• Traveling grate pelletizing | Outotec

    Gol e Gohar iron ore pelletizing plant in Iran. Our traveling grate process is the leading technology for producing pellets suitable for blast furnace and direct reduction. ... Use of single process plant for pellet drying, preheating, firing and cooling.

  • Taconite Ore Processing - Environmental Protection Agency

    Sep 27, 2012 ... Ninety-nine percent of the crude iron ore produced in the United ... The average iron content of pellets is 63 percent. ..... The grate/kiln apparatus consists of a continuous traveling grate ... insignificant for the rest of the process until the drying stage of ... indurating furnace as preheated combustion gas.

  • “best available techniques” for the cement industry - Coprocem

    Drying, Preheating, Precalcining and Sintering Process. 99. Section 6.7 ..... “Corrective” materials such as bauxite, iron ore or sand may be required to adapt the chemical ..... extruded into pellets and fed to a travelling grate preheater or.

  • Comparação de Tecnologias de Gaseificação de Biomassa para ...

    The iron ore pelletizing process consumes high amounts of energy, ... be utilized in the traveling grate, but it would require burners to be changed. ..... erage, pelletizing processes consume 49 kWh of electricity per ton of iron pellets (EPE 2011), .... ted to several stages: updraft drying, downdraft drying, preheating, firing (or...

  • Today's Challenges. Tomorrow's Opportunities. - Association for Iron ...

    See the latest technology and industry processes up close with tours of: • ArcelorMittal ..... Large Traveling Grate Machine ... Stockhouse-Based Defreezing, Drying and Pre-Heating of .... Permeability During Drying Stage of Iron Ore Pellets.

  • Patent US3332770 - Apparatus for reduction firing of iron ore pellets ...

    The pellets are then subjected to drying and preheating steps, and then ... content of the pellets to iron during the firing or heat-hardening process, but so far as we ... Pellets so prepared are then placed on the traveling grate machine, and after...

  • 2 Steel Industry: Production Processes

    Iron ore occurs as lump ore and fine ore, and the latter is often processed into .... Kaiserstuhl III coke works, 120 tall, wide ovens, dry- ... Pellet production takes place by rolling of ore fines to balls, green pellets, and ... takes place in a travelling-grate system, a grate-kiln system, or a shaft furnace. ...... Dried and prehe...

  • Iron Ore Processing for the Blast Furnace

    Creating steel from low-grade iron ore requires a long process of mining, crushing, separating ... producing 5.35 million tons of pellets each year. It employs .... to the traveling grate furnace for further drying and preheating. The grate is fired by.

  • Annexure-PFR - Environmental Clearances

    Projected demand of Indian iron ore pellets(MT). 12. 2.6 ..... The process of pelletisation will be based on straight grate or travelling grate technology. ..... dried pellets will be preheated to a progressively higher temperature to initiate magnetite.

  • PREREDUCED IRON ORE PELLETS: PREPARATION ...

    Schematic flowsheet of process used to simultaneously inclurate and metallize ... Rotary kiln used in simultaneous reduction and incluration of iron ore pellets . . , . v ..... In all processes, the green pellets are dried and ... naces are featured in one process,5 and traveling ... tions in grate machines as well, depending on the.

  • mathematical model for energy saving in induration of iron ore ... - Sid

    OF IRON ORE PELLETS CONTAINING SOLID FUEL ... sub processes; drying, firing and cooling have checked the validity of the model. ... traveling grate is the pot grate as shown in Figure. 1. ..... preheating condition is injected to the furnace.

  • PDF (2062 K) - International Journal of Iron & Steel Society of Iran

    Effect of Using Oxygen-Enriched Gas during Induration Process of Iron. Ore Pellets Containing Solid Fuel. M. Alizadeh*1 ... through the drying zones such as updraft and/or downdraft drying. ... The temperature of the incoming gas at the preheat ... The traveling time through ... of the pellets. In a straight-grate, less than half.

  • Mysore Kirloskar - TWENTY FIRST CENTURY GROUP

    In this unit, pellets of desired size will be formed with iron ore as raw material and ... In this process water is added to the ore and is transported to several 4” steel ... travelling grate furnace for further drying and preheating by using natural gas...

  • Iron ore Pelletisation – Technology and need - MMMM) Conferences

    In our country as a whole, about 65% of iron ore production ... suitability for storage, pellets can be easily ..... process travels downward. .... Item. Traveling Grate. Grate Kiln. Heat hardening cycle. Drying, preheating, induration and cooling are.

