When it comes to sustainable recycling, especially in the realm of lead-acid battery processing, Japan has long been a global pioneer. At the heart of this industry lies the paste reduction smelting furnace—a critical piece of equipment that transforms lead paste from used batteries into reusable lead, minimizing waste and environmental impact. These furnaces aren’t just machines; they’re the backbone of circular economy efforts, turning scrap into valuable resources while adhering to the strictest环保 standards.
In Japan, suppliers of these furnaces don’t just sell equipment—they offer holistic solutions. From cutting-edge rotary designs to integrated systems that handle everything from battery breaking to emissions control, these companies understand that efficiency, safety, and sustainability go hand in hand. Today, we’re shining a spotlight on the top 10 paste reduction smelting furnace suppliers in Japan, exploring what makes each stand out, their unique technologies, and how they’re shaping the future of recycling.
Whether you’re a recycling plant looking to upgrade your operations or simply curious about the innovation driving this sector, this guide will walk you through the best of the best. Let’s start by diving into the companies that are setting the bar for excellence in paste reduction smelting and beyond.
1. Nippon Recycling Technologies (NRT)
Founded in 1978 and headquartered in Osaka, Nippon Recycling Technologies (NRT) has been a cornerstone of Japan’s recycling equipment industry for over four decades. What started as a small workshop focused on metal recovery has grown into a global leader, with paste reduction smelting furnaces operating in over 30 countries. NRT’s claim to fame? Their iconic rotary furnace for paste reduction, a design that’s become synonymous with efficiency and reliability in lead-acid battery recycling.
NRT’s rotary furnaces are engineered for precision. Unlike traditional static furnaces, their rotating drum design ensures uniform heat distribution, reducing processing time by up to 25% while cutting energy consumption. “We designed our furnaces to handle the toughest paste compositions,” says Takeshi Mori, NRT’s lead engineer. “Whether it’s high-sulfur paste or mixed battery types, our systems adapt, ensuring consistent lead recovery rates of 98% or higher.”
But NRT doesn’t stop at furnaces. They’re known for offering end-to-end lead acid battery recycling equipment packages, including battery breakers, paste separators, and air pollution control systems that capture over 99% of emissions. One of their standout projects? A turnkey facility in Hiroshima that processes 500 tons of used batteries monthly, all powered by their rotary furnace and配套环保 tech. For businesses prioritizing scalability and compliance, NRT is often the first choice.
2. Osaka Furnace Systems (OFS)
If NRT is the veteran, Osaka Furnace Systems (OFS) is the innovator. Established in 2001, this Kyoto-based company made waves early on with its focus on automation and smart furnace technology. Their paste reduction furnaces aren’t just machines—they’re connected systems, equipped with IoT sensors that monitor temperature, pressure, and emissions in real time, adjusting settings automatically to optimize performance.
OFS’s flagship product, the EcoRotary PRF-800, is a favorite among mid-sized recycling plants. With a processing capacity of 800 kg/hour, it’s compact enough for tight spaces but powerful enough to handle industrial-scale demand. What really sets it apart, though, is its integration with hydraulic press machines. Before paste even reaches the furnace, OFS’s hydraulic presses compress battery scrap into dense blocks, reducing volume by 40% and making smelting faster and more energy-efficient.
“We think of the furnace as part of a ecosystem,” explains Yuki Tanaka, OFS’s sales director. “Our clients don’t just need to melt paste—they need to process entire batteries, manage waste, and meet emissions rules. That’s why we pair our furnaces with air pollution control systems that use advanced scrubbers and filters, ensuring emissions are well below Japan’s strict JIS standards.”
3. Tokyo Eco-Engineering (TEE)
Tokyo Eco-Engineering (TEE) has built its reputation on pushing boundaries. Founded in 1995, this Tokyo-based firm specializes in “green smelting”—furnaces designed to minimize carbon footprints without sacrificing performance. Their signature product, the GreenPaste RF Series, uses a unique indirect heating method that reduces CO2 emissions by 30% compared to conventional models, a feature that’s made TEE a go-to for European and North American clients with aggressive sustainability goals.
TEE doesn’t just focus on the furnace itself; they excel in dry process equipment integration. Their paste reduction systems often include pre-processing units that separate lead paste from plastic casings using air classification (no water needed), cutting down on wastewater and simplifying treatment. “Water is a precious resource, especially in recycling,” says Dr. Aiko Sato, TEE’s chief technology officer. “Our dry process approach not only saves water but also speeds up the entire recycling line—from battery to pure lead in under 4 hours.”
Another TEE standout? Their customer support. The company offers 24/7 remote monitoring for all their furnaces, with a team of engineers ready to troubleshoot issues via video call or on-site visits. For a recent project in Australia, TEE even customized a furnace to handle extreme temperatures, proving their flexibility in meeting unique client needs.
4. Kyoto Heavy Industries (KHI)
Kyoto Heavy Industries (KHI) is a name that carries weight—literally. With roots dating back to 1952, this company has a legacy in heavy machinery, and their paste reduction furnaces reflect that heritage: built tough, designed to last, and capable of handling the most demanding industrial workloads. KHI’s furnaces are often found in large-scale recycling plants processing over 1,000 tons of batteries monthly, thanks to their high-capacity rotary drums (up to 2,000 kg/hour) and robust construction.
