Wear-resistant refractory castable

Abstract

The invention relates to the technical field of refractory material production, and discloses a wear-resistant refractory castable. The refractory castable is prepared from the following components in percentage by mass: 25-30% of ferrochrome slag, 35-42% of microporous mullite particles, 6-16% of mullite micropowder, 0.5-3% of silica micropowder, 1-3% of calcium aluminate cement, 8-15% of a binder, 2-5% of a reinforcing agent, 20-35% of spinel micropowder and 5-8% of refractory mortar. The preparation method comprises the following steps: grinding, mixing, carrying out vibration molding, curing and carrying out heat treatment on 0.1-0.35% of a polycarboxylate dispersant, 0.1-0.15% of a water reducing agent and 0.05-0.15% of organic explosion-proof fibers, and processing to prepare the castable. According to the invention, the raw materials for producing the castable are optimally matched and adaptively selected, so that the wear resistance, high-temperature resistance and other properties of the castable can be effectively improved; the stability of the castable in the use process is ensured, and the waste of resources is reduced.

Description

technical field [0001] The invention relates to the technical field of refractory production, in particular to a wear-resistant refractory castable. Background technique [0002] Refractory is a kind of inorganic non-metallic material whose refractoriness is not lower than 1580℃. Because of its good high temperature tolerance, it is widely used in the interior of related equipment in metallurgy, chemical industry, machinery manufacturing and power industry. Lining; refractory materials are usually used to resist high temperature and the erosion and corrosion of various media, so as to ensure the normal operation of the equipment and reduce the frequency of downtime maintenance of the equipment, because it is often subjected to high temperature flue gas and Due to the strong erosion of some ash and slag, the refractory lining will be eroded and peeled off with the temperature fluctuations in the corresponding equipment, resulting in low production efficiency and a lot of wast...

AI Technical Summary

Problems solved by technology

[0002] Refractories are a kind of inorganic non-metallic materials with a refractoriness not lower than 1580°C. Because of their good high temperature resistance, they are widely used in the interior of related equipment in metallurgy, chemical industry, machinery manufacturing and power industries. Lining; refractory materials are usually used to resist the erosion and corrosion of high temperature and various media, so as to ensure the normal operation of the equipment and reduce the frequency of downtime and maintenance of the equipment, because it is often subjected to high temperature flue gas and Due to the strong erosion of some ash and slag, the refractory lining will be corroded and peeled off with the temperature fluctuations in the corresponding equipment, resulting in low production efficiency and a large waste of resources; Chinese patent CN106278307A discloses a high-performance refractory castable It is processed by mixing silicon carbide, Yongji clay, A88 homogenized material, A88 homogenized material powder and iron-zinc spinel powder. However, this castable has poor thermal shock stability and is resistant to high temperature and corrosion. Insufficient tolerance and other problems, coupled with excessive fluidity and slow solidification, there are still certain limitations in application