High-strength anti-stripping castable with homogeneous material as aggregate for kilneye and preparation method thereof

Abstract

A high-strength anti-stripping castable with a homogeneous material as an aggregate for kilneye and a preparation method thereof belong to high-temperature refractory material in the technical field of building materials. The castable comprises the following components, by weight: 60-75% of a homogeneous material, 8-12% of silicon carbide, 3-11% of an alumina micro powder, 4-6% of a silicon micro powder, 6-8% of sub-white corundum, 0-4% of white fused corundum, 4-6% of a binder pure calcium aluminate cement, and 0.25-0.4% of an admixture. The invention utilizes the characteristics of the homogeneous material that it can well form into a mullite phase at high temperature, and reduce enrichment of calcium and iron compounds. The high-strength anti-stripping castable for kilneye is prepared by using the homogeneous material as the aggregate, adding the alumina micro powder, the silicon carbide particles and micro powder, and using silicon micro powder and corundum micro powder as the matrix, pure aluminate cement as the binder, and interacted water and admixture as the additive. After casting, the pouring material provided by the present invention has excellent mechanical properties, thermal shock number up to 40 times, and excellent resistance to spalling of cement kilneye under complex thermal engineering, and is suitable for dry cement kilneye and positions with same thermal conditions.

Description

technical field [0001] The invention belongs to the technical field of high-temperature refractory materials for building materials, in particular to a high-strength anti-stripping castable for a kiln mouth with a homogenized material as aggregate and a preparation method. technical background [0002] Since the beginning of the 21st century, the number of new large-scale dry-process cement kilns in my country has been increasing, and cement kilns with a daily output of 5000t / d have reached the international leading level. The improvement of the production technology level has brought new challenges to the dry process cement production line. In particular, the thermal conditions of the production line are more complex, and the requirements for the strength and anti-spalling properties of the castables for the kiln mouth are more stringent. The existing castable aggregates for kiln mouths are mainly brown corundum or bauxite corundum. Due to the existing defects, it is diffic...

AI Technical Summary

Problems solved by technology

However, the use of homogenized materials as aggregates to prepare castables for the same thermal parts such as cement kiln mouths has not been reported.

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