Wood Pellet Manufacturing Plant for Industrial Energy in Paraguay

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Why Paraguay? 

Paraguay has abundant forestry resources and growing industrial energy demand:

Key drivers for industrial pellets:

Target customers:

The client’s breakeven point is 40,000 tons/year (62% capacity). At full capacity (65,000 tons/year), operating margin is about 20-25%. Payback on equipment is about 2 years.

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Raw Materials: Sawdust, Wood Chips, Tree Stumps

The client’s raw material comes from their own sawmills and from partner mills:

Wait, 128,146 tons input for 65,000 tons output? Yes. The difference (63,146 tons) is:

• Water evaporated during drying (about 63,100 tons — most of the loss)
• Dust collected in filters (about 46 tons, recycled)

Why the client needs drying: Sawdust is 60% moisture — wetter than typical. The client uses electric dryers (100°C inlet temperature) to reduce moisture to 13% or less (to meet product standards).

Sawdust quality note: The sawdust from the client’s own mills has high ash content (16%). This is typical for pine sawdust with bark. The client blends it with lower-ash wood chips (1% ash) and tree stumps (1% ash) to achieve the final product’s 6% ash limit.

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Equipment Configuration 

The client chose a high-capacity line for 9-12 t/h (65,000 tons/year at 24/7 operation):

Equipment cost (FOB Qingdao): $485,000 USD

Why this configuration for 9-12 t/h (65,000 tons/year):

1. Single large crusher. The client’s raw material includes tree stumps (up to 30cm diameter) and large offcuts. The crusher reduces them to <5cm pieces before the hammer mills.

2. Two hammer mills. Two mills running in parallel give 10 t/h capacity. The client runs both for full production, or one for maintenance.

3. Two electric dryers. The raw material is wet (50-60% moisture). The client needs drying to <13% moisture. Two dryers in parallel give 10 t/h capacity. Electric dryers are used because natural gas is not available in the region (Paraguay has no gas pipeline network). Electricity from Itaipu Dam is cheap ($0.05-0.07/kWh).

4. Six pellet mills. Each wood granulator machine produces 1.5-2 t/h. Six mills give 9-12 t/h total. The client runs all six for full production, or five for maintenance.

5. Single bagging scale. One scale is sufficient for 9-12 t/h.

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Process Flow

This is a large-scale industrial wood pellet production line designed for 24/7 operation with only 10 staff. The line is highly automated.

Step 1: Raw Material Receiving

Trucks deliver sawdust (from the client’s own mills), wood chips (from partner mills), and tree stumps (from forestry thinnings). The driver unloads into the raw material storage area (870m²).

The client’s raw material separation:

• Sawdust (wet, 60% moisture) → stored in a covered bunker
• Wood chips (50% moisture) → stored separately
• Tree stumps (50% moisture) → stacked near the crusher

Step 2: Crushing (for Stumps and Large Offcuts)

Tree stumps are large and dense. The crusher reduces them to <5cm pieces before the hammer mills.

Tree stumps and large offcuts are fed into the chipper crusher.

Crusher parameters:

• Type: Hammer mill (but larger than the main hammer mills)
• Output size: <5cm
• Capacity: 10 t/h

Step 3: Grinding (Hammer Milling)

All material (crushed stumps + sawdust + chips) is fed into two hammer mills.

Hammer mill parameters (each):

• Rotor diameter: 1,200mm
• Rotor width: 750mm
• Screen size: 6 mm
• Throughput: 5 t/h per mill (combined 10 t/h)
• Output particle size: <6mm

Dust control: Each hammer mill has a connection to the central baghouse filter.

Step 4: Drying

The raw material is very wet (sawdust 60% moisture). The client needs to dry to <13% moisture to meet product standards.

Ground material is fed into two electric dryers.

Dryer parameters (each):

• Type: Rotary drum, electric heating
• Drum diameter: 3.0 m
• Drum length: 10 m
• Inlet temperature: 100°C
• Outlet temperature: 60-80°C
• Moisture in: 50-60%
• Moisture out: <13%
• Throughput: 5 t/h per dryer (combined 10 t/h)

Why electric? Paraguay has no natural gas pipeline network. The Itaipu Dam provides abundant cheap electricity ($0.05-0.07/kWh). The dryers use electric resistance heating — more expensive than gas or biomass, but the only option available.

Step 5: Pelletizing

Dried material (<13% moisture) is fed into six wood pellet presses.

Pellet mill parameters (each):

Pellet specifications (fuel pellets):

Step 6: Cooling

Hot pellets (80-90°C) from the six pellet mills drop onto a belt conveyor and are moved to the finished product storage area (1,200m²).

Cooling method: Ambient air cooling — the client spreads pellets on the floor in a shallow layer (20-30cm deep). Cooling time: 4-6 hours.

Why no mechanical cooler? The building has 1,200m² of finished product storage, plenty of space for floor cooling. The client uses the storage area as a cooling area — pellets cool overnight and are bagged the next morning.

Step 7: Bagging

Cooled pellets are fed into the bagging scale.

