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Processing Optimization Research of Aluminium-consuming Anode Quality Improvement

Author: ZhaoYongJin
Tutor: XiaoJin；LiuGang
School: Central South University
Course: Non-ferrous metallurgy
Keywords: Aluminum electrolytic Carbon anode Quality Process optimization
CLC: TF351
Type: Master's thesis
Year: 2004
Downloads: 197
Quote: 2
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Abstract


Prebaked anode aluminum reduction cell with the technical and economic indicators of the quality of carbon anode aluminum production has an important influence. The quality of our pre-baked anode significantly lagging behind the international advanced level, has become an important factor restricting the development of China's aluminum industry. In this paper, in their own in aluminum on the basis of 10 years experience in the production and management of the carbon anode with the the carbon anode quality of process optimization to improve the aluminum was. Firstly, a comprehensive review of the pre-baked anode production technology, improve the prebaked anode quality test and then highlighted shortcomings of traditional craft, the research work and the results obtained are as follows: ① the aggregate oil Jiaodui Yang pole quality, studies show that: as the of petroleum coke impurities vanadium content increases, the carbon anode air reactivity to speed up; petroleum coke sodium content increases, the carbon anode CO 2 reaction consumption increases; sulfur reduce the anode increase the reactivity to air, but too high will increase the sulfur hot brittleness of the anode; ② the binder component and the ratio of the amount of the study, the study found: To obtain the anode of the high compressive strength, bond agent asphalt softening point should be controlled within the range of 110 ° C or about the QI value is preferably 8-14%, the content of the β-resin should be controlled in the 18-24%; ③ the calcination process has been studied, the study found: calcination temperature 1250 ~ 1300 ℃, holding time 2 hours, different proportions of mixed coke calcining after the true density and resistivity can be more than the indicator; ④ aggregate formulations studied, the study found: by adjusting the formula, dry The bulk density of the material, improving the physical properties of the anode; ⑤ through the influence of the calcination temperature and time on the anode quality found: under the premise of maintaining the total roasting time, to change the interval range of the respective temperature and heating rate, which can effectively improve the roasting block quality; running after more than two years of production, roasting warming curve is more reasonable the anode physical and chemical parameters were significantly improved, stable quality, meet the electrolytic production needs; ⑥ study found that by optimization of the ratio of phosphorus pig iron: phosphorus pig iron ratio adjusted to better meet the needs of the production of energy saving, production run: Statistics show that new formulations can not pressure off rate reduced 1.08 percent, reduce the pressure drop of iron-carbon 31.25mv test results are very obvious.

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CLC: > Industrial Technology > Metallurgical Industry > Metallurgical machinery,metallurgical production automation > Non-ferrous metallurgical machinery and production automation > Nonferrous metallurgy machinery
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