Menu
Since DRI is produced by removing oxygen from iron ore its structure is just like sponge with a network of connecting pores These pores results in a large internal surface area which is about 10 000 times greater than the internal surface area of solid iron Due to this DRI is also known as Sponge Iron
Get Price
SKM Rotary Kiln Sponge Iron Plant Pdf Rotary Kiln Process of Making Sponge Iron C 10 // Advances in Rotary Kiln Sponge Iron Plant A typical process scheme for making sponge iron in a rotary kiln is presented in Fig While Fig shows only the key steps a more detailed scheme as it would appear for a typical operating plant is
Get Price
This is brought about by the use of a coal fired Rotary Kiln with the environmental impact of the entire process putting Sponge Iron plants under Red Category industries These industries
Get Price
sponge iron making process leskamiscasesfr Kiln Process For Sponge Iron Making sponge iron process The carbon content in sponge iron produced by coal based rotay kiln processes are generally low and is in the range og to carbon content in gas based processes can be controllrd to a level of to based on requirement for
Get Price
As is shown in FIG 1 iron ore 2 is charged to a rotary kiln 1 and reduced therein to sponge iron In a separating stage 4 the solids 3 discharged from the rotary kiln 1 are separated into sponge iron 5 and surplus carbonaceous solids One part 6a of said carbonaceous solids is supplied to the electric reducing furnace 7 and the other part 6b
Get Price
During the process of manufacture of sponge iron coal injection plays a very vital role in maintaining the product quality Due to highly endothermic nature of Boudouard reaction heat has to be continuously supplied in entire reduction zone of rotary kiln Generally the length of reduction zone is 60 70% of total kiln length
Get Price
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 for assistance Kiln Tyre and Support Roller Assembly For All type Dryers Rotary Kiln Support
Get Price
leaving the rotary kiln and prehardened to a compressive strength of at least 10 kgf/pellet This strength is necessary for subsequent treat ment in the rotary kiln Experience with different raw materials In the past a number of different ores and fuels have been tested for their amenability to treatment by the KRUPP Sponge Iron Process
Get Price
Jul 29 2024· In general sized iron ore of 5 18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with 16mm not exceeding 15 20% 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
Get Price
Rotary kiln is a rotating cylindrical vessel which is used for drying calcination and sintering in a continuous process with The hot gases may be generated in an external furnace or by a flame inside the kiln Widely used for cement pet coke calcination sponge iron and other materials it uses hot gases for the operation
Get Price
China Sponge Iron Rotary Kiln Rotary Kiln Process of Making Sponge Iron Find details about China Lime Rotary Kiln Cement Rotary Kiln from Sponge Iron Rotary Kiln Rotary Kiln Process of Making Sponge Iron Luoyang Zhongtai Industries Co Ltd
Get Price
Sep 10 2020During the sponge iron manufacturing process hot air enters through the air tube and air nozzle of the sponge iron kiln providing heat for the reaction The mixture first enters the preheating zone of the sponge iron rotary kiln and is heated to the reaction temperature
Get Price
Coal Based Rotary Kiln for Direct Reduced Iron / Sponge Iron 100 TPD 350 TPD and 500 TPD Solid state reduction of Iron Ore using either coal/gas as a medium of reduction to produce a substitute raw material for steel making is termed as Direct Reduced Iron DRI Since DRI is produced by removing oxygen from iron ore its structure is just
Get Price
The rotary kiln direct reduction method is that the raw materials are in the rotary kiln and the iron oxides are reduced to metallic iron under the conditions of no melting and no slag formation The direct reduced iron DRI is commonly known as sponge iron because its structure is sponge and its bulk density is less than /mm3
Get Price
PDF On Aug 20 2024 Indra Chakraborty published Accretion Build Up Resistant Refractories for Sponge Iron Kilns IREFCON 06 Find read and cite all the research you need on ResearchGate
Get Price
