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Reduction Kinetics Of Iron Ore Pellets Made By Addition Of 100 Size Fines In Conventional Pellets
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Book Synopsis "Reduction Kinetics of Iron Ore Pellets Made by Addition of -100# Size Fines in Conventional Pellets." by :
Download or read book "Reduction Kinetics of Iron Ore Pellets Made by Addition of -100# Size Fines in Conventional Pellets." written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing trend in the prices of steel scrap and its short supply led the steel technologists to find a suitable charge mix in the form of sponge iron or Direct Reduced Iron (DRI). Sponge Iron or DRI is obtained from the direct reduction of iron ore and has iron content between 84 to 95 percent. Technically and technologically, sponge iron has been found to be a suitable material for charging in blast furnaces. In the existing blast furnace an increase in production by at least 25 to 35% can be achieved by using pre reduced iron ore. Sponge iron is a better substitute for scrap for steelmaking through EAF / IF routes due to its homogenous nature, Improved productivity and lower coke consumption. 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. According to industry experts, the preference for usage of DRI will lead to the use of 80 percent DRI in the charge mix in EAFs by 2009-10 which may even reach the 85 percent level by 2011-12 in the various regions of India. 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 (900-950°C), time (15-60 min.), reductant quality, mixing of particles of different sizes at different ratios for pellet preparation etc. on the reduction, swelling behavior of iron ore pellets. These form the subject matter of the thesis. First chapter gives the introduction about the subject. It speaks about the need of DRI industry, scope, present status and future planning of DRI industry in India, world wis.
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 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 Prereduced Iron Ore Pellets: a New Blast Furnace Raw Material by : M. M. Fine
Download or read book Prereduced Iron Ore Pellets: a New Blast Furnace Raw Material written by M. M. Fine and published by . This book was released on 1962 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reduction Behaviour of Iron Ore Pellets by :
Download or read book Reduction Behaviour of Iron Ore Pellets 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 reductants based sponge iron plans 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. 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. In the present project work, an attempt has been made to study the reduction behavior and kinetics of iron ore fired pellets. The effect of different reduction parameters such as temperature (850-1000ðC), time (15-120 minutes.), 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 about 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 gives a general idea of raw materials quality required for producing DRI, especially in Rotary Kiln. The second chapter deals with the literature survey. The third chapter deals with planning of experiments, selection of raw materials, preparation of samples, preparation of iron ore pellets, experimental procedure, evaluation of reduction and activation energies, etc. The results obtained and the discussions made from these observations have been outlined in chapter four. The result for fired iron ore pellets indicated an increase in degree of reduction with increase in reduction temperature (850-1000ðC) and time. The reduction kinetics of Zenith iron ore pellets were st.
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 Pelletization of Fines by : Jaroslav Srb
Download or read book Pelletization of Fines written by Jaroslav Srb and published by Elsevier Publishing Company. This book was released on 1988 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Kinetic Models of Sequential Reduction and Sulfidation Reactions in Iron Ore Pellets by : Patricia Lynn Meyer
Download or read book Kinetic Models of Sequential Reduction and Sulfidation Reactions in Iron Ore Pellets written by Patricia Lynn Meyer and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Pelletized Vs. Natural Iron Technology by : Peter Kakela
Download or read book Pelletized Vs. Natural Iron Technology written by Peter Kakela and published by . This book was released on 1978 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Developing a Thermochemical Model for the Iron Blast Furnace by : Hillary W. St. Clair
Download or read book Developing a Thermochemical Model for the Iron Blast Furnace written by Hillary W. St. Clair and published by . This book was released on 1967 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metallization of Pelletized, Domestic, Iron Oxide Superconcentrates with Lignite and Coal in a Rotary Kiln by : Roy Ernest Peterson
Download or read book Metallization of Pelletized, Domestic, Iron Oxide Superconcentrates with Lignite and Coal in a Rotary Kiln written by Roy Ernest Peterson and published by . This book was released on 1976 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Journal of the Iron and Steel Institute by : Iron and Steel Institute
Download or read book The Journal of the Iron and Steel Institute written by Iron and Steel Institute and published by . This book was released on 1969 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes sect. "A survey of literature on the manufacture and properties of iron and steel, and kindred subjects" (title varies)
