T D Spange Iron Rotary Kiln Pdf

Modeling of rotary kiln for sponge iron processing using cfd package ansys 130 a thesis submitted for partial fulfillment of the degree award of master of technology in chemical engineering under the supervision of

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

Nov 09 2014 making process iron ore to sponge iron sponge iron making process 13818 views share like rotary kiln 9 rotary kiln 10 rotary cooler the product come to the water cooled where its temperature reaches to 80100 c 11 rotary cooler the product is conveyed to the product separation and storage building the product is sponge iron and

Sponge iron kiln main structure sponge iron kilns kiln head steal sponge iron kiln adopts kiln shell gas seal and spring steel sheet doublelayer flexible sealing device the cold air enters the cooling shield through the bell mouth and is exhausted after being heated

Raw material mixiron ore dolomite and coal are fed to one end of rotary kiln and product sponge iron along with char is taken out from the other end apart from this primary and secondary airs are supplied to the kiln to initiate the combustion and reaction processes the reaction takes place at

Rotary kiln is cylindrical in shape and is 80m long having 42m internal diameter this is the reactor of the process where reduction as well as combustion reactions are carried out the role of kiln is to convert the raw material iron ore coal and dolomite into the sponge iron 8 detail reaction mechanism of the process is discussed below

Dri is also known as sponge iron it is a solidstate direct reduction process fig 26 coal dolomite and iron ore or pellets are fed into one end of a rotary kiln while sponge iron and char are withdrawn from the other end primary and secondary airs are supplied to the kiln to initiate combustion and reaction processes choudhury 2014

This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is directly reduced in the solidstate using either natural gas or noncoking 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

The present work identifies the basic features of burden movement in a rotary kiln the cold model study was conducted with iron ore as the feed material to determine the influence of length to diameter ratio ld of a rotary kiln on the filling degree holdup and residence time of the charge an empirical equation correlating different operating variables has been derived on the basis of

Rotary kiln operations regardless of rotary kiln size or configuration the basic principles outlined in this manual govern the reliable operation of every rotary kiln calciner dryer incinerator digester and cooler application for questions or problems with your specific application please contact north american kiln

33 schematic of optimised rotary kiln sponge iron making process 21 41 industrial view of sponge iron making rotary kiln 24 42 schematic view of internal heat exchange in rotary kiln 26 43 schematic view of lobe blower 27 44 schematic view of air material flow in rotary kiln

Reduction of ilmenite sand in tunnel kiln tunnel kiln process sponge iron crusher 201925 tunnel kiln process for sponge iron making process making sponge iron rotary kiln get the price of machineshttp quartz crusher contact more details crusher wikipedia a crusher is a machine designed to reduce large rocks into smaller rocks gravel or rock dust

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

Fig 1 schematic of the rotary kiln of sponge iron process table 1 reaction temperature and its heat of reaction 11 iii cfd model boundary operating conditions the 2 d geometry of rotary kiln is developed using gambit 246 the assumptions for the present work are 1 2d geometry of the kiln is considered 2 feed consists mixture of

Rotary kiln 1050 c kiln air at 30 c flue gas fly ash fines of iron ore at 900 oc kiln feeding iron ore feed coal dolomite all at 30 c rotary cooler sponge iron magnetic at 110 oc water at 30 oc dsc 900 c 1020 c dust abc air whrb waste gas water esp dust wet scraper waste gas dusty gas chimney steam water at 345 oc fe mag4166 tph

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

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

Nov 09 2014 making process iron ore to sponge iron sponge iron making process 13818 views share like rotary kiln 9 rotary kiln 10 rotary cooler the product come to the water cooled where its temperature reaches to 80100 c 11 rotary cooler the product is conveyed to the product separation and storage building the product is sponge iron and

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

Borah et al quality prediction and control in coalfired rotary spongeiron kilns at tata sponge un published work paper to ap pear in proceedings of the curre nt a istech 2019 8

The present work identifies the basic features of burden movement in a rotary kiln the cold model study was conducted with iron ore as the feed material to determine the influence of length to diameter ratio ld of a rotary kiln on the filling degree holdup and residence time of the charge an empirical equation correlating different operating variables has been derived on the basis of