sintering iron narayanan

  • US7875097B2

    A raw material for sintering of in total is blended so as to adjust iron-containing dust and/or sludge to 60% or more, and coarse grains having a grain size of 2 mm or larger to 20% or more on the weight basis, one-third or less of the total amount of addition of coke breeze is added as a fuel, the blend is kneaded and granulated using a vibration kneading granulator to thereby produce ...

  • Evaluation of Deformation and Densification Behavior in ...

    A. Narayanan R. Kannan1,* K.S. Pandey2 S. Shanmugam3 ... behaviour of sintered iron-carbon-molybdenum powder metallurgy steel system under the influence of two different heights – to – diameter ratio, namely 0.40 and 0.75 ... include loose powder sintering, liquid phase sintering,

  • Abstract: Performance of Rechargeable Sintered Iron ...

     · The iron electrode in this study was prepared by sintering of carbonyl iron onto nickel mesh in an inert atmosphere. The iron electrode was then subjected to repeated charge-discharge cycling in 30% w/v KOH electrolyte in a three-electrode configuration with two sintered nickel-oxide counter electrodes and a mercury/mercuric oxide reference ...

  • SINTERING OF EGYPTIAN IRON ORE

    92 Rasuh et al. [5] found that as a return content in raw mix is increased, strength of sinter produced is increased. Shalabi et al. [4] indicated that the optimum ignition time of Baharia iron ore sinter is =3 min at which the productivity at blast furnace yard is higher. Lysenko et al. [6] found that the vertical sintering speed varied extremely with incre-

  • Formation and Reduction of NO from the Combustion of the ...

     · Iron and steel companies account for more than 10% of global emissions of NO. The iron ore sintering process represents more than 40% of the total emission of NO. At present, there is no economical and effective method of inhibiting NO emissions from sintering flue gas. Therefore, controlling the conditions of fuel combustion is highly required for the reduction of NO.

  • Thermodynamic Modelling of Iron Ore Sintering Reactions

    minerals Article Thermodynamic Modelling of Iron Ore Sintering Reactions Chunlin Chen 1,*, Lu 1 and Kexin Jiao 2 1 CSIRO Mineral Resources, Clayton, VIC 3168, Australia; [email protected] 2 School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; [email protected] * Correspondence: Chunlin [email protected] ; Tel.: +61-3 ...

  • Preparation and Characterization of Phosphate-sludge ...

    The presence of iron oxides in kaolin lowers the sintering temperature of up to 50°C (Nana et al., 2013) and resulted in solidified phase of mullite and cristobalite (Little et al., 2008). It was also found that mullite crystal in lath-like and needle-like shape occurred in samples containing iron oxide (Guo, 2010) .

  • Sintering of Iron Ore Fines, and Raw Materials for Bhilai ...

    By G P Mathur, G V Subramanya and P I A Narayanan. Get PDF (5 ) Abstract. A detailed study has been made at the National Metall-urgical Laboratory on the sintering charactersitics of the iron-ores of Rajharapahar. Madhya Pradesh, and other raw materials likely to be used in the Bhilai steel plant. The effects of variables such as coke and ...

  • Sintering: A Step Between Mining Iron Ore and Steelmaking

     · Sintering: A Step Between Mining Iron Ore and Steelmaking. The USGS defines iron ore as a mineral substance which, when heated in the presence of a reductant, will yield metallic iron (Fe). It almost always consists of iron oxides, the primary forms of which are magnetite (Fe3O4) and hematite (Fe2O3). It''s a major ingredient in steel.

  • Abstract: Properties of Nickel-Iron Batteries with High ...

     · Commercial nickel-iron batteries, however, only have a specific energy of 22-25 Wh/kg [3]. These commercial nickel-iron batteries use heavy electrode constructions with 40-year old pocket plate electrode technology. Further, the iron electrodes in these batteries use excessive mass of iron materials to address the issue of low charging efficiency.

  • Sintering Hematite Iron Ore

     · Table of ContentsCharacteristic Data of Ores and AdditiveCharacteristic Data of the ExperimentsSinter OutputPhysical Quality and Structure The authors investigate the influence of the basicity index CaO/SiO2 on the sintering properties of hematite ore mixtures. The experimentation was performed with three different mixtures of ores from Tazadit, Nimba, Mano-River, Itabira, Marcona, …

  • Reduction and Degradation Behaviour of Sinter under ...

    The low temperature degradation, mainly of sinter, results in generation of fines, which affect gas permeability in the stack region. A severe reduction degradation of sinter hampers permeability causing imbalance in reduction degree in the radial and circumferential direction and disturbs the furnace heat level-all detrimental to stability of ...

  • IS 6495 (1984): Method of Tumbler Test for Iron Oxides ...

    4.2.1 1rofl Ore Lump and Sinter - The reduced sample shall be sufficient to obtain at least 100 kg of sinter or sized iron ore that will pass a 40 mm sieve and be retained on a 10 mm sieve. The reduced sample shall be separated into three fractions by screening through 25 mm, 16 mm and 10 mm sieves.

