Adjustable oxygen supply system and method for oxygen-enriched smelting furnace

Abstract

The invention relates to the field of smelting furnace oxygen supply systems, in particular to an adjustable oxygen supply system for an oxygen-enriched smelting furnace. An air spraying pipe is included, a stretching pipe is in butt joint with the lower part of the air spraying pipe, and the air spraying pipe and the inner side of the stretching pipe are jointly and fixedly connected with a material spraying pipe extending in the middle axis direction; and a rotating frame is jointly and rotationally connected to end openings, close to each other, of the air spraying pipe and the extending pipe, a connecting sleeve is fixedly connected to the lower end of the rotating frame, a plurality of rotational flow blades are arranged on the outer surface of the connecting sleeve, the outer surface of the material spraying pipe is movably sleeved with the connecting sleeve and the rotating frame, and a connecting cylinder is arranged on the outer side of the rotating frame in a sleeving mode. The invention further provides an adjustable oxygen supply method for the oxygen-enriched smelting furnace. The adjustable oxygen supply method is applied to the Isa smelting process, the lower end of the stretching pipe is not directly inserted into a hot melt material in the smelting process for smelting of crushed sheet metal chippings during copper metal recovery, rapid hot melting of the sheet chippings is facilitated, uniform feeding of the chippings is ensured, and the hot melting efficiency is improved.

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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