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Energy analysis of pelletising in a straight grate ...

The green pellet temperature tends to be an important parameter regarding the efficiency of the straight grate induration furnace. It is believed that an increased green pellet temperature will increase the productivity and the durability of the pellet and also decrease the specific energy consumption.

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(PDF) Iron Ore Pelletizing Process: An Overview

06/10/2017  The most widely used industrial processes for pellet induration are the straight grate and the . grate-kiln. The straight grate process is composed of a single furnace where an endless line of ...

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Iron Ore Pelletizing Process: An Overview IntechOpen

11/07/2018  The iron ore pelletizing process consists of three main steps: ... The most widely used industrial processes for pellet induration are the straight grate and the grate-kiln. The straight grate process is composed of a single furnace where an endless line of pallet cars moves. A layer of indurated pellets is arranged at the bottom of each car to protect it against the heat. The green pellets ...

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Iron ore pelletizing - Metso Outotec

Both straight grates and grate kilns dry the pellets out in a drying section, then bring the pellets up to a temperature of about 800-900 °C in a preheat zone, then finish the induration process at roughly 1200-1350 °C. The pellets are then cooled to a suitable temperature for transporting to a load out facility.

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Dynamic simulation of pellet induration process in ...

furnace, grate-kiln system, and travelling straight grate. The latter process that was primarily developed by Lurgi and is currently owned by OutoKumpu Technology, accounts for two thirds of the world’s installed pelletizing processes capacity. This study is focused on simulation of pellet induration process in the straight-grate system.

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straight grate iron ore pellitizing technology Solution ...

21/11/2012  Mathematical model for a straight grate iron ore pellet induration process of industrial scale University of Technology, P.O. Box 11365-9466, Tehran, Iran, Minera Group is coming up with India’s first pellet plant for 0. Minera Steel and Power Pvt. Ltd., Bellary, Karnataka has placed the order on VT CORP PVT LTD for 0.6 MTPA Iron Ore Pellet Plant on Straight Grate Technology ...

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Metso Metso –– Iron Ore Pelletization Iron Ore ...

-Final point of pellet induration in grate kiln system - ... Straight Grate iron ore pelletizing system 29 Map Locatio n Plant Name Location Owner Rated Tonnage (10 6 TPY) Start -up Ore Type No. Units 22 JSW I Toranagallu Karnataka, India Jindal South West Ltd. 3.0 1999 Hematite 1 23 JSPL Barbil, Orissa, India Jindal Steel and Power Ltd. 4.0 2009 Hematite 1 24 Essar I Paradeep, India Essar ...

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Straight grate systems - Metso Outotec

The complete process is done on the grate. The object of the process is to transform the pelletized concentrate into hardened pellets that can be used as blast furnace feed or direct reduction furnace feed. When pellets are fed onto the grate, they are dried and then pre-heated up

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STRAIGHT GRATE INDURATION MACHINES - FE Techno

Straight grate induration machine for 100% hematite. Working area – 189 m Construction of pelletizing plant no.3 with straight grate induration machine “МОК-592М”. Working area – 592 m Pallets 4.0х1.5 Reconstruction of straight grate induration machine Lurgi-278 “B” Working area –

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difference between rotary kiln and straight grate technology

The rotary kiln process for iron ore pelletizing is one of the main methods to upgrade crude iron ore The mining company LKAB runs four GrateKiln production sites in northern Sweden where a grate and a rotary kiln are combined to thermally indurate the iron ore pellets

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Iron Ore Pelletizing Process: An Overview IntechOpen

11/07/2018  The iron ore pelletizing process consists of three main steps: ... The most widely used industrial processes for pellet induration are the straight grate and the grate-kiln. The straight grate process is composed of a single furnace where an endless line of pallet cars moves. A layer of indurated pellets is arranged at the bottom of each car to protect it against the heat. The green pellets ...

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straight grate induration process for iron ore pelletizing

Iron ore pelletizing TON Outotec. The green pellets are then fed to the induration machine. Both straight grates and grate kilns dry the pellets out in a drying section, then bring the pellets up to a temperature of about 800-900 °C in a preheat zone, then finish the induration process

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Mathematical model for a straight grate iron ore pellet ...

In iron ore pellet production, an increased green pellet temperature has a positive influence on the straight grate induration furnace. Previous studies show that this can lead to both higher ...

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straight grate iron ore pellitizing technology Solution ...

21/11/2012  Mathematical model for a straight grate iron ore pellet induration process of industrial scale University of Technology, P.O. Box 11365-9466, Tehran, Iran, Minera Group is coming up with India’s first pellet plant for 0. Minera Steel and Power Pvt. Ltd., Bellary, Karnataka has placed the order on VT CORP PVT LTD for 0.6 MTPA Iron Ore Pellet Plant on Straight Grate Technology ...

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Introduction to Iron ore Pellets and Pelletizing processes ...

