Optimizing Waste Heat Recovery in the Post-combustion

Coal, iron ore, and dolomite are used as raw materials. The iron ore is reduced to sponge iron inside the rotary kiln. The coal enters from both ends of the rotary kiln; one end is known as the feed side, and the other is the injection side. The iron ore, dolomite, and coal (nearly 50% of the total coal required) enter from the feed end of the ...

Coal based Direct Reduction Rotary Kiln Process …

The main raw materials for the production of DRI by the rotary kiln process are (i) sized graded iron ore or iron ore pellets, (ii) non-coking coal, and (iii) dolomite in small quantities to scavenge the sulphur. ... Equivalent …

LECTURE NOTES ON Sponge Iron & Ferro Alloys

1930-1950s Saggers in Tunnel Kilns- Small Shaft Furnace- Rotary Kilns- Hogganas- Wiberg- Krupp & Lurgi- Coal Based Coal Based Coal Based 1950-1960s Static Reactors- ... sulphur natural gas and it can produce good quality of sponge iron. Midrex process is most widely adopted process in the world for making direct reduced iron.

Iron

The reduction process takes place in a gas fired tunnel kiln at around 1200°C for 60 hours producing a sponge iron cake that is crushed, milled and magnetically separated from …

| Engineering & Consultancy

We have provided engineering and consultancy services for more than 500 Sponge Iron Kilns of different modules / capacities ranging from 15,000 TPA to 100,000 TPA. ... DRI (Tunnel Kiln) : 30 TPD 50 TPD 100 TPD Iron Ore …

DESAIN DAN SIMULASI TUNGKU BAKAR UNTUK …

FOR FERRUGINOUS SAND TO BE SPONGE IRON PROCESS BY USING TUNNEL KILN TECHNOLOGY Barman Tambunan, Cuk Supriyadi, Juliansyah Pusat Teknologi Industri Manufaktur – BPPT, Kawasan Perkantoran PUSPIPTEK, Gedung Teknologi II (254) Serpong Tangerang Selatan, Banten 15314, Telepon (021) 75874944 ext. 1211

(PDF) Operation of Coal-Based Sponge Iron …

Data-1 includes temperatures profiles and air inlet at positions, AT-1 to AT-3 and MF-1 and MF-2, inside the kiln whereas, flow rates of iron ore, feed coal, slinger coal and sponge iron is ...

LECTURE NOTES ON Sponge Iron & Ferro Alloys

Sponge Iron & Ferro Alloys 8 TDR Process: It stands for TISCO Direct Reduction. The TISCO plant is also known as TATA Steel. TATA steel established a sponge iron plant in Keonjhar …

Abstract and Figures

desain dan simulasi tungku bakar untuk pengolahan pasir besi menjadi sponge iron dengan teknologi tunnel kiln = design and simulation of furnace for ferruginous sand to be sponge iron process by ...

Sponge Iron Production in Rotary Kiln

The increase in the demand of sponge iron is also due to the fact that it is used as a substitute for coking coal which is available in scarcity in the world. This book comprehensively deals with the production of sponge iron in the rotary kiln. The book is divided into 17 chapters. The initial chapters give a brief on the fundamental theories and basic principles of sponge …

SPONGE IRON PRODUCTION FROM ORE -COAL …

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. The material bed in Tunnel kiln being stationary, it does not require high strength and thermal stability of the raw material.

