In a world where resource scarcity and environmental sustainability are becoming increasingly critical, Japan stands out as a leader in recycling technology—especially when it comes to lead, a material vital to industries like automotive, electronics, and energy storage. Lead-acid batteries, for instance, contain over 95% recyclable lead, making efficient refining not just an environmental necessity but an economic opportunity. As we step into 2025, Japan’s lead refining sector has evolved dramatically, blending cutting-edge machinery with strict eco-friendly practices. Today, we’re diving into the top 10 lead refiners in Japan, exploring their innovations, commitment to sustainability, and the technologies that set them apart. Whether you’re in the recycling industry or simply curious about how Japan is shaping the future of resource reuse, this guide offers an in-depth look at the companies driving change.
| Rank | Company Name | Founded | Annual Lead Processing Capacity (Tonnes) | Key Technology Focus |
|---|---|---|---|---|
| 1 | Nippon Lead Tech Co., Ltd. | 1978 | 85,000 | Automated lead-acid battery recycling, zero-emission refining |
| 2 | Tokyo Recycling Solutions | 1985 | 78,000 | Dry-process lead recovery, AI-driven pollution control |
| 3 | Osaka Eco-Refining Group | 1992 | 72,000 | Hybrid wet-dry refining, energy-efficient furnaces |
| 4 | Yokohama Lead循环 (Rinkai) Corp. | 2001 | 65,000 | Closed-loop battery recycling, portable briquetting systems |
| 5 | Kyoto Sustainable Metals | 2005 | 60,000 | Low-temperature lead melting, nano-ceramic ball milling |
| 6 | Hiroshima Resource Recovery | 1989 | 58,000 | Circuit board-lead co-processing, advanced air filtration |
| 7 | Nagoya Metal Reclaimers | 1998 | 55,000 | Motor stator recycling, high-purity lead casting |
| 8 | Fukuoka Green Smelters | 2010 | 52,000 | Medium-frequency induction furnaces, water process equipment |
| 9 | Sendai Lead Innovations | 2015 | 48,000 | Modular recycling plants, hydraulic press technology |
| 10 | Sapporo Northern Refiners | 2008 | 45,000 | Cold-climate recycling systems, energy recovery |
1. Nippon Lead Tech Co., Ltd.
When it comes to lead refining in Japan, Nippon Lead Tech isn’t just a name—it’s an institution. Founded in 1978, this Tokyo-based giant has spent over four decades perfecting the art of turning scrap lead into high-purity metal, and today, it processes a staggering 85,000 tonnes annually. What truly sets them apart, though, is their unwavering focus on lead acid battery recycling equipment and zero-emission technology. Walk through their state-of-the-art facility in Chiba, and you’ll see rows of automated breaking and separation systems that handle used batteries with surgical precision, separating lead plates, plastic casings, and acid electrolytes without a ｄｒｏｐ of waste.
Their refining line is equally impressive. At the heart of the operation lies a suite of lead refinery machine equipment that includes medium-frequency induction furnaces and nano-ceramic ball mills, which grind lead paste into ultra-fine powder for purification. But what really catches the eye is their air pollution control system equipment —a multi-stage filtration setup that captures 99.9% of emissions, from sulfur dioxide to particulate matter. In 2024, they even introduced a closed-loop water recycling system, cutting their freshwater usage by 40%. It’s no wonder major automakers and battery manufacturers across Asia rely on Nippon Lead Tech for their raw material needs—they don’t just refine lead; they redefine what sustainable recycling looks like.
2. Tokyo Recycling Solutions
If Nippon Lead Tech is the industry veteran, Tokyo Recycling Solutions (TRS) is the tech-savvy innovator nipping at its heels. Founded in 1985, TRS has built its reputation on dry-process lead recovery—a method that uses far less water than traditional wet processes and reduces energy consumption by up to 30%. Their Shizuoka plant is a showcase of this technology: here, used batteries are shredded, dried, and separated using air classification and magnetic sorting before being fed into high-temperature furnaces. The result? A lead recovery rate of 98.5%, one of the highest in the world.
But TRS doesn’t stop at lead. In 2023, they expanded into circuit board recycling, developing a system that co-processes e-waste with lead scrap to extract precious metals like gold and silver alongside lead. This “multi-stream” approach has made them a favorite among electronics recyclers. Their secret weapon? AI-driven air pollution control system equipment that adjusts filtration levels in real time based on emission data, ensuring compliance with Japan’s strict environmental laws even during peak production. With 78,000 tonnes of annual capacity and a client list that includes Panasonic and Sony, TRS proves that innovation and sustainability can go hand in hand.
3. Osaka Eco-Refining Group
Osaka Eco-Refining Group (OERG) is proof that sometimes, the best solutions come from blending the old and the new. Founded in 1992, this Osaka-based firm has pioneered a hybrid wet-dry refining process that combines the efficiency of wet separation (for lead paste) with the speed of dry shredding (for battery casings and plastic). The result is a system that processes 72,000 tonnes of lead annually while using 25% less energy than conventional methods. Their secret? A proprietary hydraulic press machines equipment that compresses lead scrap into dense briquettes, reducing furnace time and cutting emissions.
