Abrasives manufacturing has always been materials-intensive. Every cutting disc, grinding wheel, and flap disc starts with raw mineral grain — aluminum oxide, silicon carbide, or ceramic alumina — processed at high temperatures, then bonded and formed into products that end up, after a few hours of hard use, in the bin. That linear path — mine, make, use, discard — is now being challenged.
Finnish manufacturer Mirka has built what it describes as the world's first circular grain manufacturing plant, designed to convert used abrasive waste and industrial by-products back into usable abrasive grains. Brought online in late 2025, the facility is expected to yield its first circular abrasive products to market in 2026 — a genuine turning point for an industry that has changed little in its fundamental raw-material model for decades.
How Circular Grain Manufacturing Works
Mirka's CIGMA (Circular Grain Manufacturing) plant sits on the company's production campus in Jeppo, Finland. The 7,000 m² facility represents a €25 million investment, with €5.89 million co-funded through Business Finland as part of the EU Recovery and Resilience Facility.
The process takes two types of input — production scrap from Mirka's own factories and spent abrasive materials returned by end users — and reprocesses them into new ceramic and abrasive grain that feeds back into standard manufacturing lines. Mirka estimates the plant will reduce its own CO₂ footprint by approximately 5,000 tonnes per year. The company has set a target of 70% circularity across its product portfolio by 2035, with CIGMA as the core infrastructure to get there.
Part of a Bigger Shift
CIGMA is one piece of a broader transformation underway at Mirka. The company has historically been known for coated abrasives — sanding discs, sheets, and belts — but has spent recent years assembling a full-spectrum grinding portfolio. In September 2025, Mirka acquired the conventional bonded abrasives division of Hermes Schleifmittel GmbH, including a manufacturing facility in Uetersen, Germany. Combined with earlier acquisitions of superabrasive specialist Cafro (2017) and dressing roll maker URMA Rolls (2021), Mirka now manufactures across the complete range of precision grinding products.
The company showcased this full lineup at GrindingHub 2026 in Stuttgart (May 5–8), with an emphasis on process control, surface consistency, and performance in demanding production grinding environments.
A Signal for the Wider Market
Mirka is not alone in pushing sustainability in abrasives. VSM's XELERION structured fine abrasive — which earned the German Innovation Award in 2025 — extends disc life through geometric grain efficiency, reducing material consumption per job. With the global abrasives market projected to reach approximately USD 43 billion in 2026, leading manufacturers increasingly cite sustainability, raw-material security, and energy efficiency as top investment priorities.
What makes CIGMA stand out is that it targets the grain itself — the fundamental raw material. If recycled ceramic grain performs comparably to virgin material at commercial scale, it sets a precedent the rest of the industry will need to respond to.
What This Means for WA Customers
For fabricators, welders, and shop owners buying abrasives in Canada, circular products are not yet on distributor shelves. But the direction of the industry is worth understanding now.
- Eco-labelled abrasives are coming. Expect to see claims about recycled grain content and lower CO₂ per disc appearing in catalogues over the next few years. These will be legitimate differentiators, not just marketing language.
- Performance is not the tradeoff. Mirka is developing circular grain to meet the same cut-rate and finish standards as conventional ceramics. Buyers should not have to choose between sustainable and effective.
- The most sustainable abrasive is one that lasts. Regardless of how grain is made, using fewer abrasive products per job — through correct product selection, appropriate grit sequence, and proper speed and pressure — is the most impactful step any shop can take right now to reduce both waste and cost.
Choosing quality abrasives from established manufacturers, rather than economy products that wear out twice as fast, remains the single most practical move for a lower-waste, lower-cost operation.
Browse our full selection of cutting discs, grinding wheels, flap discs, sanding belts, and more at whitbyabrasives.ca/collections/all.
Frequently asked questions
What does "circular" mean when applied to abrasives?
Circular refers to a manufacturing model where spent abrasive materials and production waste are recovered and reprocessed into new abrasive grains rather than sent to landfill. Mirka's CIGMA plant in Finland is the first facility purpose-built to do this at industrial scale.
Does grain made from recycled material perform as well as conventional grain?
According to Mirka, yes — circular grain is engineered to meet the same cut rate and finish standards as virgin ceramic grain. The €25 million investment scale signals that Mirka is targeting volume commercial production, not a premium niche.
What can Canadian shops do today to reduce abrasive waste?
Choose quality abrasives matched to the task. Premium ceramic grain discs and wheels last significantly longer than economy products, meaning fewer consumed per hour of work. Correct technique — consistent pressure, appropriate speed, and proper grit progression — extends abrasive life further and reduces cost per part.