Find Us:Zhengzhou, China
Blog
  1. Home >
  2. Blog

Spong iron reations in rootary kiln

Popular products

  • Rotary kiln sponge iron plant pdf995 - Co-production
    Rotary kiln sponge iron plant pdf995 - Co-production

    Jul 02, 2020 rotary kiln sponge iron plant pdf995 download rotary kiln sponge iron plant pdf995 read online in sponge iron plant, r

    Read more +
  • Modelling and optimisation of directreduction of iron ore
    Modelling and optimisation of directreduction of iron ore

    reactions occurring inside the sponge iron rotary kiln. Unlike previous models, detailed kinetics models for coal devolatilization and gasi fi cation are included in the present work

    Read more +
  • Energy survey of the coal based sponge iron industry
    Energy survey of the coal based sponge iron industry

    Sep 01, 2015 In conventional coal based sponge iron plant, Fig. 1, kiln feed (Stream no. 1), which consists of iron ore, feed coal and dolomite, is fed to the rotary kiln (RK).A separate conveyor collects different size fractions of coal (Stream no. 5) for injection into the kiln with the help of pressurized air (Stream no. 4) from discharge end side

    Read more +
  • 2 D Model of Sponge Iron Rotary Kiln Developed Using
    2 D Model of Sponge Iron Rotary Kiln Developed Using

    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 2.4.6. The assumptions for the present work are: (1) 2D geometry of the kiln is considered, (2) Feed Consists mixture of

    Read more +
  • US2754197A - Method and a rotary kiln for the manufacture
    US2754197A - Method and a rotary kiln for the manufacture

    kiln iron air rotary kiln sponge iron Prior art date 1952-09-26 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US311593A Inventor Wienert Fritz Otto Original Assignee

    Read more +
  • sponge iron process
    sponge iron process

    Aug 03, 2011 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

    Read more +
  • Gulam Jeelani Shah - Process Control Engineer - Cement and
    Gulam Jeelani Shah - Process Control Engineer - Cement and

    Sponge Iron Pelletising Company. Areas of particular work include Rotary Kilns, Grinding Mills-Ball Mills, Grate and annular coolar, PH, Cyclones and gas Ducts, Kiln Firing Burners. Closed ckt Mills, ESP and Bag Filters

    Read more +
  • Simulation of Rotary Kiln Used in Sponge Iron Process
    Simulation of Rotary Kiln Used in Sponge Iron Process

    Rotary kiln is cylindrical in shape and is 80m long having 4.2m 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:

    Read more +
  • tunnel kiln iron ore reduction
    tunnel kiln iron ore reduction

    Reduction Reaction In Tunnel Kiln Process For Iron Ore. Reduction Behaviour Of Fired Iron Ore Pellets. 1 coal based rotary kiln process 2 gas based shaft furnace process 3 coalgas based rotary hearth furnace process 4 multiple hearth furnace based routes 5 coal based dr in tunnel kilns 6 fluidised bed processes importance of dr process the dr process of iron making is fast

    Read more +
  • SPONGE IRON | Rashmi Group
    SPONGE IRON | Rashmi Group

    The production process followed at Rashmi Metaliks makes the Sponge Iron unique and superior than its competitors. Iron ore (Red Hematite) is extracted from the mines and taken to the Direct Reduced Iron (DRI) Plant where it is charged with different sizes of Coal (Carbon) by conveyors from different stock houses into the Rotary Kiln

    Read more +
  • Sponge Iron - German TMX
    Sponge Iron - German TMX

    Physical factors like temperature and air volume in the compartment of the Kiln determine the course of the reduction reaction, and is known as the BURWAD reaction. The reactants eventually reduce and sponge iron is extracted by a magnetic separator

    Read more +
  • Sponge Iron Rotary Kiln – Zonelion Taeda Rotary Dryer
    Sponge Iron Rotary Kiln – Zonelion Taeda Rotary Dryer

    Sponge Iron Rotary Kiln is a direct reduction equipment which smelt iron ore into iron directly through solid-phase reduction reaction. It is also called direct reduction process with rotary kiln. Sponge Iron Rotary Kiln is a continuous running cylindrical high-temperature reactor lined with refractory materials inside

    Read more +
  • SPONGE IRON – Lloyd's Metals
    SPONGE IRON – Lloyd's Metals

    Sponge iron making is a process in which iron ore lumps (typically 5mm-18mm size) are tumbled with a ‘select’ grade of iron-coking coal little dolomite inside an inclined rotary kiln and control combusted in the presence of air for about 12 hours before the products are air cooled, magnetically separated, screened and size wise in finished

    Read more +
  • Development of energy conservations scenarios for sponge
    Development of energy conservations scenarios for sponge

    Jan 16, 2011 An appreciable portion of energy is being lost in the rotary kiln through untapped waste gas as has been identified by many investigators (Bandyopadhyay et al. 1987; Elsenheimer and Serbent 1988). 2. Hot sponge iron is being cooled

    Read more +
  • Sponge Iron :: TMT Next - Building The New
    Sponge Iron :: TMT Next - Building The New

