Skip to main content

SRF from shoe factory waste for Holcim Vietnam

Published by , Editor
World Cement,

Austrian alternative fuel specialists UNTHA are involved in a complex project with a Holcim plant in Vietnam. The plant is installing a Solid Recovered Fuel (SRF) manufacturing plant to process production waste from Vietnam’s main shoe factory. This alternative fuel will then be burned in the calciner.

Holcim opted for a total solution from UNTHA that includes an anti-explosive Atex-specification XR3000 Cutter waste shredder with two 113 kW motors, conveyor, over-band magnet, control room and water-powered fire suppression technology. It is capable of processing up to 10 tph of material to produce an 80 mm fuel with high (15 – 20 GJ/t) calorific value. Metals will be extracted for recycling.

The SRF plant was made in Salzburg, Austria, where acceptance testing was carried out by Holcim before it was shipped out to Vietnam. It is expected to be operational by September.

Christian Lanner, UNTHA’s Head Of Engineering and Product Management explains: “This footwear production waste is an incredibly difficult product to shred, due to the mixture of notoriously tough materials contained within sports shoes. We’re tackling rubber, textiles, plastics, metals, sponge, reinforcements and more. However, we extensively configured, re-engineered and trialled our flexible XR waste shredder – using the client’s own material – until it was perfectly suited to this application.

“We’ve also refined the cutting concept so that it is incredibly well equipped to deal with this demanding waste stream.”

Adapted from press release by

Read the article online at:

You might also like


Ready to revolutionise the cement industry?

Join World Cement in Lisbon, 10 – 13 March 2024, for our first in-person conference and exhibition: EnviroTech.

This exclusive knowledge and networking event will bring together cement producers, industry leaders, technical experts, analysts, and other stakeholders to discuss the latest technologies, processes, and policies being deployed at the forefront of the cement industry’s efforts to reduce its environmental footprint.

Final tickets on sale NOW »


Embed article link: (copy the HTML code below):