iron ore grate kiln pellet plant process

GUIDELINES FOR SELECTING PELLET PLANT

Figure 6. Schematic of Grate-Kiln pelletizing process (also known as the Rotary-Kiln Process). 3 TECHNICAL CHALLENGES 3.1 Iron Ore Mineral – Magnetite vs. …

Pelletizing - LKAB

As LKAB has two different types of pelletising plant – straight grate and grate-kiln plants – the drying process varies slightly. In Malmberget's two pelletizing plants, the entire process takes place on an endless conveyor belt. In Svappavaara's and Kiruna's pelletizing plants, the process takes place in three different machine units ...

A dynamic mathematical model of the complete grate/kiln ...

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 carried out by a 'grate/kiln' process. A mathematical model of the process is described, in which mechanistic models of the grate furnace, kiln, and cooler are linked to enable simulation of the entire process.

Mathematical models and expert system for grate-kiln ...

Mar 29, 2012· Grate process is an important step in grate-kiln pellet production. However, as a relatively closed system, the process on grate is inaccessible to direct Mathematical models and expert system for grate-kiln process of iron ore oxide pellet production (Part I): Mathematical models of grate process | SpringerLink

Iron ore pelletisation plant, using the grate kiln process ...

Iron ore pelletisation plant, using the grate kiln process We offer iron ore pelletisation plants from a reputed manufacturer in China, based on the grate kiln technology. The plants are available in capacities from 1,00,000 tons to 1,20,000 tons per annum.

SAFETY GUIDELINES FOR IRON & STEEL SECTOR MINISTRY …

or as part of integrated steel plants. 3. PROCESS: Pellet Plant produces Pellets using Iron ore and additives such as limestone, bentonite, coke, anthracite coal, quartzite which are passed through balling disc/drum and the green pellets so formed are passed through a furnace either straight grate or rotary kiln to produce High Grade Pellet ...

Rotary kilns - Outotec

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 zones. Any change …

Pellets | The Hira Group

The mixed material is subjected to the green balling and further to the Indurating Grate, Kiln-Cooler process where the drying, pre-heating, firing and cooling takes place to complete the entire Induration process. Our final fired Iron Ore Pellet acquires the best techno commercial and required physico-metallurgical properties for Direct ...

GIIC :: PROCESS

The plant imports iron ores, the primary raw material, mainly from Brazil. The Grate-Kiln technology is used for pelletizing the iron ores. As part of pelletizing process, the ores undergo drying, grinding, balling and indurating process stages. Natural gas is used as fuel. Quality of pellets produced is checked at every process stage, to ...

Pelletization - an overview | ScienceDirect Topics

Jan 01, 2012· The process to harden pellets by heating them up to the sintering temperature is called induration. There are three induration processes: Grate-Kiln, Straight Grate, and Vertical Shaft furnace, of which the first two are dominating whereas the shaft furnace is retreating. Figure 1.1.11 illustrates a typical pellet firing process [22].

CFD analysis of an induration cooler on an iron ore grate ...

Iron ore pellet induration The thermo-fluid analysis comprised the development of comprehensive three dimensional computa- Computational fluid dynamics Computational modelling tional models of gas flow through the cooler coupled with the heat transport and exchange with the cool- …

Grate kiln pelletizing plant - Outotec

Outotec is the original technology supplier for Grate-Kiln systems having acquired the technology from Allis-Chalmers. These plants typically produce pellets of a more consistent quality at a lower cost than other types of pelletizing systems. Outotec has designed and supplied the most modern and largest grate-kiln systems in the world.

Iron Ore Pellets and Pelletization Process – IspatGuru

Nov 26, 2014· Iron Ore Pellets and Pelletization Process. 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.

OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION …

day. The details of pilot plant experiments using various types of ore lumps, heat hardened and green pellets with non-metallurgical coals as solid reductant are presented. ROTARY KILN—SOLID REDUCTANT PROCESSES 1. Krupp Sponge Iron Process The Krupp. Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets ...

Outotec to deliver India's first large scale Grate ...

Apr 08, 2021· Outotec to deliver India's first large scale Grate-Kiln iron ore pellet plant Posted by Daniel Gleeson on 8th April 2021 Outotec has signed a contract with an Indian customer for the supply of a large capacity Grate-Kiln pellet plant in the State of Odisha, India.

Grate-Kiln pellet plant Archives - International Mining

Apr 08, 2021· 8th April 2021 Comminution of minerals, Mining equipment, Mining services, Steel and iron ore Grate-Kiln pellet plant, India, Iron ore, Jari Ålgars, Outotec, Odisha, pellets Daniel Gleeson Outotec has signed a contract with an Indian customer for the supply of a large capacity Grate-Kiln pellet plant in the State of Odisha, India.

Introduction to Iron ore Pellets and Pelletizing processes ...

Feb 23, 2013· Fig 2 Flowsheet of straight travelling grate process. 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.

Energy and exergy analyses of a mixed fuel-fired grate ...

May 01, 2011· So, it is necessary to grind the low-grade iron ores to finely ground iron ore concentrates and to produce iron ore pellets. Further, the pelletizing process can produce iron ore pellet not only for BF process but also for non-BF one (such as DRI process). In fact, there are three kinds of pelletizing process: the grate–kiln–cooler (GKC ...

