Dripping and pulverizing control device and dripping and pulverizing treatment method for steelmaking reducing slag

Abstract

The invention discloses a dripping and pulverizing control device and a dripping and pulverizing treatment method for steelmaking reducing slag. The dripping and pulverizing control device comprises a slag pot, a spray nozzle, a water inlet pipe and a dust cover. The dust cover covers the slag pot and the spray nozzle, spray regions of the spray nozzle correspond to an opening of the slag pot, one end of the water inlet pipe is communicated with a water source, and the other end of the water inlet pipe is communicated with the spray nozzle; a temperature measuring instrument is arranged in the dust cover, and an electric regulating valve is arranged on the water inlet pipe. The dripping and pulverizing control device and the dripping and pulverizing treatment method for the steelmaking reducing slag have the advantages that the dust emission can be obviously reduced in steelmaking reducing slag treatment procedures, dust flying can be effectively controlled, field operation environments can be obviously improved, the steel slag treatment safety can be greatly improved, the labor intensity can be relieved, and the cost can be controlled.

Description

technical field [0001] The invention relates to the field of steel slag treatment, in particular to a dripping pulverization control device for steelmaking reducing slag and a treatment method for dripping pulverization of steelmaking reducing slag. Background technique [0002] Steelmaking reduction slag mainly refers to the molten steel produced in the electric furnace or converter steelmaking process, and then the molten steel composition is adjusted through refining furnace reduction and other processes, and then sent to the continuous casting machine to cast slabs, the slag remaining in the molten steel tank after the molten steel pouring is completed, it is generally It consists of reducing slag and residual molten steel. At present, major domestic steel mills adopt the direct hot pouring method: that is, the steelmaking reducing slag produced in the steelmaking plant is transferred to the steelmaking reducing slag treatment plant for hot pouring treatment, and the ste...

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Problems solved by technology

[0003] (1) The site is seriously polluted by dust

Most of the steelmaking reducing slag sent to the steelmaking reducing slag processing line is produced after refining in the LF furnace. The natural cooling time in the steelmaking process is long, and most of the steelmaking reducing slag falls below 200°C and becomes pulverized. The site lacks necessary dust suppression measures, and a large amount of dust is generated during the on-site tipping and artificial watering cooling process, especially the uneven artificial watering, resulting in long watering cooling time and serious dust pollution on the site

[0004] (2) The separation effect of slag and steel is poor

The steelmaking reducing slag hot spraying process originally used artificial rubber hoses to sprinkle water on the steelmaking reducing slag, which resulted in insufficient watering and uneven watering, resulting in poor slag pulverization and poor separation of slag and steel, which affected subsequent slag steel recovery.

[0005] (3) High processing cost

Due to the poor pulverization effect of the original steelmaking reduction slag hot pouring process, a large amount of slag is still agglomerated, or even super large, and needs to be crushed by rock drills. At the same time, the dust in the factory building requires frequent cleaning, resulting in high processing costs.

[0006] (4) Low processing capacity

The poor pulverization effect of the original steelmaking reduction slag hot spraying process makes it difficult to sort slag steel, and the time for recycling slag steel and watering is long, resulting in low site utilization and low slag treatment capacity

[0007] (5) The hot-splashing process of steelmaking reducing slag adopts artificial watering and hot-sprinkling. If the operation is not done properly, there will be safety hazards such as explosion due to high-temperature steel slag meeting water in the site

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