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Feb 23, 2013· Iron ore pellets and Pelletizing processes. 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 oval/spherical lumps of 8-16 mm in diameter by a pelletizer and hardening the balls by firing with a fuel.
Novel Drying Process Assisted by Microwave to Iron Ore Pelletizing 3 2.3 Drying experimental procedure The pot grate furnace has the objective of simulate conditions of an induration process. The main constituents of the furnace are:1 the combustion chamber where a burner containing LPG (liquefied petrol gas), oxygen and
Mar 21, 2015· Understanding Pellets and Pellet Plant Operations. Pelletizing is an agglomeration process which converts very fine grained iron ore into balls of a certain diameter range (normally 8mm to 20 mm, also known as pellets. These pellets are suitable for blast furnace and direct reduction processes.
Grate process, as showed in Figure 1. The Grate Kiln process is used at the Vale plant in Oman. Drying and preheating steps are also performed in a traveling grate with hot air flowing through a bed of pellets. The high-temperature step is done in a rotary kiln and temperature cycle is more homogeneous for different pellets.
Drying and preheating processes of iron ore pellets in a traveling grate. A mathematical model of drying and preheating processes in a traveling grate was presented based on the laws of mass, momentum, heat transfer, and drying semiempirical relations. A field test was. GrateKiln System for iron ore pelletizing Automation PDF
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 9.25 million t/a. Based on over 60 years’ experience and world-class R&D, our process produces uniform pellets with excellent physical and metallurgical properties.
A Dynamic Mathematical Model of the Complete Grate/Kiln Iron-Ore Pellet Induration Process J.A. THURLBY Induration (drying and hardening) of iron ore pellets is an energy-intensive feed preparation step for both the blast furnace and direct reduction routes to iron. It is commonly carded out by a 'grate/kiln' process.
Traveling Grate Dryer For Iron Ore Pelletizing Plant . Traveling grate is an equipment which uses exhaust heat and hot air from a annular cooler &rotary kiln to dry green iron pellets, preheating, oxidation of consolidation and then directly feed into the rotary kiln.The powder from the traveling grate is collected to the hopper and reused. Get ...
Modeling and simulation of iron ore pellet drying and induration process with accurate bed void fraction calculation Shuai Tana, ... traveling grate to form a bed of 180 mm x 220 mm depth ... preheating zones, the dry pellets are preheated before entering into the kiln. In the first preheating zone, pellets ...
Pelletizing is the process of converting Iron Ore Fines into “Uniformed Sized ... Preheating, Induration, Drying, preheating, Induration, Cooling Cooling Cycle are carried out in a single unit. cycles are carried out in different units. ... temperature. abrasion from pellets. Modular design of traveling grate allows All repairs of the grate ...
process of separating the iron from the non-iron material. The magnetic iron ore is then ... to the traveling grate furnace for further drying and preheating. The grate is fired by natural gas. From this point, the pellets are charged into the large rotary kiln where they are heat- ... A trainload of iron ore pellets
Traveling Grate Pelletizing Plant; Outotec® Traveling Grate Pelletizing Plant. Get uniform pellets with excellent metallurgical and physical properties. Outotec's traveling grate pelletizing plant is the industry's leading induration technology for iron ore pellet processing for …
al.  also developed a mathematical model for the drying and preheating phenomena of iron ore pellets in a traveling grate based on mass, momentum and heat transfer laws, and semi-empirical correlations. The effect of the pertinent parameters including the mean diameter of pellets, the grate
Development and application of thermal mathematical model of iron ore pellet bed in grate Article in Journal of Shanghai Jiaotong University (Science) 16(3):312-315 · June 2011 with 76 Reads
The process of mining low-grade iron ore, or taconite, requires massive resources.Heavy industrial mining equipment, expansive mines, and a skilled labor pool are all required. Some of the equipment includes diamond-bit rotary drills, hydraulic shovels and loaders, water-wagons, production trucks and heavy duty conveyors.
Pelletizing technologies for iron ore Outokumpu Technology offers unrivalled solutions for processing iron ores. 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 ones.
4 Iron ore pelletizing Energy efficiency The 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.
Travelling Grate Process Traveling grate process, originally designed for sintering, was modified to make it suitable for drying, preheating, firing and cooling pellets in one single unit. However, the individual thermal zones are separate. These zones could be designed to suit the ore types by controlling flow rates and temperatures.
grate furnace kiln taconite - stablesbusinessparkcoza. These are typically fed to a blast furnace or DRI plant as part of the process to is the only supplier of both Straight Grate and Grate Kiln pellet plants the making of iron and steel SEAISI the very large deposits of iron bearing rock called "taconite" which underlie much of the shaft furnace, rotary kiln or grate system similar to a sinter .
A process of hard-burning iron ore pellets comprising hematite, carbonaceous solids and heat-consuming fluxes on a traveling grate under oxidizing conditions wherein hot oxygen containing gases are passed through a pellet charge bed in a burning zone of the traveling grate to produce hematite pellets, wherein part of the heat required for hard ...
The schematic figure of grate–kiln–cooler process for iron ore pellets is shown in Fig. 2. Processing of green pellets prepared from pelletizer is accomplished by three equipments: traveling grate (drying and preheating), rotary kiln (roasting) and circular cooler (cooling).
Drying and preheating processes of iron ore pellets . A mathematical model of drying and preheating processes in a traveling grate was presented based on the laws of mass, momentum, heat transfer, and drying semiempirical relations. A field test was.
After feeding the pellets to the traveling grate, the unit operations of green ball drying, concentrate dehydration, partial calcination, and partial induration are performed on a traveling grate, whereupon heat transfer occurs in zones of the grate from the cross flow of process gas (hot air) repeatedly passed through the pellet bed in a ...
Traveling grate is an equipment which uses exhaust heat and hot air from a annular cooler &rotary kiln to dry green iron pellets, preheating, oxidation of consolidation and then directly feed into the rotary kiln.The powder from the traveling grate is collected to the hopper and reused.
A mathematical model of drying and preheating processes in a traveling grate was presented based on the laws of mass, momentum, heat transfer, and drying semiempirical relations. A field test was systematically carried out in a traveling grate.
drying of ore - limarohouse.co.za. Drying and preheating processes of iron ore pellets A mathematical model of drying and preheating processes in a traveling grate was presented based on the laws of mass, momentum, heat transfer, and drying