A numerical investigation assessing the symmetry of burden charging in a blast furnace using different chute designs

ABSTRACT A full-scale 3D numerical model using the discrete element method is used to investigate three different chute designs for the charging of a blast furnace. The three chutes differ in the proportion of the chute that is either smooth or contains rock boxes. The uniformity of the delivery of burden materials is assessed as the burden passes through a 2D plane is used to determine the relative merits of the three designs. The chute composed entirely of rock boxes was predicted to provide the most homogeneous delivery of material to the top of the blast furnace according to the above criterion. Choice of chute design is discussed with reference to the historical movement away from the older ledge-charging strategies to the more modern chimney-charging strategies. Schematic diagram showing predicted burden delivery distribution form a full-scale 3D DEM model for a blast furnace. GRAPHICAL ABSTRACT

[1]  Marc Holmes,et al.  Bending and twisting friction models in soft-sphere discrete element simulations for static and dynamic problems , 2016 .

[2]  Henrik Saxén,et al.  Effect of DEM Parameters on the Simulated Inter-particle Percolation of Pellets into Coke during Burden Descent in the Blast Furnace , 2012 .

[3]  Jianliang Zhang,et al.  Simulation of particle flow in a bell-less type charging system of a blast furnace using the discrete element method , 2014 .

[4]  Shinroku Matsuzaki,et al.  Effect of chute angle on charging behavior of sintered ore particles at bell-less type charging system of blast furnace by discrete element method , 2009 .

[5]  Henrik Saxén,et al.  Experimental and DEM study of segregation of ternary size particles in a blast furnace top bunker model , 2010 .

[6]  Marc Holmes,et al.  Powder Bed Layer Characteristics: The Overseen First-Order Process Input , 2016, Metallurgical and Materials Transactions A.

[7]  Shinroku Matsuzaki,et al.  Validation of Particle Size Segregation of Sintered Ore during Flowing through Laboratory-scale Chute by Discrete Element Method , 2008 .

[8]  Shinroku Matsuzaki,et al.  Development of particle flow simulator in charging process of blast furnace by discrete element method , 2012 .

[9]  Shinroku Matsuzaki,et al.  Analysis of traveling behavior of nut coke particles in bell-type charging process of blast furnace by using discrete element method , 2010 .

[10]  Peter Warren,et al.  Modern Blast Furnace Ironmaking , 2020 .

[11]  Henrik Saxén,et al.  Segregation behavior of particles in a top hopper of a blast furnace , 2014 .

[12]  W. Marsden.  I and J , 2012 .

[13]  Katalin Bagi,et al.  Contact rolling and deformation in granular media , 2004, 1901.07342.

[14]  Aibing Yu,et al.  Numerical Investigation of Burden Distribution in a Blast Furnace , 2015 .

[15]  Shengli Wu,et al.  DEM simulation of particle size segregation behavior during charging into and discharging from a Paul-Wurth type hopper , 2013 .

[16]  Shengli Wu,et al.  DEM Simulation of Burden Distribution in the Upper Part of COREX Shaft Furnace , 2013 .

[17]  Brown Steve.  DEM Prediction Of Burden Distribution Patterns In A Blast Furnace Bell-Less Top Charging System , 2013 .

[18]  Jam Hans Kuipers,et al.  Experimental study of monodisperse granular flow through an inclined rotating chute , 2013 .