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Kinetics Of Iron Ore Reduction
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Book Synopsis The Reduction of Iron Ores by : Ludwig von Bogdandy
Download or read book The Reduction of Iron Ores written by Ludwig von Bogdandy and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the English edition the book was revised by the authors, taking into account a number of suggestions of the readers of the German edition. Some of the most important publications in the field of iron ore reduction, which appeared since 1967, have been used to bring the manuscript as far as possible up to date. The kind assistance of Dr. K. BOHNENKAMP of the Max-Planck-Institut fUr Eisenforschung, Dusseldorf, was much appreciated in this respect. Ohapters 2.9 and 2.10, dealing with the reduction of molten oxide slags by solid carbon and with the contribution of the water-gas reaction to iron ore reduction, have been added for the English edition. Ohapter 2.9 has been completely revised with the kind assistance of Dr. H. J. GRABKE, Stuttgart. Dipl.-Ing. J. LODDE contributed to this edition by revising the bibliography. Owing to the rapid development of the blast furnace it was necessary to revise Ohapter 5 considerably. In this field many valuable suggestions have been made by Dipl.-Ing. G. LANGE and Dipl.-Ing. P. HEINRICH. Furthermore, Ohapters3 and 4 have been thoroughly revised by Dr.-Ing. E. FORSTER and Dr.-Ing. U. SCHIERLOH. Last, but not least, we have to thank our translators for their excellent work.
Book Synopsis Studies in the Kinetics of Iron Ore Reduction by :
Download or read book Studies in the Kinetics of Iron Ore Reduction written by and published by . This book was released on 1963* with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gas-Solid Reactions by : Julian Szekely
Download or read book Gas-Solid Reactions written by Julian Szekely and published by Elsevier. This book was released on 2012-12-02 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas-Solid Reactions describes gas-solid reaction systems, focusing on the four phenomena—external mass transfer, pore diffusion, adsorption/desorption, and chemical reaction. This book consists of eight chapters. After the introduction provided in Chapter 1, the basic components of gas-solid reactions are reviewed in Chapter 2. Chapter 3 describes the reactions of individual nonporous solid particles, while Chapter 4 elaborates the reaction of single porous particles. Solid-solid reactions proceeding through gaseous intermediates are considered in Chapter 5. Chapter 6 deals with the experimental approaches to the study of gas-solid reaction systems. How information on single-particle behavior may be used for the design of multiparticle, large-scale assemblies, and packed- and fluidized-bed reaction systems is deliberated in Chapter 7. The last chapter covers the specific gas-solid reaction systems, including some statistical indices indicating the economic importance of the systems and processes it’s based on. This publication is recommended for practicing engineers engaged in process research, development, and design in the many fields where gas-solid reactions are important.
Book Synopsis Kinetics of Iron Ore Reduction by : Chun-Hao Koo
Download or read book Kinetics of Iron Ore Reduction written by Chun-Hao Koo and published by . This book was released on 1977 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in the Kinetics of Iron Ore Reduction by :
Download or read book Studies in the Kinetics of Iron Ore Reduction written by and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in the Kinetics of Iron Ore Reduction by :
Download or read book Studies in the Kinetics of Iron Ore Reduction written by and published by . This book was released on 1965 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis SPONGE IRON PRODUCTION BY DIRECT REDUCTION OF IRON OXIDE by : AMIT CHATTERJEE
Download or read book SPONGE IRON PRODUCTION BY DIRECT REDUCTION OF IRON OXIDE written by AMIT CHATTERJEE and published by PHI Learning Pvt. Ltd.. This book was released on 2012-09-12 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is ‘directly reduced’ in the solid-state, using either natural gas or non-coking coal, to produce a highly metallised material, referred to as sponge iron (or direct reduced iron). This intermediate product is subsequently melted in electric arc furnaces or induction furnaces (sometimes even in basic oxygen furnaces) to produce liquid steel. Such a process combination enables steel to be produced without using coking coal, which is an expensive input in the normal blast furnace—basic oxygen furnace route of steelmaking adopted in integrated steel plants. The book offers comprehensive coverage and critical assessment of various coal-based and gas-based direct reduction processes. Besides dealing with the application of the theoretical principles involved in the thermodynamics and kinetics of direct reduction, the book also contains some worked-out examples on sponge iron production. The concluding part of this seminal book summarises the present and future scenario of direct reduction, including the use of gas generated from coal in direct reduction processes. The book is primarily intended for the undergraduate and postgraduate students of metallurgical engineering. It is also a must-read for researchers, technologists and process metallurgists engaged in the rapidly developing field of direct reduction of iron oxides, which is of critical importance for India and other developing nations that are beginning to play a major role in global steelmaking.
