title: ÐÑÐµÐ½ÐºÐ° Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð±Ð¾ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð»Ð¸ÑÐ° Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸ÐµÐ²Ð¾Ð³Ð¾ ÑÐ»ÐµÐºÑÑÐ¾Ð»Ð¸Ð·ÐµÑÐ° Ð½Ð° ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð»Ð¸Ð·Ð°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Assessment of boration effect of the bath on aluminium reduction technology
Creators: name: Ð¥Ð°Ð±Ð¸Ð±ÑÐ»Ð»Ð¾Ð², Ð Ð¸Ð½Ð°Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð±Ð¾ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð² ÑÐ»ÐµÐºÑÑÐ¾Ð»Ð¸Ð·ÐµÑÐ°Ñ
ÑÐ»ÐµÐºÑÑÐ¾Ð»Ð¸Ñ Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸ÐµÐ²Ð¾Ð³Ð¾ ÑÐ»ÐµÐºÑÑÐ¾Ð»Ð¸Ð·ÐµÑÐ°
Ð±Ð¾ÑÐ¸Ð´Ñ
Ð¿ÑÐ¸Ð¼ÐµÑÐ¸ Ð² Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸Ð¸
boration in pots
bath
borides
impurities in aluminum

description: ÐÐ° 62 Ñ., 30 ÑÐ¸ÑÑÐ½ÐºÐ¾Ð², 19 ÑÐ°Ð±Ð»Ð¸Ñ
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description: 62 pages, 30 figures, 19 tables
Theme of the final qualification work: Â«Assessment of boration effect of the bath on aluminium reduction technologyÂ».
The purpose of this work is to assess the boration effect of the bath on alu-minium reduction technology. Tasks that were solved during the study:
1. Evaluate the thermodynamic capability of various reactions involving bo-ron-containing compounds at the temperature of aluminum reduction.
2. Elaborate the technology for the molten bath boration using pilot pots to produce liquid aluminum of electro-technical grades.
3. Assess the effect of boration on aluminium reduction technology.
4. Based on the data obtained, assess the feasibility of using the molten bath boration technology on the industrial scale.
The work was carried out on the basis of Kandalaksha aluminum smelter, in the potroom of which the boration tests were performed using industrial pots. Thermodynamic calculations were performed that allowed to evaluate the thermo-dynamic capability of reactions involving boron-containing compounds at the tem-perature of aluminum reduction. The entropy method of calculation was used.
The results have demonstrated that the elaborated boration technology is ef-fective for the reduction of vanadium and titanium contents, and allows reducing the amount of âheavyâ impurities in liquid aluminium by at least 2 times. The neg-ative effect on aluminium reduction technology was discovered â the significant increase of voltage drop in the cathode of pilot pot.
Considering the increase of electrical resistance in the cathode of pilot pot as a negative consequence of the elaborated technology of boration in pots, it is not recommended to standardize and distribute this technology.