Granite waste stone dust foam ceramics and preparation method thereof

Abstract

The invention discloses granite waste stone dust foam ceramics comprising the following components by the weight percentage: 70.0-85.0% of granite waste, 2.0-8.0% of china clay tailings, 4.0-14.5% ofwaste ceramic powder, 3.0-10.0% of clay, and 0.5-3.0% of a high-temperature foaming agent; the invention also discloses a preparation method of the granite waste stone dust foam ceramics. The preparation method has the advantages of simple process and low production cost; the prepared foam ceramics have the advantages of small density, low heat conductivity coefficient and high strength, and alsohave remarkable and excellent performance of aging resistance, corrosion resistance, heat insulation and heat preservation, sound separation and absorption, water resistance and fire prevention, and green and environmental protection, and are suitable for the field of building heat preservation; the mixture can be directly put in a refractory material mould and then is sent into a high temperaturefurnace and calcined, and the granite waste stone dust foam ceramics are prepared; the forming process is simplified, the work efficiency is improved, and the granite waste stone dust foam ceramics are suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of porous ceramics, and in particular relates to a granite waste rock powder foam ceramic and a preparation method thereof. Background technique [0002] Ceramic foam is a new type of porous ceramic material with small volume density, high porosity and three-dimensional network structure. It has the characteristics of light weight, high strength, corrosion resistance, good mechanical strength and filtration performance, and can be widely used in catalyst carrier, Filter materials, heat exchange materials, car wash exhaust purifiers and building insulation materials, etc. Developed countries such as Japan, Germany and the United States have already started the research and development of foam ceramics as early as the 1970s, and have been applied in automobile exhaust, metallurgy industry molten metal impurities filtration and catalyst carriers. my country also started related research work in the mid-1980s, ...

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Problems solved by technology

[0004] The prior art patent CN 102344280 B discloses a method of using granite waste to produce ceramic products. In this patent, granite waste is used as raw material, and the usage is only 20-40%. The utilization rate of waste is extremely low, and the molding process adopts the traditional plastic method. Or the grouting method to form the green body, after trimming, drying, glazing, and firing at high temperature, ceramic products are made; the molding process is complicated, the work efficiency is low, and it is not suitable for large-scale production

Patent CN 106187087 A discloses facing composite foamed ceramics based on granite tailings and its preparation method. The patented molding process requires a pressure spray drying tower to dry and granulate the slurry to obtain hollow spherical foamed ceramics with a certain fineness Precursor material, and then firing, not only the process is complex but also the volume density of the prepared facing composite foamed ceramics is relatively high, at 300-800kg / m 3 Between, does not meet the requirements of lightweight insulation