A study was carried out by CanmetENERGY and ArcelorMittal Mines Canada AMMC to investigate the feasibility of reducing fuel consumption and greenhouse gas GHG emissions in an Outotec previously Dravo Lurgi traveling straight grate induration furnace using flue gas recirculation The concept was developed to reduce excess air requirements in the furnace by replacing a fraction of the air
Get PriceTRAVELLING GRATE PROCESS Travelling grate machine used for induration of green pellets resembles the well known sintering machine of Dwight Lloyd design Travelling grate machine is having completely closed hood with many interconnected thermal zones for recirculation of [tpvrdd gas leading to maximum heat recovery
Get PriceThree technology types a shaft furnace straight grate and grate kiln process are usually utilized for induration of iron ore pellets [1] In a straight grate system green pellets are poured on a hearth layer of fired pellets then the drying sintering and cooling operation are performed in seven stages by moving directly in the grate [2]
Get PriceThere 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 In the Grate Kiln system
Get PriceTransportation of technological gases in indurating machines is performed using draft fans and a direct recuperator a fanless method connecting the first section of the cooling zone with the technological furnace zones of drying heating and firing the above mentioned disadvantages are eliminated due to the fact that the straight grate
Get Price1 2 MPTPAPP Free download as Word Doc doc / docx PDF File pdf Text File txt or read online for free Pellet plant
Get PriceBase mix is then loaded on moving sinter machine pallets through belt conveyors and segregation plates Drying of the green pellets to prepare it for induration Firing of dried pellet at high temperature to bring about enhanced strength Straight travelling grate Rotary grate kiln PELLET QUALITY EVALUATION METHOD Drop test
Get PriceE J i AP 42 Section Number 1 1 23 Reference Number 3 Title Standard Support and Environmental Impact Statement for the Iron Ore Beneficiation Industry Draft Reed A K EPA Contract No 68 02 1323 Battelle Columbus Laboratories December 1976 Note This is a reference cited in AP 42 Compilation of Air Pollutant Emission Factors Volume I Stationary Point and Area Sources
Get PriceCrushing Strength Testing Machine for Iron Ore Pellets AIM 675 We manufacture testHow do you test the Cold Crushing Strength The QampA wiki cold crushing strength of a refractory brick is gross pressive stress required to causefracture strength at different carbon levels 1 20 and 1 35 pellets from different layers of the induration bed in
Get PriceThe Grate Kiln induration machine is composed of three separate process pieces of equipment The traveling grate is used primarily to dry and preheat green balls for feeding into the rotary kiln where they are indurated Once the green balls are made they are spread out evenly across the grate
Get PriceContrary to straight grate systems where one half of the induration grate is returned empty to the charging The cooled pellets exit the induration machine at 100°C or less Zone 5 After firing the hood exhaust and the wind box exhaust fans are continuously cleaned to fully meet environmental requirements
Get Pricemeasured by ultrasound probes to ensure the proper speed of the travelling grate 2 3 Indurating Furnace The induration furnace is of circular design that allows the furnace hood to cover more than twice as many pallet cars compared to a straight type induration furnace A far more efficient utilization of installed equipment is thus achieved
Get PriceSadrnezhaad S K Ferdowsi A Payab H Mathematical model for a straight grate iron ore pellet induration process of industrial scale [J] Computational Materials Science 2024 44 2 296 302 [10] Majumder S Natekar P V Runkana V Virtual Indurator A tool for simulation of induration of wet iron ore pellets on a moving grate [J]
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Get PriceThe induration process consists of three main steps; 1 drying for green pellets 2 firing of pellets at 1250 1300°C to sinter the iron oxide particles 3 cooling of hot pellets before discharging them on to the conveyors leading to the stockpiles Figure 1 shows a simplified flow sheet of straight grate indurating machine
