What happens to the used batteries in collection boxes at 7-Eleven stores? How are they recycled, and where do they go? We interviewed Mr. Joe Ein, Managing Director of UMC Metals, a steel manufacturer overseeing the battery recycling process, to learn about the collaboration with Panasonic Energy and the recycling technologies involved.
A New Challenge for a Steel Company With 30 Years of History
UMC Metals, a Thai steel company, was established in 1995. It purchases scrap metal from construction sites and automobile dismantling yards, melts it in electric furnaces, and produces billets (rectangular steel bars) and rebar.
Explaining how UMC Metals became involved in the used dry battery collection and recycling initiative, Mr. Joe Ein stated, “I understand that our name was mentioned during discussions between Panasonic Energy and our supplier, the Japanese recycling company HIDAKA YOOKOO Enterprises, about the battery recycling business. After receiving a request to participate, we carefully considered it and concluded that our technology made it feasible, so we agreed to cooperate.”
According to Mr. Joe, while battery recycling was not technically difficult, careful adjustments were needed to ensure that no harmful substances were released during the recycling process.
Obtaining government approval for this unprecedented battery recycling initiative in Thailand took two years. Reflecting on this, Mr. Joe shared, “The Thai government tends to take a long time to approve first-of-its-kind projects. However, Panasonic Energy showed strong determination and persistently approached the government. As a result, the recycling of Panasonic batteries was officially approved, presenting us with a new challenge.” While the technology was ready, the delays in approval likely caused considerable frustration.
“ECOARC™ Furnace”: Japanese Eco-friendly Technology
One of the reasons that UMC Metals was deemed suitable for battery recycling is its unique electric furnace, the “ECOARC™.” Known as an “eco-friendly high-efficiency arc furnace,” this Japanese technology features advanced scrap preheating that eliminates smoke and odors during the metal melting process.
According to Mr. Joe, the ECOARC™ was introduced to UMC Metals in 2013 as part of an energy-saving demonstration project by Japan’s New Energy and Industrial Technology Development Organization (NEDO). The project achieved a 30% energy-saving effect and a reduction in CO2 emissions compared to conventional electric furnaces.
Mr. Joe explained why UMC Metals was chosen as the installation site for ECOARC™: “At the time, multiple companies, including ours, were considered. NEDO conducted site inspections of the factories, evaluating location, workforce, and facility size. Based on these criteria, our company was selected. We were delighted to adopt such innovative technology to develop an environmentally friendly business,” he said, reflecting on the decision.
UMC Metals electric furnace
Battery Recycling: A Vision Beyond Economic Returns
The used Panasonic batteries collected via the recycling boxes are melted in the ECOARC™ furnace, recycled into materials like iron and zinc, and sold. However, the products resulting from this process are more expensive than those produced through conventional means, leaving little profit.
Despite this, Mr. Joe emphasized, “Our involvement in battery recycling is not for profit. As a steel company, we are committed to sincerely addressing Thailand’s environmental issues and contributing in any way possible.”
Regarding prospects, he added, “We will continue making incremental improvements, working on energy conservation, and striving to reduce CO2 emissions. I hope our recycling business will be an example for other companies looking to contribute to environmental improvement efforts.” Mr. Joe reaffirmed UMC Metals’ strong commitment to tackling environmental issues through his comments.
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