Study on the effect of coke particle size on titanium slag smelting

Li Kaimao; Xiao Jun; Ma Yong; Song Bing; Qiu Shuxing

doi:10.7513/j.issn.1004-7638.2023.03.006

Volume 44 Issue 3

Jun. 2023

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Li Kaimao, Xiao Jun, Ma Yong, Song Bing, Qiu Shuxing. Study on the effect of coke particle size on titanium slag smelting[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 39-44. doi: 10.7513/j.issn.1004-7638.2023.03.006

Citation:

Li Kaimao, Xiao Jun, Ma Yong, Song Bing, Qiu Shuxing. Study on the effect of coke particle size on titanium slag smelting[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 39-44. doi: 10.7513/j.issn.1004-7638.2023.03.006

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Study on the effect of coke particle size on titanium slag smelting

doi: 10.7513/j.issn.1004-7638.2023.03.006

1.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
2.
Pangang Group Titanium Co., Ltd., Panzhihua 617000, Sichuan, China
3.
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

Received Date: 2023-02-06
Publish Date: 2023-06-30

Abstract

Abstract

According to the characteristics of free settling movement of particles in the fluid, the theoretical calculation results show that the maximum size of coke particles taken out under the condition of continuous feeding smelting titanium slag is 0.06 mm. Combined with the industrial application, the size range of coke for test is 2～8 mm. Based on this, the influence of coke particle size on titanium slag smelting was investigated. The results show that under the condition of constant power, the flue gas temperature and CO concentration fluctuate greatly in the smelting process, and the electrode position rises rapidly at the beginning of smelting, which is caused by the large coke particle size and relatively delayed reaction. As a result, the consumption per ton of slag coke, the time consumption per hundred tons of material, and the power consumption per ton of slag are respectively 24 kg, 0.18 h, 52.07 kWh more than the reference period. By contrast, the power is increased from 17.67 MW/h to 18.14 MW/h (increased by 0.47 MW/h), thermodynamic and kinetic conditions are improved, coke is fully reacted, carbon residue in the furnace is eliminated, and smelting is more stable. At the same time, coke consumption per ton of slag and power consumption per ton of slag are reduced by 26 kg and 128.12 kWh respectively compared with "unraised power test period". The narrow and uniform coke particle size distribution is conducive to the titanium slag smelting process and quality stability control, while the increase of power can effectively reduce the adverse effect of relatively large coke particle size on titanium slag smelting.
- titanium slag , smelting,
- coke,
- lower limit of particle size,
- power consumption

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References(11)

References

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