Iron ore is added from the top of the shaft furnace and moves from top to bottom The reducing gas and iron ore undergo a chemical reaction in reverse motion to produce sponge iron Among them the chemical reactions that take place are 3CO Fe2O 3 = 2Fe 3CO 2 3H2 Fe2O 3 = 2Fe 3H2O Process for Producing Sponge Iron in Tunnel Kiln
Get Price
ROTARY COOLER The product is conveyed to the product separation and storage building The product is Sponge iron and char Place that spraying a controlled amount of water directly into hot solids and by spraying additional water outside the cooler shell 12 SCREENING 10 mm 3 10 mm 3 mm 13
Get Price
Schematic of optimised Rotary kiln sponge iron making process Iron Ore and Non Coking Coal along with Dolomite are fed continuously to the charge end of Rotary Kiln which is inclined at of drum length Coal is also injected through a Coal Throw Pipe at the discharge end of Kiln Due to the inclination and rotation of Kiln the charge
Get Price
Process of making Sponge Iron Sponge Iron production using coal involves reducing iron ore with coal or lignite The reduction is carried out in a Rotary Kiln at a pre determined temperature and controlled atmosphere The input raw material iron ore coal and limestone in the required calibrated sizes are fed into the rotary kiln which is
Get Price
The major function of a rotary kiln is to calcinate various materials in a very high temperature environment During the calcination process the raw material turns into the desired end products via a series of physical and chemical reactions Rotary kiln is not a whole block It is combined with different parts
Get Price
01 Description of Rotary Kiln Rotary Kiln refers to rotating calcination kiln belongs to construction material equipment According to different materials rotary kiln can be divided into cement kiln metallurgy chemical kiln and lime kiln The cement kiln is used for makeing cement clinker and there are dry and wet methods to make cement
Get Price
2 Rotary Kiln Process of Making Sponge Iron CHAPTER HISTORICAL BACKGROUND process concepts have been emerging in this The production of steel began in ancient area there were rapid births and deaths of times but because of the complexity and slow these processes and process concepts in the speed of the ancient process they could not middle of the twentieth century But those be carried
Get Price
Sponge iron production by Rotary Kiln Introduction … Various rotary kiln processes for production of sponge iron are 1 SL/RN process 2
Get Price
In the sponge iron process concentrated and finely divided iron ore is reduced in solid phase into sponge iron at high temperatures in rotary kiln The process is very energy demanding
Get Price
coal based lurgi dri process flow chart the most popular process adopted by coal based sponge iron plants is sl rn … the castables installed in a rotary kiln … 187 more detailed sponge iron process flow chart of sl/rn process has been shown in fig iron ore and non coking … 1985 various tests on materials to be used for coal
Get Price
Brief on the sponge Iron process In coal based process of making sponge iron non coking coal is used as reducing agent along with lumpy rich grade iron ore and the reduction is carried out in an inclined horizontal rotary kiln which rotates at a predetermined speed A temperature profile ranging from 800 to 1050 deg centigrade is
Get Price
The main raw materials for the production of DRI by the rotary kiln process are i sized graded iron ore or iron ore pellets ii non coking coal and iii dolomite in small quantities to scavenge the sulphur Iron ore of the right quality is the basic input for the coal based direct reduction process
Get Price
Also the process conditions in a sponge iron rotary kiln are dynamic in nature Hence the quality keeps fluctuating and is not a constant value A mathematical mass Hence the quality keeps
Get Price
The sponge iron is produced in the form of lumps as well as fines The production of sponge iron depends on metallization of iron ore Fig 1 Schematic of rotary kiln For the present work data of a typical industry of 527 T/day production capacity is collected for 25 days The data of temperature T 1 to T 12 AT 1 to AT 3 and MF 1 and
Get Price
Pdf Modeling Of Rotary Kiln For Sponge Iron Processing companies like jspl and Ms heg ltd sale the surplus amount energy to state electric board fig 33 schematic of optimised rotary kiln sponge iron making process iron ore and non coking coal along with dolomite are fed continuously to the charge end of rotary kiln
Get Price