  • wzngu @2183mzEEbumumzcEaE<mo223

    especially the invention is for the processing of iron ore ... formed onto a traveling grate machine in which the pellets are dried, preheated, ?red at high temperature, 'and then cooled. ... The present invention desirably makes use of a process.

  • Experiences and operational results with a chromium-ore pelletizing ...

    the process and the quality of the product were obtained. The results of the ... The chain of the travelling grate is fed with pellets, which are de- watered, dried, and preheated while passing through the ... The pelletizing of iron ores or iron-ore.

  • Influence of Oxide and Silicate Melt Phases on the RDI of Iron Ore ...

    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 ... The temperature in iron ore pelletizing process is as high as 1 300–1 320°C, so that a significant amount of liquid slag forms in...

  • iron processing :: Pelletizing | Encyclopedia Britannica

    Use of a smelting process to turn the ore into a form from which products can be ... traveling-grate process, pellets are charged at one end and dried, preheated,...

  • Drying and preheating processes of iron ore pellets in a traveling grate

    Drying and preheating processes of iron ore pellets in a traveling grate. Jun-xiao Feng, Yu Zhang, Hai-wei Zheng, Xiao-yan Xie, and Cai Zhang. School of...

  • Inquiry for Heamtite iron ore fines pre-hardening ,as hot feed to DRI ...

    Inquiry for Heamtite iron ore fines pre-hardening ,as hot feed to DRI rotary kiln in ... Syed Danish A. Industrial Marketing of Process Technology, Plant Machinery and ... Travelling Chain Grate Bar for pellet drying, preheating ,and firing (with ... fan for drying, preheating green pellets, multi-tube dust collector and related flap...

  • Iron ore pellets and Pelletizing processes | ispatguru.com

    Feb 23, 2013 ... In the Grate-Kiln process (Fig 3) the traveling grate is used to dry and preheat the pellets. Material moves on straight travelling grate till it attains...

  • 2.C.1 Iron and steel production - European Environment Agency

    040210. Processes in iron and steel industries and collieries ..... Pellets are formed from iron-containing raw materials (i.e., fine ore and additives) into 9–16 mm.

  • 1 TECHNO ECONOMIC EVALUATION OF IRON ORE PELLET ...

    However, as a result of preparation and enrichment processes in the iron ore ..... a Grate-Kiln System, the travelling grate is used to dry and preheat the pellets.

  • Federal Register | National Emission Standards for Hazardous Air ...

    Dec 18, 2002 ... D. What Processes Are Used at Taconite Iron Ore Processing Plants? .... The traveling grate carries the unfired pellets into a dryer/preheater...

  • technology, energy efficiency and environmental externalities in the ...

    Institute of Technology (AIT) makes any warranty, expressed or implied, or assume any .... Three energy intensive and environmentally polluting industrial sub-sectors (cement, iron & ...... This drying unit may be the third compartment of a traveling grate ... In the semi-dry process, nodules or pellets (approximately 12% water)...

  • Metallurgical Furnaces

    days, limestone calcining [138], iron ore reduc- tion, and PbZn .... made from silicate compounds in the preheat- ing zone. In iron ore .... A) Wet process; B) Dry process; C) Process with precalcining. 1.3.4. Iron Ore ... 2) Calcination of pellets after preliminary heat treatment on a traveling grate (e.g., see. → Iron, Chap. 2.1.1.5....

  • HOW ORE IS PROCESSED - LKAB

    LKAB's iron ore pellets are high quality products that streamline customers' production of ... Today, LKAB processes all iron ore mined from its below-ground and.

  • Pellatization of Iron ores - SlideShare

    Aug 13, 2014 ... Engr 241 ▫Pelletizing is the process of compressing or molding a material into the ... ▫Green balls are first dried and preheated on the straight grate followed by ... ▫Travelling grate machine used for induration of green pellets...

  • Nitric Oxide Formation in an Iron Oxide Pellet Rotary Kiln Furnace

    traveling grate before the pellets are fed to the kiln. Fi- nally, the gas from the preheater is used in the second stage of the dryer or vented as waste gas along...

  • Mathematical models and expert system for gratekiln process of iron ...

    gratekiln process of iron ore oxide pellet production (Part I): ... drying (DDD), tempered preheating (TPH) and preheating (PH). Pellets at .... The moving rate of.