Vibratory Screening for Sugar and Confectionery

Granulated sugar scalping generally runs 16 to 40 mesh, with powdered and icing sugar grading moving to 40 to 60 mesh. Sugar picks up moisture readily, so lump formation and screen blinding drive most specification decisions.

What makes sugar hard to screen

Moisture pickup and caking

Sugar is hygroscopic. Even modest humidity produces lumps that must be broken on the deck, and the same moisture makes those lumps stick to the wire and blind it.

Wide crystal size range

Coarse sanding sugar, standard granulated, caster, and icing sugar span a large particle range. A single mesh will not serve several grades — the deck has to be matched to the product.

Lump breaking versus contamination removal

These are different jobs. Scalping for foreign material can run coarse; de-lumping icing sugar needs a finer deck and usually a de-blinding aid.

Sticky residues at cleanout

Sugar residue left on a screen hardens. Screens that come apart quickly for washdown save more time than a marginal mesh improvement.

Recommended mesh ranges

Mesh range	Approximate opening	Typical purpose
16 – 30 mesh	1,180 – 600 µm	Coarse granulated sugar scalping and contamination removal
30 – 40 mesh	600 – 425 µm	Standard granulated sugar screening
40 – 60 mesh	425 – 250 µm	Powdered, icing, and fine sugar grading

Breakdown taken from ScreenerKing's existing sugar mesh-size guidance. Note the Food & Beverage industry table quotes a slightly wider 12–40 mesh range for sugar.

These are sieve-standard openings. Actual woven wire cloth openings vary with wire diameter, so the figures on our mesh and wire sizing chart will read slightly smaller for the same mesh count — check that chart for the cloth you are ordering, and talk to us if the product sits between two ranges.

Screen material and configuration

304 stainless steel is standard for dry sugar screening. Where moisture and cleaning chemistry are more aggressive, 316 is the safer specification.

Where blinding is the limiting factor, self-cleaning sandwich screens and de-blinding ball trays and kits generally recover more throughput than changing mesh count.

Common problems and what actually fixes them

Screen blinds on powdered sugar

Moisture plus fine particle size. Self-cleaning sandwich screens with ball trays are the standard fix.

Lumps passing through to packaging

The deck is scalping rather than de-lumping. A finer mesh combined with a de-blinding aid breaks lumps instead of carrying them over.

Capacity too low on granulated product

Check whether the mesh is finer than the job requires — contamination removal often runs comfortably at 16–30 mesh.

What ScreenerKing supplies for this application

We make replacement screens for round vibratory separators, plus the parts that go with them — gaskets, springs and spools, frames and covers, and motors. Screens are available to fit Sweco, Kason, Midwestern Industries, Cleveland Vibratory, and Russell Finex machines — see the full brand compatibility guide.

If you are running a machine that needs a new screen rather than a new separator, our rescreening service re-covers your existing frames.

Sugar & Confectionery screening FAQs

What is the most common mesh size for granulated sugar?

Most granulated sugar screening uses 16–40 mesh, with 30–40 mesh typical for standard product.

How do I stop sugar blinding the screen?

Control feed moisture where possible and use a self-cleaning screen configuration with ball trays or another de-blinding aid.

What mesh is used for powdered sugar?

Powdered and icing sugar grading generally uses 40–60 mesh.

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