23/02/2013  Grate kiln process, Green pellets, Iron ore fines, iron ore pellets, Pelletization processes, Pelletizing disc, Straight travelling grate process, Introduction to Iron ore Pellets and Pelletizing processes. Pelletizing is a process which involves mixing of very finely ground particles of iron ore fines having a size which is less than 200 mesh (0.074 mm) with additives like bentonite and then ...

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STRAIGHT GRATE INDURATION MACHINES - FE Techno

Straight grate induration machine for 100% hematite. Working area – 189 m Construction of pelletizing plant no.3 with straight grate induration machine “МОК-592М”. Working area – 592 m Pallets 4.0х1.5 Reconstruction of straight grate induration machine Lurgi-278 “B” Working area –

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Process integration in an iron ore upgrading process ...

Process integration in an iron ore upgrading process system – Analysis of mass and energy flows within a straight grate induration furnace S. Nordgren1, 2, J. Dahl1, C. Wang2, B. Lindblom3 1 Div. of Energy Engineering, Luleå University of Technology, 971 87 Luleå, Sweden; Tel. +46 920 492020; Fax. +46 920 491047; E-mail. [email protected] 2 PRISMA – Centre for Process Integration in ...

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difference between rotary kiln and straight grate technology

The rotary kiln process for iron ore pelletizing is one of the main methods to upgrade crude iron ore The mining company LKAB runs four GrateKiln production sites in northern Sweden where a grate and a rotary kiln are combined to thermally indurate the iron ore pellets . Rotary kiln Wikipedia. A rotary kiln is a pyroprocessing device used to raise materials to a high temperature calcination in ...

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Influence of Oxide and Silicate Melt Phases on the RDI of ...

“straight-grate” machines all these four stages are com-pleted on a travelling grate, where as in “Grate-kiln” ma-chines, drying and preheating takes place on grate, the fir- ing process is performed in a rotary kiln before the pellets are transferred into an annular cooler. The temperature in the pelletizing process is as high as 1300–1320°C, so that a significant amount of ...

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Circular Pelletizing Technology - Metal Bulletin

• well-proven travelling grate process • robust mechanical design from the circular dip rail cooler The result is the revolutionary: • Circular Pelletizing Technology Circular Pelletizing Technology A SMART combination Straight grate induration process Mechanical system of SVAI circular dip rail cooler Circular Pelletizing Technology + =

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Iron Ore Pelletizing Process: An Overview IntechOpen

11/07/2018  The iron ore pelletizing process consists of three main steps: ... The most widely used industrial processes for pellet induration are the straight grate and the grate-kiln. The straight grate process is composed of a single furnace where an endless line of pallet cars moves. A layer of indurated pellets is arranged at the bottom of each car to protect it against the heat. The green pellets ...

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Introduction to Iron ore Pellets and Pelletizing processes ...

23/02/2013  Grate kiln process, Green pellets, Iron ore fines, iron ore pellets, Pelletization processes, Pelletizing disc, Straight travelling grate process, Introduction to Iron ore Pellets and Pelletizing processes. Pelletizing is a process which involves mixing of very finely ground particles of iron ore

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Iron Ore Pelletizatton Layering Mechanism

26/05/2018  Iron ore pelletization is a two step process consisting of pellet production in balling circuits and pellet induration in straight-grate or grate-kiln systems. Extensive applied research and plant scale testing have been directed to understanding and improving the induration process and pellet

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straight grate pelletizing plant indurating machine

straight grate pelletizing plant indurating machine. The furnace for pelletizing iron ore is a complex thermal machine, in terms of still raw and damp, are thermally processed in mobile grill furnaces (Straight Grate). The induration process of iron ore pellets, fundamental to obtain adequate fuel (natural gas) that feeds the furnace .

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Grate-Kiln System for iron ore pelletizing - Metso ...

Process flexibility Pelletization process There are two main processes for producing iron ore pellets: The Grate-Kiln system and the straight grate system. In the straight grate system, a continuous parade of grate cars moves at the same speed though the drying, induration and cooling zones. Any change in one section effects the residence time in another. Pelletization is comprised of two main ...

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straight grate iron ore pellitizing technology solution for

PDF Iron Ore Pelletizing Process An Overview . Nov , both straightgrate and gratekiln furnaces have been accepted in the iron ore industry both are considered to be roughly equal when comparing overall costs and expenses versus the final product . PDF GUIDELINES FOR SELECTING PELLET PLANT TECHNOLOGY. The straight grate technology has been proved for all ore types and has achieved

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Circular Pelletizing Technology - Metal Bulletin

• well-proven travelling grate process • robust mechanical design from the circular dip rail cooler The result is the revolutionary: • Circular Pelletizing Technology Circular Pelletizing Technology A SMART combination Straight grate induration process Mechanical system of SVAI circular dip rail cooler Circular Pelletizing Technology + =

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induration process in the iron industry

Iron Ore Pellets Induration Solutions Metal 7. Iron ore pelletizing industry / Iron Ore Pellets Induration Solutions; Iron Ore Pellets Induration Solutions Iron ore green balls are soft and easy to break So after the pelletizing and screening operations, iron ore pellets have to be hardened in a furnace through a firing process Once fired, they can be handled, loaded in ships or trains

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Iron Ore Induration Straight Grate Machine

Iron Ore Induration Straight Grate Machine. Mathematical models of straight-grate pellet induration processes have been developed and carefully validated by a number of workers over the past two decades. however, the subsequent exploitation of these models in process optimization is less clear, but obviously requires a sound understanding of how the key factors control the operation. in this ...

