Top-blowing smelting device capable of increasing stirring degree

Abstract

The invention discloses a top-blowing smelting device capable of increasing the stirring degree. In the top-blowing process, a converter swings so as to improve the stirring degree of materials in the converter, and a stirring dead zone is eliminated. According to the technical scheme, the device is characterized by comprising a converter, a converter cover, a support, a driving mechanism, a top-blowing mechanism and a pipeline control mechanism, the converter is rotatably connected with the support, a refractory lining is arranged in the converter, the top-blowing mechanism comprises an air-inlet pipe and a top-blowing pipe, the air-inlet pipe is arranged at the outer side of the converter cover and coaxially and fixedly connected with the converter cover, the top-blowing pipe is arranged at the inner side of the converter cover, and the air-inlet pipe communicates with the interior of the top-blowing pipe. The furnace cover and the top-blowing mechanism can synchronously move along with swinging of the converter, the pipeline control mechanism comprises an arc-shaped pipeline rail, a gas source pipeline and a gas conveying guide pipe, the pipeline rail is arranged over the converter, the inner concave surface of the pipeline rail faces the converter cover, the air-inlet pipe is slidably connected with the inner side of the pipeline rail, the air-inlet pipe is connected with the gas source pipeline through the gas conveying guide pipe, and a follow-up structure enabling the gas conveying guide pipe to synchronously move along with the air-inlet pipe is further arranged in the pipeline rail.

Description

technical field [0001] The invention relates to the field of metal smelting, in particular to a top blowing smelting device with increased stirring degree. Background technique [0002] Converter Steelmaking (ConverterSteelmaking) uses molten iron, scrap steel, and ferroalloy as the main raw materials. It relies on the physical heat of the molten iron itself and the heat generated by the chemical reaction between the components of the molten iron to complete the steelmaking process in the converter without the aid of external energy. It is used in the production of carbon steel, alloy steel and the smelting of copper and nickel. According to the refractory material, the converter is divided into acidic and alkaline. According to the part where the gas is blown into the furnace, there are top blowing, bottom blowing and side blowing. According to the type of gas, it is divided into air converter and oxygen converter. [0003] The top-blowing method is to insert an oxygen lan...

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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