Eriez says it’s high-intensity Dry Vibrating Magnetic Filter (DVMF) technology holds the key to removing very fine iron-bearing contaminants from hard-to-flow powders, such as lithium, to produce higher quality end-products.

In a recently published white paper, the separation technology leader says the DVMF technology has been validated as the most effective separation process for hard-rock mining lithium applications.

‘Hard Rock Mining: High-Intensity Dry Vibrating Magnetic Filter (DVMF) Removes Fine Iron-Bearing Contaminants Found in Lithium and Other Hard-To-Flow Powders’ was written by Eriez Mining and Minerals Processing Director, Jose Marin.

According to the paper, the DVMF is ideal for both lithium producers and users, with typical DVMF applications including fine sand, glassmaking, talc, clays and various other finely divided industrial minerals and chemical products.

The DVMF uses a high-intensity electromagnet and flux converging matrix, which amplifies the magnetic field and provides high-gradient collection sites for the magnetic material as the feed materials filter through, according to Eriez.

The canister is attached to dual high-frequency, low-amplitude vibratory drives and these drives deliver a strong vibratory action to the canister assembly, which enhances the fluidity of very fine powders, resulting in a smooth and even flow of product through the matrix grid.

On the DVMF’s hard-rock lithium separation credentials, Marin explained: “Eriez 5,000 gauss strength DVMFs reduce contamination to parts per billion, rather than parts per million. These results are a real breakthrough in terms of magnetic contaminant removal in hard-rock mining.”

To learn more about Eriez DVMFs and download this white paper, click here.