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DRI Products & Applications
DRI USE IN THE EAF DRI Products & Applications 6 DRI is ideally suited for use as either a replacement or a supplement for scrap in the EAF. DRI provides EAF operators the flexibility to tailor their furnace charges to achieve the desired product quality at the lowest cost per ton of liquid steel.
's Outotec DRI Smelting Furnace
's Outotec DRI Smelting Furnace is developed to tolerate high slag volumes and it is designed to work under reducing atmosphere to avoid excess iron losses and enables …
PERED Technology for Direct Reduced Iron Production
Fig 1 PERED DRI plant at Mianeh Steel Complex in East Azarbaijan province, Iran ... This results into higher volume of reduction zone resulting into higher production rate. The furnace has dual reducing gas injection which improves the distribution of gas inside the furnace. ... Distribution of the ore burden inside the …
World DRI production reaches 119.2 Mt in 2021 …
The production of hot briquetted iron (HBI) – a compacted form of DRI ideally suited for shipping and for use in the blast furnace – is estimated to have been 10.4 Mt, a 9.3% increase over 2020 and a 7.4% increase …
Direct Reduction Process
The total share of the DRI in the world crude steel production is about 5%, while the blast furnace hot metal account for 60% and steel scrap for the rest. 1.1.9.2.1.1 The MIDREX Process Gas-based direct reduction processes are particularly suitable for installation in those areas where natural gas is available in abundance and at economical ...
Direct Reduced Iron (DRI) Production Plant
to stable operation of blast furnaces. 6. Production of High-C DRI The use of in-situ reforming, or direct use of CH 4 in the reducing gas, enables production of DRI with high carbon content, High-C DRI. It is easy to handle High-C DRI because it is not easily re-oxidized. It also has the advantages mentioned below. ・High-C DRI is highly ...
DRI Production Using Coke Oven Gas (COG): Test Results of …
TRS® also opens up new DRI production options for conventional integrated steel mills (coke oven/blast furnace/basic oxygen furnace), as seen in Figure 14. Using TRS® technology to process COG into a high quality syngas that can be used as reducing gas in a MIDREX® Reduction Furnace allows integrated steel producers to make optimum use …
North Africa: Focus on Direct Reduction Ironmaking
DRI production in 2019 was 6.46 million tons compared with approximately 0.75 million tons of hot metal. ... (basic for civil and buildings; detail for piping, structural steel, and electrical), equipment and materials supply, and local services. ... Algeria and Egypt are transitioning from the blast furnace/basic oxygen furnace (BF/BOF) steel ...
Tunnel Furnace
Provide continuous heating, by Induction heaters, to raise the billet surface temperature to 1050°C; but this increases the overall cost of production and the CAPEX cost. To overcome the above problems, ENCON provides a tunnel furnace that uses a liquid or gaseous fuel to raise the surface temperature of the billets from 800°C to 1050°C.
Open Slag Bath Furnace for Hot Metal production (OSBF)
The perfect solution for melting high carbon DRI to produce hot metal. The electric furnace works using brush arc and Søderberg electrodes. It can tap hot metal into torpedo cars. Slag has same composition of blast furnace slag. Within iBLUE®, the OSBF is the best green substitute of Blast Furnaces.
Direct Reduced Iron: Most Efficient Technologies for …
Using direct reduced iron (DRI) from the Fastmet process and using rotary hearth furnace (RHF) technology, as a partial substitute of pellets in a blast furnace …
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DRI Technology | Tata Steel
DRI technology is used to make iron in electric blast furnaces. To produce high-grade steel, the oxygen must be removed from the iron ore. This is also called reduction. Currently, we do this using coal in our Blast Furnaces. CO2 emissions are a side effect of burning coal. The new DRI technology uses hydrogen instead. This only releases water.
DRI Smelting Furnace
High capacity 6-in-line DRI Smelting Furnace to replace blast furnaces (BF). Can use direct reduced iron (DRI) made from BF - grade iron ore by enabling high slag volumes. …
The development of DRI pellets for green steelmaking
To substantially reduce, if not eliminate, carbon dioxide (CO₂) emissions from ironmaking it is necessary to convert from blast furnace (BF) ironmaking using coking coal as the reductant to direct reduction (DR) ironmaking using hydrogen (H₂) and green electricity. Currently, almost all natural gas (NG) based direct reduced iron (DRI) production …
Steel Mill Products :: Duraloy Technologies
Tunnel furnaces (or roller hearth slab reheat furnaces) provide one of the toughest environments for cast steel fabrications. With temperatures approaching 2300° F, these rolls are expected to carry the full weight of the slab being heated to rolling temperatures. ... DRI Furnace Parts. Duraloy manufactures cast tubes and fittings for the ...
