Used Industrial Dryers
For Sale

Used Industrial Dryers for Sale — What We Carry

SIGMA Process Equipment stocks a wide range of used industrial dryers for sale, covering the main dryer types used in chemical, pharmaceutical, food processing, and mineral industries. Our inventory turns regularly; submit an RFQ to get current availability and condition reports.

Used Spray Dryers

A used spray dryer converts a liquid feed into powder in a single step. Atomisation is via a rotary disc or pressure nozzle — conventional hot-air atomisation and electrostatic spray drying (where charged droplets are deflected onto a collecting surface) are both represented in stock at various times. Drying gas is typically heated air or nitrogen. We carry second hand spray dryers in a range of evaporative capacities, chamber sizes, and outlet configurations. Common applications include spray drying of milk powder, detergents, APIs, and chemical powders. Labultima spray dryers and Bowen spray dryers appear in stock periodically — mention your preferred brand when requesting a quote. Spray dryer for sale enquiries are answered within 24 hours.

Used Rotary Dryers and Rotary Drum Dryers

A used rotary dryer — also called a used rotary drum dryer or simply a used drum dryer — is a continuous horizontal drum that tumbles bulk solids through a hot gas stream. It handles high-throughput granular feeds that would be impractical in a batch dryer. We stock carbon steel and SS units across a broad range of shell diameters and lengths. Common applications: minerals, fertilisers, sand, sugar, distillers grains, and bulk chemicals. Rotary dryer for sale, used rotary dryer for sale, and rotary drum dryer for sale are among our most frequently requested types — availability changes weekly.

Used Vacuum Dryers

Used vacuum dryers operate at reduced pressure, enabling drying at lower temperatures — essential for heat-sensitive pharmaceutical intermediates, API crystals, and chemical compounds that degrade or oxidise at atmospheric drying temperatures. Types available:

• Double-cone rotating vacuum dryers — tumbling motion ensures uniform drying with minimal product degradation. Popular in pharmaceutical and fine chemical production.
• Paddle vacuum dryers — continuous or batch; heated paddles provide agitation and heat transfer in a jacketed trough under vacuum.
• Vacuum tray dryers for pharma — static trays in a heated, evacuated chamber. Standard in pharmaceutical industry batch drying.
• Continuous vacuum dryers — for high-volume operations requiring continuous throughput under vacuum.

A vacuum dryer for food duty (fruit, vegetable, or flavour powders) is also available on request.

Used Fluid Bed Dryers

A used fluid bed dryer fluidises particles in an upward airstream, achieving very high heat and mass transfer rates. Batch fluid bed dryers are widely used in pharmaceutical industry granulation and drying; continuous types handle bulk chemicals and food ingredients at high throughput. We stock both used fluid bed dryer for sale in SS 316L pharmaceutical grade and carbon steel industrial types. Second hand fluid bed dryers from major pharmaceutical equipment manufacturers are periodically available.

Used Freeze Dryers (Lyophilizers)

A used freeze dryer — or used lyophilizer — removes moisture by sublimation from a frozen product, preserving structure, flavour, and bioactivity. Key freeze drying advantages over conventional drying: near-ambient temperature processing, minimal shrinkage, full rehydration, and long shelf-life without refrigeration — all critical for biologics, APIs, and premium food ingredients. Used commercial freeze dryers for sale, commercial freeze dryers for sale used, and used lyophilizers for sale in our stock cover shelf areas from pilot to full production scale. Applications span pharmaceutical API lyophilisation, biologics, and spray freeze drying for fine powders. Freeze dryer uses range from bacteria cultures to natural extracts — contact us to discuss your specific application.

Used Tray Dryers and Industrial Drying Ovens

Used tray dryers in pharmaceutical industry provide gentle, uniform drying of small batches in a stainless steel cabinet with recirculating hot air. We also stock used industrial drying ovens for a range of temperatures and tray capacities. These are widely used as a dryer machine for industrial use in chemical and food sectors.

