Environment-friendly anti-convolution dust collector for ironmaking blast furnace

Abstract

The invention discloses an environment-friendly anti-convolution dust collector for an ironmaking blast furnace. The structure of the dust collector comprises a cylinder body, an air inlet, an outlet,an anti-convolution device, a cone, an ash discharging port and a support frame. The invention has the following beneficial effects: a triangle pyramid is used as a magnetic structure to timely adsorb metallic substances in the separated dust particles so as to avoid the metallic substances from being discharged along with the dust particles and prevent the heavy metal pollution to the environment; by setting the inner included angle between the triangle pyramid and the cone cylinder to be less than 45 degrees and greater than 20 degrees, an auxiliary acceleration effect is effectively provided for the falling of the separated dust particles; since bend holes have a folded line structure and have orientation consistency, the separated dust particles will not be rolled up to be mixed withunseparated dust particles for lost work when the airflow is in backward movement; and a circular ring formed by a disc and an arc-shaped ring is used as a hourglass structure to accelerate the flow velocity of the dust particles.

Description

technical field [0001] The invention relates to the field of dust removal for ironmaking blast furnaces, more precisely, an environment-friendly anti-rotation dust removal device for ironmaking blast furnaces. Background technique [0002] Ironmaking blast furnace is one of the important links in the production of iron and steel, which determines the quality of iron and steel smelting. Because of its simple process and large production volume, the iron smelted by this process still accounts for 95% of the world's total iron production. % or more, the high proportion of its smelting brings a series of environmental problems, because iron ore, coke, and solvent for slag making need to be loaded from the furnace top during blast furnace production, so a large amount of Toxic gas, and currently this kind of toxic gas is effectively treated by gravity dust collector, bag filter and other equipment. Because the flue gas is produced during ironmaking, there is a trace amount of met...

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the object of the present invention is to provide an environmental protection anti-rotation dust removal device for iron-making blast furnaces to solve the problem in the prior art that the flue gas is produced during iron-making, so the gas is mixed with a small amount of Metal, metal and dust are easy to adsorb each other. When using the gravity dust collector to treat the dust, it cannot effectively recover the metals entrained in the dust, resulting in metals entrained in the particulate dust at the discharge site, resulting in heavy metal pollution. At the same time, because the gravity dust collector adopts a double-structure vortex centrifugal separation, when it is doing reverse rotation, the isolated dust particles are easily rolled up by its reverse airflow and fused with the unisolated dust, resulting in useless flaws

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