Decarbonisation Technology - May 2024 Issue

the expansion of power transmission and distribution capacity. However, in its report, CRU International highlights potential risks such as fluctuations in EV sales, battery metal prices, and the impact of environmental policies on aluminium demand. Overall, the report provides valuable insights into the evolving landscape of aluminium demand and the key sectors driving this transformation. Aluminium recycling The production of virgin aluminium involves extracting bauxite, refining it into alumina, and then electrolysing it to produce pure aluminium. In contrast, recycled aluminium is sourced from post-consumer and industrial waste. Aluminium recycling is a vital process that significantly contributes to sustainability and resource conservation (see Figure 2 ). The recycling process begins with collecting aluminium scrap from various sources, including used beverage cans, automotive parts, construction materials, and consumer electronics. The collected scrap (see Figure 3 ) is then sorted, cleaned, and processed to remove contaminants such as paper, plastic, and other metals. Once the scrap is prepared, it undergoes melting in a furnace, where it is heated to high temperatures to liquefy the aluminium. After melting, the molten aluminium is purified to remove any remaining impurities, resulting in high-quality recycled aluminium. This recycled aluminium can then be used to produce new products (see Figure 4 ). The aluminium recycling process offers significant environmental benefits as it requires only a fraction of the energy needed for primary aluminium production, reducing greenhouse gas emissions and energy consumption. Additionally, recycling aluminium helps conserve natural resources and reduces landfill waste, making it a crucial component of the circular economy. As the demand for sustainable and eco-friendly materials continues to grow, aluminium recycling plays a pivotal role in promoting environmental responsibility

Figure 2 Aluminium recycling is a crucial component of the circular economy

Transition to low-carbon aluminium Hydro, formerly Norsk Hydro, is a Norwegian aluminium and renewable energy company with a global presence. The company’s primary focus is the production of aluminium, where it operates throughout the entire value chain, from bauxite extraction to the production of extruded and rolled aluminium products. Hydro Circal 75R is a specific aluminium

and mitigating the environmental impact of industrial production.

Figure 3 Collected aluminium scrap

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