Key Buying Considerations

• Feed form — liquid/slurry (spray dryer), granular solids (rotary dryer), wet cake or crystals (vacuum/fluid bed), frozen product (freeze dryer).
• Throughput — specify evaporative capacity (kg water/h) or solid feed rate (kg/h).
• Temperature sensitivity — heat-sensitive materials require vacuum or freeze drying; robust solids suit rotary and fluid bed options.
• Material of construction — SS 316L for pharma and food contact; carbon steel for bulk mineral and chemical duty.
• Equipment used in drying process — confirm utilities: steam, electric heating, chilled water (for freeze dryers), compressed air.

For a complete list of currently available dryer machine for industrial use, contact us via the form below. We respond to all enquiries within 24 hours.

Common Requests We Fulfil

• Used commercial dryers for sale — food, dairy, and chemical-grade units with CE or ATEX documentation where available.
• Used rotary dryer for sale / used rotary drum dryer for sale — carbon steel and SS, various diameters and lengths.
• Used drum dryer — single- and double-drum atmospheric types for pastes and slurries.
• Used lyophilizer for sale / used commercial freeze dryer for sale / commercial freeze dryer for sale used — pilot to production scale, pharma and food applications.
• Labultima spray dryer and other brand-specific spray dryers — mention brand and capacity when enquiring.
• Electrostatic spray drying systems for fine or low-bulk-density powders.

How Industrial Dryers Work

A brief guide to the operating principles behind each dryer type — useful when comparing options or writing a specification.

Rotary Dryer Working Principle

In a rotary dryer, a slightly inclined rotating drum conveys wet solids from feed end to discharge end while hot gas (co-current or counter-current) flows through the drum. Lifting flights tumble the material through the gas stream, maximising contact and evaporation rate. The rotary dryer working principle suits free-flowing granular solids at high throughput; residence time is controlled by drum angle and rotational speed. A drum dryer working principle variant uses one or two heated, slowly rotating drums onto which a liquid or paste feed is applied as a thin film — the dried film is scraped off as flakes, making it well suited for pastes and slurries rather than free-flowing solids.

Spray Dryer Working Principle

A spray dryer atomises a liquid feed into fine droplets (rotary disc or nozzle) and suspends them in a hot gas stream. Each droplet dries almost instantaneously, producing a free-flowing powder. The short residence time and low particle temperature make spray drying ideal for heat-sensitive products such as dairy, APIs, and flavours.

Fluidized Bed Dryer Working Principle

A fluidized bed dryer passes heated air upward through a perforated distributor plate at a velocity sufficient to suspend (fluidise) the particulate bed. The intimate gas–solid contact gives high heat and mass transfer rates with uniform drying. The uses of fluidized bed dryer — and the use of fluid bed dryer more broadly — span pharmaceutical granule drying and coating, food ingredient drying, and bulk chemical processing. Batch types are standard in pharmaceutical manufacturing; continuous types suit higher-volume industrial duties.

Tray Dryer Working Principle

A tray dryer (tray oven) circulates heated air over product spread on trays stacked inside an insulated cabinet. Heat transfer is by forced convection; the operator removes trays in batches. The tray dryer working principle is simple and flexible — well suited to small batches of pharmaceutical intermediates, laboratory samples, or fragile products that cannot be tumbled or fluidised. A vacuum tray dryer working principle is identical except the cabinet operates under reduced pressure, lowering the drying temperature for heat-sensitive materials.

Vacuum Dryer Working Principle

All vacuum dryers share the same vacuum dryer working principle: reducing the chamber pressure lowers the boiling point of the solvent, allowing drying at temperatures well below 100 °C. Heat is supplied by conduction (heated shelves, jacket, or paddles) rather than convection, protecting heat-sensitive crystals and APIs. A vacuum band dryer working principle extends this to continuous operation — wet feed is applied to a moving belt inside a vacuum-tight tunnel, with heating and cooling zones, and dried product is discharged at the other end without breaking vacuum.

Freeze Dryer Working Principle

A freeze dryer (lyophilizer) freezes the product, then reduces chamber pressure below the triple point of water so that ice sublimes directly to vapour without passing through the liquid phase. The vapour is collected on a refrigerated condenser. Because the product never gets wet again, freeze drying preserves microstructure, flavour, and biological activity better than any other drying method — the basis of its key freeze drying advantages.