RU97101676A - METHOD FOR THE INPUT OF THE ELECTROLYSER FOR THE PRODUCTION OF ALUMINUM INTO OPERATION - Google Patents

Claims (1)

1. The method of commissioning an electrolytic cell for aluminum production, including burning the bath, starting the electrolyzer, feeding the boron-containing component into the bath and changing the voltage, putting it into operation mode, characterized in that during the starting period after pouring the electrolyte, the voltage on the bath increases to 15-20 In with a delay of 0.4 - 0.5 h, after pouring aluminum - 20 - 30 V to complete melting of raw materials, then maintain the voltage of 8 - 10 V during the day, with the supply of boron-containing component in the amount of 0.03 - 0.06 wt . % (in terms of boric anhydride) from the liquid metal, and the voltage in the post-launch period is supported according to the following schedule:
2 days - voltage - 8.5 - 7.0 V
3 days - 7.5 - 6.0 V
4 days - 6.5 - 5.5 V
5 days - 5.0 ± 0.2 V
6 days - 5.5 - 6.0 V
7 days - 6.5 - 7.0 V
8 days - 7.0 - 7.5 V
9 days - 7.5 - 8.0 V
10 days - 8.0 - 7.5 V
11 days - 7.5 - 7.0 V
12 days - 7.0 - 6.5 V
13 days - 6.0 - 5.5 V
14 days - 6.0 - 5.5 V
15 days - 5.5 - 5.0 V
16 days - 5.5 - 5.0 V
17 days - 5.0 - 4.5 V
and in 2, 3, 4, 11, 12, 13 days the boron-containing component is fed into the bath in the amount of 0.03 - 0.06 wt.% (in terms of boric anhydride) from the liquid metal
2. The method according to p. 41, characterized in that after 30 days of operation after start-up a boron-containing component is fed into the bath in an amount of 0.06 - 0.5 wt.% (In terms of boric anhydride) from the liquid metal to the electrolyzer output to " hot move. "  3. The method according to paragraphs. 1 and 2, characterized in that after 60-75 days of operation after start-up, the boron-containing component is fed into the bath in the amount of 0.06 - 0.12 wt.% (In terms of boric anhydride) from the liquid metal daily for 2-4 days .