Molten iron tank and manufacturing method thereof

Abstract

The invention provides a molten iron tank and a manufacturing method thereof, which belong to the technical field of molten iron tanks for steel industry. In the molten iron tank, a first working layer comprises a working brick layer; a first cladding and a second cladding are integrally formed, and each cladding is 15-25 mm thick; a thermal insulation layer is a clay brick layer, and is 30-35 mmthick; a permanent layer comprises a plurality of pyrophyllite brick layers and a plurality of second casting material layers which are stacked from bottom to top, and one second casting material layer is cast between very two adjacent pyrophyllite brick layers; the permanent layer is 40-60 mm thick; a nano reflection layer comprises a layer of paved nano reflecting plates, wherein each nano reflecting plate comprises an aluminum foil and nano silicon dioxide powder packaged in the aluminum foil, and is 4-8 mm thick; and the second working layer comprises two working brick layers from outsideto inside. In case of not increasing weight, the molten iron tank can keep capacity and improve strength, and temperature drop of molten iron can be prevented from being too great.

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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