Drying And Preheating Processes Of Iron Ore Pellets In A Traveling Grate

Process Integration In An Iron Ore Upgrading Process

task is to dry, fire and cool the iron ore pellets. The direction of the flow of ambient air, gas streams and exhaust gas is marked with arrows in Figure 3. The name and purpose of the different zones are described in Table 1. Table 1. Description of the different zones. UDD – Up-draught-drying DDD – Down-draught-drying PH – Pre-heating

iron processing description ore drying - … Iron Ore Processing for the Blast Furnace ... 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.

MATHEMATICAL MODEL FOR ENERGY SAVING IN

plant scale iron ore pellet induration furnaces is presented. The experiment was performed in such a way that phenomena of heat transfer, drying and coke combustion [8]. K. H. Boss [9] developed a model for straight grate pelletizing process and added higher amounts of coke to iron ore pellets without effecting the quality of fired pellets.

The soft pellets are then delivered to the roller feeder for final removal of the fines, which are also returned to the balling circuits. Now the soft pellets, correctly sized, are delivered to the traveling grate furnace for further drying and preheating. The grate is fired by natural gas.

Travelling Grate For Iron Ore

Straight Grate Induration Process For Iron Ore Pelletizing. Travelling grate in iron ore pelletising. Iron Ore Pellets Iron Ore Iron ore pellets can be made by two different processes the Straight Grate process and the Grate Kiln process The Grate kiln system consists of three machines a traveling grate a rotary kiln and an annular cooler which heats hardens and cools the ore respectively.This ...

Metso Metso Iron Ore Pelletization Iron Ore. Grate-Kiln iron ore pelletizing system Principles of operation Traveling grate-Pellets are dried and partially indurated through multiple cross flow process zones updraft drying downdraft drying tempered preheat and preheat strengthening pellets for processing in rotary kiln. Spongeiron Shakambhari Group

Method Of Processing Ore On A Traveling Grate

Nov 24, 1995 As an example, iron ore which has been separated from the earthen substances with which it occurs in the mine, is commonly prepared for feed to a blast furnace by forming it into green pellets then feeding the pellets so formed onto a traveling grate machine where the pellets are dried, preheated, and indurated at a high temperature.

The working process of travelling grate is: sieve the pressed raw ball containing the mixture of iron ore powder by screening machine, put the qualified ball into the grate for roasting, dry and preheat the ball to produce certain strength, and then send it to the rotary kiln through the kiln tail chute for roasting, so as to meet the quality ...

PDF Dynamic Simulation Of Pellet Induration Process In

Abstract A mathematical model of pellet induration process in the straight-grate system is presented. The important physical and chemical phenomena known to affect the heat and mass transfer in the process have been taken into account in the formulation of the model. These include heat transfer between gas and pellet, gas flow, evaporation and condensation of moisture, oxidation of magnetite ...

Grate is a kind of thermal equipment working at high temperature, and its main parts are made of heat-resistant alloy steel. The working mode is to distribute the iron pellet on the grate bed running at a slow speed, the waste heat from the ring cooler and the hot air from the rotary kiln are used to dry, preheat and oxidize and consolidate the pellets, and then directly send it to the rotary ...

Ingredients For Pelletising Process Of Iron Ore Wiki

Iron ore pelletizing434 Кб. 2 Iron ore pelletizing Process flexibility There are two main processes for producing iron ore pellets: The Grate-Kiln system and the straight grate system.The rotary kiln is a downwards sloping cylinder from 4 Iron ore pelletizing the traveling grate to the annular cooler.

Dec 03, 2012 The most commonly employed method of heat-hardening, such as described for example in U.S. Pat. No. 3,947,001 issued to Leighton, is of disposing the iron ore pellets on a travelling grate to carry the pellets through a tunnel-like enclosure where they are progressively subjected to drying, preheating, firing, after-firing and cooling.

Iron Ore Straigh Grate Pelletization Equipment Process Fans

Iron Ore Straigh Grate Pelletization Equipment Process Fans. Grate Kiln process was then a first of akind application for Thermax despite having supplied numerous Air pollution control equipment on Straight Grate Pellet plant The challenge in this case was the high dust load generated due to churning of pellet inside the

Drying and preheating processes of iron ore pellets in a traveling grate ... (12) (3) () SpringerLink. Abstract: 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 ...

Iron Ore Pellets And Pelletizing Processes PDF Iron

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. It is the process of converting iron ore fines into Uniformed Sized ...

Home / iron pellets processing grates. Grate, Process flexibility Pelletization process 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 zonCFD model of a straight, The model may be used to discover ...

Rotary Kiln And Straight Grate Technology

Introduction to Iron ore Pellets and Pelletizing processes. Feb 23 2013 Grate kiln process The grate kiln process was developed by former Allis Chalmer and the first plant on this technology was constructed in 1960 In the grate kiln process Fig 3 the traveling grate is used to dry and preheat the pellets Material moves on straight travelling ...

Process Integration In An Iron Ore Upgrading Process. Process integration in an iron ore upgrading process system Schematic description of a model based on reMIND. task is to dry, fire and cool the iron ore pellets. The direction of the flow of ambient air, gas streams and exhaust gas is marked with arrows in Figure 3. The name and purpose of the.