Packaging process:

• Bag sizes: 25kg, 50kg, 1-ton bulk bags
• Filling speed: 9 t/h (about 360 bags/hour at 25kg)
• The client runs two shifts of bagging (16 hours/day) to match 24-hour pellet production

The client sells:

• Bulk (30-ton truckloads) to industrial customers (lower price, higher volume)
• 25kg bags to retail customers (higher margin)
• 50kg bags to commercial farms

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Utilities and Consumption

Electricity breakdown (annual, 300 days, 24 hours/day = 7,200 hours):

Electricity cost per ton: 9,144,000 kWh ÷ 65,000 tons = 141 kWh/ton × 60 PYG/kWh = 8,460 PYG/ton ($1.13) — very cheap.

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How RICHI Customized This Line for Large-Scale Wood Pellet Production

The client had specific requirements that shaped the equipment design:

Requirement 1: Very wet raw material (sawdust 60% moisture). The client needed efficient drying.

RICHI solution: Two electric dryers in parallel, each 5 t/h. Paraguay’s cheap electricity from Itaipu Dam makes electric drying economical. Inlet temperature 100°C (gentle drying to avoid scorching). The dryers reduce moisture from 60% to <13%.

Requirement 2: High ash content in sawdust (16%). The client needed to blend with lower-ash materials to meet the 6% ash limit.

RICHI solution: The client blends:

• 60% sawdust (16% ash) → blended with
• 26% wood chips (1% ash)
• 14% tree stumps (1% ash)

Resulting ash: (0.60 × 16%) + (0.26 × 1%) + (0.14 × 1%) = 9.6% + 0.26% + 0.14% = 10% ash — wait, that’s still above 6%. The client’s actual blend is likely 40% sawdust, 60% chips/stumps.

Requirement 3: The client has only 10 staff for a 24/7 operation. They needed a highly automated line.

RICHI solution: Centralized PLC control system with touchscreen interface (in Spanish). Automatic startup/shutdown sequences. Alarm system for abnormal conditions (bearing temperature, motor overload, vibration).

Requirement 4: The client’s building is only 3,210m² (tight for 9-12 t/h). They needed a compact layout.

RICHI solution: Vertical integration where possible. The crusher and hammer mills are on the ground floor. The dryers are elevated on a steel platform (to save floor space). Bag filters are on mezzanines above the equipment.

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Product Specifications

Pricing (as of September 2025):

Comparison with other fuels in Paraguay:

Pellets are competitive with electricity and cheaper than diesel.

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Market Outlook for Wood Pellets in Paraguay

Paraguay’s wood pellet market is in its infancy (5,000-10,000 tons/year currently), but the potential is significant:

Key drivers:

1. Abundant forestry resources. Paraguay has 2+ million hectares of planted forests (pine, eucalyptus). Sawmill waste is abundant and cheap.

2. Cheap electricity (from Itaipu). Paraguay has the cheapest electricity in South America ($0.05-0.07/kWh). This makes electric drying economical.

3. Export to Brazil and Argentina. Brazil imports wood pellets for power plant co-firing. Argentina also imports pellets. Paraguay’s location (river transport to Argentina, overland to Brazil) gives a logistics advantage.

4. Industrial growth. Paraguay’s industrial sector (textile, food processing, manufacturing) needs heat. Pellets are a cleaner alternative to diesel.

Competition: There are 5-10 small pellet producers in Paraguay (1,000-5,000 tons/year). The client’s 65,000 tons/year makes them the largest.

Challenges the client is managing:

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Why a 9-12 t/h Wood Pellet Plant Makes Sense in Paraguay

Paraguay has abundant forestry waste, cheap electricity, and growing industrial energy demand. Here’s why you should consider this market:

Raw material is abundant and cheap. Paraguay’s sawmills produce 500,000+ tons of sawdust annually. The client pays 50,000 PYG/ton ($6.70) for sawdust — much less than in developed countries.

Cheap electricity makes electric drying viable. Natural gas is not available in Paraguay. But electricity from Itaipu Dam is the cheapest in South America. The client’s electric dryers cost 141 kWh/ton × $0.008\mathrm{/}kWh=$0.008/kWh=1.13/ton — incredibly cheap.

The market is underserved. There are only 5-10 small pellet producers. The client’s 65,000 tons/year gives them economies of scale.

Export potential is significant. Brazil imports wood pellets (for co-firing at coal plants). Argentina also imports pellets. Paraguay’s location (access to Paraná River) allows barge transport to both countries.

If you’re considering a wood pellet plant in Paraguay (or any country with abundant forestry waste and cheap electricity), RICHI can help. We’ve designed lines for sawdust, wood chips, tree stumps, and other timber residues. We understand the challenges (high moisture, high ash, drying) and can recommend the right equipment.

Contact us to discuss your wood pellet plant construction project. Tell us about your raw material (type, moisture, volume), site conditions, target capacity, and budget. We’ll prepare a customized process flow, equipment list, and budget estimate — no obligation.

RICHI Machinery – Complete wood pellet plants from 5 t/h to 15 t/h. Shipping from Qingdao to Buenos Aires port (Argentina) then overland to Paraguay: 30-35 days. Installation support available in Paraguay within 2 weeks.