Free shuttle to visit the factory
Dec 03, 2012 In a plasma fired iron ore induration furnace, from conduit 10 providing hot recuperated air from the pellet cooling zone, there would be a plurality of downcomers 11, or conduits 21, leading to the laterally extending tunnels 14, or shafts 24, where the hot recuperated air would be mixed with the extremely hot air heated by the plasma torches ...
Dec 03, 2012 In the present pelletizing apparatus, the induration of iron ore concentrate pellets is achieved in a tunnel furnace heated by plasma torches, wherein the generation of CO2 by the conventional iron ore pelletizing processes is reduced by using electricity powered plasma torches instead of burning natural gas, heavy oil or pulverized coal in burners, thereby reducing considerably
Jul 18, 2013 Finally, the pellets were cooled by passing ambient air across the bed. The pellet induration model is based on the equations describing the phenomena of heat and mass transfer, gas flow, drying and combustion of coke. The experiments and the pellet induration cycle were simulated by solving the differential equations.
Corpus ID 136176503. Iron ore sintering and pellet induration processes inproceedingsWynnyckyj1985IronOS, titleIron ore sintering and pellet induration processes, authorJ. R. Wynnyckyj and R. J. Batterham, year1985
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 and delivered to the end users. Two indurating furnace technologies ...
Jun 13, 2014 Use of Iron Ore Pellets in Blast Furnace Burden. satyendra June 13, 2014 0 Comments BF burden, blast furnace, Hot metal, Iron ore, iron ore pellets, sinter, Use of Iron Ore Pellets in Blast Furnace Burden Pelletizing is a process that involves mixing very finely ground particles of iron ore fines of size less than 200 mesh with additives like bentonite and then shaping them into
Heat and mass transfer of individual pellets exposed to a stream of air has been subject to computational fluid dynamics simulations. 2 In earlier energy transfer measurements, the diffusivity of individual iron ore pellets was found to range between 2.9 and 3.6 10 7 m 2 s 1 over a temperature range from room temperature to 680 C.
Feb 23, 2013 Induration During the induration, heat hardening of green pellets is carried out. Induration of green pellets consists of three main steps namely i drying of green pellets, ii firing of pellets at around 1300 deg C to sinter the iron oxide particles, and iii cooling of hot pellets
High grade iron ore less than 10 of the total reserves. ROM iron ore with Fe less than 58 60 discarded as waste. After beneficiation iron ore availability can improve by about 50. Steel community and the country demand technological solutions for utilising low grade ores. The technology task that would be imperative 1.
Jul 11, 2018 The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, the content of iron in ore deposits has deteriorated and low-grade iron ore has been processed. The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking. This chapter shows the status of the pelletizing
Keywords Goethite Ore, Disc Pelletizer, Iron Ore Pellet, Induration, Cold Compressive Strength Introduction Indian blast furnaces are fed with lump iron ore 10 - 40 mm and sinter as burden. Sinter is a prepared burden, where iron ore fines of size -10 0.15 mm are
Jun 03, 2021 Primetals Technologies and NewFer join forces for iron ore pelletizing and beneficiation technologies. ... such as heat and mass balances and other main process parameters as well as the design of the induration machine. ... For the calculation of the heat balance and the design of the individual process zones of the induration furnace, an ...
A first principle Gas consumption Nm t 11.5 10.4 Pellet temperature at discharge C 314 335 simulator of an iron oxide pellet induration furnace - An Abrasion Index mid bed height 6.6 5.74 application to optimal tuning, Can. Metal.
Sep 09, 2019 As a result, there is no increase in pellet discharge temperature. With this method of controlling the heat balance, it becomes possible to indurate hematite or mixtures of hematite-magnetite at the same rate as a 100 magnetite feed. The exothermic heat of reaction of a ton of magnetite concentrate is approximately 400,000 Btu.
Basically a straight grate induration furnace consists of three different zones, i.e. a drying zone, a firing zone and a cooling zone, and their purpose is to upgrade crude iron ore to the final product of iron ore pellet. As an initial step of the project, the mass and energy flows within a straight grate induration furnace have been analysed.
both in terms of heat and mass exchange between solids and gases. Blast furnace operation In the blast furnace burden consists of iron ore sinterpellets coke limestonelime at 298K is charged from top. During its descent, there occurs heat and mass exchange with the hot gases which are moving
Iron ore pellets, derived from the steps of milling, filtering, mixing and pelletizing while still raw and damp, are thermally processed in mobile grill furnaces Straight Grate. The induration process of iron ore pellets, fundamental to obtain adequate mechanical strength of the pellets, occurs in the burning zone region in the furnace, and ...
Iron Ore Feed Material Blend of Orissa Blue Dust 100 Hematite Product Specifications Iron Ore Pellets for Blast Furnace and DRI Feed Straight Grate System Reference Plant JSPL Barbil Line
Mathematical Modelling of Heat and Mass Transfer in Hematite Pellet Induration Straight Grate Furnace at REACTOR SCALE ... A short summary of this paper. 34 Full PDFs related to this paper. READ PAPER Mathematical Modelling of Heat and Mass Transfer in Hematite Pellet Induration Straight Grate Furnace at REACTOR SCALE ... Mathematical ...
Oct 01, 2013 The heat exchange Q S g among the individual pellet and gas should be calculated from external effective heat coefficient among gas and pellet in the furnace conditions using RanzMarshall Correlation to convective heat transfer and StefanBoltzmann Law to radiation heat transfer 7 Q S g h e f f A T s T f A T s ...
Recrystallization of Fe 2 O 3 During the Induration of Iron Ore Oxidation Pellets 333 4 6 8 1012 1416 400 600 800 1000 1200 1400 a-preheating temp. 900 o C HM7030 HM5050 Compression strength of preheated pellet NP Preheating time min 800 850 900 950 1000 200 400 600 800 1000 1200 b-preheating time 10min Preheating temperature Fig. 2.
B. Nordgren S, Dahl J, Lindblom B, Wang J. Process integration in an iron ore 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.
Fired pellets are hard iron bearing balls that are produced to a specific size range by forming iron concentrate into unbaked green pellets and then heat hardened these green pellets in a dedicated induration furnace. The main feed materials are finely ground iron ore concentrate, finely ground fluxes and, in the case of hematite ores,
Outotecs traveling grate pelletizing plant is the industrys leading induration technology for iron ore pellet production for a wide range of plant capacities. Based on over 60 years experience and world-class RampD, our process produces uniform pellets and ensures high performance and quality, with low investment and operating costs, as well ...