Biomass particle erosion hole light fireproof material and preparation method thereof

Abstract

The invention discloses a biomass particle erosion hole light fireproof material and a preparation method thereof. The biomass particle erosion hole light fireproof material contains a basic material,the basic material is prepared from, by mass, 30-35 parts of biomass particles, 20-25 parts of calcined bauxite micro powder, 15-20 parts of bauxite raw granular material, 10-15 parts of calcined mullite micro powder and 5-8 parts of a-aluminium oxide micro powder. The biomass particle erosion hole light fireproof material and the preparation method thereof have the advantages that the biomass particle erosion hole light fireproof material is obtained through lower cost and a more environment-friendly preparation method, the material is green and environment-friendly, the volume density is small, the high temperature structure strength is large, the thermal shock stability is better, the heat conductivity coefficient is lower, and the erosion-resisting performance is strong.

Description

technical field [0001] The invention relates to a lightweight refractory material corroded by biomass particles and a preparation method thereof, belonging to the field of lightweight refractory materials. Background technique [0002] At present, in view of the current situation of excessive energy consumption in my country and even the world, the research on thermal insulation and energy-saving materials is particularly important. Heat insulation is one of the important measures for energy saving. Lightweight refractory materials with molecular structure micropores have a series of excellent properties such as light weight and low thermal conductivity, and play an important role in the field of heat preservation. In particular, lightweight refractory bricks represented by poly-light spherical mullite bricks and poly-light spherical high-alumina bricks are widely used in steel, metallurgy, forging, ceramics, annealing heat treatment, glass and petrochemical thermal engineer...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the pollution problems in the production process of lightweight refractory materials with polystyrene polylight balls as foaming agent, some domestic research and development institutions have developed patents such as "a method for preparing mullite bricks from coal gangue (CN200710051657)" Technology, by granulating the coal gangue left in the process of coal excavation, taking advantage of its low temperature resistance and ablation characteristics, instead of polystyrene poly light balls as pitting particles for the preparation of lightweight refractory materials, but coal The composition of gangue is complex, and there are many sulfur-containing substances in itself. During the combustion process, it is easy to form substances such as sulfur dioxide and tar, and the material itself has high strength (bulk density reaches 2.2g / cm 3 ), it is more difficult to crush during processing, so although the application of this technology removes the problem of the emission of harmful dioxin gases that exist in the high-temperature combustion process of polystyrene ball blowing agents, but in the process of large-scale promotion new pollution problems

In response to this problem, the patented technology of "a new formula for mullite lightweight heat-insulating bricks" (CN101362651A) uses sawdust to prepare mullite lightweight heat-insulating bricks. Ball foaming agent and coal gangue pitting particles produce secondary environmental pollution during combustion, but its production process is more complicated, and sawdust is easy to agglomerate when it meets water, and the pores produced are of different sizes and unevenly distributed, resulting in structural The strength is inconsistent, the quality of mass production cannot be controlled, and at the same time, there are many obvious pores formed on the surface of the material, which makes the material easy to decrease in service life due to corrosive gas or substance erosion during use, and the structure of lightweight refractory materials has not been fundamentally solved. Strength and service life issues