Spray Dryer Applications: Food, Pharma, Chemical & More

Spray drying is used wherever a liquid has to become a free-flowing powder quickly and gently. Food is the largest sector at over 40% of applications, followed by pharmaceuticals (~25%) and chemicals (~20%), with growing use in environmental and new-energy materials.

Food (over 40% of applications)

• Dairy — whole and skim milk powder, whey protein, cheese powder; spray drying keeps solubility high (≥98%) and protein denaturation low (<5%), preserving flavour and nutrition.
• Instant drinks — coffee, tea, juice and soy-milk powders; a low outlet temperature (80–90°C) protects aroma and gives fast-dissolving powder.
• Functional food — probiotic, dietary-fibre and collagen-peptide powders; active retention is high (≥90%) with a uniform particle size (D50 50–100μm) ready for tableting or encapsulation.

Pharmaceuticals (~25%)

• Drug materials — antibiotics, vitamins, amino acids and herbal extracts; short, seconds-long drying limits the loss of heat-sensitive components.
• Microencapsulation — coating actives such as probiotics, enzymes and fish oil for controlled or masked release.
• Sterile and biologic — sterile powders and vaccine/enzyme/protein drugs; closed and vacuum operation (≤0.1 MPa) limits oxidation and contamination, with activity retention ≥95%.
• Herbal (TCM) extracts — drying water or alcohol extracts to instant granules, raising purity by 15–20% with active loss under 5%.

Chemicals (~20%)

• Dyes and pigments — iron oxide red, titanium dioxide, phthalocyanine blue, reactive and disperse dyes; a uniform particle size (D50 10–50μm, colour difference ΔE ≤1.5) gives strong tinting strength.
• Catalysts — molecular sieves, alumina, nickel-based catalysts; spray drying builds a porous structure with a high surface area (300–500 m²/g, porosity ≥60%).
• Inorganic salts and oxides — calcium carbonate, sodium sulfate, alumina, white carbon black; avoids the caking of tray drying for a free-flowing powder.
• Polymers — polyurethane microspheres, acrylic and epoxy resins, with controlled particle shape.

Environmental (~10%)

• Sludge — electroplating, printing-dyeing, paper and municipal sludge dried below 10% moisture, cutting volume by 70–80%.
• Waste liquid — recovering solids from paper black liquor, pharmaceutical and electroplating effluents at ≥95% recovery; lignin can be recovered as sodium lignosulfonate.
• Flue-gas desulfurization — drying gypsum slurry into building gypsum.

New-energy materials

• Lithium battery cathodes — LFP and NCM/NCA precursors and lithium cobaltate, controlling particle shape and agglomerate size for cycle life and rate performance.
• Fuel cell and hydrogen — catalyst carriers (carbon nanotubes, graphene) and metal-hydride hydrogen-storage powders.

Other

Ceramics and new materials (narrow distribution, lower sintering temperature), feed additives (vitamin and enzyme premixes), and pesticide and fertilizer formulations (wettable powders, water-dispersible granules).

Performance figures are industry-typical; verify against your own material before relying on them.

See the selection guidance by type, or browse the spray dryer range.