Vedanta invites partnership from cement companies for by-products

By: |
July 19, 2021 5:27 PM

In a national workshop conducted with global industry experts, the company expressed its interest for long-term collaboration with cement industry players on opportunities of using fly ash, a by-product in thermal power generation, and bauxite residue in cement manufacturing.

The company has recently been awarded the Kuraloi (A) North coal block in Jharsuguda, which will be an optimal fit for its smelter unit.The company has recently been awarded the Kuraloi (A) North coal block in Jharsuguda, which will be an optimal fit for its smelter unit.

Vedanta on Monday said its aluminium vertical has invited partnerships from cement producers like ACC, UltraTech Cement and JK Cement to use its by-products for manufacturing low-carbon cement.

In a national workshop conducted with global industry experts, the company expressed its interest for long-term collaboration with cement industry players on opportunities of using fly ash, a by-product in thermal power generation, and bauxite residue in cement manufacturing.

“Vedanta aluminium business…invites partnerships from cement producers for using its by-products for manufacturing low-carbon cement,” the company said in a statement.
The cement industry, which is exploring viable solutions to produce cement more sustainably, is the perfect circular economy partner for Vedanta Aluminium, it said.

“Long-term strategic collaborations, such as between Vedanta and India’s key cement producers, will not only eliminate significant volumes of industrial waste from the system, but also provide the trifecta of quality, sustainability and cost benefits for the cement industry.

“We hope the Indian cement producers come forth to work with us on this innovative solution, which is a true win-win scenario for the industry and environment,” Rahul Sharma, CEO (aluminium business) of Vedanta, said during a webinar.

Fly ash and bauxite residue, the two most voluminous by-products generated by the aluminium industry, can be used in cement and concrete manufacturing, providing cement manufacturers significant benefits in terms of quality output, cost and sustainability.

Fly ash can partially replace cement in concrete (or be used to produce blended cement), significantly improving durability and workability of cement. With a 30-33 per cent blending ratio, fly ash can help save 270 kg of carbon emissions for every tonne of cement produced.

Bauxite residue can be added to the raw mix in clinker manufacturing to replace virgin bauxite, improving its hydraulic properties and strength.

Owing to high concentration of iron oxide and alumina, bauxite residue is a better substitute for laterite, used in clinker manufacturing. Moreover, the residual caustic in bauxite residue helps in controlling the emission of sulphur when used directly, making it a better fit for the purpose. Both fly ash and bauxite residue being industrial wastes themselves, come with significant cost and energy advantages as well.

Vedanta Aluminium’s technical workshop was attended by over a hundred executives from the cement industry.

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