dri rotary kiln technology
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dri rotary kiln technology

rotary kiln DRI production technology - YouTube

Nov 15, 2015 · Our company is professionally engaged in research and development on direct reduced iron technology, we mainly popularize rotary kiln technology and rotary h...

Coal based Direct Reduction Rotary Kiln Process – IspatGuru

Feb 14, 2017 · Rotary cooler – The product (DRI) along with coal ash, calcined dolomite and residual char is discharged from the kiln at around 1000 deg C. An enclosed chute at the kiln discharge end equipped with a lump separator and an access door for removing lumps transfers the hot DRI to a rotary

Prospects for Coal-based Direct Reduction Process

based DRI occupies 17.6 million tonnes, which equates to 25.7% of the total1). Most coal-based reduction processes including SL/RN2) employ rotary kilns. Pellets, or lump-ore, mixed with coal are/is charged into the rotary kilns2) and heated by coal burners to produce DRI. To avoid the significant formation of the kiln rings, their

Rotary Kiln Manufacturers | Electrotherm E&T

Rotary Kiln with SL/RN Process. Coal Based Rotary Kiln for Direct Reduced Iron / Sponge Iron (100 TPD, 350 TPD, and 500 TPD) Solid-state reduction of Iron Ore using either coal/gas as a medium of reduction to produce a substitute raw material for steel making is termed as Direct Reduced Iron (DRI). Since DRI is produced by removing oxygen from ...

CASE GROUP

CASE Group success story includes commissioning DRI Tunnel Kiln, first of its kind in India for use of all kind of iron ore fines. The cost-effective tunnel kiln technology brings final product which has density of 4 GMS/CC thus making it usable directly for melting in induction furnace, arc furnaces.

Direct Reduced Iron (DRI) | International Iron Metallics ...

DRI can be either hot or cold charged to the EAF. Some steel companies ship DRI from their captive direct reduction plants to their remote steel mills and a small volume of DRI is sold to third parties. In India there are many small rotary kiln furnaces producing DRI, known locally as sponge iron, using coal as energy and reductant source.

Direct Reduction Process - an overview | ScienceDirect Topics

Approximately 92% of the DRI is produced by using (reformed) natural gas as a fuel. Furthermore, in a significant number of sites, coal is used as a fuel in rotary kiln or rotary hearth furnaces (for example, SL/RN and iron dynamics).

Direct Reduced Iron and its Production Processes – IspatGuru

Mar 16, 2013 · Metallization, reformed natural gas, residual elements, Rotary kiln, Direct Reduced Iron and its Production Processes. Direct reduced iron (DRI) is the product which is produced by the direct reduction of iron ore or other iron bearing materials in the solid state by

CASE GROUP

CASE Group success story includes commissioning DRI Tunnel Kiln, first of its kind in India for use of all kind of iron ore fines. The cost-effective tunnel kiln technology brings final product which has density of 4 GMS/CC thus making it usable directly for melting in induction furnace, arc furnaces.

DRI UPDATE - Sponge Iron Manufacturer India

the DRI rotary kiln to improve utilization of Thermal Energy. 2) Technological options for recovery of heat which is being lost a)from exhaust gas (which is at 170 -180°C ) b)Indirect cooling of product from 1050°C to 100°C. 17 17 • Auto regulation of Roots blower to control the quality of

(PDF) i) Direct Reduced Iron: Production

Mar 30, 2016 · This product is known as direct reduced iron (DRI) or sponge iron. ... of DR technology has specified the characteristics of raw. ... coals for DRI production in rotary kilns. [7]

A Mathematical Modelling and Simulation for Reduction in ...

Apr 18, 2016 · A Mathematical Modelling and Simulation for Reduction in Thermal Losses by Painting DRI Kiln. S. S. Chakrabarti1, L. R. Bhandarkar2, R. K. Sangewar3, S. P. Singh4. 1, 2,3 O P Jindal Institute of Technology, Raigarh, India, 4 DRI-1, Jindal Steel and Power Limited Raigarh, India. Abstract – Rotary Kilns has been widely used for processing ...

WORLD DIRECT REDUCTION STATISTICS

(SIMA). Rotary kilns saw a 27.9% jump from 2018, which was already a 35% increase from 2017. Gas-based DRI plants ben - efited from lower natural gas pricing, as the global price of LNG decreased and the country invested in LNG infrastruc-ture. Production of DRI in Iran was a record 28.5M tons, all from natural gas-based processes.

New Technology (Tunnel Kiln) to make Sponge Iron / DRI in ...

Nov 23, 2011 · CASE Group has set up India's first DRI / Sponge Iron unit using Tunnel Kiln. The Kiln which is 194m in length, is the longest in India was successfully fir...

Rotary kilns for calcining and roasting | FLSmidth

We offer advanced, custom-tailored rotary kiln solutions Calcining and roasting is an intense process that involves high temperatures, heavy loads and significant thermal stresses. Finding the right rotary kilns that will consistently withstand the pressure is the key to

| Services

DRI (Rotary Kiln): We are pioneered in Sponge Iron (DRI) technology. We have proficiency in all phases of DRI plants of different configuration / capacity and for different kinds of available raw materials. Details of different capacity DRI plants using Rotary Kiln Technology. 100 TPD Size of the Kiln : Dia 3.0 M X 42 M Long

Rotary kiln - Wikipedia

A rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process.Materials produced using rotary kilns include: Cement; Lime; Refractories; Metakaolin; Titanium dioxide; Alumina; Vermiculite; Iron ore pellets; They are also used for roasting a wide variety of sulfide ores prior to metal extraction. In Process Metallurgy for recycling ...

