Do you know the carbon emission characteristics of China's aluminum industry?

1、 Coal electricity accounts for a large proportion in electrolytic aluminum production in China

Compared with European and American electrolytic aluminum enterprises, China's electrolytic aluminum industry has higher carbon emission in the electrolytic link, mainly because the domestic raw aluminum power energy is heavily dependent on thermal power

According to statistics, by the end of 2020, the self owned power consumed by China's electrolytic aluminum operation capacity accounted for 65.2% and the grid power accounted for 34.8%.

Among them, the self provided power is all thermal power, and the grid power is divided according to the power generation structure of each regional grid. It is estimated that in the energy structure of electrolytic aluminum, thermal power accounts for 88.1% and non fossil energy accounts for 11.9%

2、 There are still bottlenecks in key carbon reduction technologies

In aluminum smelting production, the reserves of zero carbon and negative carbon core technologies such as low-temperature waste heat recovery, waste free metallurgy, inert anode, ultra-low energy consumption aluminum electrolysis and carbon dioxide capture and utilization are insufficient.

3、 The proportion of recycled aluminum is relatively low

The calculation shows that the carbon dioxide emission of recycled aluminum is only about 4% of that of primary aluminum.

In the same year, China's aluminum output was 44.48 million tons, including 7.4 million tons of recycled aluminum, accounting for 16.6% of domestic aluminum output. There is a big gap between the output of recycled aluminum in China and the international average level

In the same year, China's aluminum output was 44.48 million tons, including 7.4 million tons of recycled aluminum, accounting for 16.6% of domestic aluminum output. There is a big gap between the output of recycled aluminum in China and the international average level

 4、 The path of realizing carbon peak and carbon neutralization in aluminum industry

Combined with the carbon emission characteristics of China's aluminum industry, the path to achieve carbon peak and carbon neutralization mainly includes improving energy utilization efficiency, industrial structure adjustment, energy structure adjustment, zero carbon (negative carbon) technology development, etc.