    Sponge iron making is a process in which iron ore lumps (typically 5mm-18mm size) are tumbled with a 'select' grade of iron-coking coal little dolomite inside an inclined rotary kiln and control combusted in the presence of air for about 12 hours before the products are air cooled, magnetically separated and screened

    Read more +
  • Energy Audit Methodology of Sponge Iron
    Energy Audit Methodology of Sponge Iron

    Jul 14, 2014 Raw material mix-iron 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 high temp (1050 to 1065˚C ˚C)

    Read more +
  • Sponge Iron - Sambhv Steel
    Sponge Iron - Sambhv Steel

    Sponge iron is a highly processed form of iron ore that contains metallic iron in the range of 83-88% obtained by direct reduction through reaction with carbon in the form of coal at approx. 1100 degree Celsius. Due to high porosity, the resulting iron is called sponge iron. Sponge iron is also referred to as direct reduced iron or metalized iron

    Read more +
  • Modelling and optimization of a rotary kiln direct
    Modelling and optimization of a rotary kiln direct

    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

    Read more +
  • Recovery and utilization of waste heat in a coal based
    Recovery and utilization of waste heat in a coal based

    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 34.5 oC Fe (Mag)=4.166 tph

    Read more +
  • Excellent Sponge Iron Kiln To Deal With Your Sponge Iron
    Excellent Sponge Iron Kiln To Deal With Your Sponge Iron

    Sponge iron kiln’s cylinder: The design of the sponge iron rotary kiln cylinder is more reasonable. The cylinder is rolled with a Q235-B steel plate to ensure five mechanical properties, usually with automatic welding. The wall thickness of the cylinder is generally 25 mm, and that of the firing zone is 32 mm

    Read more +
  • MGM
    MGM

    The second half of Kiln is called reduction zone where major amount of oxygen contained in the iron ore is removed leaving metallic iron (Fe ). The travel time in the reduction zone of the rotary kiln is 6-8 hours. The following chemical reactions take place in different zones of rotary Kiln as given below. CaCO 3 /MgCO 3 = CaO/MgO+CO 2 CO 2 +C

    Read more +
  • New Sponge Iron Rotary Kiln Design In Sponge Iron
    New Sponge Iron Rotary Kiln Design In Sponge Iron

    Sep 10, 2020 Sponge iron is also known as direct reduced iron. Using high-quality ore, using the principle of an oxidation-reduction reaction, in a rotary kiln, shaft kiln, or other reactors, the iron ore undergoes a reduction reaction and becomes porous sponge iron

    Read more +
  • SPONGE IRON PLANT
    SPONGE IRON PLANT

    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 pre-determined ratio. The rotary kiln is slightly inclined at an angle 2.5 deg and rotated by

    Read more +
  • Coal based Direct Reduction Rotary Kiln Process – IspatGuru
    Coal based Direct Reduction Rotary Kiln Process – IspatGuru

    Feb 14, 2017 The iron ore and coal crushed and screened to respective sizes are fed to rotary kiln through feed tube in pre-determined ratio. The rotary kiln is slightly inclined at an angle 2.5 degree and rotated by AC variable speed motor at a variable speed ranging from 0.2 rpm (revolutions per minute) to 1.0 rpm

    Read more +
  • (PDF) Operation of Coal-Based Sponge Iron Rotary
    (PDF) Operation of Coal-Based Sponge Iron Rotary

    Data-1 includes temperatures profiles and air inlet at positions, AT-1 to AT-3 and MF-1 and MF-2, inside the kiln whereas, flow rates of iron ore, feed coal, slinger coal and sponge iron is

    Read more +
  • SPONGE-IRON - Shakambhari Group
    SPONGE-IRON - Shakambhari Group

    Sponge Iron, also known as Direct Reduced Iron is produced from Hematite Iron ore (5 to 18 mm size) by removing the oxygen by direct reduction process using non coking coal as the fuel and reducing agent in Rotary Kiln. Sponge iron is rich in Metallic Iron (Pure Iron) with consistent chemical & physical characteristics

    Read more +
  • Sponge Iron - an overview | ScienceDirect Topics
    Sponge Iron - an overview | ScienceDirect Topics

    Iron oxide ores extracted from the Earth are allowed to absorb carbon by a reduction process. In this natural reduction reaction, as the iron ore is heated with carbon, it results in a pop-marked surface, hence the name “sponge iron.” The commercial process is a solid solution reduction, also called direct-reduced iron (DRI). In this process, the iron ore lumps, pellets, or fines are

    Read more +
  • OPERATIONAL ASPECTS OF SPONGE IRON
    OPERATIONAL ASPECTS OF SPONGE IRON

    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 iron

    Read more +
  • Direct Reduction Process - an overview
    Direct Reduction Process - an overview

    The basis of the direct reduction process is that solid sponge iron is produced by removing oxygen from the ore in a shaft furnace, rotary kiln furnace or fluidised bed. Sponge iron can be produced in the form of Direct Reduced Iron (DRI), Hot Briquetted Iron (HBI) and Cold Briquetted Iron (CBI); also Low Reduced Iron (LRI), which is pre

    Read more +

Latest Blog