Resin-bonded tundish lightweight coating and preparation method thereof

Abstract

The invention discloses a resin-combined tundish light coating and a preparation method thereof. The tundish light coating is composed of the following components in parts by weight: 85-95 parts of magnesia and / or forsterite with the particle size being larger than 0mm and less than or equal to 0.5mm, 0.3-6.0 parts of resin powder, 0.01-2.5 parts of organic acid, 0.1-3 parts of hollow organic fiber, 0.5-3 parts of paper fiber, 0.1-0.3 parts of magnesian sintering aid and 0.01-0.2 part of sodium salt dispersant. The preparation method comprises steps of preparing raw materials, mixing and stirring the raw materials in sequence, adding water and stirring. The tundish light coating is small in volume density, high in strength, good in liquidity, high in hardening rate, uniform in coating structure and the like.

Description

technical field

[0001] The invention relates to the technical field of monolithic refractories, in particular to a resin-bonded tundish lightweight coating and a preparation method thereof. Background technique

[0002] Tundish coatings are mainly made of magnesia and / or forsterite, which are disposable products with a very large annual consumption. With the depletion of refractory resources such as magnesia and the urgent need of the national energy conservation and environmental protection strategy, tundish coatings have gradually changed from heavy (1.8 to 2.4g / cm 3 ) to lightweight (1.2~1.8 / cm 3 ) direction of development, its porosity is high, the pore size is large, and the thermal insulation effect is excellent. However, the lightweight coatings currently on the market generally use one or more of silica powder, clay, cement, water glass, polyphosphate, etc. as a binder or hardener. In order to increase the adhesion, plasticity and strength of the coating etc., the...