Conversion of Sponge Iron From Low Grade Iron ore …

The process of DRI or sponge Iron making can be classified into different categories as given below: (A) Rotary Klin Process Rotary Kiln method is very important for sponge iron production using non-coking coal as a reluctant. The Iron ore is charged from one end with non-coking coal which is in the lump form or pellets and heated from

Sponge Iron Production Process

Sponge iron production process . The sponge iron production process discussed herein is selected from known methods, the references of which are available and referable. We look at the four different methods of producing sponge iron: Midrex process; HYL process (4th generation) or Energiron; SL / RN process; Tunnel furnace process 1) Midrex process

Innov Engineering Pvt. Ltd

Sponge iron, also called Direct-reduced iron (DRI) is produced from direct reduction of iron ore by a reducing gas produced from coal. The reducing gas is a mixture of hydrogen and carbon monoxide which acts as reducing agent. Rotary Kiln Process

Sponge iron making process | PPT | Free Download

Sponge iron making process - Download as a PDF or view online for free ... It then outlines the rotary kiln process which involves preheating and combustion zones, use of primary and secondary air, coal injection, and rotary cooling before magnetic separation and screening to produce sponge iron and char as outputs. Waste heat is recovered to ...

Rotary Kiln Process of Making Sponge Iron 2 . 1 HISTORICAL

Consequently, they were replaced by the high production rate 'indirect process,' and the development of modern DR Process did not begin until the middle of 19th century. Perhaps the very first patent in U.K. for sponge iron making was in 1792 presumably using a rotary kiln. More than 100 DR processes have been invented and operated since 1920.

Schematic diagram of plant and the rotary kiln (see arrow) …

The product gases from coal-fired sponge iron kilns exit at a high temperature (800-950 o C) and contain some unburnt carbon and carbon monoxide along with nitrogen, carbon dioxide and entrained dust.

Sponge Iron Production by Calcium Carbonate, Sodium …

production of sponge iron was investigated with calcium carbonate, sodium carbonate, and barium carbonate cata-lysts under different conditions using the tunnel kiln meth-od. The …

New Sponge Iron Rotary Kiln Design In Sponge Iron Manufacturing Process

Then the mixture enters the reduction zone of sponge iron rotary kiln, and the iron concentrate is reduced by carbon monoxide to form iron elements. During the sponge iron manufacturing process, hot air enters through the air tube and air nozzle of the sponge iron kiln, providing heat for the reaction.

Automatic temperature control method for sponge iron tunnel kiln …

For achieving the above object, the sponge iron tunnel kiln temperature automatic control method designed by the present invention, comprises the steps: 1) tunnel cave temperature ideal set value is set on single-chip microcomputer; 2) utilize temperature sensor that the tunnel cave temperature signal detected in real time is passed to single-chip microcomputer; 3) with single …

5/22/2015 Articles

5/22/2015 Articles - Production of Sponge Iron through Tunnel Kiln Process I IPFOnline 1/2 1 .php IPF online India's Only Industrial product portal

Iron

Sponge iron powder . The Höganäs process is a direct reduction method for production of sponge iron powder using magnetite ore (Fe3O4) and carbon as raw materials. The reduction process takes place in a gas fired tunnel kiln at around 1200°C for 60 hours producing a sponge iron cake that is crushed, milled and

Tunnel Kiln

Our Modern technology Tunnel kiln is designed to meet the customer's needs as determined by their process and layout requirements. Office: 022 4161 7000 / 022 4161 7133. Address: ... suitable for large production of Sponge Iron. The tunnel kilns are capable of using soft ore, and work with iron ore fines comfortably.

(PDF) i) Direct Reduced Iron: Production

In book: Encyclopedia of Iron, Steel, and Their Alloys (pp.pp 1082-1108) Chapter: i) Direct Reduced Iron: Production; Publisher: CRC Press, Taylor and Francis Group, New York.

Conversion of Sponge Iron From Low Grade Iron ore And …

The process of DRI or sponge Iron making can be classified into different categories as given below: (A) Rotary Klin Process Rotary Kiln method is very important for sponge iron production using non-coking coal as a reluctant. ... Page Conversion of sponge iron from low grade iron ore and mill scale through simulating tunnel kiln (B) Rotary ...

