Metso Corporate Newsroom News 2024 Metso introduces compact 4[th] generation Outotec Kaldo L Furnace for higher recovery of metals
Product news March 20, 2024

Metso introduces compact 4[th] generation Outotec Kaldo L Furnace for higher recovery of metals

Metso Corporation’s press release on March 20, 2024, at 09:00 a.m. EET

Metso is introducing the compact 4th generation Outotec® Kaldo L Furnace for flexible processing and optimal recovery of metals. The upgraded heavy-duty furnace is ideally suited for the melting, reducing and converting of various primary and secondary raw materials such as concentrates, copper scrap, anode slimes and e-waste.

The Kaldo L Furnace features smooth movement with improved process control. It is also equipped with advanced charging and off-gas systems, enabling a very compact plant layout and high operational flexibility. The technology is part of Metso’s Planet Positive offering.

“We are excited to launch the upgraded Kaldo L Furnace to the market. It will benefit our customers through an increased recovery of metals and longer equipment lifetime with efficient materials handling in a compact process,” explains Jonny Eliasson, Director, Non-Ferrous and Smelting Recycling at Metso.

Metso’s Outotec® Kaldo technology is a well-established solution and has several references globally. It has been successfully used in the precious metals, copper, and lead processing industries for decades and represents the best available TBRC technology for this purpose. An Outotec® Kaldo L pilot plant is available for performing customer tests to validate materials and processes.

Find out more about Metso’s Outotec® Kaldo L Furnace on our website.

Further information:

Mathias Stenlund, Product Manager, Non-Ferrous and Smelting Recycling, Metso, tel. +46 703 154 450, email: mathias.stenlund(at)metso.com

Jonny Eliasson, Director, Non-Ferrous and Smelting Recycling, Metso, email: jonny.eliasson(at)metso.com, tel. +46 702 540 657

Helena Marjaranta, Vice President, Communications and Brand, Metso Corporation, tel. +358 20 484 3212, email: helena.marjaranta(at)metso.com


Metso is a frontrunner in sustainable technologies, end-to-end solutions and services for the aggregates, minerals processing and metals refining industries globally. We improve our customers’ energy and water efficiency, increase their productivity, and reduce environmental risks with our product and service expertise. We are the partner for positive change. 

Headquartered in Espoo, Finland, Metso employs over 17,000 people in close to 50 countries and sales for 2023 were about EUR 5.4 billion. The company is listed on the Nasdaq Helsinki. Metso.com, x.com/metsoofficial

Metso Kaldo L Furnace