- Extruded Potassium Humate Granules
- Product Overview
- Key Benefits
- Technical Specification
- Form & Solubility
- Which potassium humate grade fits your process?
- Applications & Dosage
- Packaging & Storage
- Successful Cases
- Frequently Asked Questions
- Also Available in This Family
- Need a quotation or a sample?
Extruded Potassium Humate Granules
Hydraulically Extruded, High-Strength Black Granules — 60% Humic Acid, Fully Soluble
2–4 mm black granule · 60% humic acid · 10–12% K₂O · 100% soluble · 20 N crush strength
Product Overview
Extruded Potassium Humate Granules are made by hydraulic extrusion — the soluble potassium humate mass is forced through a die under pressure and cut to a uniform 2–4 mm black granule at 60% minimum humic acid, 10–12% K₂O and 100% water solubility.
Hydraulic extrusion is a different process from the other two granular grades, and the difference shows up in the analysis. Compacted Granules (roller-compacted, oval, no binder) and Round Granule (disc-granulated, spherical) are both 40% humic acid and 80% soluble. This extruded grade runs 60% humic acid and 100% soluble — it is the granular grade for a buyer who needs a real humic analysis and full solubility, not just a soil-placement particle.
What extrusion buys specifically is strength. The granule is pressed into a dense, uniform cylinder that survives bagging, conveying, blending and broadcasting with minimal fines. Our batch COA records a crush strength of 20.2 N against a 15 N specification — well above the bar, and the reason this grade is the one we recommend for hard-handling BB fertilizer lines.
The granule is black and matte (not a shiny flake or crystal). That is deliberate: this is a working grade for blending and soil, where analysis and strength matter more than shelf appearance. If presentation is the priority, the shiny grades are the better visual choice.
Key Benefits
60% humic acid with 100% solubility
The granular grade with a genuine soluble analysis. Unlike the 80%-soluble compacted and round grades, this one dissolves completely — useful when part of the program is fertigation and part is soil placement.
High crush strength, low fines
Hydraulic extrusion presses a dense, uniform granule. Batch COA: 20.2 N crush against a 15 N spec. It survives hard handling, blending with urea and transport without breaking down into dust.
10–12% K₂O, real nutrient load
Potassium is a genuine nutrient contribution, not just a counter-ion, at a higher level than the 2–5% granular grades. Useful where you are already paying for K.
Uniform 2–4 mm sizing
Consistent size gives an even spread pattern from a spinner or pneumatic spreader, and matches the band of standard granular NPK for clean blending.
Black, matte working granule
A no-nonsense appearance for blending and soil. If the product is sold on analysis rather than looks, this is the right grade; if retail appearance matters, see the shiny flakes and crystal grades.
Batch COA, heavy metals below detection
Humic acid, K₂O, solubility, crush strength and pH tested per batch, with Pb, As, Hg, Cd, Cr reported below detection (GB 18877).
Technical Specification
| Parameter | Specification | Test standard |
|---|---|---|
| Humic acid (dry basis) | 60.0% min | HG/T 5334-2018 |
| Potassium as K₂O (dry basis) | 10.0 – 12.0% | GB/T 33804-2017 |
| Water solubility (dry basis) | 100% min | HG/T 3278-2018 |
| Granule crush strength | 15 N min (20.2 N tested) | GB/T 8571 |
| pH (1:100) | 9.0 – 10.0 | GB/T 33804-2017 |
| Granule size | 2 – 4 mm | Visual observation |
| Appearance | Black granule | Visual observation |
| Product code | JFHA-KHA-G | — |
Specification values are guaranteed minimums on a dry basis, taken from the batch Certificate of Analysis and tested against the stated Chinese industry standards. Every shipment travels with its own COA stating the tested values.
Need the full Certificate of Analysis, MSDS, or TDS for your formulation or tender file?
Request COA / MSDS / TDSForm & Solubility
Form: uniform 2–4 mm black cylindrical granules, cut from a hydraulic extrusion die. Dense, matte, low-dust.
In water: 100% soluble. The granule softens and dissolves completely with agitation — no residue to block a filter or an emitter. This is the granular grade that can genuinely go through a tank, unlike the 80%-soluble compacted and round grades.
Hardness: high. The extruded structure holds together under pressure and impact, which is why the crush-strength number is well above spec and why we recommend it for aggressive BB lines.
In the blender: 2–4 mm sizing matches granular NPK closely, so distribution through the blend is good and the black colour makes the humic fraction easy to see in a mixed product.