Book Synopsis The Kinetics of Iron Ore Reduction by : H. U. Ross
Download or read book The Kinetics of Iron Ore Reduction written by H. U. Ross and published by . This book was released on 1972 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Clean Ironmaking and Steelmaking Processes by : Pasquale Cavaliere
Download or read book Clean Ironmaking and Steelmaking Processes written by Pasquale Cavaliere and published by Springer. This book was released on 2019-07-18 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the available technologies that can be employed to reduce energy consumption and greenhouse emissions in the steel- and ironmaking industries. Ironmaking and steelmaking are some of the largest emitters of carbon dioxide (over 2Gt per year) and have some of the highest energy demand (25 EJ per year) among all industries; to help mitigate this problem, the book examines how changes can be made in energy efficiency, including energy consumption optimization, online monitoring, and energy audits. Due to negligible regulations and unparalleled growth in these industries during the past 15-20 years, knowledge of best practices and innovative technologies for greenhouse gas remediation is paramount, and something this book addresses. Presents the most recent technological solutions in productivity analyses and dangerous emissions control and reduction in steelmaking plants; Examines the energy saving and emissions abatement efficiency for potential solutions to emission control and reduction in steelmaking plants; Discusses the application of the results of research conducted over the last ten years at universities, research centers, and industrial institutions.
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 Studies in the Kinetics of Iron Ore Reduction by :
Download or read book Studies in the Kinetics of Iron Ore Reduction written by and published by . This book was released on 1963* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 CO Reduction of Hematite to Magnetite and the Effect of Silica by : John C. Nigro
Download or read book Kinetics of CO Reduction of Hematite to Magnetite and the Effect of Silica written by John C. Nigro and published by . This book was released on 1973 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Kinetics and Mechanisms of Iron Ore Reduction in Ore/coal Composites by :
Download or read book A Study of Kinetics and Mechanisms of Iron Ore Reduction in Ore/coal Composites written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Kinetics and Mechanisms of Iron Ore Reduction in Ore/coal Composites by :
Download or read book A Study of Kinetics and Mechanisms of Iron Ore Reduction in Ore/coal Composites written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Reduction Kinetics of Iron Ore Pellets by Noncokingcoal by :
Download or read book Study of Reduction Kinetics of Iron Ore Pellets by Noncokingcoal written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Demand of sponge iron and pre-reduced pellets for the manufacture of different varieties of steel is increasing day by day and new solid reductant based sponge iron plants are being commissioned. In the existing blast furnace an increase in production by at least 25 to 35% can be achieved by using pre reduced iron ore. Pre-reduced iron ore pellets have been established as a good substitute for steel scrap in an electric arc furnace which enhances the productivity of the arc furnace. Also majority of fines which are generated during the course of handling, mining, transportation etc are exported at a through away price which need to be utilized by making iron ore pellets for sponge iron making. A lot of investigations have been carried out on direct reduction process of iron oxides by carbonaceous materials, but little work has been done on the characterization of properties and reduction behavior of iron ore of some mines of Orissa. In the present project work, an attempt has been made to study the reduction behavior and kinetics of fired iron ore pellets. The effect of different reduction parameters such as temperature (850-10000C), time (15-120 min.), reductant quality, pellets Vs lump, mixing of particles of different sizes at different ratios for pellet preparation etc. on the reduction behavior of iron ore pellets. These form the subject matter of the thesis. First chapter gives the introduction of the subject. It speaks about the need of DRI industry, scope, present status and future planning of DRI industry in India, world wise DRI production, etc. It also presents the mechanism of direct reduction process. The second chapter shows the literature review. The third chapter deals with planning of experiments, selection of raw materials, preparation of samples, preparation of iron ore pellets, experimental procedure for characterization of different chemical and strength properties of the selected iron ore lump, proximate analysis of selected noncoking coals, ev.
Book Synopsis On the Reduction Kinetics of Iron Ore with Coal by : M. S. Chen
Download or read book On the Reduction Kinetics of Iron Ore with Coal written by M. S. Chen and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments are reported on the reduction of iron ore with coal under i atm nitrogen and 900 C. Discussions on the effects of the following factors on the reduction rate are given: (1) different iron ore and different coal, (2) iron ore substituted by sludges, (3) addition of fluxes, (4) addition of catalyst and (5) addition of catalyst and fluxes simulataneously. [Authors' abstract].
