Vomat fine filtration: Securing carbide from grinding sludge

Costs Down! Vomat Provides Carbide with a Material Cycle

2026-08-25 Source: Vomat | Translated by AI 3 min Reading Time

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Vomat's coolant fine filtration makes it possible to economically utilize grinding sludge ...

Carbide prices are skyrocketing, as Vomat observes. This makes these materials strategic resources that should be kept in the most closed material cycle possible. Vomat fine filtration technology can help with this ...(Image: Vomat) — Carbide prices are skyrocketing, as Vomat observes. This makes these materials strategic resources that should be kept in the most closed material cycle possible. Vomat fine filtration technology can help with this ...
(Image: Vomat)

As is well known, hard metal is a valuable raw material and currently more expensive than ever before. Since the beginning of 2026, the price of ammonium paratungstate (APT), the most important precursor for tungsten carbide, has more than doubled from 920 USD/MTU at the beginning of January to over 2,090 USD/MTU at the beginning of March. The effects are immediately noticeable: weight surcharges on hard metal rods have risen in the same period from around 32.90 euros per (approx. €14.92 per lb) to over 120 euros per kilogram (approx. €54.43 per lb). With a tungsten content of 85 to 90 percent in hard metal, the calculated material value alone now amounts to around 175 euros per kilogram (approx. €79.38 per lb), making hard metal a strategic material. In the tool and metal industries, the topics of resource efficiency and recycling are therefore coming into focus. For 2026, it is expected that the global market demand will likely not be met. Some tool manufacturers have already responded with daily price calculations or secured hard metal through material options. The market is thus increasingly shifting away from stable supply chains towards short-term procurement strategies. The quality of cooling lubricants plays a crucial role in this, according to Vomat. Clean grinding oils, for instance, form the basis of stable and economical processes. At the same time, the recovery of hard metal from grinding sludge is gaining in importance. How both can be efficiently combined is demonstrated by Vomat's fine filtration technology.

Coolants Remain Usable for a Long Time

Vomat from Treuen has been one of the technological pioneers in fine filtration of cooling lubricants (KSS fine filtration) for many years. The systems—both from the FA series and central filter systems—enable a complete separation of dirty and clean oil in a full-flow process. With a filtration quality of NAS 7, particle sizes of one to three micrometers (approx. 0.000039 to 0.000118 in) are reliably removed. High-performance filters, "intelligent" backwash cycles, and precisely controlled cooling systems ensure that KSS remains in the cycle as long as possible and retains its properties. The result is stable processes and consistently high production quality, as Vomat notes. Modern filtration technology thus allows the clean separation of the finest hard metal particles—directly from the process. The decision for a powerful fine filtration system directly impacts manufacturing costs. Vomat filter technology therefore combines efficiency, process quality, and resource conservation—a triad that is indispensable in modern metal processing.

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Date: 08.12.2025

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