History, developments and processes of direct reduction …
processes. This never occurred. The worldwide production of DRI was 114 mill. t in 2021 and the hot metal production of blast furnaces was 1,340 mill. t which is more than ten times of the DRI production. The gas-based direct reduction processes have a share of 75% at total DRI production and this is mainly done in regions with low natural gas ...
Impact of Hydrogen DRI on EAF Steelmaking
TABLE III identifies some EAF CO 2 sources (9), from power generation (50-70% energy input to the EAF [see Figure 7]) to combustion of C from the bath, dirt on scrap, in-situ C (liquid steel, scrap, PI, DRI, HBI, MagCarbon bricks, electrodes, charge C, injection C), and lime production.. CO 2 remediation is focused on the EAF route, despite the smaller …
Decarbonizing Steel Production: More Than a Pipe Dream
This BF-BOF process emits over 40% more CO 2 emissions per ton of crude steel compared to an alternative production process called DRI-EAF that involves producing DRI from ore and then turning that iron into steel in an electric arc furnace (EAF). So, the industry could reduce its emissions quite a bit by shifting away from BF-BOF …
Tosyali Algerie Sets DRI Production Record in 2021, Contracts 2nd DRI
Setting the DRI production record for a second time is a real testament to the skill and know-how of the Tosyali Group." ... (DRI) production facility with an annual capacity of 2.5 million tons and the world's largest electric arc furnace (EAF) working with DRI. The Tosyali Algerie DRI plant broke the world record two years in a row by ...
Based on proven proprietary Outotec equipment …
DRI Smelting Furnace. or replacing blast furnaces when combined with a direct reduction plant. The flexible process, which produces molten metal directly usable in downstream …
Solving iron ore quality issues for low-carbon steel | IEEFA
Thyssenkrupp is planning a new steelmaking route that adds a submerged arc furnace (SAF) melting stage after DRI production before sending it to an existing BOF. The company's plan is to replace four BFs with new DRI-SAF technologies by 2045, with the first two to be replaced in 2025 and 2030 respectively.
Modeling of partial reduction of hematite with carbon …
DRI production in tunnel furnaces sometimes encounters an incomplete degree of reduction. A model is required to tackle heterogeneous reaction rates, crucible heat transfer, and oxide morphology. Herein, a three-phase model is proposed based on heat and mass conservation and reaction kinetics, to describe the reduction of hematite to magnetite in …
Use of Direct Reduced Iron (DRI) in the Electric Arc …
products in a wide variety of furnaces • DRI is shipped as old DRI, but in integrated DRI/EAF mills can be charged hot directly to the EAF (furnace discharge temperature is 650-700°) The value-in-use of DRI is different for each melt shop and will depend on local scrap supply, production facilities, metallurgical practice and steel product mix.
MIDREX® Direct Reduction Plants 2021 OPERATIONS …
MIDREX Technology continued to account for ~80% of worldwide production of DRI by shaft furnaces in 2021. At least seven MIDREX Modules* established new annual production records and at least six established new monthly production records. Twelve additional modules came within 10% of their record annual production and 15 operated …
ENERGY-EFFICIENT TECHNOLOGY OPTIONS FOR DIRECT …
To meet the DRI production target of 80 million tonne by 2030–31 as envisaged under the National Steel Policy (2017), whilst improving the industry's energy and environmental …
Addition of Scrap and DRI/HBI to the Blast Furnace — …
Direct reduced iron (DRI) and hot briquetted iron (HBI) are added to electric arc furnaces (EAFs) to dilute scrap residuals; added to the basic oxygen furnaces to displace …
Research article Optimization of direct reduction in …
manufacturing of coke. Modern direct reduction iron-making (DRI) techniques are replacing outdated blast furnace methods. Directly reduced iron, also known as sponge iron, …
Cost and Life Cycle Analysis for Deep CO
In the DRI production process, the pellets are fed to the top of a shaft furnace to be heated and converted to 848 kg of DRI iron by counterflowing high-temperature-reducing gas. Finally, the 848 kg of DRI iron (with 790 kg iron) is mixed with 254 kg of scrap (recycled steel with 253 kg iron) and fed to the EAF furnace, refined, …