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Reduction Behaviour Of Iron Ore Pellets
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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 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 Study of Reduction Behaviour Of Iron Ore Lumps by :
Download or read book Study of Reduction Behaviour Of Iron Ore Lumps written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies on chemical and physical properties, and reduction behaviour (in coal) of hematite iron ores, procured from ten different mines of Orissa, were undertaken to provide information to the iron and steel industries (sponge iron plants in particular). Majority of the iron ores were found to have high iron and low alumina and silica contents. All these iron ores were free from the deleterious elements (S, P, As, Pb, alkalies, etc.). The results indicated lower values of shatter and abrasion indices, and higher values of tumbler index in all the iron ore lumps except Serazuddin (previous) and Khanda Bandha OMC Ltd. For all the fired iron ore pellets, the degree of reduction in coal was more intense in the first 30 minutes after which it became small. Slow heating led to higher degree of reduction in fired pellets than rapid heating. All the iron ores exhibited more than 90% reduction in their fired pellets in 2 hrs. time interval at a temperature of 9000C. Iron ore lumps showed lower degree of reduction than the corresponding fired pellets.
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 Melting Behaviour of Reduced Iron Ore Pellets and Raceway Adiabatic Flame Temperature Characteristics in the Blast Furnace by : Joel Gustavsson
Download or read book Melting Behaviour of Reduced Iron Ore Pellets and Raceway Adiabatic Flame Temperature Characteristics in the Blast Furnace written by Joel Gustavsson and published by . This book was released on 2001 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 On the Strength and Reducing Behavior of Iron Ore Pellet by : Kazuo Kunii
Download or read book On the Strength and Reducing Behavior of Iron Ore Pellet written by Kazuo Kunii and published by . This book was released on 1973 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Reduction of Iron-ore Pellets. Part 1. Effect of Treatment of Iron-ore Pellets for Porosity Upon Their Reducibility by : A. Ono
Download or read book Study of Reduction of Iron-ore Pellets. Part 1. Effect of Treatment of Iron-ore Pellets for Porosity Upon Their Reducibility written by A. Ono and published by . This book was released on with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Reduction of Iron-ore Pellets. Part 2. Effect of Treatment of Iron-ore Pellets for Porosity Upon Their Strength by : A. Ono
Download or read book A Study of the Reduction of Iron-ore Pellets. Part 2. Effect of Treatment of Iron-ore Pellets for Porosity Upon Their Strength written by A. Ono and published by . This book was released on with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of the Sulfatization-reduction Process for Recovering Manganese and Iron Oxide Pellets by : John J. Henn
Download or read book Evaluation of the Sulfatization-reduction Process for Recovering Manganese and Iron Oxide Pellets written by John J. Henn and published by . This book was released on 1972 with total page 36 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 The Reduction of Iron Ore Pellets Used in the Fastmet Process by : N. Fowkes
Download or read book The Reduction of Iron Ore Pellets Used in the Fastmet Process written by N. Fowkes and published by . This book was released on 1996 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Laboratory and Computer Evaluation of Gaseous Reduction of Iron Ore Pellets by :
Download or read book A Laboratory and Computer Evaluation of Gaseous Reduction of Iron Ore Pellets written by and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Mechanisms of Degradation of Iron Ore Pellets During Reduction by : Tagmour Dorry El-Kasabgy
Download or read book A Study of the Mechanisms of Degradation of Iron Ore Pellets During Reduction written by Tagmour Dorry El-Kasabgy and published by 1978.. This book was released on 1978 with total page 466 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 Experiments on Reduction of Iron Ore Pellets in Coal by : Richard T. Gass
Download or read book Experiments on Reduction of Iron Ore Pellets in Coal written by Richard T. Gass and published by . This book was released on 1982 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Rate Coefficient for Reduction of Iron Ore Pellets in a Packed Bed by : Hillary W. St. Clair
Download or read book Measurement of Rate Coefficient for Reduction of Iron Ore Pellets in a Packed Bed written by Hillary W. St. Clair and published by . This book was released on 1967 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
