Recycled Glass Wool Composition for External-Centrifugation Fiberizing
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Solution Overview
Problem
The strict separation between recycling glass wool and rock wool complicates supply chains by requiring separate storage and transport, as their compositions and fiberizing processes are not interchangeable, leading to inefficiencies.
Innovation Solution
A composition suitable for external centrifugation is developed, incorporating glass wool with specific chemical proportions (SiO2: 50 to 75%, Al2O3: 0 to 8%, CaO+MgO: 5 to 20%, Na2O+K2O: 12 to 20%, B2O3: 0 to 10%) to be melted and fiberized, allowing flexibility in raw material choice and integration into existing rock wool production processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass wool and rock wool are strictly separated in recycling processes, then the fiberizing process reliability is maintained, but the supply chain complexity increases due to separate storage and transport requirements
Solution Approach 1:
The patent merges previously separate glass wool and rock wool recycling streams into a single integrated process. By formulating a blended raw material composition containing both glass wool (30-70 wt%) and rock wool (30-70 wt%), the invention eliminates the need for separate storage facilities, transport routes, and processing lines for each material type, thereby reducing supply chain complexity while maintaining process reliability through controlled composition ranges
Solution Approach 2:
The patent creates a universal raw material composition that can be processed through a single fiberizing process to produce mineral wool with desired properties. This multi-functional approach allows the same processing equipment and methodology to handle both glass wool and rock wool inputs, making the system adaptable to varying input compositions while producing consistent output quality
2Adaptability or versatility
If glass wool is incorporated into rock wool production composition, then the raw material flexibility increases, but the fiberizing process difficulty increases due to compositional differences
Solution Approach 1:
The patent optimizes specific compositional parameters of the blended raw material to ensure suitable fiberizing characteristics. By controlling the glass wool content (30-70 wt%) and rock wool content (30-70 wt%), and adjusting auxiliary components like limestone (0-20 wt%) and dolomite (0-20 wt%), the invention modifies the physical and chemical parameters of the melt to achieve appropriate viscosity, temperature, and fiberization behavior, thereby maintaining ease of manufacture while increasing raw material flexibility
Solution Approach 2:
The patent develops a composite raw material composition that combines glass wool and rock wool in specific proportions to create a synergistic blend. This composite approach leverages the complementary properties of both materials - glass wool contributes to melt fluidity and fiber formation, while rock wool provides structural stability and temperature resistance - resulting in a composition that is easier to fiberize than either material alone while allowing flexible input variations
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
This approach simplifies supply chains by enabling the use of glass wool in rock wool production, enhancing operational flexibility and reducing storage and transport complexities.
Implementation Method 1
melted in a glass furnace
Implementation Method 2
is accelerated by these wheels, detaches from them, and is partly transformed into fibers under the effect of centrifugal force
Implementation Method 3
a gas stream being emitted tangentially to the peripheral band of the wheels so as to take charge of the fiberized material by separating it from the non-fiberized material and conveying it to a receiving member
Data Source
Figure 1
AI summary
The invention relates to a composition of raw materials suitable for being melted and fiberized by external centrifugation in order to obtain a mineral wool.