• Modelling of heat recovery in LKAB’s grate-kiln process

    Modelling of heat recovery in LKAB’s grate-kiln process Master’s thesis in Sustainable Energy Systems HANNA ANDERSSON SIMON PEDERSEN Department of Energy and Environment CHALMERS UNIVERSITY OF TECHNOLOGY Gothenburg, Sweden 2015

  • 作者:Hanna Andersson Simon Pedersen关于:Energy engineering Pelletizing Sustainable development Waste heat
  • Iron ore pelletizing Grate-KilnTM system - Metso

    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. In the Grate-Kiln

  • Grate Kiln System

    The GRATE-KILN System significantly reduces pellet production costs by utilizing coal in place of more expensive liquid or gaseous fuels. Coal is directly fired in the GRATE-KILN System, eliminating need for external combustion chambers, slag tapholes, auxiliary burners or special high priced refractories.

  • Grate kiln systems - Metso

    Process overview. Grate Kiln systems consist of three major pieces of equipment. The Grate, the Kiln and the Cooler. 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.

  • Chalmers Open Digital Repository: Modelling of heat ...

    Modelling of heat recovery in LKAB's grate-kiln process. Examensarbete för masamen

  • Author: Hanna Andersson, Simon Pedersen
  • Rotary Kiln Furnace Nitric Oxide Formation in an Iron ...

    energy from the exiting pellet bed.3 In the overall grate- kiln system, water is initially removed from the pellets by thermal action in a two-stage dryer (not shown).

  • KOBELCO Pelletizing System - Contributing to Outstanding ...

    Grate Kiln Process - Lepol Grate-Kiln System (Cement process) is the basis. - Developed by Allis-Chalmers in 1960 with the improvements by KSL 1. Production of high quality pellet 2. Utilization of coal in the main burner KOBELCO Pelletizing System - Kobe Steel acquired the license of Grate-Kiln

  • Direct Reduction Behaviors of Composite Binder Magnetite ...

    posite binder magnetite pellets in grate-rotary kiln has been developed at Central South University and put into operation. A study of the direct reduction behaviors of composite binder magnetite pellets was carried out in a simulating coal-based grate-rotary kiln process in this paper. Preheated pellets

  • Grate-Kiln Operations for Better Pellet Quality

    In testing the pellet plant feed materials from each of the operations, the first test series included firing of fresh plant green balls in the pot-grate and batch rotary kiln in order to avoid green ball degradation. The second test series included balling of the plant concentrate-bentonite

  • Iron Ore Pelletizing Grate-Kiln System Brochure - Metso ...

    Traveling grate CFD Model Baffle walls Preheat zone Common windbox, sloped floor Feautures and benefits Pellet quality Ported kiln operation Predictive control systems Because the induration of the pellets occur in the rotary kiln, the pellets produced in a Grate-Kiln system are consistently of higher quality than those produced in a straight grate.

  • lkab kiln pellet

    GRATE/KILN PELLET INDURATION The Allis-Chalmers grate/kiln process employs a fur-get price; Cement kiln - Wikipedia. The pellets are loaded onto the moving grate, and the hot combustion gases from the rear of the kiln are passed through the bed of pellets from beneath. This dries and partially calcines the rawmix very efficiently.

  • Rotary Kiln: Combustion Chambers innergy Innergy

    Rotary Kiln. INNERGY has several types of models of combustion chambers in the market, each of these technologies being designed and adapted to the particular needs of each project.. Depending on the type of fuel, biomass or waste, the application of a different type of combustion system is recommended, which are currently: fixed grate, mobile grate, fluid bed and rotary kiln.

  • INDUSTRIES Kartherm

    Pellet Plant, Cylones, Travelling grates, Kilns, Coolers. Reheat Furnaces, Walking Beam or Pusher Furnaces, Electric Arc Steel Melting. Direct Reduction Iron Plant, Midrex or HYL Process. Ladles, associated equipment. Petrochemical/Refinery Methanol Steam Reformers, Transfer Lines, Waste Heat Boilers. Catofin Reactors,

  • Pelletizing –Technology for Generation Next

    temperature. abrasion from pellets. Modular design of traveling grate allows All repairs of the grate component removal and replacement of single pellet occurs “ off line “ The complex chain in about 5 minutes while process grate in the grate kiln process must be temperatures are maintained. shut down cooled for maintenance.

