Eggshell Processing System for CaCO3 Particle Fractionation
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Solution Overview
Problem
The economic viability of processing waste eggshells into valuable products is hindered by consumers' unwillingness to pay sufficient prices, leading to the majority of commercially produced waste eggshells being disposed of in landfills due to high processing costs.
Innovation Solution
A system and method for processing waste eggshells by separating membranes from calcified solids, drying, milling, and separating the solids into three fractions of calcified particles (≤3 µ, 3-7 µ, and >7 µ) for use as CaCO3 substitutes in industrial applications, such as paint fillers, abrasive blasting media, and collagen-based products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If waste eggshells are processed into fine calcified particle products through membrane separation, drying, and multi-stage milling, then product value and commercial viability are improved, but processing complexity and costs increase
Solution Approach 1:
The patent divides the processing into distinct stages: membrane separation, drying, coarse milling, fine milling, and classification into three particle size fractions. This segmentation allows each unit operation to be optimized independently and enables the production of multiple marketable products from a single feedstock stream.
Solution Approach 2:
The patent produces different particle size fractions (fine, medium, and coarse) with specific quality characteristics tailored to different applications. Each fraction is optimized for its intended use, whether as paint filler, abrasive blasting media, or feed supplement, thereby maximizing overall product value.
2Object-affected harmful factors
If consumers pay higher prices for naturally derived products, then environmental sustainability is improved, but market demand and sales volume decrease
Solution Approach 1:
The patent changes the particle size parameter to create multiple product specifications that can be sold in different market segments. By offering fine particles for premium paint applications and coarser particles for less demanding uses, the system captures value across multiple price points while maintaining the environmentally beneficial narrative of waste utilization.
Solution Approach 2:
The patent makes the eggshell processing system multi-functional by producing three different particle size fractions that can be applied in various industries including paints, abrasives, and animal feed. This universality expands the total addressable market and reduces dependence on any single high-price niche application.
3Manufacturing precision
If membrane components are separated from calcified solids, then product purity is improved, but processing time and energy consumption increase
Solution Approach 1:
The patent performs membrane separation as a preliminary step before milling and classification. By removing membranes early in the process, the subsequent milling operations work with already-purified calcified material, reducing total processing time and avoiding the need to re-separate membranes after size reduction.
Solution Approach 2:
The patent extracts and removes the membrane component as a separate stream before further processing the calcified solids. This extraction simplifies downstream operations and enables the calcified particles to be milled and classified more efficiently without contamination from organic membrane material.
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 enables the production of commercially viable products from waste eggshells, providing sustainable alternatives to chemically synthesized or quarried materials, reducing environmental impact and processing costs, while meeting consumer demand for naturally derived components.
Implementation Method 1
separating the membrane components from the calcified solids components of the eggshells
Implementation Method 2
drying the de-membraned calcified solids components
Implementation Method 3
milling the dried calcified solids components, separating out three fractions of milled calcified solids components
Data Source
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AI summary
Disclosed herein are systems and methods for processing waste egg shells into (i) a first product comprising calcified egg shell particles having diameters of 3 μ or less, and (ii) a second product comprising calcified egg shell particles having diameters in a range from about 3 μ to about 7 μ. The first product may be used as a CaCO3 substitute for paint compositions and plastics compositions. The second product may be used as a CaCO3 blasting media substitute for use with abrasive blasting equipment.