A kind of iron ladle and preparation method thereof

Abstract

The application provides a molten iron tank and a preparation method thereof, belonging to the technical field of molten iron tanks used in the iron and steel industry. In the ladle, the first working layer includes a layer of working bricks. The first casing and the second casing are integrally formed, and the thickness of the casing is 15-25mm. The insulation layer is a layer of clay bricks, and the thickness of the insulation layer is 30-35mm; the permanent layer includes multiple layers of pyrophyllite bricks and multiple layers of second castable layers stacked from bottom to top, and the gap between two adjacent layers of pyrophyllite bricks Pour a second castable layer, the thickness of the permanent layer is 40-60mm. The nano-reflective layer includes a plurality of nano-reflective plates laid on one layer. The nano-reflective plate includes aluminum foil and nano-silica powder wrapped in the aluminum foil. The thickness of the nano-reflective plate is 4-8mm. The second working layer includes two layers of working bricks from outside to inside. The molten iron tank can maintain the volume of the molten iron tank and increase its strength without increasing the weight, and can avoid excessive temperature drop of the molten iron.

Description

technical field [0001] The present application relates to the technical field of molten iron tanks used in the iron and steel industry, in particular, to a molten iron tank and a preparation method thereof. Background technique [0002] In recent years, many old steel mills have canceled the mixed iron furnace and adopted the "one-pot system for molten iron" process, which integrates the functions of receiving, transporting, buffering and storing molten iron from the blast furnace, pretreatment of molten iron, adding iron to the converter, and keeping the molten iron warm. As a whole, this can reduce the operation of pouring molten iron, reduce the temperature drop of molten iron, and reduce iron loss. However, the "one-can system for molten iron" has more stringent requirements for the refractory materials of the molten iron tanks. Minimized temperature drop and disposable life of the ladle tank. [0003] Some old steel mills encountered the following problems in the proce...

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Problems solved by technology

[0002] In recent years, many old steel mills have canceled the mixed iron furnace and adopted the "one-pot system for molten iron" process, which integrates the functions of receiving, transporting, buffering and storing molten iron from the blast furnace, pretreatment of molten iron, adding iron to the converter, and keeping the molten iron warm. As a whole, this can reduce the operation of pouring molten iron, reduce the temperature drop of molten iron, and reduce iron loss. However, the "one-can system for molten iron" has more stringent requirements for the refractory materials of the molten iron tanks. Minimized temperature drop and disposable life of the ladle tank

[0003] Some old steel mills encountered the following problems in the process of transforming hot metal tanks: If you want to increase the strength of the hot metal tank, you need to thicken the material of the hot metal tank, which will reduce the volume of the hot metal tank; if you want to ensure The volume of the molten iron tank, in order to increase the material thickness of the molten iron tank, will make the material of the molten iron tank expand outwards, increase the weight of the molten iron tank, so that the total weight of the molten iron tank filled with molten iron will not be able to meet the requirements of the old steel factory. Running on the car; if the material of the molten iron tank is directly strengthened, for example: using more metal, the temperature drop of the molten iron will be too large, the temperature of the cladding is too high, and the temperature of the molten iron is too low, which is prone to cold iron phenomenon

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