DRI production | International Iron Metallics Association
Direct reduction of iron is the removal of oxygen from iron ore or other iron bearing materials in the solid state, ie without melting, as in the blast furnace The reducing agents are carbon monoxide and hydrogen, coming from reformed natural gas, syngas or coal Iron ore is used mostly in pellet ,
Iron ore concentrates must be coarser than about No 10 mesh to be acceptable as blast furnace feed without further treatment Finer concentrates are agglomerated into small "green" pellets, which are classified as either acid pellets or flux pellets Acid pellets are produced from iron ore and a binder only, and flux pellets are produced by
Moving behavior of pellets in a pellet shaft furnace ,
Abstract The downward moving behavior of pellets in a 8 m 2 pellet shaft furnace with an internal vertical air channel and a drying bed was studied by means of a visualized model (1:15) and a top model (1:1) The visualized model experiment shows that the downward movement of pellets can be regarded as plug flow approximately inside the furnace except for the lower region of cooling zone due .
straight grate iron ore pellitizing technology | Solution ,
Nov 21, 2012· Mathematical model for a straight grate iron ore pellet induration process of industrial scale , University of Technology, PO Box 11365-9466, Tehran, Iran, , Grate-Kiln Process – Iron Ore Pelletising – Caiman Corporation There are two major processes for the production of Iron ore pellets: Straight Grate , Grate-Kiln technology
When this CO-rich gas is drawn up through the shaft and used to prereduce the incoming oxide, the supply of CO from the reaction zone in the arc furnace will be diminished according to the degree of prereduction that has been achieved in the shaft Iron oxide pellets were smelted both with and without the shaft furnace in operation to evaluate .
This stockpile of iron ore pellets will be used in steel production Iron ores are rocks and minerals from which metallic iron can be economically extracted The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, or deep purple to rusty red The iron is usually found in the form of magnetite (Fe 3 O 4, 724% Fe), hematite (Fe 2 O
Mobarakeh Steel Company (MSC, Persian: , MSC’s iron ore (raw material) comes from mines in Golgohar and Chadermaloo (Kerman and Yazd provinces) , At the Direct Reduction plant, pellets are charged in Midrex shaft furnaces after misco-grain screening (less than 5mm)
In Iron & Steel plants COMPANY RANKING IN IRAN : 269 MMTE has obtained LICENSE of MIDREX DRI TECHNOLOGY from , UBF FABRICATION OF DRI PLANT SHAFT FURNACE MMTE Manufacturing Shop WWWMMTEIR , Iron ore Pellets , minimum 67 % Total Fe .
Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel—98% of the mined iron ore is used to make steel Indeed, it has been argued that iron ore is "more integral to the global economy than any other commodity, except perhaps oil "
EFFECT OF SIZE DISTRIBUTION AND WATER CONTENT ON ,
With the fast-growing pellet industry and increasing use of iron ore pellets in the charge for ironmaking, pelletisation of iron ore fines has turned out to be an important area of metallurgical studi Pellets now form a substantial part of the charge in blast furnaces and may be as high as 30% in some cas It has
Iron ore and DRI – An old and new conference topic
EU's iron ore production and is a major suppli-er of DR grade ore pellets to the MENA (Middle East North Africa) region, said their deliveries in 2012 totalled 263Mt of which pel-lets – both blast furnace and DR grade – were 220Mt They supply about 40% of the EU's annual blast furnace pellet consumption On the
Iron Furnace Problem What is the porosity distribution in ,
What is the porosity distribution in the iron ore hopper? KSG 2011 Figure 1: Simpli ed diagram of the shaft furnace 1 Problem Description Mixtures of solid particles can separate or segregate while handled or processed in an iron furnace, and this often results in costly quality control problems In
In the ironmaking process, the blast furnace or direct-reduced iron (DRI) plant will typically use iron ore pellets, which are created when iron ore fines are agglomerated and heated using a rotary kiln Many producers use a traveling grate and rotary kiln to heat the pellets to temperatures as high as 800°C to 900°C in the preheat zone and .
