A kind of in-furnace heat exchange type electric arc metallurgy equipment for smelting various special alloys

Abstract

The invention relates to the technical field of industrial metallurgical smelting equipment, in particular to furnace heat exchange type electric arc metallurgy equipment for smelting various special alloys. The equipment comprises an air compressor (1), a mixing cylinder (2), a feed hopper (3), a main pipe (4), hollow electrodes (5), an electric furnace (6), electric arc areas (7), branch pipes (8) and a feeding pipe (9). The equipment is characterized in that one end of the mixing cylinder (2) is fixedly connected with a smelting device through the main pipe (4) while the other end is connected with one end of the air compressor (1) fixedly, one side of the mixing cylinder (2) is fixedly connected with the feed hopper (3) through the feeding pipe (9), the smelting device comprises the hollow electrodes (5), the electric furnace (6), the electric arc areas (7) and the branch pipes (8), and one end of each hollow electrode (5) is in through connection with the main pipe (4) through the corresponding branch pipe (8).

Description

technical field [0001] The invention relates to the field of industrial metallurgical smelting equipment, in particular to an in-furnace hot-swapped arc metallurgical equipment used for smelting various special alloys. Background technique [0002] The metallurgical industry refers to the industrial sector for the exploration, mining, selection, smelting, and rolling of metal minerals. The metallurgical industry is an important raw material industrial sector, providing metal materials for various sectors of the national economy, and is also the material basis for economic development. , the metallurgical industry can be divided into ferrous metallurgy industry and non-ferrous metallurgy industry, ferrous metallurgy mainly refers to the production of pig iron, steel and ferroalloys (such as ferrochrome, ferromanganese, etc.), non-ferrous metallurgy refers to the production of the latter including all other metals, and Metallurgy can be divided into rare metal metallurgy indus...

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Problems solved by technology

[0003] The traditional metallurgical smelting of a variety of special alloys requires a heat exchange process outside the furnace, for example, the smelting of "double zero iron" of the ferrosilicon series, the smelting of "medium and low carbon manganese", and the smelting of industrial silicon, etc., all require When tapping iron in the alloy smelting process, a certain amount of flux is added to the molten iron ladle to purify the alloy or increase the trace elements of the alloy, while the hot flux is manually added to the molten iron ladle in batches with a shovel When mixed with molten iron, a certain amount of compressed air must be blown into the molten iron through the connecting pipe at the bottom of the ladle. During the heat transfer process, accompanied by the violent chemical reaction of the molten iron, a large amount of gas is produced, causing air pollution. At the same time, it also causes the molten iron in the ladle to splash. Since there is a nozzle leading to the ladle at the bottom of the ladle in the smelting heat exchange process, compressed air with a certain pressure needs to be blown in to ensure the chemical reaction of the molten iron. If the pressure is too large or If it is too small, it may cause the bottom of the molten iron to flow out and the top to splash. During the heat transfer process, the ladle is operated in the crane suspension, and the bottom of the ladle is connected with a ventilation pipeline, which is easy to break during the pouring of molten iron. And other factors also increase the difficulty of control for the operation of the equipment. If the control is not good, it will often cause damage to the equipment, burn out, and the outflow of molten iron will cause burns to the personnel, causing the entire package of molten iron to fall to the ground and become waste, which increases serious injuries to the operators. Potential safety hazard, because the splashing of molten iron also causes the splashing and outflow of special alloy products, resulting in waste of products, and also causes air pollution in the plant, which has become a technical problem that plagues the special alloy smelting industry

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