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Understanding Pellets and Pellet Plant Operations – IspatGuru

21/03/2015  Iron ore pellets can be made from beneficiated or run of mine iron ore fines. Lean iron ores are normally upgraded to a higher iron ore content through beneficiation. This process generates iron ore filter cake which needs to be pelletized so that it can be used in an iron making process. Also during the processing of high grade iron ores which do not need beneficiation, generated fines can be ...

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Computational Materials Science

Mathematical model for a straight grate iron ore pellet induration process of industrial scale S.K. Sadrnezhaad*, A. Ferdowsi, H. Payab Materials and Energy Research Center, P.O. Box 14155-4777, Tehran, Iran Center of Excellence for Advanced Processes of Production of Materials, Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran,

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Process integration in an iron ore upgrading process ...

Process integration in an iron ore upgrading process system – Analysis of mass and energy flows within a straight grate induration furnace S. Nordgren1, 2, J. Dahl1, C. Wang2, B. Lindblom3 1 Div. of Energy Engineering, Luleå University of Technology, 971 87 Luleå, Sweden; Tel. +46 920 492020; Fax. +46 920 491047; E-mail. [email protected] 2 PRISMA – Centre for Process Integration in ...

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Grate-Kiln System for iron ore pelletizing - Metso ...

Process flexibility Pelletization process There are two main processes for producing iron ore pellets: The Grate-Kiln system and the straight grate system. In the straight grate system, a continuous parade of grate cars moves at the same speed though the drying, induration and cooling zones. Any change in one section effects the residence time in another. Pelletization is comprised of two main ...

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Effective Use of Available Heat for Maintaining a High ...

In iron ore pellet production, an increased green pellet temperature has a positive influence on the straight grate induration furnace. Previous studies show that this can lead to both higher production capacity of the induration furnace and also reduced specific oil consumption. The aim of this study is to apply the process integration concept to analyze how to maintain a high green pellet ...

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MATHEMATICAL MODEL FOR ENERGY SAVING IN INDURATION OF IRON ...

plant scale iron ore pellet induration furnaces is presented. The experiment was performed in such a way that phenomena of heat transfer, drying and coke combustion [8]. K. H. Boss [9] developed a model for straight grate pelletizing process and added higher amounts of coke to iron ore pellets without effecting the quality of fired pellets. Mark Cross [11] developed a mathematical model of ...

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Grate-KilnTM System for Iron Ore Pelletizing Essay - 978 Words

Green pellets Grate castings Grate-Kiln Green pellets Fired pellets hearth layer Grate bars 127 – 230 mm Process Flexibility There are two main processes for producing iron ore pellets: The Grate-Kiln System and the straight grate system. In the straight grate system, a continuous parade of grate cars moves at the same speed though the drying ...

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Improving Pelletizing Plant Performance

process for each type of iron ore concentrate ... Green field installation of Straight Grate Pelletizing Plant. Nominal capacity of 6mtpy achieved in first year of production in 2017. 2017 Sidor Venezuela X 2 x 3.3 Overall plant revamp of one pelletizing line for increase of productionand energy efficiency. 2018 n.d.** Asia X 2.5 Contract awardnessfor installation of a green field Straight ...

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Iron Ore Pelletizing Process: An Overview

The iron ore pelletizing process consists of three main steps: 1. Pelletizing feed preparation and mixing: the raw material (iron ore concentrate, additives anthracite, dolomite and binders are prepared in terms of particle size and chemical specifications, dosed, and mixed together to feed the pelletizing process; 2. Ballingprocess ...

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OUTOTEC TRAVELING GRATE PELLETIZING

Outotec Traveling Grate Pelletizing is the industry’s leading induration technology for iron ore pellet processing and is designed for a wide range of plant capacities up to 9.25 million t/a. Based on over 60 years’ experience and world-class RD, our process produces uniform pellets with excellent physical and metallurgical properties. It ...

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Influence of Oxide and Silicate Melt Phases on the RDI of ...

“straight-grate” machines all these four stages are com-pleted on a travelling grate, where as in “Grate-kiln” ma-chines, drying and preheating takes place on grate, the fir- ing process is performed in a rotary kiln before the pellets are transferred into an annular cooler. The temperature in the pelletizing process is as high as 1300–1320°C, so that a significant amount of ...

Get Price