Coffee Grounds Dryer

Industrial rotary coffee grounds dryer removes excess moisture from waste coffee residues. Energy-saving design, large throughput, low dust emission for biomass fuel & feed processing projects.

Our coffee grounds rotary dryer is specialized industrial drying equipment designed to process high-moisture spent coffee grounds from coffee factories, beverage plants and instant coffee manufacturers. Fresh discarded coffee residues usually contain 55%~70% inherent moisture; after drying via our rotary dryer, material moisture can drop to 8%-12%, meeting standard requirements for biomass pellet production, animal feed raw material and organic fertilizer processing.
Matching with built-in cyclone dust collector as shown on layout drawing, the whole drying system achieves sealed low-dust production, effectively solving stickiness, agglomeration and uneven drying troubles of high-protein coffee grounds. Energy-saving heating design cuts unit fuel cost, ideal for medium & large coffee waste recycling projects worldwide.

• Anti-sticking Internal Flight Design: Custom lifting plates specially developed for sticky high-protein coffee grounds, prevent material agglomeration and inner cylinder bonding, improve final drying uniformity.
• Precise Moisture Control: Adjustable hot air temperature and rotating speed, flexibly control finished coffee grounds moisture between 8%~15% as customer’s downstream demand (pellet/feed/fertilizer).
• Energy Saving & Low Running Cost: Multi-layer heat insulation on cylinder outer wall reduces heat loss, saves 18%-25% heat consumption vs ordinary industrial dryers.
• Complete Dust Removal System: Matched cyclone dust collector solves flying powder problem during coffee grounds drying, clean production for EU, Southeast Asia environmental compliance.
• Large Continuous Output: Support 24h non-stop running, single set hourly capacity ranges from 1t/h to 15t/h for different production scales.

• Spent coffee grounds recycling from instant coffee factory & coffee beverage processing plant
• Raw material drying before coffee grounds biomass pellet making
• Animal feed factory (coffee residue as feed additive raw material drying)
• Organic fertilizer production using coffee waste as fermentation material
• Coffee shop chain centralized waste coffee residue recycling project

Wet coffee grounds are transported into rotary cylinder via feeding conveyor. As the cylinder slowly rotates, internal lifting flights lift and drop raw materials repeatedly to form full suspension contact with high-temperature hot air inside the barrel. Moisture inside coffee grounds quickly evaporates into water vapor, which is discharged together with fine dust via exhaust pipeline into cyclone dust collector for separation. Clean waste gas is exhausted, collected fine coffee powder returns to finished product, and dried low-moisture coffee grounds discharge from dryer outlet for further deep processing.

• Rotary Dryer Cylinder: Main drying host with optimized internal lifting flight structure, repeatedly flipping coffee grounds to realize full contact with hot air, no material sticking on inner wall.
• Cyclone Dust Collector: Installed at exhaust outlet to capture fine coffee dust, reduce air pollution and recycle tiny powder raw materials, comply with global environmental discharge standards.
• Automatic Feeding Conveyor: Screw/belt feeding device to continuously send wet coffee grounds into dryer, avoid manual feeding waste and dust overflow.
• Drive & Supporting Base: Heavy-duty roller support + variable frequency drive motor, stable low-noise long-time continuous operation.

Case 1: 2T/H Coffee Grounds Dryer | Indonesia Coffee Processing Factory

Case2:5T/H Coffee Waste Drying Line | Colombia Coffee Group