Download scientific diagram | Overall comparison of straight grate (SG) and grate-kiln (GK) pelletization (Mourão, 2012) from publication: Iron ore pelletization | …

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.

In Grate-Kiln process, green pellets are fed on oil or gas-fired endless Straight Grate machine where they are dried and preheated. The preheated pellets are then fed to a rotary kiln where their temperature is raised in oxidizing atmosphere to 1290–1400 °C. In induration, ore grains are sintered together with oxidation and slag-forming bonds.

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 iron ore pelletizing systems combine the best features of both technologies to provide the most modern ...

The pelletisation process consists of grinding and drying or de-watering, balling and induration followed ... are ground and then added to the ore slurry, typically at a level of 3 to 3.5%, before de-watering. In the other process after hot grinding the material is re-wetted in paddle-type ... in 'straight grate' or 'grate kiln' systems ...

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SINTERING AND PELLETISATION OF INDIAN IRON ORES. GRATE KILN PROCESS Process adopts three equipment viz. grate, rotary kiln and annular cooler. Green balls are first dried and preheated on the straight grate followed by hardening in a counter flow manner in rotary kiln and air cooling in an annular cooler The grate has two or more wind boxes to provide for the gas draft

Download scientific diagram | Schematic of the straight grate pelletizing process. from publication: GUIDELINES FOR SELECTING PELLET PLANT TECHNOLOGY | As greater amounts of fine iron ore ...

Taconite Ore Processing – US Environmental Protection Agency. 27 Sep 2012 …. The average iron content of pellets is 63 percent. …. A simplified flow diagram of these processing steps is shown in Figure … (using larger pieces of the ore to grind/ mill the smaller pieces), then to pebble or ball mills. » More detailed.

comparision straight grate versus grate kiln cooler. difference between rotary kiln and straight grate technology grate kiln technology manufacturers in india grate sintering iron pellets grate kiln type furnace or a straight gratekiln iron ore pelletizing plant the aim the pellets are fed into a rotary kiln Drying and preheating processes of iron ore pellets in a A mathematical model of ...

iron ore pellets-Company Profiles, Project, Process ... 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. There are two main processes for producing iron ore pellets: The Grate-Kiln System and the straight grate system. Get More

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. Read More Energy and Environmental Profile of the U.S. Mining Industry 4

process integration tool for an iron ore upgrading process system. Proceeding of the Symposium on Environmental Issues and Waste Management, Bangkok, Thailand, 11-13 Dec 2007 B. Nordgren S, Dahl J, Lindblom B, Wang J. Process integration in an iron ore upgrading process system - analysis of mass and energy flows within a straight grate

Straight Grate Iron Ore Pelletisation Process Diagram. iron ore pelletisation flow chart diagram. Relevance of Iron Ore Pelletisation Industry in iron ore fines through various activities such as beneficiation pelletisation Flow diagram of Traveling Grate process 21 Flow diagram of Grate- Kiln process Bentonite is a binder and facilitates formation of the green balls of …

Danieli Straight Grade Iron Ore Pelletizing Plant - Saber más. Pelletizing Of Iron Or danieli straight grate iron ore pelletizing plant 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 …

sponge iron production by at least 25% with the same quantum of fuel. Pelletisation of Iron ore can be done either by Straight Grate technology or by the Grate Kiln technology. In India, Hematite (Fe2O3) ore is available in abundance compared to Magnetite ore (Fe3O4). Straight Grate technology is widely used with Hematite ore; whereas in the ...

Straight grate, grate-kiln, and shaft furnaces account for approximately 58%, 35%, and 6%, respectively, of world pellet production in 2013 . Therefore, the grate-kiln and straight grate systems are the dominant technologies currently being used in the iron ore pelletizing industry.

