Corundum amorphous fireproof anti-explosive material capable of realizing quick furnace drying and application method thereof

Abstract

The invention discloses a corundum amorphous fireproof anti-explosive material, belonging to the technical field of fireproof materials for ferrous metallurgy furnaces. The main materials of the corundum amorphous fireproof anti-explosive material include 12 parts of bauxite clinker with particle size of 5-15mm, 20 parts of bauxite clinker with particle size of 3-5mm, 10 parts of bauxite clinker with particle size of 1-3mm, 10 parts of bauxite clinker with particle size of 0-1mm, 10 parts of bauxite clinker powder, 10 parts of alumina powder, 10 parts of Guangxi white mud, 4 parts of silicon micro-powder, 0.6 part of metal silicon, 3 parts of CA-70 cement and 10 parts of aluminum hydroxide; additives of the corundum amorphous fireproof anti-explosive material include 0.35 part of water reducing agent and 0.05 part of anti-explosive agent. By adopting the amorphous fireproof anti-explosive material disclosed by the invention to manufacture a metallurgical furnace, the required furnace drying time is short, and the pouring or overhauling period of the metallurgical furnace is shortened; moreover, the prepared fireproof layer has high density and strength as well as good scouring and erosion resistance, the quality of the metallurgical furnace body is guaranteed, and the production benefits of an enterprise are increased.

Description

technical field [0001] The invention relates to the technical field of refractory materials for iron and steel metallurgical furnaces. Background technique [0002] Modern metallurgical furnaces are increasingly made of amorphous refractory castables. It is a mixed dry material composed of refractory aggregates and binders. It mainly uses hydraulic binders and is used after adding water or other liquids. It is constructed by pouring, vibrating and tamping methods, and can be solidified and hardened without heating. Compared with traditional brick-clay refractories, it has a series of advantages such as convenient construction, good integrity, high strength and long life. Since refractory castables must add about 6% water during the construction process, there will be a lot of free water and crystal water in the masonry. Safe and rapid removal of moisture in refractory castables is a key step in the baking process of metallurgical furnaces. [0003] Using traditional refra...

AI Technical Summary

Problems solved by technology

[0005] (1) The oven takes a long time, usually 7 to 10 days, which seriously restricts the equipment overhaul period;

[0006] (2) Once the initial heating rate of the oven is too fast, the furnace body will burst and explode, and the thickness of the furnace body will peel off up to 150~200mm, resulting in serious consequences such as rework and equipment damage;

[0007] (3) In the initial stage of the furnace, the local furnace temperature suddenly rises, which will cause a local hard shell to appear in the castable, causing the masonry to peel off to a thickness of 20-50mm, which will have a negative impact on the life of the furnace body, especially for furnaces burning heavy oil. In the early stage, wood and oilcloth were used to bake the oven, and similar accidents were very prone to occur.