coal based reduction lump iron sl rn manufacturer Grasping strong production capability, advanced research strength and excellent service, Shanghai coal based reduction lump iron sl rn supplier create the value and bring values to all of customers.
WhatsApp)
Outotec's direct reduction processes 5 Iron ore Process Reductant Product Direct reduced iron (DRI) Lumps Fines Coal SL/RN Circofer Circored Gas Pretreatment ICEPE June 22, 2011 – .
In the solid reduction process iron ore is converted into DRI in a rotary kiln fired by non-coking coal. Iron ore, coal and dolomite in pre-measured quantities are fed into the kiln, which is rotated at a speed of about 0.5 RPM. A temperature of 1,000 to 1,050 degrees is maintained through 70% of the kiln length towards the discharge end side ...
In the DR process (Route 2), only natural ores with high physical and metallurgical properties are applied. Among the numerous processes for direct reduction of iron ore, the Midrex and HYL III (by means of gas) and the SL/RN (rotary Kiln; by means of coal reduction) have had the most successful industrial implementation [13, 18, 19].
A mathematical model has been developed to predict the operating behavior of an SL/RN direct reduction kiln from a knowledge of the main process variables. The model is based on steady state principles and is capable of quantitatively describing the different chemical reactions in the kiln such as reduction, Boudouard reaction, coal devolatilization, combustion in the freeboard together with ...
SL/RN processOutotecThe process principles are the basis for numerous rotary kiln plants and still represent the dominant technology for the direct reduction of lump ore or pellets using coal. ... 2017· HYL process for direct reduction of iron ore was the fruition of research efforts begun by Hojalata y, later known as Hylsa, at the beginning ...
Developement of Indian Steel Industry. Menu bar. Follow
tional SL/RN direct reduction plants based on a rotary kiln, with non-coking coal as the reductant and fuel. • Design, engineering, delivery, and services for SL/ RN-Xtra plants, which use a combination of a pre-hardening grate and traditional SL/RN kiln for the treatment of iron ore fines. • Hydrogen-based Circored fine ore reduction plants
Now the coal if the desired temp. for reduction process is obtained, iron ore with dolomite is fed from inlet of the kiln. Since the kiln has a downward slope of 2.5% from the feed end side to discharge end side, its rotation causes the iron ore & coal to mix and travel through the system.
KINETICS OF IRON ORE REDUCTION BY COAL AND CHARCOAL ... advantageous position for coal/charcoal based sponge iron plants. The total gross reserves of coking coal and non-coking coal in India are approximately 11,602 and 71,400 million tones. India is one of the unfortunate countries, which does not have good quality of ... (SL/RN, Krupp-CODIR, DRC,
Direct reduction is defined as a process of producing solid iron product out of small-grain ore, lump ore or pallets, applying natural gas or coal-based reducing agents at relatively low temperatures i.e. at around 1000OC. There are two different types of direct reduction processes: a) processes based on solid reducing agents,
Boudouard reaction, dolomite, DRI, Iron ore, metallization, non coking coal, pellets, reduction, Rotary kiln, Sponge iron, Sulphur, Coal based Direct Reduction Rotary Kiln Process . The coal based direct reduction rotary kiln process was developed for converting iron ore directly into metallic iron without the melting of the materials.
The first DRI plant based on the SL/RN process was established in the 1960s by Lurgi Metallurgie, the predecessor of Outotec Oyj. Since then there have been a number of commercial plants commissioned worldwide operating with the widest range of iron-bearing materials including pellets, lump ores, beach sand, and ilmenite ore.
2. The SL-RN Process In the course of extensive development work by both SL and RN groups, it appeared that the process variants in both the systems pre- oiCHAR ruFLE AIR !COAL 2000.F FUEL REDUCTION KILN FLUX IRON OXIDE COO LER 200•F SEPARATION----wTAILINGS PRODUCT METALLIZED IRON Fig. 2 The SL/RN Stelco Lurgi/Republic steel, National
Dec 23, 2013· Reductant Natural Gas,Gassified Coal DRI/HBI/HDRI Gas Based Process Technology Shaft Furnace (Moving Bed) 1. Midrex 2. HYL-III 3. NSC 4. Iron carbide 5. Ghaem 6. Circored Reductant Non-Coking Coal DRI Technology Kiln Process 1. Krupp Rein 2. Krupp CODIR 3. SL/RN (Outocompu) 4. ACCAR 5. DRC 6.
It is shown that the final sponge iron powder, assaying 92·40% of Fe and 92·28% of metallisation degree, was manufactured with iron recovery of 96·60% under the following conditions: reducing siderite lump sample with 40·62% Fe and the particle size between 8 and 10 mm at 1050°C for 100 min and carbon to iron ratio of 2·3.
The SL/RN process, which utilizes rotary kiln to reduce lump ore, pellets and sand iron with coal, is in commercial production. This process suffers, however, from relatively big heat loss and facility size, and hence finds limited acceptance of 2 million tons/year.
The SL/RN process was developed in the early 1960s by Outotec in collaboration with three US companies. The process principles are the basis for numerous rotary kiln plants and still represent the dominant technology for the direct reduction of lump ore or pellets using coal. Operates with the widest range of iron-bearing materials, such as ...
comprise reduction in rotary kilns (e.g. SL/RN ), and to a much ... Direct reduction of iron ore by charcoal to sponge iron was the ... e.g. gas-based reduction of pellets and lump ore (e.g. Mid-
Design, engineering, delivery, and services for traditional SL/RN direct reduction plants based on a rotary kiln, with non-coking coal as the reductant and fuel. Design, engineering, delivery, and services for SL/ RN-Xtra plants, which use a combination of a pre-hardening grate and traditional SL/RN kiln for the treatment of iron ore fines.
The SL/RN process was developed in the early 1960s by Outotec in collaboration with three US companies. The process principles are the basis for numerous rotary kiln plants and still represent the dominant technology for the direct reduction of lump ore or pellets using coal. - Operates with the widest range of iron-bearing materials, such as ...
SL/RN – The charge, preheated to 1800°F by counter-flowing freeboard gases, usually consists of lump ore (or pellets), coal, recycled char, and flux if sulphur need to be removed from the coal. Reduction is brought about by reducing gases generated from hydrocarbons present in the reduction section.
Presentation OutlinePresentation Outline • Background • Gas Based - Direct Reduced Iron • Midrex • Hyl-III and Hyl-ZR • ULCORED • Hybrid System • Corex-DRI SchemeDRI Scheme • Gasification-DRI Scheme • Coal BasedCoal Based – Direct Reduced IronDirect Reduced Iron • SL/RN .
What are HYL and SL/RN technologies - key features, advantages and disadvantages of these two Direct Reduction iron making processes HYL III and SL/RN - The two widely accepted Direct Reduction (DR) Processes of ironmaking - Industry.Guru
However in the coal/oil-based DR process, the reducing gas is generated from hydrocarbons (primarily coal, but sometimes oil and natural gas) in the reduction zone of the furnace, which is typically a rotary kiln. Typical examples of the coal-based process include the SL/RN and ACCAR processes.
WhatsApp)
Online Chat
Sales Hotline