An adjustable oxygen supply system and method for an oxygen-enriched smelting furnace

Abstract

The present invention relates to the field of smelting furnace supply systems, in particular to an adjustable oxygen supply system for an oxygen-enriched smelting furnace. A spray pipe extending along the direction of the central axis is fixedly connected, and a rotating frame is connected to the close port of the air spray pipe and the protruding pipe. The lower end of the rotating frame is fixedly connected to a connecting sleeve, and the connecting sleeve The outer surface is provided with a number of swirl vanes, the connecting sleeve and the rotating frame are both movably sleeved on the outer surface of the spray pipe, and the outer surface of the rotating frame is provided with a connecting cylinder, and an oxygen-enriched melting furnace is also provided. Adjusting the oxygen supply method, the present invention is used in the Aisa smelting process, aiming at the smelting of the crushed flake metal scraps during copper metal recovery, the lower end of the pipe extending into the smelting process is no longer directly inserted into the hot melt material, It is conducive to the rapid hot-melting of flake scrap materials, ensuring uniform feeding of scrap materials, and improving hot-melt efficiency.

Description

technical field [0001] The invention relates to the field of smelting furnace supply systems, in particular to an adjustable oxygen supply system and method for an oxygen-enriched smelting furnace. Background technique [0002] The nutrient-rich smelting furnace is used to heat and smelt metal materials. By feeding oxygen and fuel oil for combustion and heating, the metal materials are melted, and the hot-melted metal materials can be discharged. The spray gun inserted in the furnace body sprays oxygen-enriched air and fuel into the vertical molten pool, and the submerged spray produces a turbulent molten pool, thereby performing smelting. In this method, the spray gun is directly in contact with the hot melt material, which is prone to damage; In the recycling of scrap metal, the flake copper metal obtained by crushing is relatively light in texture, and the flake is easily blown by the gas. In the process of melting the metal scrap, the scrap is easy to be sprayed and fly ...

AI Technical Summary

Problems solved by technology

[0002] The nutrient-rich smelting furnace is used to heat and smelt metal materials. By passing in oxygen and fuel oil for combustion and heating, the metal materials are melted, and the hot-melted metal materials can be discharged. The spray gun inserted into the furnace body sprays oxygen-enriched air and fuel into the vertical molten pool, and the submerged spray produces a turbulent molten pool, thereby performing smelting. In this method, the spray gun directly contacts the hot melt material, which is prone to damage; In the recycling of scrap metal, the flake copper metal obtained by crushing is relatively light in texture, and the flake is easily blown by the gas. It is close to the inner wall of the furnace, and it is difficult to be directly heated and melted by the lower end of the spray gun. The hot melt can only be melted slowly by the creep of the hot melt in the molten pool. Especially when the hydraulic hot melt is too little in the initial hot melting stage, the efficiency of hot melting is extremely low. ;In the process of adding raw material debris, the feeding position is relatively concentrated, which is not conducive to uniform hot melting

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