Porous ceramic prepared by using plasma ball milling through low-temperature sintering and preparation method of porous ceramic

Abstract

The invention provides a porous ceramic with high open porosity and high flexural strength. The porous ceramic is prepared by preparing inorganic mixture powder from construction wastes serving as main raw materials by mainly adopting a plasma ball milling process and then mixing, granulating, forming and sintering the inorganic mixture powder, wherein the mixing refers to mixing of an inorganic mixture with corn starch and activated carbon. According to the preparation method of the porous ceramic, cold field discharge plasma can be introduced into mechanical vibration ball milling by virtueof the plasma ball milling process, and powder refinement and active activation are promoted by virtue of the synergistic effect of high-energy non-equilibrium plasma of gas in a ball milling tank andmechanical ball milling, so a combination reaction is facilitated, ball milling efficiency is improved, and sintering temperature is reduced; and therefore, the defects of insufficient traditional ball milling energy, low ball milling efficiency, non-uniform mixing and the like in the prior art are overcome.

Description

technical field [0001] The invention relates to the field of porous ceramic materials, in particular to a porous ceramic prepared by using plasma ball milling for low-temperature sintering and a preparation method thereof. Background technique [0002] Porous ceramics are a new type of functional material. Due to their excellent properties such as excellent pore structure, good thermal stability, low density and good wear resistance, they are widely used in filtration, heat insulation, heat preservation, sound absorption, catalyst carrier, etc. Many fields have good development prospects. However, the disadvantages of the existing porous ceramic material preparation process, such as high raw material cost and high sintering temperature, severely limit its wide application. [0003] At present, with the continuous process of urbanization, urban construction is developing rapidly, and urban renewal is also in full swing, resulting in a large amount of construction waste. At ...

AI Technical Summary

Problems solved by technology

The plasma ball milling process can introduce cold-field discharge plasma into the mechanical vibration ball mill. With the help of the high-energy non-equilibrium plasma in the ball mill tank and the synergistic effect of the mechanical ball mill, it can promote powder refinement and active activation, which is beneficial to the chemical reaction and improves the ball milling efficiency. Efficiency, lower sintering temperature, thereby overcoming the shortcomings of traditional ball milling such as insufficient energy, low ball milling efficiency, uneven mixing, etc.

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