Raw material formulation of ladle heat insulation cover and preparation method of ladle heat insulation cover

Abstract

The invention discloses a raw material formulation of a ladle heat insulation cover, which consists of the following components in percentage by weight: 40 to 60 percent of brown fused alumina hollow sphere, 10 to 20 percent of brown fused alumina, 15 to 30 percent of mullite, 1 to 10 percent of alumina micro powder, 1 to 10 percent of silicon micro powder, 1 to 5 percent of Rho-Al2O3 powder, and0.1 to 0.2 percent of dispersant. The method for preparing the ladle heat insulation cover according to the raw material formulation comprises the following steps: 1) stirring the prepared raw materials evenly; 2) adding water which is 6 to 8 percent of the total weight of the raw materials into the well-stirred raw materials, and mixing and stirring the mixture for 3 to 5 minutes; 3) pouring and forming the mixture, and mold unloading after 8 to 12 hours of maintenance; and 4) drying the product at a temperature of between 100 and 120 DEG C. The ladle heat insulation cover prepared by adopting the raw material formulation of the ladle heat insulation cover has the advantages of small stacking density, low heat conductivity, good thermal shock resistance stability, erosion resistance, good workability, low price, and long service life.

Description

technical field [0001] The invention relates to a refractory material, in particular to a raw material formula of a ladle insulation cover for steelmaking and a preparation method of the ladle insulation cover. Background technique [0002] The ladle is the main equipment used in the steelmaking system. During the steelmaking process, the molten steel stays in the ladle for a long time. In order to ensure the temperature of the molten steel, in addition to the thermal insulation effect of the ladle body, the thermal insulation effect of the thermal insulation cover must also be good. Existing The heat preservation cover materials are basically clay castables and high aluminum castables, which have poor heat preservation effect and low service life. [0003] In order to improve the insulation effect, many manufacturers use insulation cotton as the insulation cover material, which has greatly improved the insulation effect. However, the steel slag in the ladle is easy to splas...

AI Technical Summary

Problems solved by technology

[0002] The ladle is the main equipment used in the steelmaking system. During the steelmaking process, the molten steel stays in the ladle for a long time. In order to ensure the temperature of the molten steel, in addition to the thermal insulation effect of the ladle body, the thermal insulation effect of the thermal insulation cover must also be good. Existing Most of the insulation cover materials are basically clay castables and high aluminum castables, which have poor thermal insulation effect and low service life.

[0003] In order to improve the insulation effect, many manufacturers use insulation cotton as the insulation cover material, which has greatly improved the insulation effect, but because the steel slag in the ladle is easy to splash on the insulation cover, the insulation cotton is corroded, deteriorated and hardened, resulting in serious peeling off