Iron and Steel Manufacturing Industry Description and Practices Steel is manufactured by the chemical reduction of iron ore, using an integrated steel manufac-turing process or a direct reduction process In the conventional integrated steel manufacturing process, the iron from the blast furnace is con-verted to steel in a basic oxygen furnace .
Iron Ore: Sedimentary Rock - Pictures, Definition & More
The primary use of iron ore is in the production of iron Most of the iron produced is then used to make steel Steel is used to make automobiles, locomotives, ships, beams used in buildings, furniture, paper clips, tools, reinforcing rods for concrete, bicycles, and thousands of other items It is the most-used metal by both tonnage and purpose
Beneficiation of Iron Ore - Mineral Processing & Metallurgy
Beneficiation of Iron Ore and the treatment of magnetic iron taconites, stage grinding and wet magnetic separation is standard practiceThis also applies to iron ores of the non-magnetic type which after a reducing roast are amenable to magnetic separation All such plants are large tonnage operations treating up to 50,000 tons per day and ultimately requiring grinding as fine as minus 500 .
ALTERNATIVE BINDERS TO BENTONITE FOR IRON ORE PELLETIZING ,
The most commonly applied one is pelletizing in iron ore industry Originally the pelletizing process was developed in the USA to treat the ultra-fine mineral dressing products obtained from the upgrading of Mesabi ore and has been utilized to provide a blast furnace feed product with Fe grade of about 65% (Ball et al, 1973)
Outotec Traveling Grate Pelletizing is the industry’s leading induration technology for iron ore pellet processing and is designed for a wide range of plant capacities up to 925 million t/a Based on over 60 years’ experience and world-class R&D, our process produces uniform pellets with excellent physical and metallurgical properti
Straight Grate iron ore pelletizing system Principles of operation • In this process, the wet pellets are dried, preheated, indurated, and cooled on a continuous moving grate without intermediate transfers •The process air introduced for pellet cooling is circulated from the cooling zone of the grate in a multi-pass manner to the other process
Pellet Process Uses and Exposures May 2010 - The Iron ,
Pellets are primarily used in blast furnaces and are also used in DR-plants Occasionally pellets are used in the steel process Pellets are stored in bunkers before charging to the blast furnace The mixture of iron bearing materials (iron ore rubble, sinter and/or pellets) and additives (flux material) are known collectively as the "burden"
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
iron ore size for pelletization process - ceulemansnvbe
blast furnace process The iron ore concentrate is now mixed and ready for the pelletizing process Pelletizing A pellet plant contains a series of balling drums where the iron ore concentrate is formed into soft pellets, in much the same manner that one rolls a snowball, to make a pellet about the size of a marble (between 1/4" and 1/2").
The iron ore pelletizing process consists of three main steps: 1 Pelletizing feed preparation and mixing: the raw material (iron ore concentrate, additives anthracite, dolomite and binders are prepared in terms of particle size and chemical specifications, dosed, and mixed together to feed the pelletizing process,
Beneficiation Plants and Pelletizing Plants for Utilizing ,
Beneficiation Plants and Pelletizing Plants for Utilizing Low Grade Iron Ore Tsutomu NOMURA ＊1, Norihito YAMAMOTO ＊2, Takeshi FUJII , Yuta TAKIGUCHI ＊3 ＊1 Technology & Process Engineering Dept, Iron Unit Div, Engineering Business ＊2 Plant Engineering Dept, Iron Unit Div, Engineering Business ＊3 Ironmaking Dept, Kakogawa Works, Iron & Steel Business
US2799572A - Iron ore pelletizing process and product ,
As'applied to iron ores and particularly magnetite, however, pelletizing has not heretofore proven commercially successful despite the great and increasingly urgent demand for an economical iron ore pelletizing process and the resulting numerous efforts by others to discover such a process
Pelletizing technologies for iron ore Outokumpu Technology offers unrivalled solutions for processing iron or These include two leading pelletizing technologies that guarantee high product quality and low operating costs – the Traveling Grate process for plants with large capacities and the Steel Belt process for those with smaller on
What is the difference between pellets and sinter? - Quora
Jun 11, 2017· What is Pelletization? The process of Pelletization helps converting Iron Ore Fines into “Uniform Size Iron Ore Pellets” that can be fed in the blast furnaces or in the DRI kiln (DRI) Why Pelletization? Pelletization is the only answer to a major.
A Look at the Process of Pelletizing Iron Ore for Steel ,
The Pelletizing Process The production of iron ore pellets from fines to finished product can differ based on a variety of factors As such, it’s important to note that the process described here is a generalized approach subject to many variations
How iron is made - material, manufacture, making, history ,
The process of extracting iron from ore produces great quantities of poisonous and corrosive gas In practice, these gases are scrubbed and recycled Inevitably, however, some small amounts of toxic gases escape to the atmosphere A byproduct of iron purification is slag, which is produced in huge amounts
Iron ore pelletizing systems Iron ore fines are agglomerated into pellets and then indurated using a furnace to create iron ore pellets These are typically fed to a blast furnace or DRI plant as part of the process to make steel
Iron Ore Sintering and Pelletizing Capabiliti The Natural Resources Research Institute’s Coleraine Minerals Research Lab is a full service minerals research laboratory with complete capabilities for sintering and pelletizing iron ore on both bench and pilot scale
blast furnace process The iron ore concentrate is now mixed and ready for the pelletizing process Pelletizing A pellet plant contains a series of balling drums where the iron ore concentrate is formed into soft pellets, in much the same manner that one rolls a snowball, to make a pellet about the size of a marble (between 1/4" and 1/2")
Fives brings over 50 years of process experience combined with our industry specific test facility to supply tailor-made solutions that meet the world strictest environmental requirements while improving the availability of the Iron ore pelletizing production lin
Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coal Many ores are suitable for direct reduction
Apr 21, 2014· Iron ore pellets are marble-sized balls of iron ore that are fused with clay for transportation, and used in steel manufacture The process of making pellets from iron ore is called pelletizing The manufacture of steel from a low-grade iron ore ,
The pelleting process starts with a bin (Figure 1, Item 1) in which the mixture of mash is stored From there, the mash will flow by gravity into the pellet mill (Figure 1, Item 2) This machine is usually located on the ground or main work floor level The hot, extruded mash (pellets) flows by gravity into a ,
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 ,
Life cycle energy consumption and greenhouse gas emissions ,
Pelletizing is considered as an art process, which converts the iron concentrates into pellets of even size that can be charged directly into a BF or into a furnace for the direct reduced iron (DRI) production (Pietsch, 2008)Fig 1 shows a schematic diagram of pellet production, which is generally divided into the following four stages: 1
Iron Ore Pelletizing Aids Iron Ore pelletization is a tumble/growth agglomeration mechanism for solid particulates, which must comply with two key points The first point is to reach, during the balling stage, the capillary state without exceeding it The pellets are then called green balls and their strength is due to the liquid bonds .
(PDF) Sample Proposal for an Iron Ore Pelletizing Plant ,
Figure 1: Fired Pellets 2 The Iron Ore Pelletizing Process The required amount of Hematite Iron ore is taken from the stockpiles and fed into the primary crusher The output from the primary crusher is sieved and the undersize is fed into the secondary crusher while the ,
Pelletizing of Iron Ore Concentrates - 911metallurgist
The pelletizing tests conducted on four different iron ore concentrates were intended to provide a wider base for the comparison of the quality of pellets made with extracted peat moss and the conventional method of using bentonite as a binder The generation of the relevant data for these comparisons was planned in two stages, as follows: