DIRECT ROTARY DRUM DRYER COMPONENTS AND PARTS

ROTARY DRYERS

Our Rotary Dryers are custom engineered to reach optimum drying efficiency.

DIRECT ROTARY DRUM DRYERS

We’ve built a reputation on building the best rotary dryers in the industry. All of our dryers are custom designed to suit the unique processing needs of your material. Whether you require low or high inlet temperatures, short or long residence times, counter current or co-current flow, winnermac’s design team can design a rotary drum dryer for your application.

Rotary dryers are a highly efficient industrial drying option for bulk solids. They are often chosen for their robust processing capabilities and their ability to produce uniform results despite variance in feedstock.

Rotary dryers work by tumbling material in a rotating drum in the presence of a drying air. They can also be indirectly heated to avoid direct contact between the material and processing medium.

The drum is positioned at a slight horizontal slope to allow gravity to assist in moving material through the drum. As the drum rotates, lifting flights pick up the material and drop it through the air stream in order to maximize heat transfer efficiency. When working with agglomerates, the tumbling action imparted by the dryer offers the added benefit of further rounding and polishing the granules.

FEATURES

Diameter: 3′ – 15′ (1 – 4.6m)

Capacity: 1 TPH – 200 TPH (1 MTPH – 181 MTPH+)

Specially designed lifting flights to maximize heat transfer between the material and hot gas stream

Heavy duty design and construction for many years of service

Co-current (parallel flow) or counter-current configuration

Process and Mechanical Warranties

Various Drive Assemblies Available

Optional Components

Knocking Systems

Trommel Screen

Liners

Leaf Seals

Graphite Seals

Machined Bases

Screw Conveyor Feeder

Automatic Gear Lubrication System

Exhaust Handling Equipment

Ductwork

Material Options

Carbon Steel

Stainless Steel

Specialty Alloys

Explosion Bonded

AR Steel

Accommodates Various Fuel Types

Fuel Oil

Natural Gas/Propane

Waste Heat

Biogas

We can offer cost competitive designs for pilot scale units that process as little as one ton per hour to heavy duty units in excess of 17 foot in diameter that process hundreds of tons per hour.

DIRECT ROTARY DRUM DRYER COMPONENTS AND PARTS

The image below shows the standard components of a rotary dryer. Click image to view larger.

A – Burner

B – Combustion Chamber

C – Raw Material Feed Chute

D – Riding Ring/Tire

E – Gear/Sprocket Guard

F – Flights

G – Exhaust Handling System

H – Discharge Breeching

I – Product Discharge

J – Drive Assembly

K – Drum Shell Riding Ring

L – Graphite Block Lubrication Assembly

M – Trunnion Wheel

N – Trunnion Guard

O – Pillow Block Bearing

P – Thrust Roller Assembly

Q – Coupling Guard

R – Gear Reducer

S – Pinion Gear

T – Girth Gear

For more detailed component descriptions, see the Rotary Dryer Parts and Components Glossary.

APPLICATIONS & MATERIALS

Rotary dryers are known as the workhorse of industrial dryers. They are able to process a wide variety of materials, and can lend a hand in nearly any industry requiring industrial drying solutions. Some of the most common industries and materials in which rotary dryers are employed include:

 Aggregates

Agricultural By-Products

Animal Feeds

Biomass

Biosolids (Municipal Sewage Waste & Sludge)

Fertilizers

Fly Ash

Gypsum

Inorganic Chemicals

Limestone

Manure

Metal Chips & Shavings

Mining Ores & Concentrates

Organic Chemicals

Paper Sludge

Plastic Pellets & Grains

Potash

Reclaimed Dust

Rubber Pellets

Salts & Sugars

Sand

Steel Mill Waste Sludges

Urea Prills & Crystals

INDIRECT ROTARY DRUM DRYERS

Unlike direct dryers, indirect dryers do not rely on direct contact between the material and process gas to dry the material. Instead, the rotating drum is enclosed in a furnace, which is externally heated. Contact with the heated drum shell is what dries the material.

While indirect dryers are less efficient compared to their direct counterparts, they offer some advantages that can make them an attractive alternative. This includes:

Less exhaust air treatment

No risk of entrainment of fine materials

Precise temperature control along the length of the dryer can be achieved

FEATURES

Diameter: 3′ – 15′ (1 – 4.6m)

Capacity: 1 TPH – 200 TPH (1 MTPH – 181 MTPH+)

Heavy duty design and construction for many years of service

Process and Mechanical Warranties

Various Drive Assemblies Available

Optional Components

Knocking Systems

Trommel Screen

Liners

Machined Bases

Screw Conveyor Feeder

Automatic Gear Lubrication System

Exhaust Handling Equipment

Various Burner Configurations

Ductwork

Various Seal Options

Material Options

Carbon Steel

Stainless Steel

Specialty Alloys

Explosion Bonded

AR Steel

Accommodates Various Fuel Types

Fuel Oil

Natural Gas/Propane

Electricity

Waste Heat

Biogas

INDIRECT DRUM DRYER COMPONENTS AND PARTS

The image below shows the standard components of an indirect rotary dryer. Click image to view larger.

A – Material Inlet

B – Gear/Sprocket Guard

C – Riding Ring

D – Furnace

E – Exhaust Vent(s)

F – Air Seal

G – Spring/Leaf Seal

H – Seal Mounting Flange

I – Seal Wear Surface

J – Discharge Breeching

K – Gas and Air Piping

L – Burners

M – Advancing Flights

N – Inlet Breeching

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