Novel light roasting fireproof product used for flue-cured tobacco machine furnace

Abstract

The invention relates to a novel light roasting fireproof product used for a flue-cured tobacco machine furnace, which comprises the following raw materials by weight percentage: 77-91% of mixed flint clay, 0-10% of carbonization silicon powder, 2-3% of silica micro powder, 2-3% of Guangxi white clay and 6-8% of binder sodium silicate, the physical and chemical indexes of the carbonization silicon powder and the silica micro powder are characterized in that SiC in the carbonization silicon powder is greater than or equal to 95%, and SiO in silica micro powder is greater than or equal to 93%. wherein the mixed flint clay is mixed by 20-25% of crude pellet flint clay with granularity of 5-3mm, 20-25% of intermediate pellet flint clay with granularity of 3-1mm, 10-15% of fine pellet flint clay with granularity of 1-0.088mm and 30-40% of powder flint clay with granularity less than or equal to 0.088mm with weight ratio, The novel light roasting fireproof product has good thermal shock stability and strength, can block the erosion of flue gas and slag, spalling damage of the product can be avoided, the spalling damage of the light roasting product used for tobacco machine furnace, and a furnace shell can be effectively protected.

Description

1. Technical field [0001] The invention relates to a light-fired refractory product, in particular to a new light-fired refractory product for flue-cured tobacco machines. 2. Background technology [0002] In the process of curing flue-cured tobacco, bituminous coal or anthracite is usually used to provide heat energy, and bituminous coal or anthracite produces CO, CO 2 、H 2 S, SO 2 , SO 3 And other gases, because bituminous coal or anthracite contains organic matter and coal gangue, etc., are easy to coke during combustion. The generated gas and coking substances are easy to react with refractory materials and be damaged. The main manifestations are as follows: First, the combustion of bituminous coal or anthracite is the reaction between the acid gas and the matrix of the material, resulting in the reduction of the strength of the material and its disintegration. Second, during the combustion process of bituminous coal or anthracite, coking and refractory materials re...

AI Technical Summary

Problems solved by technology

The main manifestations are as follows: First, the combustion of bituminous coal or anthracite is the reaction between the acid gas and the matrix part of the material, resulting in a decrease in the strength of the material and disintegration

Second, during the combustion process of bituminous coal or anthracite, coking and refractory materials react to produce slag erosion, so that refractory materials are often in a state of rapid cooling and rapid heating, which is easy to crack and peel off refractory materials, resulting in sharply increased damage to refractory materials, thus shortening the life of refractory materials. service life