SLRN process - Outotec

Our standard rotary kiln (4.8 x 80 m) is capable of producing up to 160,000 tons DRI per annum depending on the raw material. In the SL/RN-Xtra version, this figure goes up to 200,000 t/a. Typical consumption figures per ton of DRI produced from lump ore or pellets are: Iron ore: 1.46 t ; Coal: 380–450 kg Cfix depending on coal properties

Cost Of Tunnel Kiln Sponge Iron

However Rotary kiln process suffers from serious limitations like low productivity and pollution. In this respect fixed bed Tunnel kiln furnace are evolving as an alternative to Rotary kiln process. Iron ore fines and the low grade beneficiated iron ore cake are directly used for manufacturing of sponge iron in tunnel kilns.

Direct Reduced Iron | Industrial Efficiency Technology ...

The counter-current rotary kilns used for DRI production in India only allow about 60% of the heat to be used for reduction, revalorization of the remaining 40% that is discharged from the kiln offers a significant potential for energy efficiency improvements.

STUDY ON REDUCTION OF IRON ORE CONCENTRATE IN

DRI making using a rotary kiln technology is still not showing an optimum result. Therefore, development and innovation of the process are needed, especially raw material processing prior to feed into the rotary kiln. On the other hand, a large amount of DRI is needed to supply steelmaking at PT.

(PDF) COMPARISON OF DIFFERENT COAL BASED DIRECT REDUCTION ...

COMET rotary hearth process, Circofer process and kiln-type reactors provide some separation between the DRI and carbon char at the discharge of the reactor resulting to lower carbon and sulfur ...

SLRN process - Outotec

Our standard rotary kiln (4.8 x 80 m) is capable of producing up to 160,000 tons DRI per annum depending on the raw material. In the SL/RN-Xtra version, this figure goes up to 200,000 t/a. Typical consumption figures per ton of DRI produced from lump ore or pellets are: Iron ore: 1.46 t ; Coal: 380–450 kg Cfix depending on coal properties

Direct Reduction Technologies | SAIL

Direct reduction processes are of significance and can form an alternative to a conventional Blast furnace. Solid sponge iron ( direct reduced iron or DRI) is produced by removing oxygen from the ore .The technique of Direct reduction varies according to the type of reducing agents employed and the metallurgical vessel in which they are reduced.

74 Million Tons of DRI Produced in 2012 - Midrex ...

Jul 03, 2013 · Rotary kiln technology is largely exclusive to India; however, most new growth in India and the remainder of the world is using shaft furnace technology because of reliability and higher product quality. Shaft furnace DRI production in 2012 was led by MIDREX® Direct Reduction Plants once again, which produced 44.8 million tons, followed by ...

Coal gasification for DRI production – An Indian solution

Rotary kiln DRI capacity has been installed because it makes use of domestic iron ore and coal, but there is a limit to the growth of this technology because rotary kilns cannot be built larger than about 200kt/y. Thus, it is probably not feasible to build a steel mill to produce 1Mt/y or more via this route.

ORISSA METALIKS PRIVATE LIMITED

The direct reduction iron plant is of conventional Rotary Kiln technology. 09 nos. DRI kiln is installed to produce 0.78 MTPA sponge iron. Steel Melting Shop OMPL has 10 x 20 Ton induction furnace and production capacity is 6,00,000 TPA.

Technology_直接还原网

HYL Energiron plant, Welspun Maxsteel India. Continuous feed of hot DRI to EAF, Monterrey M. 1.6 Million tpy HYL Energiron plant, Emirates. 0.20 Million tpy HYL Energiron plant, Gulf Spo. midrex plant in Venezuela. midrex plant in Mittal. midrex plant in Lebedinsky GOK.

Refractory Castables for DRI Rotary Kilns, Special ...

"Special Refractory Castables For DRI Rotary Kiln" With our vast industry experience and competent workforce as our asset, we are able to manufacture, export and supply a broad array of Special Refractory Castables for DRI Rotary Kiln.These refractories are fabricated by our experts using high quality raw material with latest technology that ensure their longer service life.

Rotary Kiln Technology - Ironmaking Technology

Muffle Rotary kiln Technology . Muffle Rotary Kiln . Features Of Muffle Rotary Kiln Technology: 1. Fit for high grade iron ore, iron concentrate and mill scale to produce high density metallized pellet

A Thesis Submitted for Partial Fulfillment of the Degree ...

4.1 Industrial view of Sponge Iron making Rotary Kiln 24 4.2 Schematic view of internal heat exchange in Rotary kiln 26 4.3 Schematic view of Lobe Blower. 27 4.4 Schematic view of Air & material flow in Rotary kiln 27 4.5 Filling of Bed Geometry 28 6.1 Schematic Drawing of discharge end of Kiln 38

CASE Coal Gasifier for DRI Rotary Kiln - 62 Photos ...

CASE Coal Gasifier for DRI Rotary Kiln. 550 likes · 11 talking about this. Case Coal Gasifier used for reducing the Coal consumption used to make one ton of DRI (sponge iron) without effecting the...

Recovery and utilization of waste heat in a coal based ...

outside the kiln reduces amount of coal consumption. To bring waste gas from ESP outlet to rotary kiln an insulated duct, which is a hollow cylinder of 43m length and 0.6m diameter, is used. To preheat kiln air using waste gas a plate type heat exchanger is designed

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