US6241808B1 - Production of iron ore pellets - Google Patents
A process for producing fired pellets by granulating finely-ground iron ore and subjecting the resulting granules sequentially to drying dehydration preheating and firing wherein said process...
Taconite Mining and Processing Industry Profile
Cconcentrating of the iron ore by magnetic separation or flotation; Cpelletization by wet tumbling with a balling drum or balling disc; and. Cindurating using a vertical shaft furnace straight grate or grate/kiln and material handling (transfer pellet cooling) of the indurated pellets.
SPONGE IRON PRODUCTION FROM ORE -COAL COMPOSITE PELLETS IN ...
rotary kiln process using calibrated ore and non coking coal. However Rotary kiln process suffers from serious limitations like low productivity and pollution. In this respect fixed bed Tunnel kiln furnace are evolving as an alternative to Rotary kiln process. Iron ore fines and the low grade beneficiated iron ore cake are directly used for manufacturing of sponge iron in tunnel kilns.
PLASMA HEATED FURNACE FOR IRON ORE PELLET INDURATION
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 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 industrial pollution of the atmosphere.
iron ore pellets manufacturing process by tunnel kiln
tunnel kiln for sponge iron production. Process flow of sponge iron production line: In the industry 3 tunnel kiln method of sponge iron process iron ore pellets etc Our tunnel kiln's reaction time.
Iron ore pellets and their production Part 2 - YouTube
The presentation describes different types of pelletization processes
US9752206B2 - Plasma heated furnace for iron ore pellet ...
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...
Iron Ore Pellatisation Application in Steel Industry – Grate ...
The Green pellet thus obtained is taken to an indurating furnace having heat resistant perforated cast iron traveling grate bars arranged on two rotating drum to make an end less belt. Green Pellet is evenly placed at the feed end & burners are arranged opposite each other on longitudinal sides of the preheating & firing zone.
Iron Ore Pellets and Pelletization Process – IspatGuru
Pelletizing of iron ore was started in the 1950s to facilitate the utilization of finely ground iron ore concentrates in steel production. For the pelletizing of iron ore there are two main types of processes namely the straight travelling grate (STG) process and the grate kiln (GK) process. In the STG process a stationary bed of pellets is transported on an endless travelling grate through the drying oxidation sintering and cooling zones.
Green Pellet - an overview | ScienceDirect Topics
In Grate-Kiln process green pellets are fed on oil or gas-fired endless Straight Grate machine where they are dried and preheated. The preheated pellets are then fed to a rotary kiln where their temperature is raised in oxidizing atmosphere to 1290–1400 °C. In induration ore grains are sintered together with oxidation and slag-forming bonds.
Iron Ore Agglomeration Processes and their Historical ...
Pelletizing of iron ore is a method of Swedish origin patented in 1912 by AG Andersson (Yamaguchi et al. 2010). The process was developed in the USA in the 1940s and the first commercial plant started operation in Babbitt Minnesota in 1952. The first iron ore pellet plant of the grate-kiln type was established at Humboldt Mine Michigan in 1960.
US Patent for Plasma heated furnace for iron ore pellet ...
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 industrial pollution of the atmosphere.
CFD-modelling of the SNCR process in iron ore grate-kiln ...
In order to make a clear evaluation of overall energy requirement for the production systems of directly reduced iron through pellets from iron ore powders exergy analysis was applied to the two ...
Iron Ore Pellets: North America BF and DR Grade Supply and ...
Iron Ore Pellets: North America BF and DR Grade Supply and Quality Dr. Joseph J. Poveromo Materials & Ironmaking Global Consulting Bethlehem PA [email protected] 3rd COREM Symposium on Iron Ore Pelletizing Sept. 29 – Oct. 2 2013 Quebec City
While Travelling Grate (TG) process developed by Outokumpu formerly Lurgi Germany accounts for about 56% of the world capacity GrateKiln (GK) process developed by Metso Minerals (Formerly Boliden-Allis / Allis Chalmers USA) accounts for about 33 % . Both TG and GK process have flexibility of operation using various type of iron are like Magnetite Haematite magnetite/ Haematite etc. with capacity varying from small scale to very large scale.
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