Preparation process for anti-explosion castable

Abstract

The invention provides a preparation process for an anti-explosion castable. The anti-explosion castable comprises the following raw materials in parts by mass: 60 parts of special bauxite aggregates, 17 parts of bauxite clinker powder, 8 parts of fused alumina powder, 4 parts of kyanite, 2 parts of anti-explosion fibers, 9 parts of silica powder, 10 parts of calcium aluminate cement and 0.5 part of an additive, wherein the special bauxite aggregates include more than 20% of special bauxite aggregates with the grain sizes of 5-3 mm, more than 15% of special bauxite aggregates with the grain sizes of 3-1 mm and more than 15% of special bauxite aggregates with the grain sizes of 1-0 mm; the bauxite clinker powder is 200-mesh and the fused alumina powder has the grain size of 3-5 microns. The preparation process comprises the following steps: grinding the raw materials, wherein the special bauxite aggregates are ground to have the grain sizes of 5-3 mm, 3-1 mm and 1-0 mm respectively, and the bauxite clinker is ground into 200-mesh powder; starting a stirrer for stirring for 8-10 minutes; detecting and packaging. According to the preparation process provided by the invention, the anti-explosion castable is high in compactness, good in fire resistance and excellent in slag resistance.

Description

technical field [0001] The invention relates to a manufacturing process of an explosion-proof castable, which belongs to the technical field of cement. Background technique [0002] In high-tech castables, due to the use of composite ultra-fine powder and high-efficiency admixtures, the casting lining is too dense, combined with the difficulty of drainage, which makes the lining prone to bursting during the heating process. And before the introduction of the development of explosion-proof castables, refractory castables will have instantaneous condensation, delayed hardening, and instantaneous loss of fluidity, especially during the baking process, they are more likely to burst than ordinary castables, and in severe cases, the entire construction body will be destroyed. Bring losses to users and cause bad influence. For example, when major steel mills in my country use high-tech castables, there have been burst accidents to varying degrees. Preventing the bursting of high-...

AI Technical Summary

Problems solved by technology

[0002] In high-tech castables, due to the use of composite ultra-fine powder and high-efficiency admixtures, the casting lining is too dense, combined with the difficulty of drainage, which makes the lining prone to bursting during the heating process

And before the introduction of the development of explosion-proof castables, refractory castables will have instantaneous condensation, delayed hardening, and instantaneous loss of fluidity, especially during the baking process, they are more likely to burst than ordinary castables, and in severe cases, the entire construction body will be destroyed. Bring losses to users and cause bad influence