Refractories for Sponge Iron Production by Direct Reduction …

The production process of HYL III sponge iron can be divided into two parts, the gas-making boundary area, and the reduction boundary area. The gas production boundary includes the generation and purification of reducing gas. ... Producing Sponge Iron in Tunnel Kiln. The tunnel kiln for firing sponge iron is a low-temperature kiln with a ...

Optimization of Biomass Materials for use in the Sponge …

The sponge iron process is a process for producing sponge iron, which is porous iron [1]. The raw material used for producing sponge iron is magnetite ore concentrate (Fe 3 O 4 ... they will be placed on a cart and enter a tunnel kiln [1]. The cart will travel through three zones in the tunnel kiln; the pre-heating zone followed by a firing zone

Production of Sponge Iron through Tunnel Kiln …

Hi, you can read this article, please {Production of Sponge Iron through Tunnel Kiln Process}, by Swaren Bedarkar. Cite. Hadi Poorhosseinali. Isfahan University of Technology. Hi.

OPERATIONAL ASPECTS OF SPONGE IRON …

1. Krupp Sponge Iron Process The Krupp. Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge ...

Production of Sponge Iron through Tunnel Kiln Process

In the year 1908 use of tunnel kiln started for iron oxide reduction. This process was invented by E.Sieurin as Hoganas process [3]. In 1954, more kilns came in operation in SWEDEN and …

Production of Sponge Iron through Tunnel Kiln …

i need some resources about the production process and raw material of Silicon carbide saggers in sponge iron reduction via the tunnel kiln method.

CASE GROUP

The process of Tunnel Kiln uses fines of Iron ore and fines of Coal to make DRI of 90% plus metallization. About Sponge Iron/DRI. Sponge Iron, also known as Direct Reduced Iron is the product produced out of using iron ore. The iron ore is processed through reduction process by the use of gas that emits from natural coal gas resource.

Reduction Efficiency of Iron Ore–Coal Composite Pellets in Tunnel Kiln

In the current work, an attempt has been made to use mill scale and iron concentrate which are not applicable to pelletized, in the reduction process with tunnel kiln for iron manufacturing.

Rotary Kiln Manufacturers | Electrotherm E&T

Electrotherm E&T is the foremost manufacturer of Coal Based Rotary Kiln for Sponge Iron (100 TPD, 350 TPD). Download Rotary Kiln PDF to get more product information. ... 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 ...

An optimized process of drying titanium pellets in a tunnel kiln

Performance results of reduction process to produce a finish Sponge Iron with increased Fe content of 51.72% to 78.79% with 36.68% metallization degree (Jogja samples) and from 52.93% to 57.90% ...

Mathematical Modelling of Sponge Iron Production in a Rotary Kiln

The mathematical model was customized and validated with data from one of the industrial scale rotary kilns at Tata Sponge Iron Limited (TSIL) and was utilized for process analysis and optimization.

PRODUCTION OF SPONGE IRON BY TUNNEL KILN

The max. temp of the kiln was kept at about 1300°C. The seduced products were solid mass of sp. gr. about B.G. The sp. gr. of 7 may be obtained, if desired, by suitably charging conditions. According to this experiment it was shown that the sponge iron might be easily produced by tunnel kiln.

Sponge Iron production from ore -coal composite …

Iron ore fines and the low grade beneficiated iron ore cake are directly used for manufacturing of sponge iron in tunnel kilns. The material bed in Tunnel kiln being stationary, it does not require high strength and thermal stability of the raw …

Sponge Iron

SIPL is operating 4 x 100 TPD Direct Reduced Iron Rotary Kilns for production of 2000 TPA Sponge Iron at Purulia, using the proven German SL/RN technology. Sponge Iron, also known as Direct Reduced Iron is produced from Hematite Iron ore (5 to 18 mm size) by removing the oxygen by direct reduction process using non coking coal as the fuel and ...

A new model for using rotary furnaces in the production …

Sponge iron is produced using non-crushing coal through the iron ore reduction process in a rotary kiln. Regeneration takes place at a predetermined temperature and controlled …