edition by :
Download or read book Issues in Metal Research: 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Metal Research / 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Cast Metals Research. The editors have built Issues in Metal Research: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Cast Metals Research in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Metal Research / 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book שש כנפים לאחד written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 4th International Symposium on High-Temperature Metallurgical Processing by : Tao Jiang
Download or read book 4th International Symposium on High-Temperature Metallurgical Processing written by Tao Jiang and published by John Wiley & Sons. This book was released on 2013-02-21 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade, global metallurgical industries have experienced fast and prosperous growth. High temperature metallurgical technology is the backbone to support the technical, environmental, and economical needs for the growth. This symposium provides a stage to introduce the advancements and developments of new high temperature metallurgical technologies and their applications to the areas of processing of minerals, extraction of metals, preparation of refractory and ceramic materials, sintering and synthesis of fine particles, treatment and recycling of slag and wastes, and saving of energy and protection of environment.
Book Synopsis Sustainable Utilization of Metals by : Bernd Friedrich
Download or read book Sustainable Utilization of Metals written by Bernd Friedrich and published by MDPI. This book was released on 2020-05-23 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high demand for advanced metallic materials raises the need for an extensive recycling of metals and such a sustainable use of raw materials. "Sustainable Utilization of Metals - Processing, Recovery and Recycling" comprises the latest scientific achievements in efficient production of metals and such addresses sustainable resource use as part of the circular economy strategy. This policy drives the present contributions, aiming on the recirculation of EoL-streams such as Waste Electric and Electronic Equipment (WEEE), multi-metal alloys or composite materials back into metal production. This needs a holistic approach, resulting in the maximal avoidance of waste. Considering both aspects, circular economy and material design, recovery and use of minor metals play an essential role, since their importance for technological applications often goes along with a lack of supply on the world market. Additionally, their ignoble character and low concentration in recycling materials cause an insufficient recycling rate of these metals, awarding them the status of “critical metals”. In order to minimize losses and energy consumption, this issue explores concepts for the optimization concerning the interface between mechanical and thermal pre-treatment and metallurgical processes. Such new approaches in material design, structural engineering and substitution are provided in the chapters.
Book Synopsis 6th International Symposium on High-Temperature Metallurgical Processing by : Tao Jiang
Download or read book 6th International Symposium on High-Temperature Metallurgical Processing written by Tao Jiang and published by Springer. This book was released on 2016-12-23 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis, development, and/or operation of high temperature processes that involve the production of ferrous and nonferrous metals, alloys, and refractory and ceramic materials are covered in the book. The innovative methods for achieving impurity segregation and removal, by-product recovery, waste minimization, and/or energy efficiency are also involved. Eight themes are presented: 1: High Efficiency New Metallurgical Process and Technology 2: Fundamental Research of Metallurgical Process 3: Alloys and Materials Preparation 4: Direct Reduction and Smelting Reduction 5: Coking, New Energy and Environment 6: Utilization of Solid Slag/Wastes and Complex Ores 7: Characterization of High Temperature Metallurgical Process
Book Synopsis Minerals—Advances in Research and Application: 2012 Edition by :
Download or read book Minerals—Advances in Research and Application: 2012 Edition written by and published by ScholarlyEditions. This book was released on 2012-12-26 with total page 951 pages. Available in PDF, EPUB and Kindle. Book excerpt: Minerals—Advances in Research and Application: 2012 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Minerals. The editors have built Minerals—Advances in Research and Application: 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Minerals in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Minerals—Advances in Research and Application: 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
