manufacturing process of sponge iron seminar ppt

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DRI, also known as sponge iron, is the product of reducing iron oxide in the form of iron ore and steel plant wastes into metallic iron, below the melting point of iron and typically in the range of 800–1200 °C. Iron oxide is charged into shaft furnace, rotary kiln, or fluidized beds in the form of pellet, iron ore lumps, or fines. The reduction takes place using gaseous reductants (CO + H ...

This causes reduction of iron ore and the iron in the ore and sinter is melted out to form a pool of molten metal in the bottom, or hearth, of the furnace. The limestone combines with impurities and molten rock from the iron ore and sinter, forming a liquid 'slag' which, being lighter than the metal, floats on top of it.

Sponge iron is a spongy mass of iron which is a metallic product produced through direct reduction of iron ore/ iron pellet in the solid state. It is a substitute for scrap and is mainly used in making steel through the secondary route. The process of sponge iron making aims to remove the oxygen from iron …

Nov 09, 2014· Sponge iron making process 1. ALBERTUS SEPTYANTOKO 2712100014 2. IRON ORE • Iron = 65-67 % • SiO2 + Al2O3 = 2-3 % • CaO + MgO = 0,5-1 % • Sulphur = 0,02 % max • Phosphorus = 0,04 % max Chemical Composition • Size = 5-18 mm • Shatter Index = +95 % • Tumbler index = +88 % • Reducibility Index = +94 % • Thermal Degradation Index = 5 % Physical Composition

Classification of Metal Removal Processes and Machine tools. Introduction to Manufacturing and Machining; Basic working principle, configuration, specification and classification of machine tools

116364638 Iron and Steel Manufacturing Process Ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. iron nd steel

1. Krupp Sponge Iron Process The Krupp. Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge ...

Maurice I. Stewart Jr. PhD, PE, in Surface Production Operations (Third Edition), Volume 2, 2014. 9.4.2.1 Application. The iron sponge process is economically applied to gases containing small amounts of H 2 S (< 300 ppm) operating at low to moderate pressures in the range of 50-500 psig (344.7-3447 kPa). This process does not remove CO 2.

Sponge iron is the product created when iron ore is reduced to metallic iron, in the presence of coal, at temperatures below the melting point of iron. The external shape of the ore is retained with 30% reduction in weight due to oxide reduction resulting in change in …

The major Raw Materials required for production of Sponge Iron by the rotary kiln process are: sized graded Iron Ore and Non-Coking coal. Limestone, in small quantities, is also required to scavenge the sulphur. IRON ORE The quality requirement of Sized ore for sponge iron production …

iron and steel manufacturing process.ppt. iron and steel manufacturing process.ppt - Free download as Powerpoint Presentation (. ppt), PDF File (.pdf), Text file (.txt) or view presentation This technique produces 97.0 percent pure iron, which is called, solid Sponge Iron.

Direct reduction Scrap Ladle (Refining) Electric arc furnace (Steelmaking) Iron Ore Pellets Electric Arc Furnace Steelmaking Continuous casting Design by Blisscommunication.com / Cover photo: ThyssenKrupp Steel / Tubes photo: Salzgitter The process shown above is illustrative only and is not designed to show the steelmaking process in detail.

Sponge iron is a highly processed form of iron ore which contains metallic iron in the range of 83-88% obtained by direct reduction without melting it. Due to high porosity, the resulting iron is called sponge iron. It is used as a raw material for manufacturing steel through electrical arc …

million tons of steel by 2020. The requirement of Sponge Iron as metallic will be 30 million tons. Projection for metallic requirement in Year 2010-11 we require Melting Scrap 14 million and DRI 18 million But availability of scrap is not likely to reach 11 million. So there is a huge requirement of sponge iron production.

Sponge iron is a type of iron produced by coal based or gas-based reduction of iron ore. It is difficult to measure and control the degree of reduction or quality of the iron ore at intermediate ...

Our produced ramming mass mineral is utilized in conversion appliances like Induction Furnaces for rolling out stainless steel and other products from sponge iron, cast iron and scrap iron. Ramming mass is a naturally formed electrostatic volcanic material.

The process of sponge iron manufacturing involves removal of oxygen from iron ore. When that happens, the departing oxygen causes micro pores in the ore body, turning it porous. When the eventual product is observed under a microscope, it resembles a honeycomb structure, which looks spongy in texture. Hence the name sponge iron.

1. Characteristics of reduced iron The MIDREX process produces direct reduced iron (hereinafter referred to as DRI ). The process reduces iron ore using a reforming gas made from natural gas. The DRI is used mainly as the raw material for electric arc furnaces (EAFs), as a clean iron source substitute for scrap iron.

Mar 16, 2013· DR process, DRI, HBI, Iron making. Metallization, reformed natural gas, residual elements, Rotary kiln, Direct Reduced Iron and its Production Processes. Direct reduced iron (DRI) is the product which is produced by the direct reduction of iron ore or other iron bearing materials in the solid state by using non-coking coal or natural gas.

Nov 02, 2017· Right from the selection of high grade iron ore and coal, we use only the finest raw material for production. Sponge Iron (DRI) is the main constituent in pr...

2D CFD model of rotary kiln of sponge iron process is developed to study the effects of angle of inclination, number of rotation and mass flow rate of iron ore on output parameters.

Midrex is an innovative ironmaking process, developed for the production of direct-reduced iron (DRI) from iron ores and primarily natural gas. You want to k...

Nov 17, 2012· Pollution from the sponge iron industries is the core reason whycommunities rise in arms against this industry. 26 27. Various CSE Reports of 2008 inform us1. In Odisha, women from the Bonai Vana Suraksha Committee marched up to the District Collector with samples of soil, water and grain to protest against sponge iron plants.2.

This presentation may include statements, which may constitute forward-looking statements. All statements that address expectations or projections ... increased costs of production owing to increased costs for iron ore and thermal coal Few large steel makers are adding long capacities . Jindal Steel & Power Limited 10 616 2,944 2,384 5,736 6,452