Grate Kiln For Sale – Grate Kiln System | AGICO Grate Kiln ...

Grate kiln for sale! The grate kiln system is composed of three major pieces of equipment: traveling grate, rotary kiln, and annular cooler. It is widely applied in iron ore pelletizing plants, chemical plants, and other industries. AGICO offers high-quality iron ore pelletizing equipment.

Pelletizing Process

iron ore. His process involved grinding taconite to remove gangues and upgrading the iron ore (i.e., an ... used by many plants. A grate-kiln-cooler system consists mainly of a grate, a kiln and a cooler, ... Pellet quality 1 Grate-Kiln-Cooler process enables all pellets to …

Grate Kiln System

Oct 14, 2018· The GRATE-KILN System has changed significantly in design concept since the first systems were commissioned for Cleveland Cliffs Iron Company in the early 1960's through the most recent startup of the LKAB KP-79 plant in Kiruna, Sweden in 1981. Initial GRATE-KILN plants were designed with no heat recuperation systems and typically consisted ...

The Deposit Formation Mechanism in Coal-Fired Rotary Kiln ...

The deposit-forming problem is one of the main bottlenecks restricting the yield and production benefit of iron ore pellets produced by coal-fired rotary kilns. In order to implement measures to ensure the efficient production of pellets by coal-fired rotary kilns, the mechanism and influencing factors on the deposit formation were reviewed.

Traveling Grate Pelletizing Plant - Outotec

Outotec's traveling grate pelletizing plant is the industry's leading induration technology for iron ore pellet production for a wide range of plant capacities. Based on over 60 years' experience and world-class R&D, our process produces uniform pellets and ensures high performance and quality, with low investment and operating costs, as well ...

Mathematical models and expert system for grate-kiln ...

Jun 03, 2012· Rotary kiln process for iron ore oxide pellet production is hard to detect and control. Construction of one-dimensional model of temperature field in rotary kiln was described. And the results lay a solid foundation for online control. Establishment of kiln process control expert system was presented, with maximum temperature of pellet and gas temperature at the feed end as control cores, …

Initial stage of deposit formation process in a coal fired ...

Jun 15, 2018· The preheated pellet powder, deposit sample and coal were provided by an iron ore pellet plant in China. In the grate-kiln plant, the grate has a length of 56 m and a width of 4.5 m, the diameter of the kiln is 6.1 m and its length is 40 m.

Understanding Pellets and Pellet Plant Operations – IspatGuru

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 …

Iron ore pelletizing - Outotec

Outotec is the only supplier in the world that has both the Straight Grate and the Grate Kiln process for pelletizing. We can help our customers to determine which process is the best for their ore, fuel and pellet requirements. Our systems combine the best features of both technologies to provide the most modern plant and to produce ...

Traveling Grate For Sale - Traveling Grate Pelletizing ...

The traveling grate is a kind of thermal equipment, used for drying and preheating green pellets in iron ore pelletizing plants. AGICO offers high efficiency and long service life traveling grates with an output from 0.3 million tons per year to 4 million tons per year.

Modelling of heat recovery in LKAB's grate-kiln process

These two zones serve to increase the temperature of the pellets prior to the kiln, and here the main part of the oxidation to hematite takes place [9]. Oxidation of the pellets releases a large amount of heat – this is the main heat source in the process[5]. The heated pellet bed then enters the rotary kiln, shown schematically in Figure 2.2.

Kobe Steel provides license to FL Private Limited ...

Apr 23, 2014· The Pelletizing System is a grate-kiln process where iron ore pellets undergo heat treatment in two stages. Iron ore and binding agents are ground and formed into "green balls," the unfired pellets. The green balls are sent to a traveling grate where they are dried and preheated in the preheating furnace.

Pelletizing - LKAB

Jun 15, 2018· The preheated pellet powder, deposit sample and coal were provided by an iron ore pellet plant in China. In the grate-kiln plant, the grate has a length of 56 m and a width of 4.5 m, the diameter of the kiln is 6.1 m and its length is 40 m.

CONTRIBUTIONS TO THE TECHNOLOGY COMPARISON …

The grate-kiln process, which has been inspired from furnaces designed in the ... Relation between CCS and induration temperature for different type of iron ore [5] While pellets made of magnetite develop a sufficiently high strength at lower ... processing of hematite in grate-kiln plants, e.g. in Bahrain Steel, Vale Sohar or Tilden.

Predictive models and operation guidance system for iron ...

Aug 04, 2015· Traveling grate–rotary kiln process has the advantages such as large handle capacity, multiple fuel capacity and good adaptability to various materials, and it has become a major process of producing iron ore pellets in the domestic recently. Download : Download full-size image; Fig. 1. Pig iron and iron ore pellet production in past ten years.

Energy and exergy analyses of a mixed fuel-fired grate ...

So, it is necessary to grind the low-grade iron ores to finely ground iron ore concentrates and to produce iron ore pellets. Further, the pelletizing process can produce iron ore pellet not only for BF process but also for non-BF one (such as DRI process). In fact, there are three kinds of pelletizing process: the grate-kiln-cooler (GKC), shaft ...