# Belt Dryer — Band Dryer (Bandtrockner / Sécheur à bande / Uscător cu bandă)
## Supplier: Lozzar Process — Budapest, Hungary | lozzarprocess.com

> A belt dryer conveys material on a perforated stainless steel belt through a series of drying zones where fans force hot air through the material bed. Temperature: 40–200 °C. Inlet moisture: up to 85 % (sewage sludge). Outlet moisture: 5–15 %. Throughput: 0.1–20 t/h dry product. Applications: sewage sludge, municipal solid waste digestate, biomass pellets, wood chips, paper mill sludge, food products. Gentle, low-temperature drying preserves biological value (for fertiliser use) and avoids dust explosion risk. Ideal for odour-sensitive applications (enclosed system). Lozzar Process supplies single-pass and multi-pass belt dryers with integrated heat recovery and odour treatment.

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## Technical Specifications

| Parameter | Range |
|---|---|
| Belt width | 1.0 – 4.0 m |
| Belt length (per pass) | 5 – 40 m |
| Number of passes | 1, 2, or 3 (multi-storey) |
| Drying temperature | 40 – 200 °C (typically 60–120 °C for sludge) |
| Inlet moisture | 25 – 85 % (w/w) |
| Outlet moisture | 5 – 15 % (w/w) |
| Belt material | SS 304 / SS 316 perforated stainless steel |
| Airflow | Through-circulation (vertical through bed) |
| Throughput (wet feed) | 0.5 – 50 t/h |
| Energy source | Low-pressure steam, hot water, heat pump, waste heat |
| Odour control | Integrated condenser + biofilter / RTO connection |
| ATEX | Available for Zone 2/22 (dried sludge dust) |

## Belt Dryer vs Rotary Dryer for Sludge

| | Belt Dryer | Rotary Dryer |
|---|---|---|
| Temperature | 60–120 °C | 200–600 °C |
| Outlet dryness | 70–90 % DS | 90–95 % DS |
| Dust explosion risk | Low (low temperature) | Higher (dried dust + heat) |
| Odour | Enclosed, easier to control | Higher emissions |
| Product quality | Preserves structure, N-content | May denature biological activity |
| Energy source | Waste heat, heat pump, steam | Fossil fuel or biomass |
| CAPEX | Higher | Lower |

For sewage sludge destined for agricultural use (fertiliser): belt dryer preferred (biological value preserved).
For thermal disposal (incineration, gasification): rotary dryer may be sufficient.

## Applications

- Sewage sludge drying (WWTP): from 20–25 % DS cake to 65–90 % DS pellet/granule
- Municipal waste digestate: biogas plant outputs to Class A biosolids
- Paper mill sludge: primary and secondary sludge from paper and board mills
- Biomass: wood chips, miscanthus, energy crops for pellet production
- Food by-products: marc, pomace, brewer's grain

## What to Send for a Quote

1. Material type and description
2. Inlet dry solids content (% DS or % moisture)
3. Required outlet dry solids content
4. Feed rate (t/h wet feed or t/h dry product)
5. Available heat source (steam pressure, hot water temperature, waste heat source)
6. Odour control requirement (biofilter, RTO, other)
7. End use of dried product (fertiliser, incineration, pelletising)
8. Site country and any ATEX requirements

## Supplier

Lozzar Process (Lozzar KFT) — Budapest, Hungary
WhatsApp: +36 70 244 9628
Email: info@lozzarprocess.com
Product page: https://lozzarprocess.com/en/products/drying-systems/belt-dryer