Get PriceDeposit formation in the coal fired rotary kiln is frequently found in the production of fluxed iron ore pellets by the grate kiln process and affects normal production In this paper the effects of pellet basicity CaO/SiO2 mass ratio on the simulated deposit formation were investigated The results show that the porosity of deposits samples increases from 30 8 to 41 5% as the pellet
Get PriceThe cabinet is designed to use an exhaust fan because I wanted a negative pressure environment This keeps smell from leaving the box from any place other then the exhaust fan Air enters the cabinet via the mother chamber I used 3 1 inch PVC pipes to provide the air inlets This lets me route the air to different parts of the mother chamber
Get PriceAerodynamics Visualization of Merging Flow by Usage of PIV and CFD with Application to Grate Kiln Induration Machines [Volume 5 Issue 4 2024 Pages 81 89] Aerodynamics Aerodynamic Optimization of Micro Aerial Vehicle [Volume 9 Issue 5 2024 Pages 2111 2121]
Get PriceStraight 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 278 m Balling Disk ОЧ 7500
Get PriceAug 3 2020The straight grate indurating machine includes a movable grate 1 composed of pallet cars that sequentially transports the raw pellets loaded thereon it through the following process zones drying 2 heating 3 induration 4 after firing 5 and cooling 6
Get PriceUS3460818A US553939A US3460818DA US3460818A US 3460818 A US3460818 A US 3460818A US 553939 A US553939 A US 553939A US 3460818D A US3460818D A US 3460818DA US 3460818 A US3460818 A US 3460818A Authority US United States Prior art keywords grate gas pellets gases particulate material Prior art date 1966 05 31 Legal status The legal status is an assumption and is not a legal conclusion
Get PriceThe furnace for pelletizing iron ore is a complex thermal machine in terms of energy balance It contains recirculation fan gases and constant variations in the pro cess and the variation of a single process variable can influence numerous changes in Straight Grate The induration process of iron ore pel lets fundamental to obtain
Get PriceContinuous Casting Machine 1 x 1000 TPD 3 00 000 TPA About 10% Work Induration which means thermal treatment consists of drying heating an d cooling heating an d cooling It can be carried out in two different systems; in straight grate or grate k iln systems During thermal treatment magnetite is almost completely oxidised to
Get PriceThe three common processes used in iron ore pellet production are the shaft furnace process the straight grate process and the grate kiln process 8 As the dominant process for iron ore pellet production in China the proportion of iron ore pellets produced by the grate kiln process has exceeded 70% 9 Deposit formation in a rotary kiln is
Get PriceWhat is a Straight Grate Straight grate or traveling grate is another type of pelletising plant The traveling grate was first developed in the 19th century but it is unclear when it came to use in the iron industry Our first straight grate was built in 1971 and we currently have two running both in Gällivare Malmberget
Get PriceFig 2 Typical schematic diagram of straight grate system The grate kiln system depicted in Fig 1 consists of a traveling grate for drying and preheating the pellets to about 1040 deg C a rotary kiln for uniformly heating the throughput to the final induration temperature of 1315 deg C and an annular cooler for cooling the product and heat recuperation
Get PriceHuang GB Zhu QY Siew CK 2024 Extreme learning machine theory and applications Neurocomputing 70 489 501 Google Scholar; Mitra K Majumder S 2024 Successive approximate model based multi objective optimization for an industrial straight grate iron ore induration process using evolutionary algorithm Chem Eng Sci 66 15 3471 3481
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Get PriceThe induration is carried out in a high temperature furnace designed and optimized to achieve the required pellet chemistry either the Grate Kiln indurating or Straight Grate indurating machine will be used Each process has specific equipment tailored to the process Process fans Both the Grate Kiln and Straight Grate processes use
Get PriceSimilar principles will apply to all modern induration machines in that hot gases from the cooler are recycled back to the kiln and grate The actual recycles number of cooler and grate zones and number of process fans and stacks can be variable Newer traveling grates for grate kiln systems consist of WZR GRZQGUDIW GULQJ ]RQHV DQG D
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