How Granulating Aid Enhances Granule Strength and Durability
                     How Granulating Aid Enhances 
Granule Strength and 
Durability
Granulating aids are far more than simple adhesives in the fertilization industry. All of them 
determine how strong and uniform and how long-lasting the final granules are. If you don’t 
use fertilizer granulating aids, you’ll get dust, wrong nutrients release, and breakage 
during transport. This impacts yield and farmer satisfaction. Granulating aids achieve 
strong structural reliability in fertilizer, which is essential for modern agriculture.
The Science Behind Granulating Aids
A granulating aid helps fertilizer particles bind well. On their own, the fertilizer salts are 
often too fine and chemically inert to stick together well.
The granulating aid works by forming bridges between particles. When a very controlled 
amount of moisture is added, the aid softens and coats the particle surface. Over time, it 
solidifies and locks the neighboring particles together.
This fills the internal void and creates a denser particle. Since porosity is one of the biggest 
contributors to weak granules, reducing it has an outsized effect on overall strength.
In many fertilizers, the base material recrystallizes as it cools. Fertilizer granulating aid 
also affects this by influencing how these crystals form. It promotes the formation of even-
sized crystals.
Granulating aid doesn’t affect the chemical properties and the end use of fertilizer. NAQ 
GLOBAL’s most famous GREENFIX and NAQFIX series are non-toxic and easily bio-
degradable, and their primary purpose is to improve the crushing strength and reduce fines 
in the fertilizer.
Why Do Granule Strength And Durability Matter?
Fertilizer  like  complex  NPK  may  become  overly  powdery  during  handling  and 
transportation or in the granulator itself during production stage. Hence , the final product 
generated  would  have  very  high  percentage  of  fines  or  under  sized  granules.
The granule strength is one of the important characteristics of fertilizer efficiency. The 
world’s cultivational capacity increases with the adoption of technology, and so does the 
demand for global fertilizer. This means products must be shipped over long distances. But 
weak granules break during handling, storage, and transportation. When products reach 
the field, quality suffers significantly.
Brittle granules also cake and clump. This is especially high during humid conditions.
Once the granulation process has happened, it helps in the following way:
 The strong granules retain their shape even when they are stored in bags for a long 
time.
 This helps to evenly distribute nutrients in the soil.
 Granules are more robust and produce less dust which is not harmful for workers’ 
health.
 There is a reduced moisture-related weakness. This is because the aids control how 
water interacts with raw materials during formation.
 Also, the increased strength helps preserve the coloring agents often blended into 
granules for multiple reasons.
Manufacturers thus benefit from higher yield, reduced production downtime, and a safer 
working environment for workers on the ground.
Testing the durability
Some standard measures evaluate durability. These include:
 Crush strength testing: This process applies controlled force to a sample until it 
fractures.
 Abrasion test: It replicates the abrasion of granule during transportation.
 Moisture testing: The granules are exposed to a humid storage environment and 
observed for behavior.
NAQ Global conducts rigorous testing to ensure the granules are durable and can 
withstand the abuse of harsh conditions.
Balancing Sustainability And Performance
Environmental regulations are tightening around the world as we move toward a greener, 
more sustainable planet. Interestingly, granule strength and environment are strongly 
correlated. Dense granules are naturally resistant to environmental degradation as they 
reduce the internal porosity and the hygroscopic properties of raw fertilizers.
The move is part of a wider push toward green technology in fertilizer quality as 
manufacturers rethink how they make the product.
Conclusion
The granulating aids directly affect how the fertilizer performs in the field. They improve 
particle bonding, reduce breakage and increase crush strength. The cultivation industry 
today is increasingly moving toward green technology in fertilizers, which encourages 
manufacturers to think of the environmental aspects in addition to the technical ones. 
Areas of increasing focus include reducing binder-related emissions during processing, 
sourcing biodegradable additives and more. Needless to mention, core sustainability 
principles are actively shaping the modern fertilizer manufacturing industry.
Source Link:
https://sites.google.com/site/naqglobalfertilizers/blog/granulating-aids-
enhance-granule-strength-durability