Granular Water-Soluble Fertilizer Production Line
Granular water-soluble fertilizers combine the handling convenience of a solid granule with the fast, complete solubility that drip, sprinkler and foliar programs require. YUSHUNXIN engineers the line as one continuous train: precise PLC batching with micro-dosing, granulation by rotary drum (or roller extrusion for a dry route), drying and cooling matched to hygroscopic salts, screening, anti-caking coating, then automatic bagging and palletizing. Every unit is selected so the finished granule dissolves quickly in cold and warm water, holds formulation accuracy batch to batch, and stores and ships without caking.
PLC recipe batching with micro-dosing for trace elements
Rotary drum or roller-extrusion granulation matched to your formula
Drying, cooling and screening engineered for fast, complete solubility
Anti-caking coating plus automatic bagging and palletizing
Is this solution for you?
Read this first: the solution fits specific customers, scenarios and project stages. If you are not the target, the configuration and quote will not be right.
Suitable for
- Water-soluble fertilizer brands that need a solid, low-dust granule with fast solubility
- Fertigation programs adding broadcast + drip dual-use products
- Producers upgrading from powder-only WSF to a granule line
- OEM/private-label manufacturers standardizing granule quality
Not suitable / confirm first
- Customers who expect the supplier to own the chemical formulation
- Projects without confirmed raw materials, bulk density or target granule size
What customers face before this solution
These are the real operating problems this line is designed to solve - and why they happen.
Typical problems
- Powder WSF dusts during handling and cannot be broadcast uniformly
- Granules from generic NPK lines dissolve too slowly and block drip emitters
- Granules cake in storage because drying, cooling or coating is skipped
- Trace elements are not dosed accurately batch to batch
Why they happen
- Granulation is added without matched drying and cooling, so residual moisture binds salts
- Binder is overused to hold the granule, reducing solubility
- Micro-ingredients are weighed on one scale, losing trace accuracy
- Coating and packaging are treated as optional instead of part of the train
Why a complete line, not single machines
A granulator alone cannot deliver a marketable granular WSF: solubility is decided by the whole chain — batching accuracy, granulation binder control, drying profile, cooling, screening and anti-caking coating. We engineer them as one train so the granule dissolves fast and stores without caking.
How the line works
Raw Material Receiving & Bag Dumping
Bag / FIBC dumping stations with de-dusting and magnetic separation, screw or vacuum conveying to buffer silos.
Pre-Crushing & Conditioning
QL stainless urea crusher reduces caked salts; moisture conditioning prepares the feed for stable granulation.
Automatic Batching & Mixing
PLC per-ingredient weighing with micro-scales for trace elements; high-uniformity mixer homogenizes the batch.
Granulation
Rotary drum granulator (steam/binder controlled) or double-roller extrusion for a dry route; granule size and strength tuned to your product.
Drying
Rotary dryer with matched temperature profile to preserve salt solubility and avoid surface melting.
Cooling
Rotary cooler stabilizes granule temperature before screening and packing.
Screening & Coating
Rotary screener classifies on-size granules; anti-caking coating drum applies a thin moisture-barrier film.
Packaging & Palletizing
Net-weight bagging, checkweighing, metal detection and robotic palletizing complete the train.
What is inside the line
Each module solves one part of the chain. Open any module to see its parameters and options.
Why we configure it this way
Equipment is not a list - it is a response to your conditions. This is how your conditions change the configuration:
| When your project is... | We configure... |
|---|---|
| High moisture, steam-conditioned formula | Rotary drum granulator with steam/binder conditioning and matched dryer/cooler |
| Dry, low-moisture formula | Double-roller extrusion route with minimal drying |
| Drip-only distribution | Tighter granule size range (1-3 mm) and stricter screening |
| Broadcast + fertigation dual use | 1-4 mm granule with anti-caking coating and low-dust handling |
Different projects get different configurations
We do not apply one template to every customer. Here are three common scenarios and how the configuration changes.
Drip brand (high solubility)
Focus: Fast dissolution, tight size range, trace accuracy
Drum granulation + matched drying/cooling + 1-3 mm screening + coating
Dual-use producer
Focus: Broadcast + fertigation granule
1-4 mm granule, anti-caking coating, shared bagging/palletizing
OEM toll line
Focus: Multi-formula flexibility
PLC recipes, fast changeover, dedicated micro-scale
From inquiry to commissioning
This is the delivery path we follow for every complete line project.
Confirm requirements
Raw materials, formula, capacity, bag size, utilities and site conditions are confirmed in a technical questionnaire.
Process design & layout
We produce a process flow, line layout and foundation drawings sized to your material data.
Quotation with scope
You receive a quotation with an itemized delivery scope - what is included and what is excluded.
Order & fabrication
Fabrication starts with progress updates; long-lead items are ordered first.
Factory testing
Machines are assembled and no-load tested; weighing and control systems are calibrated.
Export packing
Equipment is export-packed with anti-rust treatment and a packing list for customs.
Delivery & installation
Machines ship FOB/CIF/door-to-door; installation is supervised on site or via video guidance.
Commissioning & training
We commission the line, train your operators and stabilize process parameters.
Acceptance & after-sales
Acceptance is based on agreed metrics; spares and remote support continue after handover.
What to prepare before requesting a quote
The better your information, the closer the first quote is to the final one. Prepare these items:
- Formula and raw material list (including trace elements)
- Target granule size and dissolution requirement
- Capacity in t/h and bag size
- Granulation route preference or open recommendation
- Site utilities, space, height and voltage
Request a granular WSF line configuration
To configure your granular WSF line, send: formula and raw materials, target granule size and dissolution requirement, target t/h, bag sizes, automation level, site voltage and destination port.
Product Inquiry
Tell us about your project — we reply within 2 working days.
When this solution does not apply
Honest boundaries make a proposal credible. These conditions must be confirmed before the configuration is valid:
- Capacity claims depend on formula and bulk density; we confirm after material data
- Solubility must be validated with your raw materials before acceptance
- Hygroscopic salts require matched drying and packaging discipline
How we verify the solution works
Performance is checked with measurable indicators, not adjectives. These are the acceptance checks for this type of line:
| Indicator | How it is verified |
|---|---|
| Dissolution time | Sample granules from continuous run; dissolve in cold water per your test method and record residue |
| Granule size distribution | Sieve analysis across a production run; confirm on-size yield |
| Batch uniformity | Sample 5-10 points per batch and compare N-P-K / trace content |
What is included - and what is not
Compare quotes on the same scope. This is exactly what the project price covers.
Included
- Process design and line layout for your capacity
- All equipment from batching to palletizing as one train
- PLC recipe management with batch logging (optional level)
- Dust collection at transfer points
- Installation supervision, commissioning and training
Not included (separate scope)
- Chemical formulation and raw material supply
- Civil works, foundations, building and site wiring
- Compressed air generation beyond the machine package
- Local permits, certifications and third-party testing