sponge iron making process rotary kiln pdf

The kiln model applied in this work was developed by Hatch over a number of years and has been used for several rotary kiln projects. It has its roots in a FORTRAN program that was developed by Venkateswaran 1978 to study the reduction of iron ore. The original software was used to model the operation of a 35 m pilot kiln at the Stellco company

A 39read39 is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.

Sponge iron being magnetic gets attracted and gets separated from non magnetic char. The iron ore and coal crushed and screened to respective sizes are fed to rotary kiln through feed tube in predetermined ratio. The rotary kiln is slightly inclined at an angle 2.5 deg and rotated by

In general sized iron ore of 518mm is used in the process of manufacture of sponge iron on all types of rotary kiln with 16mm not exceeding 1520.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.

Sponge Iron Composition Manufacturing Process Lloy. Sponge iron making is a process in which iron ore lumps typically 5mm18mm size are tumbled with a selectgrade of ironcoking coal little dolomite inside an inclined rotary kiln and control busted in the presence of air for about 12 hours before the products are air cooled, magnetically separated, screened and size wise in finished product

Simulation of Rotary Kiln Used in Sponge Iron Process Using ANN IACSIT International Journal of Engineering and Technology, Vol. 6, No. 2, April 2014 DOI 10.7763IJET.2014.V6.673 95 AbstractIn the present study, estimation of actual output parameters is carried out for a sponge iron production process

DRI is also known as sponge iron, it is a solidstate direct reduction process Fig. 2.6. Coal, dolomite and iron ore or pellets are fed into one end of a rotary kiln, while sponge iron and char are withdrawn from the other end. Primary and secondary airs are supplied to the kiln to initiate combustion and reaction processes Choudhury, 2014

Boudouard reaction, dolomite, DRI, Iron ore, metallization, non coking coal, pellets, reduction, Rotary kiln, Sponge iron, Sulphur, Coal based Direct Reduction Rotary Kiln Process . The coal based direct reduction rotary kiln process was developed for converting iron ore directly into metallic iron without the melting of the materials.

The process of sponge iron making aims to remove the oxygen from iron ore. The quality of sponge iron is primarily ascertained by the percentage of metallization removal of oxygen, which is the ratio of metallic iron to the total iron present in the product. For the direct reduction of iron ore the main furnace used is rotary kiln. The

Sponge Iron Coal Based In Tunnel Kiln Grinding Mill China. Rotary Kiln Process Of Making Sponge Iron Grinding Mill coal used in rotary kiln sponge iron The process of sponge iron making aims to remove the oxygen from iron ore gangue content In Sponge Iron Process two types of coal are being used such as feed For the direct reduction of iron ore the main furnace used is rotary kiln

However, Rotary kiln process suffers from serious limitations like low productivity and pollution. In this respect fixed bed Tunnel kiln furnace are evolving as an alternative to Rotary kiln process. Iron ore fines and the low grade beneficiated iron ore cake are directly used for manufacturing of sponge iron in tunnel kilns.

What is DIRECTLYREDUCED IRON What does DIRECTLYREDUCED IRON mean DIRECTLY REDUCED IRON meaning Duration 619. The Audiopedia 6,400 views

Consequently, they were replaced by the high production rate indirect process, and the development of modern DR Process did not begin until the middle of 19th century. Perhaps the very first patent in U.K. for sponge iron making was in 1792 presumably using a rotary kiln. More than 100 DR processes have been invented and operated since 1920.

Operational Guidance And Control Of Sponge Iron Rotary Kilns At TATA Sponge, Soft Computi ng for Problem Solving , SocProS 2017, Advances in intelligent sy stems and computing 816 , Ed. J

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 8001200 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

Sponge iron making process 1. ALBERTUS SEPTYANTOKO 2712100014 2. IRON ORE Iron 6567 SiO2 Al2O3 23 CaO MgO 0,51 Sulphur 0,02 max Phosphorus 0,04 max Chemical Composition Size 518 mm Shatter Index 95 Tumbler index 88 Reducibility Index 94 Thermal Degradation Index 5 Physical Composition

3.3 Schematic of optimised Rotary kiln sponge iron making process 21 4.1 Industrial view of Sponge Iron making Rotary Kiln 24 4.2 Schematic view of internal heat exchange in Rotary kiln 26 4.3 Schematic view of Lobe Blower. 27 4.4 Schematic view of Air amp material flow in Rotary kiln 27 4.5 Filling of Bed Geometry 28

6. The product i.e. Sponge Iron and semi burnt coal are discharged from the kiln through a rotary cooler. The cooler is 12M in length and water is sprayed directly as well as indirectly for cooling the material. The material is cooled down to 100oC and fed to magnetic separator for separating the sponge iron and nonmagnetic char. The Sponge

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 desulphurizing agents limestone or raw dolomite into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge