shaft furnace iron ore pellet

shaft furnace technology from china for iron ore pellet

Direct reduction of iron is the removal of oxygen from iron ore or other iron bearing materials in the solid state, i.e. without melting, as in the blast furnace. The reducing agents are carbon monoxide and hydrogen, coming from reformed natural gas, syngas or coal. …

Inﬂuence of Oxide and Silicate Melt Phases on the RDI of ...

Inﬂuence of Oxide and Silicate Melt Phases on the RDI of Iron Ore Pellets Suitable for Shaft Furnace of Direct Reduction Process Srinivas DWARAPUDI1) and Madhu RANJAN2) 1) R&D, Tata Steel, Jamshedpur, 831007 Jharkhand, India. E-mail: [email protected] 2) R&D, JSW Steel, Bellary, 583275 Karnataka, India.

Iron ore pellet disintegration mechanism in simulated ...

The disintegration behavior and mechanism of iron ore pellet in simulated shaft furnace conditions were investigated in details. Effects of temperature, reducing gas and gangue compositions were ...

Iron ore pellet disintegration mechanism in simulated ...

The disintegration behavior and mechanism of iron ore pellet in simulated shaft furnace conditions were investigated in details. Effects of temperature, reducing gas and gangue compositions were emphatically discussed. It was found that pellet disintegrated acutely as reduced by H 2 /CO = 0.8 at 550 °C. Gangue minerals in pellet were proved to ...

MODELING THE IRON ORE PELLETS REDUCTION ON SHAFT …

The process for pelletizing iron ore fines is an important operation unit for producing high quality of raw materials for the subsequent reduction processes such as blast furnace or direct reduction.

Optimization of iron ore blending in the COREX shaft furnace

Sishen lump ore and CVRD pellets were used initially in the COREX shaft furnaces in China. Alternative lump ores L1, L2, and L3 were imported from Brazil, Australia, and South Africa respectively. The dominant phase in the iron ores was haematite. The chemical compositions of …

Moving behavior of pellets in a pellet shaft furnace ...

Feb 13, 2010· WANG Q, YANG Z X, TIAN J M, SUN J F. Fundamental study on new method of reducing iron ore-coal pellet in concurrent shaft furnace [J]. J Iron Steel Research, Int, 1999, 6(1): 19–22. Google Scholar [4] DONG Hui, CAI Jiu-ju, WANG Guo-sheng, et al. Experimental study on gas flow distribution laws in palletizing shaft furnace [J].

Iron ore pellet disintegration mechanism in simulated ...

Jul 15, 2017· Iron ore pellets were reduced at 450–600 °C under load of 0.4 kg/cm 2 by simulating upper shaft furnace conditions, . For each reduction experiment, iron ore pellets were heated to the required temperature and then reduced for 60 min in reducing gases (listed in Table 2) at flow rate of 0.6 m 3 /h. Subsequently, the reduced samples were ...

MIDREX® Process - Midrex Technologies, Inc.

Sep 15, 2021· Iron oxide, in pellet or lump form, is introduced through a proportioning hopper at the top of the shaft furnace. As the iron ore descends through the furnace by gravity flow, it is heated, and the oxygen is removed from the iron ore (reduction) by counterflowing gases that have a …

Iron Ore Pellets: North America, BF and DR Grade, Supply ...

shaft furnaces: pellets, lump ore key physical properties are size consist, mechanical strength: economic importance (a) yield of pellet, lump ore converted to DRI (b) performance of the shaft reduction furnace unlike blast furnace, pellets (and lump ore) are only solid materials and so determine

Maximizing Iron Unit Yield from Ore to Liquid Steel (Part ...

However, lump ore can cause challenges in the shaft furnace and material handling system. Therefore, pelletized ore currently is the primary feedstock for shaft furnace direct reduction operations around the world. Iron ore specifications for direct reduction use should be determined by the overall economics of the DR plant and the associated ...

Solid Fuel in Pelletizing Shaft Furnace - 911 Metallurgist

Sep 09, 2019· Sep 09, 2019· The use of solid fuel in shaft furnaces to indurate iron ore pellets was originally considered a necessary evil, which the industry worked long and hard to eliminate. Since then changes have taken place in furnace design and operating practices that have led us to our suggestion that solid fuel additions could again be used.

23 H 2 BASED DIRECT REDUCED IRON SHAFT FURNACE How it ...

2.3 H 2-BASED DIRECT REDUCED IRON – SHAFT FURNACE How it works: Instead of a carbon reductant such as coke, H 2 is used to reduce iron ore pellets to "direct reduced iron" (DRI, or sponge iron). The reaction takes place in a shaft furnace, a type of furnace that uses gas reductants to make DRI. The operating temperature can be fairly low, around 800°C.

MODELING THE IRON ORE PELLETS REDUCTION ON SHAFT FURNACE ...

The process for pelletizing iron ore fines is an important operation unit for producing high quality of raw materials for the subsequent reduction processes such as blast furnace or direct reduction.

Detailed Modeling of the Direct Reduction of Iron Ore in a ...

The shaft furnace is divided into three sections (reduction, transition, and cooling), and the model is two-dimensional (cylindrical geometry for the upper se … This paper addresses the modeling of the iron ore direct reduction process, a process likely to reduce CO₂ emissions from the steel industry.

[PDF] Iron ore pellet disintegration mechanism in ...

Abstract The disintegration behavior and mechanism of iron ore pellet in simulated shaft furnace conditions were investigated in details. Effects of temperature, reducing gas and gangue compositions were emphatically discussed. It was found that pellet disintegrated acutely as reduced by H2/CO = 0.8 at 550 °C. Gangue minerals in pellet were proved to ease the disintegration in various degrees.