Biodegradable Matrix Fertilizer Granules
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Solution Overview
Problem
Fertilizer granules with water-based bonds are unstable outdoors, leading to rapid nutrient release, environmental pollution, and the need for frequent reapplications, which is time-consuming, labor-intensive, and costly, while chemical binders pose environmental concerns.
Innovation Solution
Producing fertilizer granules using a biodegradable matrix component that is melted and mixed with fertilizer components at elevated temperatures, then processed into granules, which are solid at room temperature, allowing for controlled release and improved stability without water-based binding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water-based binders are used to form fertilizer granules, then production efficiency is improved, but granule stability deteriorates leading to rapid nutrient release
Solution Approach 1:
The patent changes the physical state parameter of the binder from liquid (water-based) to solid (fusible material), which fundamentally alters the binding mechanism. The solid fusible material is heated to melt, forming granules that cool and solidify, creating stable granule structures that resist disintegration while maintaining production efficiency.
Solution Approach 2:
The patent creates a composite granule structure where the fusible material forms a matrix that binds fertilizer components. This composite approach combines the binding properties of the fusible material with the nutritional properties of fertilizer, achieving both granule stability and controlled nutrient release.
2Ease of manufacture
If water-based binders are used, then production cost is reduced, but environmental impact worsens due to nutrient leaching
Solution Approach 1:
By changing the binder from water-based to fusible solid material, the granules achieve water resistance. This prevents nutrient leaching into groundwater and soil pollution, eliminating the harmful environmental effects while keeping production costs low through the use of inexpensive fusible materials.
3Reliability
If chemical binders are used to improve granule stability, then granule strength is improved, but environmental compatibility deteriorates
Solution Approach 1:
The patent uses inexpensive fusible materials that can be easily applied and then decompose or dissolve under controlled conditions. These materials provide sufficient binding strength for granule formation and transport, then break down without leaving persistent chemical residues, unlike synthetic chemical binders.
Solution Approach 2:
The patent transitions from chemical binding mechanisms to physical binding through phase change (melting and solidifying). This eliminates the need for chemical adhesives entirely, using only the physical properties of the fusible material to bind granule components, thereby improving environmental compatibility.
4Quantity of substance
If frequent fertilizer applications are made to compensate for rapid nutrient release, then nutrient supply is maintained, but time consumption and labor increase
Solution Approach 1:
The fusible material matrix is designed to control the release rate of nutrients from within the granule structure. This preliminary structuring of the granule ensures sustained nutrient release over time, eliminating the need for frequent reapplications and reducing labor requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method results in stable fertilizer granules with a controlled release of nutrients, reducing environmental impact and the frequency of applications, while ensuring efficient production and effective plant nutrient absorption.
Implementation Method 1
the matrix component is heated to a processing temperature and melted
Implementation Method 2
the molten matrix component is mixed with the at least one fertilizer component to form a flowable or pasty mixture
Implementation Method 3
the mixture is formed with the granulating device to form granules which have a temperature below the melting temperature of the matrix component and are solid at room temperature
Data Source
AI summary
The invention relates to a method for producing fertilizer granules consisting of at least one powdered or granular fertilizer component and at least one matrix component, which is a biodegradable substance and is solid at room temperature and melted and flowable at a processing temperature which is above room temperature and a melting temperature of the substance, wherein the matrix component is heated to a processing temperature and melted, the melted matrix component is mixed with the at least one fertilizer component to form a flowable or pasty mixture, the mixture is fed to a granulating device, and in the granulating device the mixture is formed into granules which have a temperature below the melting temperature of the mixture and are solid at room temperature.