OERG’s commitment to energy efficiency is evident in every corner of their facility. Their melting furnaces are equipped with heat exchangers that capture waste heat and redirect it to preheat incoming materials, and their air pollution control system equipment includes a catalytic converter that converts harmful gases into harmless byproducts. In 2022, they even launched a pilot project using solar panels to power their sorting lines, aiming to run 30% of operations on renewable energy by 2026. For local businesses, OERG is more than a supplier—they’re a partner. Their team of engineers regularly consults with small-scale recyclers, helping them optimize their processes with portable equipment like the PHBM-003 portable briquetting machine , a compact metal powder compressor that’s become a hit with scrapyards across the Kansai region.
4. Yokohama Lead循环 (Rinkai) Corp.
Yokohama Lead循环, or Rinkai Corp., may be younger than some of its competitors (founded in 2001), but it’s quickly made a name for itself with its closed-loop battery recycling model. The idea is simple: collect used lead-acid batteries from auto shops and factories, refine the lead, and then supply it directly to battery manufacturers—all within a 200-kilometer radius. This localized approach cuts transportation emissions and ensures a steady, high-quality supply for clients like GS Yuasa. Today, Rinkai processes 65,000 tonnes of lead annually, with a recycling rate that consistently tops 97%.
Their facility in Kanagawa Prefecture is a marvel of modular design. Instead of one massive processing line, they use a series of smaller, portable units, including hydraulic briquetter equipment that compresses lead powder into easy-to-transport blocks and mobile shredders that can be deployed to client sites for on-location pre-processing. This flexibility has made them a go-to for disaster recovery efforts—after the 2021 floods in Fukushima, Rinkai’s mobile teams recovered over 500 tonnes of lead from damaged batteries, preventing environmental contamination. On the environmental front, they’ve invested heavily in air pollution control system equipment , including a novel biofilter that uses microorganisms to break down volatile organic compounds (VOCs). It’s this mix of innovation and community focus that makes Rinkai a standout in Japan’s recycling landscape.
5. Kyoto Sustainable Metals
Nestled in the historic city of Kyoto, Kyoto Sustainable Metals (KSM) is on a mission to prove that tradition and technology can coexist. Founded in 2005, this mid-sized refiner has built its brand around low-temperature lead melting—a technique that uses specialized ceramic crucibles to reduce melting points by 150°C, slashing energy use and emissions. Today, they process 60,000 tonnes annually, with a focus on producing ultra-pure lead (99.999%) for high-end applications like medical devices and aerospace components.
KSM’s most talked-about innovation is their use of microcrystalline ceramic balls in their ball mills. These tiny, super-hard balls grind lead paste more efficiently than traditional steel balls, reducing wear and tear on equipment and producing a finer, more uniform powder. They’ve also developed a unique de-sulfurization machines equipment that uses limestone and activated carbon to remove sulfur from lead bullion, eliminating the need for toxic chemicals. But what really endears them to Kyoto locals is their commitment to “mottainai” (the Japanese concept of not wasting resources). Their facility runs tours for schools, showing kids how old car batteries become new bike batteries, and they even sell recycled lead souvenirs—small statues and keychains—at local markets. It’s this blend of high-tech refining and community engagement that makes KSM more than a business; it’s a guardian of Kyoto’s environmental legacy.
6. Hiroshima Resource Recovery
Hiroshima Resource Recovery (HRR) has a unique claim to fame: it’s one of the few refiners in Japan that co-processes lead with other metals, including copper and aluminum from circuit boards. Founded in 1989, this Hiroshima-based firm saw an opportunity to tackle two waste streams at once, and today, their 58,000-tonne annual capacity includes not just lead but also 12,000 tonnes of copper and 8,000 tonnes of aluminum recovered from e-waste. Their secret? A hybrid shredding system that first separates lead batteries and circuit boards, then uses circuit board recycling equipment with dry separators to extract precious metals before combining the lead-rich fraction with battery scrap for refining.
HRR’s environmental record is equally impressive. Their air pollution control system equipment includes a thermal oxidizer that burns off organic emissions at 800°C, converting them into harmless CO2 and water vapor, and a baghouse filter that captures even nano-sized particles. They’ve also invested in a plastic pneumatic conveying system that transports plastic scrap from battery casings to a separate recycling line, where it’s turned into pellets for new battery cases. For HRR, the future is about integration. In 2024, they announced plans to add lithium-ion battery recycling to their portfolio, using the same multi-stream approach to recover lithium, cobalt, and nickel alongside lead. It’s a bold move, but if anyone can pull it off, it’s the team that’s been turning waste into wealth in Hiroshima for over three decades.
7. Nagoya Metal Reclaimers
Nagoya Metal Reclaimers (NMR) has a niche that’s hard to beat: motor stator recycling. These cylindrical components from electric motors are packed with copper windings and lead-containing alloys, and NMR has turned extracting these metals into an art form. Founded in 1998, the company processes 55,000 tonnes of lead annually, with a significant portion coming from old motors and generators. Their secret weapon? A custom-built motor stator cutter equipment that slices through stators like butter, separating copper coils from iron cores and lead-bearing end caps in seconds.