  • Iron-process pellets furnace iron - YouTube

    1/10/2012  The traveling grate transports the pelletized concentrate through a series of controlled temperature zones to produce a preheated pellet of 800-900°C, which is dropped into the rotary kiln

  • Magnetite oxidation in North American iron ore pellet ...

    Processes: Grate-kiln-cooler; straight-grate green pellets grate kiln Grate-kiln process (Forsmo, 2007) indurated pellets cooler. Pellet temperature (°C) 1400 1000 grate kiln cooler top Thermal profile: grate-kiln process (after Young et al., 1979) time 600 200 30 min bottom top bottom ~50% oxidation ~50% oxidation. Fe 3O4 Liquid metal Liquid oxide γ-Fe δ-Fe α-Fe air Fe 2O3. Research ...

  • comparision straight grate versus grate kiln cooler

    Modelling of heat recovery in LKAB's grate-kiln process - Chalmers . 5.5 Comparison between the pellet bed isotherms in the cooler with am- . There are two main pelletizing processes, the travelling (or straight) grate process.

  • Temperature Distribution of Iron Ore Pellet Bed in Grate ...

    The downward flow has temperature limitations due to top layer pellet spalling and heat recovery restriction 6 . Feng et al. (2012) have gathered temperatures in the grate zone of a grate-kiln ...

  • Iron Ore Pelletizing Process: An Overview IntechOpen

    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 are then charged on ...

  • grate kiln process flowsheet

    Iron Ore Pelletizing Grate-Kiln System Brochure . 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. Get ...

  • Iron Ore Pelletizing Process: An Overview IntechOpen

    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 are then charged on ...

  • grate-kiln iron ore pelletizing plant manufactuter in china

    Iron Ore Pellets - Manufacturers, Suppliers Exporters Find here Iron Ore Pellets manufacturers, Iron Ore Pellets suppliers, Iron Ore Pellets ... Four plants of 600 tpd commissioned in march 2011 in raipur ... in China, the company has decided to establish one Iron Ore Pelletization....has designed and supplied the most modern and largest grate-kiln systems in the world.

  • rotary kiln and straight grate technology

    Brochure Grate Kiln for Iron Ore Pelletizing - . Grate-Kiln. 250. –. 380 mm. Straight-Grate. 150 mm. The green balls formed during the agglom- ... The rotary kiln is a downwards sloping cylinder from the traveling grate to the annular cooler. The ... technology for Grate-Kiln® pellet plant will. Read More

  • Combustion Profile of a Grate- Rotary Kiln Incinerator

    COMBUSTION PROFILE OF A GRATE-ROTARY KILN INCINERATOR ABSTRACT P. H. WOODRUFF Roy F. Weston, Inc. Wilmette, Illinois A study was made of a 300-ton-per-day grate-rotary­ kiln incinerator. Sampling data were obtained at the end of the rotary kiln, in the secondary combustion chamber, just ahead of the spray chambers, and in the stack. Sam­

  • kiln iron–ore pellet induration process - PDF Free Download

    A Dynamic Mathematical Model of the Complete Grate/Kiln Iron-Ore Pellet Induration Process J.A. THURLBY Induration (drying and hardening) of iron ore pellets is an energy-intensive feed preparation step for both the blast furnace and direct reduction routes to iron. It is commonly carded out by a 'grate/kiln' process. A mathematical model of ...

  • Understanding Pellets and Pellet Plant Operations –

    21/03/2015  disc pelletizer, grate kiln proces, Pelletization, pellets, rotating drum, Travelling grate process, Understanding Pellets and Pellet Plant Operations Pelletizing is an agglomeration process which converts very fine grained iron ore into balls of a certain diameter range (normally 8mm to 20 mm, also known as pellets.

  • Heat recovery analysis in grate-kiln pelleting plant

    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.