  • A new approach to sintering and boriding of steels "Boro ...

     · XRD analysis of sintered and boro-sintered samples after cold pressing under 2500 Psi pressure is given in Fig. 6. It was observed that only α-Fe iron phase formed in the sintered sample in Al 2 O 3 medium. α-Fe phase was observed in all boro-sintered samples for 2, 4 and 6 h. However, the peak intensity of this phase decreased with ...

  • Beneficiation, sintering, and processing of raw materials ...

    Beneficiation, sintering, and processing of raw materials for the iron and steel industry P. L A. NARAYANAN, G. V. SUBRAMANYA, and G. P. MATHUR BENEFICIATION OF IRON ORES BENEFICIATION of iron ores relates not only to enrichment of the metal content but also to improvements in phy-_ sical characteristics of the ore charged into the blast-furnace.

  • Partial substitution of anthracite for coke breeze in iron ...

     · In the sintering of iron ores, the partial substitution of anthracite for coke breeze has been considered to be an effective way of reducing pollutant emissions and production cost. In this study ...

  • Sinter plant

    Sinter plants agglomerate iron ore fines (dust) with other fine materials at high temperature, to create a product that can be used in a blast furnace.The final product, a sinter, is a small, irregular nodule of iron mixed with small amounts of other minerals. The process, called sintering, causes the constituent materials to fuse to make a single porous mass with little change in the chemical ...

  • Thermally Modified Iron-Inserted Calcium Phosphate for ...

     · Surface charge changes from +10 mV to −11 mV upon sintering because of the diffusion of iron in the HAp lattice. The saturation magnetization has been achieved by sintering the nanoparticles at 400 and 600 °C, which has led to the specific absorption rate of 12.2 and 37.2 W/g, respectively.

  • Sintering ofiron Ore Fines, and Raw Materials for Bhilai ...

    NARAYANAN A detailed study has been made at the National Metallurgical Laboratory on the sintering charac-teristics of the iron-ores of Rajharapahar, Madhya Pradesh, and other raw materials likely to be used the Bhilai steel plant. The effects of variables such as coke and moisture contents in sinter mix,

  • What Is Iron Ore Sintering? (with pictures)

    Sandi Johnson Sintering treats raw iron ore formations before extraction. Iron ore sintering is a type of powder metallurgy used to pre-treat iron before using it in manufacturing applications. Sintering involves heating iron powder to partially, but not completely, melt the iron particles. The exact process used and additional elements involved vary, with some methods using gas or electricity ...

  • Design And Fabrication Of Iron Ore Sintering Machine

     · Gas Fired Sintering Machine 3.5.1 Dwight – Lloyed Sintering Machine: of iron ore fines is now universally carried out on travelling machine running on a continuous basis. In 1958 large machine in operation was 3.7m in width, 223 m2 area, production 800t/day. Rigt now, the largest machine are use in japan and is nearly 8m width, 500m2 ...

  • SINTERING AND PELLETISATION OF INDIAN IRON ORES

    8 mm. HPS feed consists of iron ore as pellet feed fines, return fines and iron and steel work remnants, filter dust, additives and binders like limestone, dolomite, bentonite and coal dust. These micro pellets are fed onto a sinter machine to produce sinter cake, which is …

  • Publications > narayan Group > USC Dana and David Dornsife ...

    Chenguang Yang, Aswin K. Manohar and S. R. Narayanan*, "A High-Performance Sintered Iron Electrode for Rechargeable Alkaline Batteries to Enable Large-Scale Energy Storage", J. Electrochem. Soc., 164 (2017) A418-A429.

  • Iron Ore to Sintering to Steelmaking

     · Sinter is the primary feed material for making iron and steel in a blast furnace. We recently wrote about sintering in our sister blog, Advancing Mining . Read the article to learn more about how sinter quality begins with the mined iron ore and the …

  • Investigations on microstructural and microhardness ...

    Investigations on microstructural and microhardness developments in sintered iron–coal fly ash composites AMARJIT SINGH1, JARNAIL SINGH1, MANOJ KUMAR SINHA2, RAVI KUMAR1 and VIKRAM VERMA1,* 1Department of Material Science and Engineering, National Institute of Technology, Hamirpur 177005, India 2Department of Mechanical Engineering, National Institute of Technology, …

  • sintering of iron ore fines in steel plant

    The Sintering Process of Iron Ore Fines – IspatGuru. 09/03/2013· Sintering is a thermal process (carried out at 1300 deg C to 1400 deg C) by which a mixture of iron ore, return fines, recycled products of the steel plant industry (such as mill scale, blast furnace dusts, etc), slag forming elements, fluxes and coke fines are agglomerated in a sinter plant with the purpose of manufacturing a ...

  • Nickel-Iron Batteries > narayan Group > USC Dana and David ...

