DEM simulation of particle flow in a parallel-hopper bell-less charging apparatus for blast furnace

Qiu, Jiayong; Ju, Dianchun; Zhang, Jianliang; Xu, Yusong

doi:10.1016/j.powtec.2017.02.020

Cited by 25 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For both materials, average diameter remains unchanged and increases towards the later stages of emptying. 3,29) This stems from our observations during hopper filling in where larger sized particles roll outwards and occupy the walls. Since material near the walls is the last to exit the hopper, the particle weighted average diameter at the hopper exit increases with discharge time.…”

Section: Hopper Dischargingmentioning

confidence: 82%

“…For our purpose, mass flow would be the most ideal outcome, but studies have shown that the type of hopper used in simulation mainly results in funnel flow. [28][29][30] We use the profile shown in Fig. 5(a) and colour the particles (irrespective of whether they are pellets or sinter) according to the time in which they exit the hopper.…”

Section: Hopper Dischargingmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Selective Pellet Loading on Burden Distribution and Blast Furnace Operations

et al. 2023

View full text Add to dashboard Cite

Good permeability of the blast furnace bed is of paramount importance for stable operations of the same and to achieve it, controlled burden distribution is the key. While coke is primarily used to maintain permeability of the furnace bed (with the ferrous burden particles being considerably smaller), global calls for reducing CO 2 emissions substantially are pushing blast furnaces to consume lower amounts of the same. Considering this, other burden distribution methods must be explored to maximize permeability of the burden layer. To do so, efforts are made to control pellet dumping in the burden layer in such a way that it occupies more volume in the mid-radial portions away from the walls. Pellets being spherical in shape and having narrower size distributions than sinter offer more inter particle porosity. Discrete element method (DEM) simulations are used to study the effect of the delay in pellet loading time in the ferrous burden (composed of pellets and sinter) on the positioning in the hopper. This positioning is found to subsequently affect the hopper output constitution, which then affects the radial constitution of the ferrous burden layer. Delaying the pellet loading on the ferrous burden is found to delay emptying of the same from the hopper, resulting in more pellets occupying the mid-radial region of ferrous burden layer in the blast furnace. Based on the observations from simulations, trials are taken in blast furnace and relevant parameters are monitored to capture the effect of such a charging practice on operations.

show abstract

Section: Hopper Dischargingmentioning

confidence: 82%

Section: Hopper Dischargingmentioning

confidence: 99%

Effect of Selective Pellet Loading on Burden Distribution and Blast Furnace Operations

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The discrete element method (DEM) is a feasible numerical method widely applied to describe the motion of granular and discontinuous materials. More particularly, DEM has been extensively used to describe granular flows in several industrial applications, like in fluidized beds, [18][19][20] drum mixers, [21,22] hoppers charging and discharging systems, [23][24][25][26][27] and inclined chutes. [14,[28][29][30][31][32] Especially for the flow along inclined chutes, Mio et al [31] modeled the behavior of spherical sinter particles to calculate the velocity and size segregation of particles along the chute.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Discrete Element Method Analysis of Galvanized Steel Scrap Particles Along and After an Inclined Chute

Georgakopoulos

Hosseini

Kerry

et al. 2022

steel research int.

View full text Add to dashboard Cite

HIsarna is a novel ironmaking process with great raw materials versatility that is attractive for various secondary resources. Among the materials that can be recycled, there is steel scrap which is fed to the furnace bath through an inclined chute. The velocity distribution of the scrap particles along the chute affects the particles’ distribution on the liquid slag and, thereupon, the efficient operation of the reactor. In this study, the flow of steel scrap particles along an inclined chute with the same dimensions as those of the actual chute of the HIsarna plant is investigated experimentally and numerically. The simulations are validated using chute tip velocity and mass fractions collected at the different compartments of a sampling device. Translational and angular velocity distributions along and across the chute are reported, and the effect of different parameters are investigated. The impact of the shape of the particles on the simulation process is found to be negligible. The angular velocity distribution in cross‐sections of the chute exhibited a V‐shaped orientation, whereas the translational velocity displayed similar values across the cross‐sections. Moreover, translational velocity appeared to increase with increasing inclination angles, whereas angular velocity increased with decreasing batch size.

show abstract

“…Such information can be effectively used to clarify the mechanisms that control different phenomena and achieve optimized design of operations, equipment, and processes. There have been extensive studies for small-scale applications like in fluidized beds, [1][2][3] drum mixers, [4][5][6] hoppers charging and discharging systems, [6][7][8][9][10] and inclined chutes. [11][12][13][14] Wand et al [15] used DEM modeling to predict the flow behavior of loose cohesive soil.…”

Section: Introductionmentioning

confidence: 99%

Granular Flow Modeling of Galvanized Steel Scrap Injection into the HIsarna Iron‐Making Reactor

Hosseini

Georgopoulos

Dihman

et al. 2022

steel research int.

View full text Add to dashboard Cite

show abstract

DEM simulation of particle flow in a parallel-hopper bell-less charging apparatus for blast furnace

Cited by 25 publications

References 28 publications

Effect of Selective Pellet Loading on Burden Distribution and Blast Furnace Operations

Effect of Selective Pellet Loading on Burden Distribution and Blast Furnace Operations

Experimental and Discrete Element Method Analysis of Galvanized Steel Scrap Particles Along and After an Inclined Chute

Granular Flow Modeling of Galvanized Steel Scrap Injection into the HIsarna Iron‐Making Reactor

Contact Info

Product

Resources

About