Metal powders

Powder metallurgy needs fine classification at the micron level. KROOSH multi-frequency screeners are perfect for such tasks.

Multi-frequency classifiers in most cases are the only solution for control screening and classification of dry powder materials with a given performance and quality on meshes from 15 to 500 microns.

Sizing of extra fine powders
Multi-frequency classifying screens successfully perform control screening of powders with an average Fisher size FSSS = 0.8-2.3 μm on meshes with an aperture size of 45 μm and above with simultaneous deagglomeration of the powder and continuous self-cleaning of the mesh.

Metal powders

Screening of metal powders is a challenging task:

Particle size are at the micron level.
The spec of the good product is very high.
There should be no loss of product in screenings, because the product itself is very expensive.

Also, the product is quite abrasive.

In many cases multi-frequency screeners are the only solution for control screening and classification of
dry powder materials with a given capacity and quality.

Metal powders (Tantalic)

Purpose:

to increase production capacity of the tantalic metal powder production line as well as to increase the product quality.

Application:

fine classification of metal powders.

KROOSH Results:

high-spec product after the fine screening.

Reason of installation:

new line

Product:

a tantalic powder of different types (cut points 0.04mm, 0.1mm, 0.3mm … 1.0mm).

Metal powders (Carbonyl Iron)

Purpose:

Control screening at the 40 microns threshold before packaging the finished product. Production capacity is 600 kg per hour, with allowable losses of the commercial fraction not exceeding 1.5%. The commercial product is the undersized fraction.

Application:

ultra-fine screening of metal powders.

KROOSH Results:

Product fraction losses are less than 1.0% at the specified production capacity.

Reason of installation:

When screening on conventional vibrating sieves, the losses of the commercial product "40...0" µm in the oversized fraction reached up to 10%, and the sieve cells frequently clogged.

Product:

Dispersed powders of carbonyl iron 0/40 µm.

Metal Powders (Tungsten Carbide)

Metal Powders (Tungsten carbide)

Purpose:

Sieving tungsten carbide powders with the separation of the 0/45µm fraction, with a production capacity of up to 600 kg per hour. The commercial product is the undersized fraction.

Application:

ultra-fine screening of metal powders.

KROOSH Results:

Precise separation at the specified threshold with minimal losses of the commercial product.

Reason of installation:

Sieve meshes clogging and loss of commercial product in the oversized fraction while screening at conventional (single-frequency) screeners,

Product:

Tungsten carbide powders

Metal Powders (Copper)

Metal powders (Copper)

Purpose:

Sieving of electrolytic copper powders with separation into fractions <100, 71, 63, 45 µm. Production capacity of up to 1200 kg per hour. Product spec is min.95%. The commercial product is the undersized fraction.

Application:

ultra-fine screening of metal powders.

KROOSH Results:

Precise separation of powders at the specified separation thresholds with the declared quality, and the sieves are self-cleaning.

Reason of installation:

Sieve clogging and loss of commercial fraction due to the complex branched (dendritic) shape of copper powder particles. The multi-frequency vibrating (MFV) screening technology's solved the clogging issue.

Product:

electrolytic copper powders.

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