Tricalcium Silicate Powder Sintering With Microwave-Assisted Hybrid Heating
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Solution Overview
Problem
Traditional methods for preparing tricalcium silicate are cumbersome, require high temperatures, result in low purity, and cause environmental pollution, with prolonged preparation periods and high costs.
Innovation Solution
A preparation method involving mixing CaCO3 and SiO2 powders, followed by pre-pressing and sintering at 1,200°C to 1,500°C using auxiliary heating bodies and microwave treatment, ensuring uniform heating and rapid synthesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional high temperature sintering method is used, then tricalcium silicate can be obtained, but the preparation procedure is complicated, temperature requirement is high, cost is high and pollution is serious
Solution Approach 1:
The patent changes the sintering temperature parameter from traditional high temperature (1800°C) to a lower temperature range (1200-1500°C), and modifies the heating method parameter by introducing microwave sintering with auxiliary heating bodies. This parameter change simplifies the preparation procedure while maintaining product purity.
Solution Approach 2:
The patent replaces the traditional long-duration high temperature sintering process with microwave sintering technology. The microwave field directly heats the material molecules, substituting the conventional thermal conduction mechanism, thereby reducing sintering time and temperature requirements while improving procedural efficiency.
2Manufacturing precision
If repeated high temperature calcination is performed to reduce free calcium oxide, then purity of tricalcium silicate is improved, but preparation period becomes longer
Solution Approach 1:
The patent employs microwave sintering with auxiliary heating bodies that provide continuous and uniform heating throughout the material. This continuous effective heating action achieves complete reaction and high purity in a single step, eliminating the need for repeated calcination cycles and significantly reducing preparation time.
Solution Approach 2:
The auxiliary heating bodies act as intermediaries that facilitate uniform heat distribution and enhance the microwave sintering effect. These intermediaries ensure that the material reaches the required temperature uniformly and maintains it for the necessary duration to achieve high purity without requiring multiple processing steps.
3Productivity
If microwave treatment alone is used for sintering, then heating is rapid, but uniform heating is difficult to achieve at low temperatures
Solution Approach 1:
The patent merges microwave heating with auxiliary heating bodies to create a hybrid heating system. The microwave field provides rapid volumetric heating while the auxiliary heating bodies ensure uniform temperature distribution, particularly at low temperatures. This combination achieves both high productivity and uniform heating quality simultaneously.
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 achieves high-purity tricalcium silicate with reduced synthesis time, energy consumption, and minimal environmental impact, utilizing microwave heating for uniform and efficient production.
Implementation Method 1
performing sintering treatment on the obtained blank at a temperature of 1,200 DEG C.-1,500 DEG C. for 0.5 h-1.5 h, where the sintering treatment is to perform mixed sintering by using auxiliary heating bodies and in cooperation with microwave treatment
Implementation Method 2
mixed sintering by using auxiliary heating bodies and in cooperation with microwave treatment
Implementation Method 3
CaCO3 powder and SiO2 powder are mixed fully and uniformly through ball milling treatment, which is conducive to full and uniform contact between the CaCO3 powder and the SiO2 powder in subsequent sintering processes and further obtaining of the tricalcium silicate
Data Source
AI summary
Disclosed is a preparation method for tricalcium silicate powder. The method includes the following steps: taking CaCO3 powder and SiO2 powder as raw materials for preparation, so as to obtain mixed powder having uniform components; pre-pressing the obtained mixed powder to make a blank; and performing sintering treatment on the obtained blank at a temperature of 1,200 DEG C.-1,500 DEG C. for 0.5 h-1.5 h, so as to obtain tricalcium silicate, where the sintering treatment is to perform mixed sintering by using auxiliary heating bodies and in cooperation with microwave treatment. According to the present disclosure, the tricalcium silicate is prepared through mixed sintering by using the auxiliary heating bodies and in cooperation with the microwave treatment, and a mixed heating mechanism enables a sample to be heated more easily at a low temperature, so that synthesis purity and efficiency are improved.