3D Numerical Simulation of the Influence of AGD Beams on Gas Distribution in COREX-3000 Shaft Furnace

Abstract

A three-dimensional mathematical model is developed to describe the influence of AGD beams on gas distribution in COREX-3000 shaft furnace. The calculated result shows that with AGD beams installed, the pressure drop in furnace is decreased while the volume of low velocity zone at bottom of furnace is enlarged. AGD channels can lead reduction gas into shaft center, and increase the gas velocity at slots level, but it have little effect on gas distribution at upper part of the furnace. AGD beams are also good at restraining down pipe gas, and the volume fraction of down pipe gas declines from 9.89 % to 6.41 %, decreases about 35.2%. 2#COREX furnace with AGD beams is better at achieving uniform gas distribution.

Experimental study and numerical simulation of dust accumulation in bustle pipe of COREX shaft furnace with areal gas distribution beams

“…The phenomenon was also found in Ref. [11,12]. The average velocity in the 8–12# slot regions was 3.58 m/s.…”

“…This directly affects the smoothness and performance of the SF. Although the gas distribution [11,12], the mass and energy transfers [13], the solid flow, and the segregation behaviour [14] in the SF with AGD have been studied in detail, the dust accumulation in the bustle pipe of the SF has not been studied. There have been experimental and numerical studies that explain gas-fine flow and fine particle blockage in a packed bed [15][16][17][18][19][20], but the understanding of the gasfine flow in the SF bustle pipe and the initial position of the dust accumulation remains unknown.…”