Novel preparation technique of energy conservation material for buildings

Abstract

The invention discloses a novel preparation technique of an energy conservation material for buildings. The energy conservation material for buildings is obtained by mixing expanded perlite, cement and a gelation additive, wherein the expanded perlite is prepared by using the technique comprising the following steps of: uniformly enabling the perlite ore sand to flow through a sand frying furnace using a feeding control device, preheating the perlite ore sand to 250-350 DEG C, inputting the preheated perlite ore sand to a gas furnace, heating to ensure that the perlite ore sand is rapidly expanded to obtain the expanded perlite, and controlling the outflow amount of the expanded perlite to convey partial expanded perlite to the sand frying furnace to form hot sand reflow heat supply, so that the heat energy of the partial expanded perlite can be used for uniformly and circularly preheating the perlite ore sand flowing in the sand frying furnace to cause all the perlite ore sand to reach the preheating temperature to be expanded to form the expanded perlite. The energy conservation material for buildings prepared by using the novel preparation technique disclosed by the invention not only has the characteristics of light weight, environmental-friendliness, and efficient thermal insulation, but also is environment-friendly, capable of realizing A-grade fire resistance, convenient to construct, unlikely to absorb water, expand, crack and fall off, high in durability, and long in service life.

Description

technical field [0001] The invention relates to heat insulation and energy-saving materials for buildings, in particular to a preparation process for a new type of building energy-saving material with light weight, environmental protection, high heat insulation and A-level fireproof performance. Background technique [0002] With the acceleration of the urbanization process and the continuous improvement of people's quality of life, building energy consumption has exceeded one-third of the total energy consumption of the society, and has become a huge burden on the national economy. It is one of the important links to set goals and maintain sustainable economic development. Comprehensive building energy conservation is conducive to fundamentally promoting the conservation and rational use of energy resources, alleviating the contradiction between the supply of energy resources and economic and social development in our country; it is conducive to accelerating the development...

AI Technical Summary

Problems solved by technology

[0005] The present invention changes the existing way of preheating the perlite ore by using the high-temperature tail gas of the natural gas puffing furnace, and solves the problem caused by insufficient preheating of the flowing perlite ore by only using the high-temperature tail gas of the natural gas puffing furnace. Part of the puffed high-temperature expanded perlite is returned to the sand frying furnace. Without the need to consume other heat energy, the expanded perlite and the high-temperature tail gas of the natural gas puffing furnace can simultaneously preheat the flowing perlite ore. And through the quantitative control measures of perlite ore and the ventilation measures of the frying sand furnace that can keep the pressure balance of the frying sand furnace, the preheating effect of the perlite ore is greatly improved, so that the perlite ore can be fully expanded at high temperature in the natural gas puffing furnace. The particle is microspherical, the shape is regular, continuous and smooth, the surface pores are closed, and the interior is honeycomb vitrified microbead type expanded perlite. This method can not only increase the expansion efficiency of expanded perlite by more than 10%, but also improve the expansion rate. Perlite's cylinder compressive strength and surface vitrified closed porosity can improve the thermal insulation performance of building energy-saving materials and reduce the cost of building energy-saving materials