  • Iron Ore Pellet Kiln Burners - FCT Combustion

    A range of high-quality, compact burners, specifically designed for iron ore sintering and pelleting plants using traveling grate kilns. Iron Ore Pellet Kiln burners can also be used in a number of other applications such as hot gas generators, calciners and pre-heat chambers.

  • A Case Study on Large-scale Grate-kiln Production of ...

    ABSTRACTThere has been increasing demands for large-scale pelletization equipment recently in order to improve the composition of blast furnace burden, conserve energy and reduce emission. Accordingly, the BaoSteel built the Zhanjiang palletization plant with the capacity of 5 million-tons per year, which holds the record in the world for the largest grate-kiln to produce fluxed pellets.

  • Energy analysis of pelletising in a straight grate ...

    upgrading process system - analysis of mass and energy flows within a straight grate induration furnace. Proceeding of 18th International Congress of Chemical and Process Engineering, Prague, Czech Republic, 24-28 Aug 2008. C. Nordgren S, Dahl J, Lindblom B. Green pellet temperature influence of

  • Heat recovery analysis in grate-kiln pelleting plant

    Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.

  • A Case Study on Large-scale Grate-kiln Production of ...

    ABSTRACTThere has been increasing demands for large-scale pelletization equipment recently in order to improve the composition of blast furnace burden, conserve energy and reduce emission. Accordingly, the BaoSteel built the Zhanjiang palletization plant with the capacity of 5 million-tons per year, which holds the record in the world for the largest grate-kiln to produce fluxed pellets.

  • Great kiln by Metso Perumin - Issuu

    2/09/2013  Product Presentation. Pellet Quality Because the induration of the pellets occur in the rotary kiln, the pellets produced in a Grate-Kiln System are consistently of higher quality than those ...

  • Grate Kiln, Grate Kiln Suppliers and Manufacturers at ...

    Grate Rotary kiln is widely used in the metallurgy,chemical industry,construction and other industries. Application of Grate Rotary Kiln 1. Grate Rotary kiln is an ideal machine for calcining high-grade cement in cement plants. 2. Grate Rotary kiln, which is also called rotary calcine kiln, is a commonly used building material machine.

  • IRON ORE PELLET KILN BURNERS - FCT Combustion

    IRON ORE PELLET KILN BURNERS The premier, proven burner for iron ore sintering and pelleting plants using traveling grate kilns. Industry Applications: Traveling grate kiln for iron-ore Product Details: - Gaseous or Liquid fuel systems. - 2-8MW maximum - Multi-fuel capability: can be used in combination with all fuels particularly: -specifically designed for iron ore sintering and Bio gas ...

  • new grate kiln plants - dietisthoofddorp.nl

    Deposit Formation in a Grate-Kiln Plant for Iron-Ore ... 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.

  • APPLICATION OF COMPUTATIONAL FLUID DYNAMICS MODELLING ON ...

    k index for layers in a pellet INTRODUCTION Description of Grate-Kiln Process LKAB has three pelletizing plants based on the Grate-Kiln process and a fourth plant, KK4, is under construction. The process consists of three parts; grate furnace with moving grate band, rotary kiln and an annular cooler, see flowsheet in Figure 1.

  • Iron Pellets Processing Grates

    iron ore grate kiln pellet plant process. The grate-kiln induration machine - SciELO. One method used for pelletizing is the grate-kiln process, first established in 1960. . The first iron ore pellet plant of the grate-kiln type was established at. Get Price And Support Online; Pellet Plant Process Flow Chart With Straight Grate Technology

  • grate-kiln equipment

    Hongda Company is specialized in manufacturing and erecting set of traveling grate-rotary kiln pellet production line with sci-technology researching, designing and production. Its floor area is 130,000m2 and capital assets is 22.5 US M$. It is the largest supplier of pellet equipment in China with a market share 95.4%. The Company has passed ...

  • Initial stage of deposit formation process in a coal fired ...

    The preheated pellet powder, deposit sample and coal were provided by an iron ore pellet plant in China. In the grate-kiln plant, the grate has a length of 56 m and a width of 4.5 m, the diameter of the kiln is 6.1 m and its length is 40 m. The required roasting temperature in the rotary kiln to obtain qualified roasted pellets is about 1280 ...


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