A top blowing smelting device with increased stirring degree

Abstract

The invention discloses a top-blowing smelting device with increased stirring degree. During the top-blowing process, the converter is swung to increase the stirring degree of materials in the furnace and eliminate the dead zone of stirring. The key points of its technical plan are: including converter, furnace cover, support, driving mechanism, top blowing mechanism and pipeline control mechanism, the converter is connected with the support in rotation, the inside of the converter is provided with a refractory lining, and the top blowing mechanism includes an air inlet pipe and a top blowing mechanism. The blowpipe, the air inlet pipe is arranged on the outside of the furnace cover and is coaxially fixedly connected with the furnace cover, the top blowing pipe is arranged on the inside of the furnace cover, and the air inlet pipe communicates with the inside of the top blowing pipe; the furnace cover and the top blowing mechanism can move synchronously with the swing of the converter. The pipeline control mechanism includes an arc-shaped pipeline track, gas source pipeline and gas transmission conduit. The pipeline track is set directly above the converter, the inner concave surface of the pipeline track faces the furnace cover, and the intake pipe is slidingly connected to the inside of the pipeline track. The trachea is connected to the gas source pipeline through the gas delivery conduit, and a follow-up structure is provided inside the pipeline track to make the gas delivery conduit move synchronously with the intake pipe.

Description

Technical field [0001] The present invention relates to the field of metal smelting, specifically a top blow melting apparatus to increase the degree of agitation. Background [0002] Converter steelmaking (ConverterSteelmaking) is to molten iron, scrap steel, ferroalloys as the main raw materials, without the help of additional energy, relying on the physical heat of the molten iron itself and the chemical reaction between the molten iron components to generate heat and complete the steelmaking process in the converter, mainly used for the production of carbon steel, alloy steel and copper and nickel smelting. The converter is divided into acidic and alkaline according to the refractory material, and there are top blowing, bottom blowing and side blowing according to the part of the gas blown into the furnace, and the air converter and oxygen converter are divided according to the type of gas. [0003] The top blowing method is to insert the oxygen spray gun from the top of the ...

AI Technical Summary

Problems solved by technology

However, during the smelting process, because most of the materials are deposited at the bottom of the converter, and it is difficult to stir and turn the materials, only the part of the molten pool close to the surface can fully contact the blowing gas, there is a large dead zone, and the reaction temperature of the molten pool is not high. Uniformity, resulting in excessive oxidation and loss of alloying elements in some areas, poor desulfurization efficiency, so the type and quality of steelmaking are limited to a certain extent

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