Calcium Carbonate Microparticle-Fiber Complexes for Handling
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Solution Overview
Problem
Calcium carbonate microparticles with a primary particle size of less than 1 μm are difficult to handle due to their cohesive nature, making them challenging to dry and concentrate, which limits their application in various industries.
Innovation Solution
Synthesizing calcium carbonate microparticles in the presence of fibers while injecting a liquid into a reaction vessel, resulting in stable complexes with uniform shape and unique properties, allowing for efficient dehydration and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If calcium carbonate microparticles with small primary particle size (less than 1 μm) are synthesized, then their dispersibility and surface area are improved, but their handling difficulty and cohesion increase
Solution Approach 1:
The patent uses fiber as an intermediary carrier to adsorb calcium carbonate microparticles. The fiber provides a macroscopic structure that enables easy handling while maintaining the beneficial small particle size properties of the calcium carbonate. The fiber acts as a mediator between the microparticles and the external environment, solving the handling difficulty without compromising particle characteristics.
Solution Approach 2:
The patent creates a composite material system consisting of calcium carbonate microparticles combined with fiber. This composite structure integrates the advantages of both components: the high surface area and dispersibility of microparticles with the mechanical handling capabilities of fiber. The composite form allows the material to be processed and handled like conventional fiber materials while containing the refined microparticles.
2Quantity of substance
If calcium carbonate microparticles with small primary particle size (less than 1 μm) are synthesized, then their surface area and reactivity are improved, but their drying and concentration difficulties increase
Solution Approach 1:
The fiber serves as an intermediary that facilitates the drying and concentration processes. By providing a macroscopic carrier structure, the fiber enables conventional drying and concentration techniques to be effectively applied to the microparticle system, overcoming the limitations imposed by the small particle size and high surface area of the calcium carbonate microparticles.
Solution Approach 2:
The composite structure of calcium carbonate microparticles on fiber creates a material that can be processed using conventional techniques for fiber materials. The fiber component provides the mechanical structure necessary for effective drying and concentration, while the microparticles maintain their high surface area and reactivity properties throughout these manufacturing processes.
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 enables the efficient preparation of calcium carbonate microparticle-fiber complexes with high ash retention, improving their handling and application in various industries such as papermaking and materials science.
Implementation Method 1
Synthesis of calcium carbonate by the carbonation process involves reacting quick lime and carbonic acid gas, and typically comprises a slaving step in which water is added to quick lime CaO to give slaked lime Ca (OH)2, and a carbonation step in which, carbonic acid gas CO2 is injected into the slaked lime to give calcium carbonate CaCO3.
Implementation Method 2
synthesizing calcium carbonate in a solution bearing the fiber while injecting a liquid into a reaction vessel
Implementation Method 3
complexes comprising calcium carbonate microparticles having an average primary particle size of less than 1 μm adhered to the surface of a fiber
Data Source
AI summary
The present invention aims to provide techniques for preparing complexes of calcium carbonate particles having an average primary particle size of less than 1 μm and a fiber.Complexes of calcium carbonate microparticles having an average primary particle size of less than 1 μm and a fiber can be synthesized efficiently by synthesizing calcium carbonate in a solution bearing the fiber while injecting a liquid into a reaction vessel.