Animal manure
Cattle, pig or poultry manure. High moisture and nitrogen; needs a dry, carbon-rich partner.
01 · Complete production solution
Compost Fertilizer Production Line
Fermentation, maturation, crushing and screening without a granulation stage, for markets where a loose compost product is sold as-is or blended rather than pelleted.
02
Quick answer
What this line is
This route stops before granulation. It turns raw organic waste into a screened, saleable compost powder: fermentation, maturation, crushing, screening and packing. Granulation is an option, not a default.
The fermentation yard, not the machine hall, is the centre of this line; sizing and packing are the finishing steps.
03
Inputs
Suitable raw materials
Almost any organic stream can be composted. What decides the layout is moisture, C/N ratio and how much bulking agent the site can absorb.
Crop residue
Straw, husk or stalks. Provides structure and carbon; usually needs shredding first.
Food & green waste
High moisture and easily degraded. Requires fast turnaround and odour control.
Bulking agent
Wood chips, rice husk or returned compost to keep porosity through the windrow.
Compost starter
Optional. Useful on cold starts or when the indigenous population is weak.
04
Output
Target finished product
The product is a screened powder. Its value depends on maturity, moisture and particle size, not on granule strength.
Maturity
Finished compost must pass a maturity check; immature material reheats in the bag and burns roots.
Particle size
Typical 0–10 mm after screening, with an oversize return to the crusher.
Moisture
Held low enough to bag and stack without leachate or mould.
Contaminants
Plastic, glass and stones removed before screening; this decides whether the product can be certified.
05
Production sequence
Process flow
Six stages, and the first two take the longest. Sizing and packing are quick; fermentation is where the schedule is won or lost.
| Stage | Purpose | Key equipment | Control point |
|---|---|---|---|
| 1. Fermentation | Thermophilic breakdown of organic matter | Windrow turner or in-vessel fermenter | Temperature and turning frequency |
| 2. Maturation | Finish the reaction, stabilise the product | Maturation bays with forced aeration | Reheating test |
| 3. Crushing | Reduce lumps before screening | Vertical crusher | Oversize recirculation |
| 4. Screening | Cut the product at the declared size | Rotary drum screener | Screen aperture vs spec |
| 5. Blending | Adjust nutrients or dilute with carrier | Double-shaft mixer | Recipe accuracy |
| 6. Packing | Bag and palletise | Packing machine, palletiser | Bag weight tolerance |
Why this order: skipping maturation is the most common cause of a compost product that passes the lab test at the gate and fails in the customer store. The bays cost less than the returns.
06
Equipment
Equipment configuration
Typical equipment scope for this route. Final selection follows the approved mass balance and site conditions.
Fermentation
Groove-Type Compost Turner
Crushing
Vertical Crusher
Screening
Rotary Drum Screener
Blending
Double-Shaft Mixer
Packing
Fertilizer Packing Machine
Palletising
Palletizer
07
Capacity
Capacity bands
Bands describe typical project scale; the actual figure is confirmed by mass balance, not by a nominal model number.
Windrow yard with a walk-behind turner and manual packing.
Groove or straddle turner, forced aeration, automatic screening and bagging.
In-vessel or multi-bay fermentation with continuous sizing and packing.
08
Operation
Utility requirements
Basis for the utility sheet. Local voltage, fuel and water quality are confirmed during engineering.
Power
Turner, crusher and screener dominate; the yard itself is low-load.
Water
Added at windrow build to hit the moisture window; leachate collection is part of the design.
Air
Forced aeration blowers where bays or vessels are used.
Odour control
Biofilter or cover where the site is near housing; this is often the permit condition.
Runoff
Impermeable pad and collection tank; untreated leachate is the usual environmental failure point.
Space
Fermentation occupies far more area than the machine hall, and the ratio drives site selection.
09
Quality
Quality control points
Controls that decide whether the line holds its specification in daily operation.
Temperature curve
Logged through the thermophilic phase; a flat curve means the windrow is too wet, too dry or too small.
Moisture at build
The single number that predicts whether fermentation will start.
Maturity
Reheating and germination tests before the batch leaves the yard.
Screening accuracy
A worn or overloaded screen silently changes the declared particle size.
10
FAQ
Questions buyers ask
Straight answers on scope, limits and what we need to quote.
Is granulation really optional?
For loose compost sold in bulk or blended locally, yes. If the market pays for uniform granules or the product must be bagged and shipped far, add a granulation stage.
How long is fermentation?
Typically 2–4 weeks of active phase plus 2–4 weeks of maturation, depending on feedstock, climate and turning regime.
What moisture should the windrow be?
Roughly 50–60 percent, tested by squeeze or meter. Too wet goes anaerobic, too dry never heats.
Can we compost in a cold climate?
Yes, with larger windrows, insulated vessels or hall housing. Winter throughput drops unless the design accounts for it.
How is odour controlled?
Porosity, prompt turning, cover or biofilter. Odour complaints usually trace back to over-wet feedstock.
What do you need to quote?
Feedstock types and tonnage, site area, target particle size, bag or bulk, and the local permit limits.
11
Next step
Request a project review
Send material, capacity and site constraints; the engineering team replies with a route recommendation.
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