What makes KHI unique is their focus on aftermarket support. They offer 10-year warranties on furnace liners (a critical wear part) and have a global network of service centers stocked with spare parts, ensuring minimal downtime. “Our clients run 24/7 operations,” says Masaru Ito, KHI’s service director. “A furnace breakdown isn’t just an inconvenience—it’s a major financial hit. That’s why we invest so much in durability and quick repairs.”
KHI also leads in lead acid battery recycling equipment bundles. Their “Total Solution Package” includes everything from battery crushers to lead ingot casting machines, making it easy for new recycling plants to get up and running. And yes, they’ve kept up with the times: recent models include smart controls that sync with plant management software, allowing operators to track efficiency metrics and adjust settings on the fly.
5. Hiroshima Recycling Tech (HRT)
Hiroshima Recycling Tech (HRT) is proof that bigger isn’t always better. Founded in 2005, this Hiroshima-based supplier specializes in compact, high-efficiency paste reduction furnaces tailored for small to medium-sized recyclers. Their bestseller, the MiniPaste RF-300, is a hit with family-owned businesses and startups, offering a processing capacity of 300 kg/hour in a footprint smaller than a standard shipping container—perfect for facilities with limited space.
HRT’s secret? Simplification. They’ve stripped down unnecessary features while retaining critical ones: precise temperature control, easy access for maintenance, and a user-friendly interface that requires minimal training. “Not every recycler needs a 2,000 kg/hour furnace,” says Kenji Yamamoto, HRT’s founder. “Many just need something reliable that works day in and day out, without a steep learning curve. That’s where we come in.”
Despite their focus on small-scale equipment, HRT doesn’t skimp on环保 compliance. All their furnaces come with a built-in air pollution control system, using activated carbon filters to trap harmful particulates. For clients on a budget, they also offer refurbished models—fully inspected and updated with new parts—at a 40% discount off new prices, making sustainable recycling accessible to more businesses.
6. Nagoya Industrial Systems (NIS)
Nagoya Industrial Systems (NIS) is all about precision. Founded in 1988, this Nagoya-based firm has a background in aerospace manufacturing, and that attention to detail shines through in their paste reduction furnaces. Their ProPaste Series uses computer-aided design (CAD) and 3D modeling to optimize every component, from the drum’s rotation speed to the placement of heating elements, resulting in lead recovery rates that often exceed 99%.
NIS is also a leader in integrated lead acid battery recycling equipment. Their “One Line” system combines battery breaking, paste separation, smelting, and casting into a single, seamless process, with each step controlled by a central PLC. For a recycling plant in South Korea, NIS recently installed a line that processes 1,500 kg of batteries per hour, from shredding to pure lead ingots, with only 3 operators needed to run the entire system.
Another NIS innovation? Their “QuickChange” drum liners. Traditional furnace liners take 8 hours to ｒｅｐｌａｃｅ; NIS’s design can be swapped out in under 2 hours, reducing maintenance downtime significantly. “In recycling, time is money,” says Takumi Watanabe, NIS’s sales manager. “Our clients can’t afford to have a furnace offline for a full day. The QuickChange system is our way of helping them stay productive.”
7. Fukuoka Eco-Machinery (FEM)
Fukuoka Eco-Machinery (FEM) may be the youngest company on this list (founded in 2010), but it’s quickly made a name for itself with its focus on emerging markets. Based in Fukuoka, FEM specializes in affordable, low-maintenance paste reduction furnaces designed for countries with limited infrastructure, offering flexible payment plans and on-site training to help clients get started.
FEM’s EntryPro RF-500 is a prime example. Priced 20% lower than comparable models, it’s designed for simplicity: manual controls (no complex software), easy-to-source replacement parts, and a rugged build that handles voltage fluctuations common in developing regions. “We’ve worked in places where power grids are unstable or technical expertise is scarce,” says Ryohei Tanaka, FEM’s founder. “Our furnaces are built to thrive in those environments.”
Don’t let the “affordable” label fool you—FEM doesn’t compromise on环保. Their furnaces still meet Japan’s strict emissions standards, with air pollution control systems that use locally available materials for filters, reducing replacement costs. A recent project in Vietnam saw FEM install 5 furnaces in rural recycling centers, each processing 500 kg of batteries daily, helping the country reduce its reliance on lead imports.
8. Hokkaido Furnace Works (HFW)
Hokkaido Furnace Works (HFW) is a master of adaptation. Located in Japan’s northernmost island, HFW knows a thing or two about operating in harsh conditions, and their paste reduction furnaces reflect that expertise. Designed to withstand extreme cold, humidity, and even seismic activity, HFW’s ArcticPro Series is a favorite in regions like Canada, Scandinavia, and Russia, where standard equipment often struggles.
