2. Pelletisation Process Pellets required for the present study were collected from a commercial straight-grate pellet plant of 3 Mt/year capac-ity. Production of iron oxide pellets from iron ore fines in-volves different operations like drying of ore fines to re-move the moisture and grinding to get the required fine-ness.
Dec 05, 2008· Description of induration process in straight-grate machine. Fig. 1 depicts schematic of a typical straight-grate induration system. The grate bars fixed on a moving strand are first covered with a layer of burnt pellet, known as hearth-layer. The green pellets containing 7 to 9 wt.% free moisture and 10 to 14 mm in size are then fed onto this ...
systems are used by many plants along with straight grate systems. Table 1 compares a grate-kiln-cooler system and a straight grate system. Raw material Balling disc Green ball Comments Straight-Grate Grate-Kiln-Cooler No. Items Pellet quality 1 Grate-Kiln-Cooler process enables all pellets to be uniformly and adequately heat-hardened by
'Grate Kiln' process was then a 'first- of- a-kind' 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 …
Oct 30, 2020· This solution is based on the well-proven travelling-grate pelletizing process; however, the circularly designed induration furnace greatly reduces the footprint of the pelletizing plant. Overall space requirements for CPT are comparably less than those needed for a conventional pellet plant.
process flow chart of straight grate technology of pellet ...Llet Plant Process Flow Chart With Straight Grate . straight grate iron ore pelletisation process diagram. iron processing Britannica. iron processing Use of a smelting process to turn the ore into a form from which required malleable iron, which until then had been made directly in a ...
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
Mar 21, 2015· 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.
Pellet Plant Process Flow Chart With Straight Grate Technology. Iron Ore Pellet Plant Flow Chart. Pellet plant process flow chart with straight grate flow chart of iron ore pellet plant processGet in Touchiron ore processing flow chart YouTube Aug 25, 2016 This is a simple video slideshow, if you.
Oct 14, 2018· The seal design intent is to prevent the flow of ambient air into the process, which dilutes process gas temperatures and restricts the flow of cooling air through the pellet bed. Coal Firing . The GRATE-KILN System significantly reduces pellet production costs by utilizing coal in place of more expensive liquid or gaseous fuels.
Jan 01, 2012· A full-scale plant trial of the substitution of a specific organic binder for bentonite was conducted in the company's straight grate pellet plant in Quebec, which produces 9.3 Mtpa of pellets, 36% of which are used as feedstock for the DR process. The results of the full-scale pellet plant trial are given in Table 15.13.
The Pellet Plant was designed and constructed by DRAVO - LURGI with a straight grate ... are separated by size using the double deck screen, and are sent to the induration machine. ... uniformity of criteria in the use of established procedures.
straight grate due to the absence of any tumbling action, but straight grate pellets tend to be dustier than grate-kiln pellets. Another factor contributing to dust generation in the straight grate is the use of a hearth layer fraction, which, while being recycled, tends to generate more dust 2.3.2 BED HEIGHT AND PRESSURE DROP
Straight grate induration machine for hematite. Working area – 189 m Construction of pelletizing plant no.3 with straight grate induration machine "МОК-592М". Working area – 592 m Pallets 4.0х1.5 Reconstruction of straight grate induration machine Lurgi-278 …
Mar 05, 2020· 0.6 mtpa pellet plant.For more details,Visit us at us at : [email protected] / [email protected] give us a Whatsapp/Normal ca...
sold as Pellet Fines [also known as Pellet Screenings or Pellet Chips] e.g. as feedstock for sinter plants. 1.3 Charging the blast furnace/ BOS plant 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 straight travelling grate consists of a horizontal furnace divided in zones through which a grate moves slowly through each zone,, exposing the pellet bed to a progressive increase in temperature. ... improving the energy efficiency of the process. The grate is composed of a series of pallet cars rolling on wheels and rails on which the ...
The plants are available in capacities from 100,000 tons to 1,200,000 tons per annum. The Chinese company has already supplied 8 pellet plants in India. In the grate kiln process, a chain grate system is used for drying & pre-heating the green balls to be fed into the rotary kiln, where they are indurated. The pellets are finally cooled in a ...
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 ...
May 11, 2021· Grate bars used in straight grate iron ore pelletizing plant (with a grate area of 768 m 2 and 6 MTPA rated capacity) of Tata Steel Limited, Jamshedpur, India, were failing prematurely during the service. In view of this, a dedicated study specific to the industrial pellet plant operation on the grate bar has been performed.
Pelletization processes - Currently, Straight Traveling Grate (STG) Process and Grate Kiln (GK) Process are more popular processes. Recently, a new technology called Circular Pelletizing Technology (CPT) has been developed and the world's first CPT plant has been set up in Odisha (India).
This is the first small scale straight grate pellet plant and commissioned in record time of 18 months. Presently, takes care of Conceptualization, Plant Philosophy finalization, Basic and Detailed Engineering of Pellet Plant & Beneficiation Plant, Steel making division and Power Plants. Companies Served / Assignments : JSW & VT CORP PVT LTD.
Commissioning of Straight grate Pelletisation Pilot Plant with ... below mentioned pellet pilot plant on turn key basis: ... I-1 PROCESS FANS 19 I-2 PROCESS GAS DUCTING 19 I-3 ELECTROSTATIC PRECEPITATOR 19 I-4 REFRACTORY & INSULATION 19-20 J PRODUCT HANDLING SECTION 21 K WATER SECTION 22 ...
Drying and pre-heating increase the strength of the pellets. In the process, large amounts of energy are generated when the magnetite oxidised to form haematite, which reduces the energy requirement by 60 percent. As LKAB has two different types of pelletising plant – straight grate and grate-kiln plants – the drying process varies slightly ...
The straight grate technology has been proved for all ore types and has achieved higher unit capacity, while the grate-kiln process is more flexible with respect to fuel type and produces pellets ...
straight grate pellet process. Fig 2 Straight Travelling Grate Process Typical flow sheet The Grate Kiln Process was developed by Allis Chalmer and the first plant on this technology was constructed in 1960 In the GrateKiln process Fig 3 the traveling grate is used to dry and preheat the pellets. Rotary Kiln an overview ScienceDirect Topics
Mathematical models of straight-grate pellet induration processes have been developed and carefully validated by a number of workers over the past two decades. However, the subsequent exploitation of these models in process optimization is less clear, but obviously requires a sound understanding of how the key factors control the operation. In this article, we show how a thermokinetic model of ...
Jul 11, 2018· The most widely used industrial processes for pellet induration are the straight grate and the grate-kiln. The straight grate process is composed of a single furnace where an endless line of pallet cars moves. A layer of indurated pellets is arranged at the bottom of each car to protect it against the heat. The green pellets are then charged on ...