2025-07-21
The sand mill, which is the “grinding expert” of the industrial sector, has recently seen a significant increase in value. With the surging demand for sand in new energy vehicle batteries and 3D printing, the global sand mill market is projected to exceed 5 billion USD by 2025, with Chinese manufacturers capturing 60% of the market share.
The most in-demand models are nano-level sand mills, capable of grinding materials finer than flour. Lithium-ion battery companies are scrambling for them—the grinding precision of positive and negative electrode materials directly determines battery lifespan. A leading manufacturer recently invested 200 million yuan to introduce a German production line, only to discover that domestically produced sand mills achieve 20% higher grinding efficiency, prompting them to immediately place a large order with a Hefei-based equipment manufacturer.
The 3D printing sector is pushing the boundaries even further. Lianxin Casting Sand sells 20,000 tons of 3D printing sand annually, thanks to custom-made sand mills that control particle size within a 0.1mm tolerance. Over 200 foundries are now on a waiting list for supplies. Even more innovative is a “shared sand mill” service launched by a Shandong-based factory, where companies can scan a QR code to rent nano-grinding services by the hour, saving 80% on costs compared to purchasing their own equipment.
However, industry experts caution: don't just focus on grinding fineness; sealing performance is the key. Last year, a chemical plant purchased a used sand mill to save costs, but ended up with graphene slurry leaking all over the floor, resulting in losses of over 3 million yuan. Now, savvy buyers insist on the “all-ceramic inner liner + intelligent lubrication” combination, which is more expensive but can last for ten years without breaking down.
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