Rapid molten iron conveying method and device combination between interfaces of molten iron and molten steel

Abstract

The invention relates to a rapid molten iron conveying method and a device combination between interfaces of molten iron and molten steel and belongs to the technical field of metallurgical industry. A molten iron conveying line is configured between a blast furnace or a blast furnace group center line and a converter or a converter group center line, and the molten iron conveying line is configured on one side of a blast furnace casting house; from the blast furnace casting house down into a converter charging aisle, the molten iron conveying line is provided with at least one interruption to divide the molten iron conveying line into a blast furnace side molten iron conveying line and a converter side molten iron conveying line which are connected with each other through a transition device, a molten iron conveying unit consists of a molten iron conveying carrier vehicle and a molten iron jar located on the molten iron conveying carrier vehicle, and the molten iron conveying unit is operated on the molten iron conveying line from the blast furnace casting house down into a converter workshop. According to the rapid molten iron conveying method and the device combination between the interfaces of molten iron and molten steel, a molten iron conveying mode from the blast furnace to a converter is changed, layout of conveying lines is changed, and purposes of saving investment and reducing energy consumption are achieved.

Description

technical field [0001] The invention relates to a method for rapidly transporting molten iron between molten iron and molten steel interfaces, and belongs to the technical field of metallurgical industry. Background technique [0002] At present, the interface between the blast furnace and the converter in the metallurgical industry is far away. When the molten iron from the blast furnace is transported to the converter, the torpedo tanker or molten iron tanker filled with molten iron is usually transported to the converter workshop by train. The line is long and occupies a large area; there are many locomotives and tank cars, and the investment in equipment is large; under the blast furnace casting yard, it is necessary to wait for multiple tank cars to be filled with molten iron before transporting to the converter. When arriving at the converter workshop, the molten iron in each tank needs to be mixed into The converter can only be returned to the casting yard after all t...

AI Technical Summary

Problems solved by technology

[0002] At present, the interface between the blast furnace and the converter in the metallurgical industry is far away. When the molten iron from the blast furnace is transported to the converter, the torpedo tanker or molten iron tanker filled with molten iron is usually transported to the converter workshop by train. The line is long and occupies a large area; there are many locomotives and tank cars, and the investment in equipment is large; under the blast furnace casting yard, it is necessary to wait for multiple tank cars to be filled with molten iron before transporting to the converter. When arriving at the converter workshop, the molten iron in each tank needs to be mixed into The converter can only be returned to the casting yard after all the tanks are emptied. The tanks wait for a long time in the blast furnace and converter, and the molten iron cools down greatly, which is not conducive to energy saving; the transportation link consumes a lot of power

CN102004815A discloses a method for optimizing the interface mode of "one tank to the bottom" in the blast furnace-converter section of an iron and steel enterprise, and carries out real-time tracking and online monitoring and diagnosis of the production process of the "one tank to the bottom" interface mode in the blast furnace-converter section to reduce The waiting time before entering the converter, but only optimized on the basis of the existing railway train transportation, the waiting time before the converter cannot be effectively reduced

This process needs to set up at least two cross-car and railway mixed operation lines and one railway operation line under the blast furnace casting yard, which are used for the mediation of production imbalance between blast furnace and converter, and the railway operation in the cross-span car and railway mixed operation line The line is a standard gauge railway. Since the standard gauge railway has a very large turning radius and needs to be connected with a railway operating line (standard gauge), it occupies a large area and has many railways, which increases investment; Weighing device, each electric straddle car needs to be equipped with a weighing device, there are many weighing devices, and the weighing device is affected by the long-term heat radiation of the tank radiation, especially the impact of the spilled high-temperature molten iron, and the weighing device is very fast. It will be damaged and needs frequent calibration; although the distance between the blast furnace and the converter is shorter than that of the traditional railway transportation, it is still longer and there is still the possibility of shortening; the molten iron tank that is not full needs to be switched from the driving of the converter feeding span to the next On the straddle car at the second tapping position, return to the blast furnace casting yard and wait for the next tapping, the operation time is long

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