Immersed top-blown converter

Abstract

The invention discloses an immersed top-blown converter. The immersed top-blown converter comprises a top-blown converter body, wherein a material inlet and outlet is formed in the top of the top-blown converter body, and an immersed top-blown spray gun is inserted into the material inlet and outlet. The reaction efficiency of the converter is high, the immersed top-blown molten pool is used for smelting, materials can be continuously added into the converter, the blowing-out charging time is shortened, and the smelting operation rate is improved. Due to the fact that the immersed top-blowing spray gun can be directly inserted into the molten pool and a hydrocyclone is arranged in the immersed top-blowing spray gun, the molten pool is violently stirred by the immersed top-blowing spray gun, materials are mixed more evenly, and the reaction efficiency in the converter is improved. The top-blown converter is provided with a detection bar, a melt can be sampled and analyzed at any time, the blowing-out sampling frequency is reduced, the converter temperature is kept constant, and the service life of the converter is longer. A supporting ring and supporting roller combined structure is adopted for supporting the top-blown converter, and large and small gear transmission is adopted, so that transmission is more stable, and vibration impact on the converter body is overcome.

Description

technical field [0001] The invention relates to the field of submerged top-blown molten pool smelting, in particular to a submerged top-blown molten pool smelted with a rotating furnace. Background technique [0002] In the prior art, when dealing with materials such as anode slime, materials containing heavy non-ferrous metals, and municipal solid waste, the submerged top-blown furnaces currently in use are all fixed and cannot rotate. The furnace spray gun used in the rotation is mainly a water-cooled spray gun, which cannot realize submerged molten pool smelting, such as the Kaldor furnace, which needs to be equipped with a water-cooled burner and a water-cooled supersonic spray gun for smelting. The Kaldor furnace exists The following deficiencies: [0003] 1. High energy consumption; the external water jacket of the smelting spray gun needs to be fed with water for cooling. Oxygen air requires high pressure, and the power consumption of pressurized oxygen-enriched air...

AI Technical Summary

Problems solved by technology

[0003] 1. High energy consumption; the external water jacket of the smelting spray gun needs to be fed with water for cooling. Oxygen air requires high pressure, and the power consumption of pressurized oxygen-enriched air is large

[0004] 2. The spray gun is easy to slag and block; because the spray gun and burner are water-cooled jackets, the molten slag or melt splashed on the gun head is easy to be solidified, and the gun head becomes smaller and smaller, and finally gets blocked

[0005] 3. The operation is complicated; the heating of the Kaldor furnace needs to be heated through the burner, and the spray gun needs to be inserted during the smelting operation. If the temperature of the furnace drops, the burner must be inserted to raise the temperature while inserting the spray gun for smelting. The operator needs to operate the burner at the same time and spray gun, complex operation

[0006] 4. There are many supporting facilities; during the operation of the Kaldor furnace, the spray gun and burner need to be inserted at the same time, and the spray gun and burner must be equipped with lifting facilities

[0007] 5. Furnace spatter is serious; Kaldor furnace adopts supersonic Lava nozzle, and the fluid ejected at high speed breaks away the melt above the melt, so the melt spatters heavily and the furnace mouth is severely slagged

[0008] 6. The mixing effect of oxygen-enriched air and melt is poor; the mixing of supersonic spray gun and melt in Kaldor furnace is through the supersonic injection of oxygen-enriched air into the melt for mixing, and the melt can only be mixed at the impact point and oxygen-enriched Air mixing, the melt away from the injection point cannot be in contact with oxygen-enriched air, and the utilization rate of oxygen-enriched air is low

[0009] 7. The Kaldor furnace mixes materials through the rotation of the furnace body itself. The structure of the furnace body is complex, the refractory material is severely worn, and the refractory material is quickly lost.

[0012] 10. The supporting lugs of the Kaldor furnace are directly connected to the driving device, which requires a large torque and cannot overcome the vibration and impact of the furnace

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