Ladle lining structure and slag preventing paint

Abstract

The present invention discloses one kind of new ladle lining structure and slag preventing paint. The slag preventing ladle structure includes from inside to outside the work lining layer, the permanent cast material lining layer, and the ladle wall. The work lining layer includes the lower laid structure and the upper cast structure, and has slag preventing coating on the inner wall. The slag preventing paint consists of Al2O3 20-42 wt%, Na2SiO3 15-25 wt%, phenolic resin 3-7 wt%, amorphous carbon 15-25 wt% and SiO2 15-25 wt%. The technological scheme of the present invention results in greatly prolonged service life of the ladle, low production cost and reduced environmental pollution.

Description

[0001] 1. Technical field: the present invention relates to a molten iron tank and a coating, in particular to a molten iron tank with a new lining structure and an anti-slagging coating. 2. Background technology: [0002] The molten iron tank is a special container for hot charging of molten iron in the blast furnace. Its main purpose is to hold the high-temperature molten iron in the blast furnace, send it to the ironmaking process by means of transportation, and return it to the blast furnace for repeated use. At present, the general masonry method of the molten iron tank is: the permanent lining of the molten iron tank is built with refractory bricks or general castables, and the working lining is built with clay bricks, high alumina bricks or aluminum silicon carbide carbon bricks as a whole. Since the mouth of the molten iron tank is prone to slagging during use, with a thickness of 300-500mm, when the slagging of the entire tank mouth reaches more than 80%, the molten ir...

AI Technical Summary

Problems solved by technology

Since the mouth of the molten iron tank is prone to slagging during use, with a thickness of 300-500mm, when the slagging of the entire tank mouth reaches more than 80%, the molten iron tank will not be able to operate normally, and slagging must be carried out. The bricks are bonded together, so the working lining will be removed together with the slag during the slag removal process, and the slag removal work is a frequently occurring process in the use of molten iron tanks. After the slag removal, a large amount of working lining materials are required to repair , which not only wastes materials, but also affects production, increases the labor intensity of workers and masters, and at the same time creates a large amount of refractory waste, polluting the environment

[0003] As for the problem of easy slagging of molten iron tanks, some manufacturers have conducted research on this. A better solution is to spray a layer of paint on the surface of the working lining to form an isolation layer between the iron slag and the working lining. The damage to the working lining can be reduced to a certain extent, but there are problems in the use of this coating: first, the coating cannot be evenly attached to the surface of the working lining when sprayed, and the coating layer is easy to fall off after baking; The affinity of slag is weak, and the working lining is still damaged to varying degrees when slag is picked up

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