Composite Insulating Particles via Matrix Encapsulation
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Solution Overview
Problem
The refractory industry faces challenges in producing materials with low thermal conductivity, high mechanical strength, and low bulk density, while also requiring reduced energy consumption and improved insulation properties, as existing methods often rely on high temperatures and energy-intensive processes that are environmentally unsustainable.
Innovation Solution
A matrix encapsulation process is used to produce composite particles with a grain size of less than 5 mm, incorporating refractory substances, lightweight fillers, and colloidal silicon dioxide, which are encapsulated in a solidifiable liquid and then treated to achieve low bulk density, high thermal stability, and excellent insulation characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high temperatures are used to produce homogeneous refractory particles, then manufacturing precision is improved, but use of energy increases
Solution Approach 1:
The patent changes the fundamental parameter of particle formation from thermal melting to colloidal encapsulation. Instead of heating ceramic starting materials to melt phase for homogeneous particle formation, the invention uses colloidal silicon dioxide as an encapsulating matrix that forms homogeneous composite particles at lower temperatures, thereby reducing energy consumption while maintaining manufacturing precision.
Solution Approach 2:
The patent introduces colloidal silicon dioxide as an intermediary substance that mediates the particle formation process. This colloidal matrix encapsulates refractory particles and lightweight fillers to form homogeneous composite particles without requiring high-temperature melting, thus solving the contradiction between achieving homogeneous particles and reducing energy consumption.
2Weight of moving object
If hollow spherical corundum is used to reduce weight, then weight is reduced, but thermal conductivity increases
Solution Approach 1:
The patent creates composite particles combining refractory substances, lightweight fillers, and colloidal silicon dioxide in a specific matrix structure. This composite approach allows optimization of both weight and thermal conductivity properties, achieving low bulk density while maintaining low thermal conductivity through the synergistic effect of the composite material structure.
Solution Approach 2:
The patent utilizes the porous structure of colloidal silicon dioxide as an encapsulating matrix. The porous nature provides lightweight properties while the controlled porosity structure can be designed to maintain low thermal conductivity by creating thermal resistance pathways, thus resolving the contradiction between weight reduction and thermal insulation.
3Use of energy by moving object
If fluxes are used to lower production temperature, then use of energy is reduced, but reliability decreases
Solution Approach 1:
The patent uses colloidal silicon dioxide as an intermediary encapsulating agent that enables low-temperature production without requiring fluxes. This intermediary matrix allows refractory particles to be encapsulated and spheroided at lower temperatures, maintaining fire resistance and reliability while reducing production temperature and energy consumption.
Solution Approach 2:
The patent replaces the thermal-melting mechanism (which requires high temperatures and fluxes) with a colloidal-encapsulation mechanism. This substitution of the fundamental formation mechanism allows production at lower temperatures without compromising the fire resistance and reliability of the final refractory product.
4Quantity of substance
If expanding particles are used to increase porosity, then porosity is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent changes the approach to porosity creation from using expanding particles to using encapsulated lightweight fillers within a colloidal matrix. This parameter change allows precise control of porosity through the selection and distribution of fillers with controlled sizes and concentrations, maintaining manufacturing precision while achieving the desired porosity level.
Solution Approach 2:
The patent applies local quality by creating composite particles with non-uniform internal structure - containing lightweight fillers distributed within a colloidal silicon dioxide matrix. This allows different regions of the composite particle to have different properties, achieving optimal porosity while maintaining regular external particle shape and manufacturing precision.
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 process results in composite particles with low bulk density, high mechanical strength, and improved insulation properties, reducing energy consumption and environmental impact, while being adaptable to various particle sizes and compositions, thus addressing the industry's demands for efficient and sustainable refractory materials.
Implementation Method 1
solidifying the solidifiable liquid, such that the droplets harden to give hardened droplets and the refractory substance(s) and the density-reducing substance(s) are encapsulated in the solidifying continuous phase
Implementation Method 2
nanoparticulate silicon dioxide that functions as binder or binder component for said particles of the refractory substances
Implementation Method 3
improved insulation properties... low thermal conductivity
Data Source
AI summary
What are described are a process for producing an insulating product for the refractory industry or an insulating material as intermediate for production of such a product, and a corresponding insulating material/insulating product. Likewise described are the use of a matrix encapsulation process in the production of an insulating product for the refractory industry and a corresponding insulating product and/or an insulating material as intermediate for production of such a product.