2026-11-12
Scale
A 50,000 t/yr plant is a large organic fertilizer plant. Renyuan groups manure fertilizer plants into four tiers: powder lines up to 5,000 t/yr, small granular lines of 5,000–20,000 t/yr, medium granular lines of 20,000–40,000 t/yr, and large granular lines of 50,000 t/yr and above.
Manure collection sets the cost
At this scale, manure collection decides much of the processing cost. Dry scraping and separating rainwater from wastewater make processing cheaper. Where manure is flushed or water-soaked, the slurry and solids are handled separately.
Composting and the automated line
Composting uses compost turners together with a manure composting inoculant. The composted material is moved by loader to a semi-finished store, then fed to a fully automated line: crushing, screening, granulation, cooling, granule screening and packing, linked by belt conveyors.
The process comes from Renyuan's own research on aerobic composting of livestock manure with microbial inoculants. It uses a compound inoculant of bacteria, actinomycetes, lactic acid bacteria and yeasts to treat manure and crop straw, raising the availability of nutrients in the finished fertilizer.
Reference equipment list
From Renyuan's published 50,000 t/yr pig manure configuration. B600 belt conveyors link each stage.
| Equipment | Reference specification | Qty |
|---|---|---|
| Automatic feeding hopper | 2,500 × 3,000 mm | 1 |
| Vertical crusher | Ø1,000 mm, rotor 1,450 rpm | 1 |
| Trommel screen | 4.0 × 1.5 m, 24 r/min, 3–5 t/h | 1 |
| Extrusion granulator | 2–5 t/h each | 4 |
| Grading screen | 4.0 × 1.5 m, 22 r/min, 5–8 t/h | 1 |
| Rotary cooler | 1.5 × 12 m, drum 2–5 rpm | 1 |
| Granule packer | 200–400 bags/h, 20–50 kg bags | 1 set |
| Powder packer | 200–400 bags/h, 20–50 kg bags | 1 set |
| Belt conveyors | B600 patterned belt, 2–10 m sections | as required |
Choosing turners for 50,000 t/yr
Composting capacity has to keep pace with the line. Large windrow sites use wide crawler turners: the RY-YFD6000 and RY-YLD6000 turn a 6,000 mm width at reference capacities of 2,574 and 2,772 m³/h. Trough plants use hydraulic RY-ZFP trough turners, up to 4.74 m wide and 1.5 m deep.
Product standards
Renyuan's published configuration is designed for products that meet China's organic fertilizer standard (NY 525) and bio-organic fertilizer standard (NY 884). Producers can also set their own enterprise standards above them. For export markets, tell us the standard your product must meet.
Renyuan equipment for this line
- RY-YFD6000 Fully Hydraulic Crawler Compost Turner
RY-YFD6000 is a fully hydraulic crawler turner with a 6,000 mm turning width. It turns, mixes and aerates organic material in open windrows. Check pile cross-section, spacing between windrows and turning radius together.
- RY-ZFP Hydraulic Trough Compost Turner
A hydraulic-drive trough turner listed with four RY-ZFP models and model-specific dimensions and motor data.
- RY-LC Automatic Feeding Hopper
RY-LC hoppers buffer organic fertilizer material and feed the next process stage. Four RY-LCS sizes have individual footprint, volume and motor data; select for feeding rhythm and material flow.
- RY-FS60 Vertical Crusher
A vertical crusher for reducing fermented organic material before screening or further processing.
- RY-GS Trommel Screen
The trommel screen grades fertilizer material through a rotating screen. Use it after crushing for powder processing or in granule finishing, with apertures and recycle routes matched to the finished-product size.
- RYZL Extrusion Granulator Series
A dry extrusion granulator series listed in RYZL-37, RYZL-55 and RYZL-75 configurations.
- Rotary Cooler
Cools fertilizer material after drying or forming before screening, packing or storage.
- Dual-Scale Belt-Fed Automatic Weighing and Packing Machine
Two alternating weighing systems and belt feeding for mixed, powder-containing, flake or lump materials.
Frequently asked questions
How many granulators does a 50,000 t/yr line use?
Renyuan's published configuration uses four extrusion granulators of 2–5 t/h each.
What composting equipment suits a 50,000 t/yr plant?
Wide crawler turners such as the 6 m RY-YFD6000 and RY-YLD6000 for windrows, or hydraulic trough turners for trough plants.