Blast furnace ash removal system and blast furnace ash removal method

Abstract

The invention relates to the technical field of blast furnace smelting, and particularly discloses a blast furnace ash removal system and a blast furnace ash removal method. The blast furnace ash removal system comprises a level gage, a gravity dust removal bin, a bin pump, a gas delivering mechanism, an ash conveying pipe, an ash storage bin and a filter. The level gage is arranged in the gravity dust removal bin. The bottom of the gravity dust removal bin communicates with a feeding port of the bin pump. A discharging port of the bin pump communicates with a feeding port of the ash storage bin through the ash conveying pipe. The filter is arranged at an opening of the ash storage bin. A discharging port of the gas delivering mechanism communicates with a discharging port of the bin pump. The gas delivering mechanism can discharge compressed gas. An ash discharging valve is arranged at a feeding port of the gravity dust removal bin. A conveying valve is arranged between a discharging port of the gas delivering mechanism and a discharging port of the bin pump. The blast furnace ash removal system is low in combustible gas leakage amount, high in safety, low in raised dust generation amount and good in ash discharging effect.

Description

technical field [0001] The invention relates to the technical field of blast furnace smelting, in particular to a blast furnace ash removal system and a blast furnace ash removal method. Background technique [0002] The waste gas produced by blast furnace smelting, after passing through the central inlet pipe, the air flow suddenly turns and the flow velocity suddenly decreases. The dust particles in the combustible gas settle under the action of inertia and gravity, and reach the bottom of the gravity dust removal bin to form gravity dust. [0003] At present, the blast furnace gravity dedusting method is: manually open the ash discharge pipe of the gravity dedusting bin, let the dedusting ash enter the humidifying mixer and then fall directly to the ground. has been emptied, then close the ash discharge pipe. The dedusting ash that falls to the ground every day is shoveled into the trailer with a forklift and pulled away, and the place where the ash is placed is washed c...

AI Technical Summary

Problems solved by technology

This exposed and open ash discharge method causes dust to escape and generate dust, which fails to meet the environmental protection emission requirements, and there is combustible gas mixed in the gravity dust removal bin, and there is a risk of combustible gas leakage when the gravity dust removal bin is opened.

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