ANDRITZ to supply two new mixed acid recovery systems (Pyromars) to Walsin Lihwa


International technology group ANDRITZ has received an order from Walsin Lihwa, Taiwan, to supply two Pyromars plants with capacities of 4,500 l/h and 6,500 l/h for their wire rod production sites in Yantai, China, and Yenshui, Taiwan.

Start-up of the plants is scheduled for the first quarter of 2023.

The ANDRITZ scope of supply includes the mechanical and electrical equipment as well as supervision of erection work and commissioning.

The ANDRITZ mixed acid recovery systems will significantly reduce the nitrates in the wastewater and enable nitric and hydrofluoric acids to be recovered, thus saving consumption of fresh acid in Walsin Lihwa’s wire rod pickling plants. In addition, this investment in sustainable operation will strongly reduce the amounts of wastewater and sludge produced.

Walsin Lihwa is a strong business partner of ANDRITZ and is already operating a Pyromars plant and two ZEMAP systems that ANDRITZ has supplied.

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International technology group ANDRITZ offers a broad portfolio of innovative plants, equipment, systems and services for the pulp and paper industry, the hydropower sector, the metals processing and forming industry, pumps, solid/liquid separation in the municipal and industrial sectors, as well as animal feed and biomass pelleting. Plants for power generation, flue gas cleaning, recycling, and the production of nonwovens and panelboard complete the global product and service offering. Innovative products and services in the industrial digitalization sector are offered under the brand name Metris and help customers to make their plants more user-friendly, efficient and profitable. The publicly listed group has around 26,700 employees and more than 280 locations in over 40 countries.

ANDRITZ Metals is – via the Schuler Group – one of the world’s leading suppliers of technologies, plants and digital solutions in metal forming. The product portfolio also includes automation and software solutions, process know-how and service.

In the metals processing segment, the business area offers innovative and market-leading solutions for the production and processing of flat products, for welding systems and furnaces, as well as services for the metals processing industry.

ANDRITZ Pyromars plant

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Susan Trast
Head of Group Communications & Marketing
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