Which potassium humate grade fits your process?
| Grade | Form | Humic acid | K₂O | Solubility | Best for |
|---|---|---|---|---|---|
| Potassium Humate Powder | 60–80 mesh powder | 60% min | 10% min | 100% | Fertigation, foliar, liquid fertilizer production |
| Potassium Humate Flakes | 2–4 mm flake | 60% min | 10–12% | 100% | Broadcast, fertigation, liquid production |
| Sodium-Free Potassium Humate | Flake or powder | 65% min | 15% min | 100% | Hydroponics, closed loops, saline–sodic soil |
| Potassium Humate Shiny Crystal | 1–2 / 2–4 mm crystal | 65% min | 10% min | 97% min | Premium soluble grades, retail packing |
| Big Shiny Flakes | 2–4 mm shiny flake | 50% min | 10–12% | 100% | Retail bagged product, visual premium grades |
| Compacted Granules | 2–4 mm oval granule | 40% min | 2–5% | 80% min | Base fertilizer, blending, broadcasting |
| Round Granule | 2–4 mm round granule | 40% min | 2–5% | 80% min | Base fertilizer, mechanised sowing |
| Extruded Granules (this product) | 2–4 mm black granule | 60% min | 10–12% | 100% | BB fertilizer, organic base, high-strength blends |
Soluble grades (powder, flakes, crystal) dissolve for fertigation, foliar and liquid production. Granular grades (compacted, round, extruded) are built for soil placement, blending and mechanised sowing. Every grade ships with a batch COA and the same heavy-metal declaration (Pb, As, Hg, Cd, Cr below detection, GB 18877).
Applications & Dosage
A high-analysis granular grade — strong enough for hard handling, soluble enough for fertigation:
| Application | How to use | Rate |
|---|---|---|
| BB fertilizer (bulk blend) production | Blend at matched 2–4 mm sizing with urea, MAP, DAP or MOP. High crush strength means it stays granular through the line. | 5–15% of blend |
| Organic fertilizer base material | Use as the humic component in granular organic fertilizer where a soluble, high-humic granule is wanted. | 8–20% of formulation |
| Base fertilizer, mechanised sowing | Drill with the seeder and mix into soil at 10–15 cm depth. Avoid direct seed contact. | 750–1200 kg/ha |
| Base fertilizer, manual broadcasting | Spread evenly and plough in, alone or with other base fertilizers. | 600–1050 kg/ha |
| Topdressing by root irrigation | Dissolve, dilute 500–800 times, stir, filter and irrigate to the root zone — fully soluble, so no residue. | 300–450 kg/ha per application |
| Orchard and perennial crops | Band or broadcast under the canopy during the active root period. | 500 g – 2 kg per plant |
Packaging & Storage
| Pack size | Description |
|---|---|
| 1 kg / 5 kg / 10 kg | Printed aluminium foil bag — retail and sample size |
| 20 kg / 25 kg | Woven PP bag with inner PE liner — standard export packing |
| 1000–1100 kg | Jumbo bag with discharge spout, 4 lifting loops |
| Custom | Private-label printed bag, OEM specification, retail sizes on request |
Storage: Store under cover in a cool, dry, ventilated place, on pallets and off bare concrete. The extruded granule is dense and low in surface area, so it stores well and resists moisture uptake. Sustained wetting will still soften the granules, so keep it dry. Under cover the material is stable for years. Shelf life: 24 months in original, unopened packaging.
Custom packaging, private-label printing and OEM specifications are available on request. Packaging photos are available in the product gallery.
Successful Cases
BB fertilizer plant, China
Blends extruded granules at 12% with granular NPK for the domestic BB market. Chose the extruded grade over the compacted one specifically on crush strength — their line is aggressive and the earlier grade generated fines at the blender; the 20 N extruded granule holds together and the humic stays visibly distributed in the mix.
Explore potassium humate applications → Agriculture · BB FertilizerDrip-irrigated orchard, Spain
Uses the granule as base dressing drilled ahead of the season, and dissolves a portion for root-zone irrigation when soil moisture is low. Selected this grade because it is one product covering both routes — 100% soluble for the tank, high humic analysis for the soil — instead of keeping a separate soluble and a separate granular grade.
Explore potassium humate applications →Full case studies with crop data are published in our application sectors.
Frequently Asked Questions
How is this different from Compacted and Round granules?
All three are 2–4 mm potassium humate granules, but the analysis differs. Compacted (oval, roller-compacted) and Round (spherical, disc-granulated) are 40% humic acid and 80% soluble. This extruded grade is 60% humic acid and 100% soluble. Extrusion also gives a higher crush strength. Choose this grade when you need a real humic number and full solubility in a granular form; choose compacted or round for lower-cost soil placement.
It is black and matte — is that lower quality?
No. The colour is the natural potassium humate. Shiny flakes and crystals are polished for retail appearance; this is a working granule for blending and soil, where analysis and strength matter more than looks. The COA is the same standard as every other grade.
Can it really go through fertigation?
Yes — 100% water soluble, no residue. Dissolve, dilute 500–800 times, filter as normal practice and irrigate. That is the practical advantage over the 80%-soluble granular grades, which will leave a residue through a fine emitter.
Will it segregate when blended with NPK?
Less than an irregular particle would, because the 2–4 mm granule sits in the same size band as standard granular NPK. Every blend line behaves differently — run a segregation trial on your own equipment, and we can supply a sample for that.
Is direct contact with seed safe?
Avoid it. Drill so the granule mixes into soil at 10–15 cm depth rather than sitting with the seed. The material is alkaline at pH 9.0–10.0, and concentrated humate against seed can affect germination. Standard practice for any humic base fertilizer.
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Tell us your application, target market and packaging — we will come back with specification, price and lead time.
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