Fatty Acid Triglyceride Silica Dust Binding Agent
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Solution Overview
Problem
Existing antidusting agents for fertilizer granules, particularly those based on mineral oils, are not environmentally compatible and require complex application processes, while pure vegetable oils are not effective in reducing dust evolution when applied directly to freshly produced granules.
Innovation Solution
A combination of fatty acid triglycerides and amorphous hydrophilic silica in a specific weight ratio is used to treat fertilizer granules, effectively reducing dust evolution by preventing absorption and allowing for easy application, even to hot granules, without the need for heating or complex equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If mineral oils are used as antidusting agents, then dust evolution is reduced effectively, but environmental compatibility deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the antidusting agent by using fatty acid triglycerides (vegetable oils) instead of mineral oils, and by controlling the ratio of oil to powder (3:7 to 7:3). This parameter change maintains dust reduction effectiveness while improving environmental compatibility.
Solution Approach 2:
The patent creates a composite antidusting agent combining fatty acid triglycerides (oil phase) with powder materials such as calcium carbonate, calcium sulfate, or siliceous earth (solid phase). This composite structure allows the liquid oil to bind dust particles while the powder provides structural stability and environmental safety, resolving the contradiction between effectiveness and environmental compatibility.
2Object-affected harmful factors
If pure vegetable oils are applied to freshly produced granules, then environmental compatibility is maintained, but dust reduction effectiveness deteriorates due to absorption
Solution Approach 1:
The patent introduces powder materials (calcium carbonate, calcium sulfate, or siliceous earth) as intermediaries between the fatty acid triglycerides and the granule surface. These powders prevent direct absorption of the oil into the granules while allowing the oil to remain available for dust binding, thus maintaining both environmental compatibility and dust reduction effectiveness.
Solution Approach 2:
By formulating a composite of oil and powder in specific ratios, the patent creates a system where the powder component acts as a carrier that prevents oil absorption into the granules while maintaining the oil's dust-binding capability. This composite approach resolves the contradiction between environmental safety and dust control effectiveness.
3Object-generated harmful factors
If complex antidusting formulations are used, then dust evolution is reduced, but device complexity and application difficulty increase
Solution Approach 1:
The patent creates a universal antidusting composition with a broad ratio range (3:7 to 7:3 oil to powder) that can be applied to various types of granules (fertilizer, feed, chemical products) using simple mixing equipment. This universal formulation reduces the need for complex application systems while maintaining dust control effectiveness across different applications.
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 combination significantly reduces dust evolution during handling and storage of fertilizer granules, maintaining effectiveness even when granules are hot, and does not introduce environmentally harmful components, offering a simple and cost-effective solution.
Implementation Method 1
it has now been found to be possible to use liquid triglycerides even in the form of vegetable oils for the treatment of granules, if attention is paid to the fact that absorption by the granules is prevented, for example by the use of amorphous silicas
Implementation Method 2
antidusting agents are typically employed, also referred to as dust preventives, dust reducers, dust control agents or dust binding agents. Typically these are liquid products which cause increased adhesion of the dust particles on the surface of the granule grains or result in agglomeration of the dust particles
Data Source
AI summary
The present invention relates to a process for reducing the formation of dust from granules based on inorganic salts or urea, in particular from fertilizer granules of this type, in which process the granules are treated with at least one fatty acid triglyceride, which is liquid at 20° C., in combination with at least one amorphous silicic acid, wherein the weight ratio of triglyceride to silicic acid is 40:1 to 3:1, and relates to the use of this triglyceride/silicic acid combination as a dust binding agent for granules based on inorganic salts or for urea granules. The invention also relates to an oil composition containing 75 to 97.6 wt % of at least one fatty acid triglyceride, which is liquid at 20° C., having certain rheological properties, and 2.4 to 25 wt % of at least one amorphous silicic acid.