Wear resistant pouring material for garbage treatment kiln and preparation method thereof

Abstract

The invention discloses a wear resistant pouring material for a garbage treatment kiln and a preparation method thereof, wherein the wear resistant pouring material includes the following components by mass: 30-50 parts of 15-0mm A88 spinel, 15-25 parts of 10-5mm A95 spinel particles, 5-10 parts of composite inorganic powder with the particle size of 0.076-0.088mm, 5-8 parts of zirconium gel powder with the particle size of 2-100mu m, 3-8 parts of silicon micro powder with the particle size less than 1 mu m, 3-5 parts of Al2O3 micro powder with the particle size less than 1.2 mu m, 1-3 parts of Portland 625 cement, 3-8 parts of magnesium sol, 0.12 part of sodium pyrophosphate, 0.15 part of a defoaming agent, 0.3 part of explosion-proof fiber and 0.2 part of aluminum carbonate; and the composite wear resistant pouring material has the characteristics of uniform structure, high strength, high temperature resistance, good thermal shock resistance and easy construction.

Description

technical field [0001] The invention relates to the technical field of refractory materials, and relates to a wear-resistant castable for a garbage disposal kiln and a preparation method thereof. Background technique [0002] Alkaline garbage treatment kilns and other kiln structural parts have special working conditions such as heavy alkaline atmosphere, strong scour of clinker and hot flue gas, large ambient temperature difference, high refractoriness, etc., which require relatively high performance indicators of refractory materials. The products generally use cement-bonded corundum mullite refractory castables. The existing problems are: the thermal expansion coefficient of corundum is relatively large, the thermal shock stability is not good, and the corundum is transformed from α-phase corundum in the alkaline atmosphere of the cement kiln. It is β-phase corundum, which causes volume expansion, easily causes structural damage, and is not resistant to alkaline corrosion...

AI Technical Summary

Problems solved by technology

[0002] Alkaline garbage treatment kilns and other kiln structural parts have special working conditions such as heavy alkaline atmosphere, strong scour of clinker and hot flue gas, large ambient temperature difference, high refractoriness, etc., which require relatively high performance indicators of refractory materials. The products generally use cement-bonded corundum mullite refractory castables. The existing problems are: the thermal expansion coefficient of corundum is relatively large, the thermal shock stability is not good, and the corundum is transformed from α-phase corundum in the alkaline atmosphere of the cement kiln. It is β-phase corundum, which causes volume expansion, easily causes structural damage, and is not resistant to alkaline corrosion, which greatly shortens the life of the coal injection pipe, which can no longer meet the needs of the market.

[0003] The traditional construction method of castables is vibration construction, which has some disadvantages. For example, insufficient vibration of the vibrator leads to insufficient density of the cast body, and excessive vibration is prone to segregation of particles, and it is easy to leave holes when the vibrating rod is inserted and pulled out. In addition, the vibrator is noisy. Pollution, affecting the construction environment

Images