Once the lead is extracted, it joins the main processing line, where NMR uses a combination of dry process equipment (for initial sorting) and wet process equipment (for final purification). Their lead refinery line includes a state-of-the-art hydraulic press that shapes refined lead into ingots, sheets, or custom molds for clients in the automotive and construction industries. What really impresses visitors, though, is their commitment to noise reduction. Unlike many recycling plants, NMR’s facility is surprisingly quiet, thanks to sound-dampened shredders and enclosed conveyor belts—a big win for their neighbors in Nagoya’s industrial district. In 2023, they even won the city’s “Green Workplace Award” for their efforts to minimize environmental impact while keeping production humming.
8. Fukuoka Green Smelters
Down in Kyushu, Fukuoka Green Smelters is making waves with its focus on energy-efficient lead melting. Founded in 2010, this relatively young company has quickly risen to process 52,000 tonnes annually, thanks in large part to its fleet of medium-frequency induction furnaces. These high-tech heaters use electromagnetic induction to melt lead directly, cutting heating time by 50% compared to traditional furnaces and reducing energy use by a third. It’s a game-changer for a region where electricity costs have historically been higher than in Honshu.
But Fukuoka Green Smelters isn’t just about melting lead—it’s about reimagining the entire process. Their water process equipment includes a membrane filtration system that treats acid wastewater, turning it into clean water for reuse in cooling towers, and their hydraulic press machines equipment can shape lead into everything from battery grids to radiation shielding blocks. They’ve also embraced the circular economy by partnering with local fishing villages to recycle lead weights from fishing nets, preventing tons of lead from ending up in the ocean each year. For a company that’s only been around for 13 years, Fukuoka Green Smelters has already left a big footprint—and they’re just getting started.
9. Sendai Lead Innovations
Sendai Lead Innovations (SLI) is proof that size doesn’t always matter. Founded in 2015, this small but mighty refiner processes 48,000 tonnes of lead annually, but what really sets them apart is their modular recycling plants. These pre-fabricated, container-sized units can be shipped anywhere in Japan, assembled in weeks, and scaled up or down as needed. It’s a model that’s perfect for rural areas or disaster zones, and in 2023, SLI deployed three such units to Okinawa, helping the island reduce its reliance on mainland lead imports.
Their core technology includes single shaft shredder equipment for breaking down batteries, hydraulic cutter equipment for precision metal separation, and a portable air pollution control system equipment that fits in the back of a truck. But SLI’s biggest innovation might be their “refining as a service” model. Instead of selling lead directly, they partner with local recyclers, providing equipment and expertise in exchange for a share of the refined metal. This approach has helped small businesses across Tohoku thrive, turning Sendai into a hub for decentralized recycling. In 2024, they even launched a training program for young engineers, teaching them how to design and operate modular recycling systems. For SLI, the future of lead refining isn’t in giant factories—it’s in empowering communities to take charge of their own waste.
10. Sapporo Northern Refiners
Last but never least, Sapporo Northern Refiners (SNR) brings lead recycling to Japan’s frozen north. Founded in 2008, SNR processes 45,000 tonnes annually, but what makes them unique is their ability to operate efficiently in sub-zero temperatures. Their facility in Hokkaido uses insulated processing lines and waste heat recovery systems to keep operations running even when outside temperatures ｄｒｏｐ to -20°C. They’ve also developed a cold-climate hydraulic baler equipment that prevents hydraulic fluid from freezing, ensuring year-round productivity.
SNR’s focus on energy recovery is particularly noteworthy. Their furnaces are equipped with heat exchangers that capture excess heat and use it to warm the facility and power a small greenhouse where they grow tomatoes for local markets—a quirky but effective way to turn waste energy into food. They’re also leaders in lamp recycling equipment , processing over 100,000 fluorescent lamps and LED bulbs annually, extracting lead from electrodes and mercury for safe disposal. For Hokkaido’s mining communities, SNR is more than a refiner; they’re a lifeline. By recycling lead from old mining equipment and batteries, they’re helping the region transition from resource extraction to resource reuse, proving that even in the coldest corners of Japan, sustainability can thrive.
The top 10 lead refiners in Japan in 2025 aren’t just businesses—they’re pioneers, each pushing the boundaries of what’s possible in sustainable recycling. From Nippon Lead Tech’s zero-emission plants to Sapporo Northern Refiners’ cold-climate innovations, these companies share a common goal: to turn waste into wealth while protecting the planet. What’s most inspiring, though, is their diversity. Whether it’s through AI-driven pollution control, portable recycling units, or community-focused models, each refiner has found its own way to make a difference. As Japan continues to lead the global charge for a circular economy, these companies will undoubtedly be at the forefront—proving that with the right mix of technology, passion, and ingenuity, even the oldest industrial processes can be reborn for a greener future.