HFW’s furnaces feature insulated drums and heated control panels to prevent freezing, as well as reinforced frames to withstand earthquakes—a critical safety feature in active seismic zones. “In Hokkaido, we build machines to survive snowstorms and tremors,” says Yuki Nakamura, HFW’s engineering lead. “That resilience translates to reliability anywhere in the world.”
Beyond durability, HFW excels in water process equipment integration. Their furnaces often include closed-loop water cooling systems that recycle 95% of the water used, a feature that’s invaluable in water-scarce regions. For a client in Mongolia, HFW even added a solar-powered auxiliary pump to their cooling system, reducing reliance on grid electricity and lowering operating costs.
9. Yokohama Recycling Solutions (YRS)
Yokohama Recycling Solutions (YRS) is all about customization. Founded in 1998, this Yokohama-based company prides itself on building paste reduction furnaces tailored to each client’s unique needs, whether that means adjusting capacity, integrating with existing equipment, or meeting non-standard safety requirements.
One of YRS’s most impressive projects? A custom furnace for a European client that processes both lead-acid and lithium-ion batteries (though YRS is quick to note that paste reduction is primarily for lead). The furnace features interchangeable liners—one for lead paste, one for lithium battery black mass—allowing the client to switch between battery types in under an hour. “Flexibility is key in modern recycling,” says Naomi Kato, YRS’s customization specialist. “Our clients don’t want to buy a new furnace every time their needs change.”
YRS also offers comprehensive training programs, sending engineers to client sites for week-long workshops on furnace operation, maintenance, and safety. For a recent project in Brazil, YRS even created a Portuguese-language manual and video series, ensuring local operators felt confident using the equipment.
10. Sendai Heavy Industries (SHI)
Rounding out our list is Sendai Heavy Industries (SHI), a company that merges tradition with cutting-edge technology. Founded in 1960, SHI has a long history in metal smelting, but in recent years, they’ve invested heavily in R&D, resulting in some of the most advanced paste reduction furnaces on the market.
SHI’s NanoLiner technology is a game-changer. The furnace drum is lined with nano ceramic balls, which reduce wear and improve heat transfer, extending liner life by 50% and boosting efficiency by 15%. “Ceramic is harder than steel, so it resists abrasion from lead paste,” explains Dr. Kenjiro Ito, SHI’s R&D head. “The nano particles also conduct heat better, meaning faster melting and less energy use.”
SHI also leads in smart monitoring. Their furnaces come with AI-powered predictive maintenance systems that analyze sensor data to predict when parts might fail, allowing for proactive repairs. For a recycling plant in Germany, this system reduced unplanned downtime by 60% in the first year alone, saving the client over €100,000 in lost production.
| Supplier | Founded | Key Strength | Notable Technology | Target Markets |
|---|---|---|---|---|
| Nippon Recycling Technologies | 1978 | End-to-end lead acid battery recycling equipment | High-efficiency rotary furnace | Global (30+ countries) |
| Osaka Furnace Systems | 2001 | IoT-integrated automation | EcoRotary PRF-800 with real-time monitoring | Mid-sized plants, Asia/Europe |
| Tokyo Eco-Engineering | 1995 | Low-carbon smelting | GreenPaste RF Series (30% lower CO2 emissions) | Europe, North America (sustainability-focused clients) |
| Kyoto Heavy Industries | 1952 | Durability & aftermarket support | 10-year warranty on drum liners | Large-scale industrial plants |
| Hiroshima Recycling Tech | 2005 | Compact, affordable systems | MiniPaste RF-300 (small footprint, low cost) | Small/medium recyclers, emerging markets |
| Nagoya Industrial Systems | 1988 | Precision & integrated lines | ProPaste Series (99%+ lead recovery) | High-volume plants, global |
| Fukuoka Eco-Machinery | 2010 | Emerging market solutions | EntryPro RF-500 (low maintenance, local filter materials) | Southeast Asia, Africa, Latin America |
| Hokkaido Furnace Works | 1975 | Harsh environment operation | ArcticPro Series (cold/humidity/seismic resistant) | Canada, Scandinavia, Russia |
| Yokohama Recycling Solutions | 1998 | Customization | Interchangeable liners for multi-battery processing | Specialized recycling needs, global |
| Sendai Heavy Industries | 1960 | Advanced materials & AI | NanoLiner technology & AI predictive maintenance | Tech-forward plants, Europe/North America |
Choosing the right paste reduction smelting furnace supplier isn’t just about buying a machine—it’s about partnering with a company that understands your goals, your challenges, and the evolving landscape of recycling. The 10 suppliers highlighted here represent the best of Japan’s engineering prowess, each bringing unique strengths to the table: from NRT’s reliability to SHI’s cutting-edge AI, from TEE’s green focus to FEM’s commitment to emerging markets.
As the world moves toward a more circular economy, the demand for efficient, sustainable recycling equipment will only grow. Japan’s paste reduction smelting furnace suppliers are already ahead of the curve, blending decades of experience with innovation to create systems that not only process waste but transform it into opportunity. Whether you’re a small recycler just starting out or a global player looking to upgrade, these companies offer the tools to turn scrap into success—one furnace at a time.
