Fracture-resistant refractory material and preparation process thereof

Abstract

The invention discloses a fracture-resistant refractory material and a preparation process thereof. The refractory material is prepared from the raw materials, such as aluminum oxide-silicon oxide mixed powder, calcium oxide, magnesium oxide, manganese oxide, titanium oxide, niobium pentoxide, toughened fiber and the like, by the following steps: mixing the raw materials, ball-milling the raw material mixture in absolute ethanol, drying the raw material powder and performing dry pressing on the dry raw material powder to obtain a refractor material green body; sintering the refractor material green body, and naturally cooling to room temperature after sintering to obtain the fracture-resistant refractory material. The refractory material prepared by the preparation process has high mechanical toughness, high fracture resistance and excellent thermal shock resistance; the refractory material is simple in preparation method and is easily produced by the conventional equipment.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a fracture-resistant refractory material and a preparation process thereof. Background technique [0002] In the traditional sense, refractory materials refer to inorganic non-metallic materials with a refractoriness of not less than 1580 °C. And parts of the material, and can withstand the corresponding physical and chemical changes and mechanical action. [0003] Most refractory materials are made of natural ores (such as refractory clay, silica, magnesite, dolomite), and some industrial raw materials and synthetic raw materials (such as industrial alumina, silicon carbide, synthetic mullite, Synthetic spinel, etc.) are also increasing, so there are many types of refractory materials. According to the mineral composition, refractories can be divided into silica, aluminum silicate, magnesia, dolomite, olivine, spinel, carbonaceous, zirconium-containing refractorie...

AI Technical Summary

Problems solved by technology

[0004] The poor mechanical toughness of inorganic non-metallic materials is a common problem in inorganic non-metallic materials and materials. As refractory materials that belong to inorganic non-metallic materials, their mechanical toughness is also poor. However, its poor mechanical toughness also affects its thermal shock resistance at high temperatures. Due to the large temperature difference between rapid cooling and rapid heating and use, refractory materials are prone to cracking and peeling under the action of thermal expansion and contraction. The situation that affects the integrity of refractory materials reduces the service life of refractory materials; at the same time, for those refractory products that need to be moved frequently, their poor mechanical toughness will greatly increase the damage rate of refractory products and affect their daily use.