The quality requirements of pellet, such as physical, chemical and metallurgical specifications, depend on each ironmaking furnace and thoserequirements influence the operation ofthe iron ore pelletizing plant The idea of rolling moist fine ore in a drum to form balls and then drying and firing it was first
shaft furnace technology from china for iron ore pellet
By1350 BC to 1100 BC, the production of ferrous metals from iron ore had , of ironore, coke must also physically support the burden in the blast furnace shaft and, furnace to reduce composite pellets containing both iron-oxide fines from oreor.
Vale is the world’s biggest producer of iron ore and pellets, raw materials essential to the manufacture of steel Iron ore is found in nature in the form of rocks, mixed with other elements By means of various industrial processes incorporating cutting-edge technology, iron ore ,
US miner Cliffs sees global iron ore pellet shortage, HBI ,
2 days ago· Cliffs can stay focused entirely on the North American markets, and tap a new segment of electric arc furnace (EAF) customers, while current iron ore prices and pellet premiums keep the window open for exports out of the Great Lakes, he sa "I have two options, supply HBI, or export HBI and pellets," Goncalves sa
Almost all iron ore is used in blast furnaces to make pig iron, which is the main material for steelmaking Small amounts of iron ore are used in other applications such as coal wash plants and cement manufacturing Iron is the most used metal accounting for about 95% of total metal tonnages produced worldwide Hematite is an iron oxide mineral .
Midrex is direct reduction process using a shaft-reactor and is developed by Midrex/Kobe Steel Iron ore pellets, lump iron ore or a combination of pellets and ore are reduced in a vertical shaft or reduction furnace to metallic iron by means of a reduction gas The reducing gas is produced from a mixture of natural gas and recycled gas from the reduction furnace
Direct Reduced Iron and its Production Processes – IspatGuru
Mar 16, 2013· Major DRI production processes are either gas based or coal based Feed material in a DRI process is either iron ore sized to 10 to 30mm or iron ore pellets produced in an iron ore pellet plant In the gas based plant the reactor, the reduction reaction takes place is a shaft furnace
Numerical investigation of nonisothermal reduction of ,
School of Mechanical Engineering, Sharif University of Technology, Azadi St, PO Box 11365-9567, Tehran, Iran Dat , Sakawa M and Kondo S 1976 Mathematical model of the shaft furnace for reduction of iron ore pellet , Sakawa M and Kondo S 1976 Analysis of operating conditions of shaft furnace for reduction of iron ore pellet by .
Shaft Furnace - an overview | ScienceDirect Topics
D Zhu, in Iron Ore, 2015 16313 Raw material requirements The MIDREX® shaft furnace is designed to operate with a combination of pellets and lump ores virtually in any proportion This allows the plant operator to maximize productivity at the lowest cost
Iron ore and pellet – Industrial and Mining Company ,
Iron ore and pellet Novinfaravaran is the IRAN’s biggest producer of iron ore and pellets, raw materials essential to the manufacture of steel Iron ore is found in nature in the form of rocks, mixed with other elements By means of various industrial processes incorporating cutting-edge technology, iron ore is processed and then sold to .
State of direct reduction and reduction smelting processes J Min Met 38 (3 ‡ 4) B (2002) 129 Figure 3 Schematic Review of MIDREX PROCESS  ore or iron oxide pellet solids in the bed, Figure 3 The reducing gas (from 10-20% CO and 80-90% H2) ,
that are charged into a blast furnace include lump ore, sintered ore and pellets The ones charged into an EAF include iron scrap, reduced iron pellets and reduced iron briquett Sintered ore is made by partially melting and sintering coarse iron ore 1 to 3mm in size into products having a ,
Iron ore pelletizing 3 Process flexibility 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 zon Any change in one section effects the residence
In iron processing: Pelletizing ,of firing equipment was the shaft furnace This was followed by the grate-kiln and the traveling grate, which together account for more than 90 percent of world pellet output In shaft furnaces the charge moves down by gravity and is heated by a counterflow of hot combustion gases, but the, Read More