Numerical Simulation of Flow Field in Large Bottom-Blown Furnace Under Different Scale-Up Criteria

Xi, Wenlong; Niu, Leilei; Song, Jinbo; Liu, Suhong

doi:10.1007/s11837-022-05628-y

Cited by 4 publications

(1 citation statement)

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“…Many factors affecting equipment production, such as mixing time and flow field characteristics, should be considered in the research of large-scale equipment. In order to improve production capacity and economic benefits, the large-scale bottom-blown lead smelting furnace is an inevitable trend in future production [29]. However, the existing research mainly focuses on the impact of the local structure optimisation of the original small bottom-blown furnace on its performance, while the literature on the large bottom-blown furnace is relatively scarce, and there are still some problems such as unclear flow characteristics in the large bottom-blown furnace.…”

Section: Introductionmentioning

confidence: 99%

Flow Field Study of Large Bottom-Blown Lead Smelting Furnace with Numerical Simulation

Niu

Song

2023

Metals

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In this paper, a large bottom-blown lead smelting furnace is studied by numerical simulation, the flow characteristics of different planes, monitoring points and molten pool regions are analysed, and a formula is established to predict the velocity distribution of molten pool in the bottom-blown furnace. The results show that the flow between two adjacent oxygen lances will influence each other and effectively reduce the existence of a low-velocity region. The high-velocity region at the liquid surface is mainly distributed above the bubble molten pool reaction region (BMRR), and the velocity is transmitted to the upper/lower sides. The wall shear stress is mainly distributed at the bottom and on the walls on both sides of the BMRR. The pre-stabilisation time of a bottom-blown furnace is 2 s, and the unstable state existing in the local region will not have a great influence on the overall flow field in the furnace. The distribution of the bubble plume and the high-velocity region overlaps under the free liquid surface, and their boundaries are basically consistent. The fitting effect of the velocity cumulative percentage curve and each point is very good.

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Section: Introductionmentioning

confidence: 99%