Fig 2 Typical schematic diagram of straight grate system. The grate-kiln system depicted in Fig 1 consists of a traveling grate for drying and preheating the pellets to about 1040 deg C, a rotary kiln for uniformly heating the throughput to the final induration temperature of 1315 deg C, and an annular cooler for cooling the product and heat recuperation.

Kishalay Mitra, Sushanta Majumder, Successive approximate model based multi-objective optimization for an industrial straight grate iron ore induration process using evolutionary algorithm, Chemical Engineering Science, 10.1016/j.ces.2011.03.041, 66, …

Beneficiation Pelletisation Iron Making Process Sponge Iron / DRI Steel Making Iron ore Pellets: ... Travelling Grate or Straight Grate Process ... Ceramic balls Green pellets Pellet movement on Disc. Step 1: Production of green balls in a disc/drum where fine grained iron ore with proper size distribution and mixed with a binder (usually ...

straight grate systems are the dominant technologies currently being used in the iron ore pelletizing industry. Figure 15.1 shows the flow sheets …

Iron ore pelletization is an oxidizing process for the agglomeration of fines or ultra-fines (lower than a size of 150 μm) of the iron ore concentrates with a low concentration of gangue. The process involves raw material preparation, green pellet formation, drying, preheating, and firing of green pellets, and cooling of fired pellets to ...

Straight Grate Induration Process For Iron Ore Pelletizing. Grate-Kiln System for iron ore pelletizing - .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 …

Pellet Plant Process Flow Chart With Straight Grate Technology. iron ore pellet plant process flow chart pthese plants flow diagram of traveling grate process 21 flow diagram of grate kiln process the steel plants are Read more grate kiln process supplier in india done either by Straight Grate technology or by the Grate Process and Grate Kiln p ...

There are several iron ore pelletizing processes/technologies available. Some of them are Shaft Furnace Process, Straight Traveling Grate Process, Grate Kiln Process, Cement Bonded Process (Grangcold Process, MIS Grangcold Process, Char process etc. and Hydrothermal Processes, (COBO Process, MTU Process, INDESCO Process) etc.

Fig 2 Typical schematic diagram of straight grate system. The grate-kiln system depicted in Fig 1 consists of a traveling grate for drying and preheating the pellets to about 1040 deg C, a rotary kiln for uniformly heating the throughput to the final induration temperature of 1315 deg C, and an annular cooler for cooling the product and heat recuperation.

Download scientific diagram | Schematic diagram of the straight grate induration process [29]. from publication: Iron Ore Pelletizing Process: An Overview | Pelletization and Iron Ore ...

High grade iron ore less than 10% of the total reserves. ROM iron ore with Fe less than 58 – 60% discarded as waste. ... TYPES OF PELLETISATION PROCESS 1. Grate kiln process 2. ... Green balls are first dried and preheated on the straight grate followed by hardening in a counter flow manner in rotary kiln and air cooling in an

Pelletizing of iron ore produces spheres of typically 818 mm (0.310.71 in) diameter. The process combines agglomeration and thermal treatment to convert the raw ore into pellets with characteristics appropriate for use in a blast furnace. Iron ore pellets are not pressure formed.

The ground iron ore must be pelletized prior to feeding into a blast furnace or DRI plant. With strength and expertise in both straight grate and grate-kiln technologies, Outotec's equipment, parts and services for pelletizing process are designed to increase capacity, reduce fuel and power consumption, and cut maintenance costs.

Schematic diagram of the iron ore pelletization process. Fig. 2. Schematic diagram of straight grate induration process for iron ore pellets. preparation of the green pellets are iron ore, limestone, ben-tonite and Corex sludge. The chemical analysis of the raw material is shown in the Table 1. Iron ore fines and lime-

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The ironmaking process in the blast furnace is a heat and mass transfer process, and the furnace can be divided into different zones according to physical and chemical state of the feed and temperature. Figure 1.1.5 illustrates various zones of the blast furnace and feed distribution and materials flow [13].Corresponding to each temperature interval, typical …