Vapor-proof device for blast furnace slag treating system

Abstract

The invention discloses a vapor-proof device for a blast furnace slag treating system. The vapor-proof device comprises a vapor-proof cover and a barrel shaft device, wherein the vapor-proof cover is covered on a slag sluice, one end of the vapor-proof cover is connected with a cover plate of the slag sluice, and the other end of the vapor-proof cover is provided with a blocking plate for sealing the other end of the vapor-proof cover; the barrel shaft device is erected above the vapor-proof cover, and a vapor-proof curtain matched with the slag sluice in width is wound on the barrel shaft device; the vapor-proof cover is provided with a long and narrow slit for allowing the vapor-proof curtain to pass through and blocking the crushing end of the slag sluice, and the length direction of the long and narrow slit is consistent with the width direction of the slag sluice. The vapor-proof device is simple in structure, small in occupied space for installation and convenient to operate; meanwhile, a dredging and blocking combination method is adopted in the invention, so that vapor is effectively prevented from overflowing at the crushing end of the slag sluice and can be discharged from the tail of the slag sluice, the problem of the insufficient area in front of a furnace is solved, and the environment pollution is also avoided.

Description

technical field [0001] The invention relates to a steam isolation device, and its characteristics relate to a steam isolation device used in a blast furnace slag treatment system. Background technique [0002] Blast furnace smelting is one of the most important methods of iron production. The main product of blast furnace smelting is pig iron, and the by-products are slag, gas and furnace dust. With the development of large-scale blast furnaces and the improvement of the effective volume utilization coefficient of blast furnaces, the blast furnace slag treatment system becomes more and more important along with the blast furnace production, and higher requirements are put forward for the blast furnace slag treatment capacity. Blast furnace slag has many uses. The high-temperature liquid slag is rapidly cooled with water to make water slag, which is the first-class raw material for making bricks and cement. The water quenching process of blast furnace slag is currently the m...

AI Technical Summary

Problems solved by technology

Since the flushing end of the slag flushing ditch is close to the blast furnace, there are many kinds of equipment near the blast furnace, and the space is tight, so it is difficult to install the exhaust cylinder at the flushing end of the slag flushing ditch

Therefore, some methods are to increase the height of the exhaust cylinder in order to increase the exhaust steam volume of the exhaust cylinder, but when the height of the exhaust cylinder is too high, it will cause an increase in cost, and when the wind is strong, the exhaust cylinder will produce lateral wind vibration , when the wind vibration frequency is close to the natural frequency, resonance occurs, causing the exhaust tube to be damaged or blown down

Moreover, even if the height of the exhaust cylinder is increased, a large amount of water vapor still overflows from the flushing end of the slag flushing ditch

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