    Chenguang Yang, Aswin K. Manohar and S. R. Narayanan*, "A High-Performance Sintered Iron Electrode for Rechargeable Alkaline Batteries to Enable Large-Scale Energy Storage", J. Electrochem.Soc., 164 (2017) A418-A429.; Aswin K. Manohar, Chenguang Yang, S. R. Narayanan, "The role of sulfide additives in achieving long cycle life rechargeable iron electrodes in alkaline batteries", …

  • Development of a processing map for safe flash sintering ...

     · The current limit determines the extent of sintering. 50 Thus, the flash sintering process has the following characteristics: (a) nonlinear rise in the conductivity, 36, 39 (b) bright light emission, 51-53 and (c) rapid densification. 54, 55 Furthermore, the Debye temperature is currently seen as a lower bound temperature for the onset of flash ...

  • A. Narayanan R. Kannan

    Workability studies in forming of sintered iron-0.35% carbon powder metallurgy preform during cold upsetting. Journal of Iron and Steel Research International 2011; 18(12), pp.80-87. Narayan S, Rajeshkannan A. Strain hardening behaviour in forming of sintered iron-0.35% carbon powder metallurgy preform during cold upsetting.

  • A High-Performance Sintered Iron Electrode for ...

     · @article{osti_1422401, title = {A High-Performance Sintered Iron Electrode for Rechargeable Alkaline Batteries to Enable Large-Scale Energy Storage}, author = {Yang, Chenguang and Manohar, Aswin K. and Narayanan, S. R.}, abstractNote = {Iron-based alkaline rechargeable batteries such as iron-air and nickel-iron batteries are particularly attractive for large-scale energy …

  • The Influence of Iron Ore Quality Degradation on the ...

    The sinter production is affected by many factors, including total iron content, gangue content and burning loss. These paper analyses changes of three kinds of Australian iron ores in recent ten years, and then draw a conclusion that the assimilability of these three kinds of Australian iron ores are increased. These kinds of changes cause a lot of influence upon sinter production, which ...

  • Direct laser sintering of iron–graphite powder mixture ...

    Abstract In the present work, the role of graphite addition on the laser sintering of iron powder was studied. Powder mixtures containing iron and 0.4, 0.8, 1.2, and 1.6 wt.% graphite were prepared by blending elemental powders. These powders were sintered layer-by-layer under nitrogen atmosphere using a continuous wave CO 2 laser beam. A laser power of 70–225 W, scan rate of 50–600 mm s ...

  • Review Effects of Alumina on Sintering Performance of ...

    Iron ore sinter, constituting a major proportion of blast furnace burden in most countries, particularly in the Asia-Pacific region, is therefore expected to have a significant impact on blast furnace per-formance. The chemical composition of iron ore fines, together with the thermal conditions that sinter …

  • Sintering

    Sintering or frittage is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction.. Sintering happens naturally in mineral deposits or as part of a manufacturing process used with metals, ceramics, plastics, and other materials.The atoms in the materials diffuse across the boundaries of the particles, fusing the ...

  • Sintered NdFeB Magnets – HGT Advanced Magnets Co.,Ltd

    Physical Property. Sintered NdFeB magnets, i.e. sintered neodymium iron boron magnets, are those permanent magnetic materials that based on a Nd-Fe-B tetragonal crystal structure, and they are manufactured through a powder metallurgy (PM) process. They contain three basic elements neodymium, iron and boron.

  • Microstructure of Composites Based on Phosphated Iron ...

    The commercial carbonyl iron powder coated with iron phosphate (20 wt.%) was dried (60°C for 2 h in air), calcinated at 400°C for 3 h in air, compacted at 600 MPa into cylindrical samples and subsequently sintered at 820, 900 and 1110°C for 30 min in N2-10%H2 atmosphere. By means of EDX and XRD analyses the phase composition of the coating and sintered microstructure was studied.

  • Sintering ofiron Ore Fines, and Raw Materials for Bhilai ...

    What Is Iron Ore Sintering? (with pictures)

  • Sinter Quality and Process of Sintering Iron Ores – IspatGuru

     · Fig 1 Schematics of sinter mix and product sinter Sintering process is a generic term that is used to describe the process of agglomeration of a green mix of iron ores, fluxes and coke and plant solid wastes having a particle size of -10 mm so as to produce sinter which can withstand operating pressure and temperature conditions existing in a BF.

  • Sinter | Iron to Steel Steel | AMETEK Land

    Sinter. Sintering plants combine iron ore with other "fines" at a high temperature to produce a sintered cake. The sintered material is then charged into the blast furnace. Successful sintering also removes unwanted Sulphur and makes for a more efficient process in the blast furnace. An ARC thermal imager is used to ensure that the sinter is ...

  • fine ore sintering

    Iron Ore Sintering: Raw Materials and Granulation: … Sintering ofiron Ore Fines, and Raw Materials for Bhilai Steel Plant G. P. MATHUR, G. V. SUBRA MANYA and P. 1. A. NARAYANAN A detailed study has been made at the National Metallurgical Laboratory on the sintering charac-