Small-middle blast-furnace casting house mill building construction system

Abstract

The invention relates to a small-middle blast-furnace casting house mill building construction system which comprises a mill building construction, a ventilation and dust-removal system and a small-middle blast-furnace casting house structure; the mill building construction comprises a mill building top (2) and a plurality of fences (3); the mill building construction is of a closed type; the ventilation and dust-removal system comprises a through long strip air inlet (4); the small-middle blast-furnace casting house structure comprises a blast furnace (1); the blast furnace (1) is arranged onone side of the mill building construction; the through long strip air inlet (4) is formed in the bottom of fence on the other side, facing a tap hole, of the blast furnace (1); outside fresh air ishorizontally sent in along the bottom of the mill building construction from the through long strip air inlet, and dust-containing high-temperature flue gas generated by the small-middle blast-furnacecasting house structure is pushed into the ventilation and dust-removal system so as to be trapped and discharged out. The system can effectively improve an air flow structure in a mill building, optimize the ventilation blast capacity, improve the smoke dust collection efficiency and prevent the smoke dust from escaping outside.

Description

technical field [0001] The invention relates to a plant structure system of a small and medium-sized blast furnace casting house, which belongs to the field of heavily polluted iron-making plants, and in particular relates to a plant structure and a ventilation and dust removal system of a medium and small blast furnace casting house. Background technique [0002] The furnace capacity is 2500m 3 The following small and medium-sized blast furnaces account for more than 60% of my country's ironworks, and are the main types of blast furnaces used by small and medium-sized iron and steel enterprises. The structure of the casthouse workshop is fully open or semi-open, most of which only have a ceiling or skylight, adopt natural ventilation and exhaust, and the operating platform is semi-open. [0003] A large amount of high-temperature flue gas and smoke dust will be generated during the process of opening the blast furnace to tap iron, blocking the iron hole and flowing molten ...

AI Technical Summary

Problems solved by technology

Due to the lack of other mechanical ventilation measures, no fresh air is introduced into the casthouse platform, the heat exchange efficiency in the workshop is low, and the high temperature generated by local heat radiation affects normal operation

At the same time, due to the lack of effective air flow organization, the smoke and dust spread seriously, the collection efficiency of the dust removal hood is low, and the overall dust removal effect of the casthouse is poor

Coupled with the lack of enclosures around the factory building, most of the smoke dust escapes from the roof of the factory building and its surroundings into the environment in an unorganized form under the action of high-temperature flue gas, causing serious air pollution

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