Steam condensing device of granulating slag pit as well as gas collecting cover thereof and using method thereof

Abstract

The invention discloses a steam condensing device of a granulating slag pit as well as a gas collecting cover thereof and a using method thereof, and belongs to the field of blast furnace granulatingslag treatment. The steam condensing device of the granulating slag pit comprises a pit body and a gas collecting cover, wherein the gas collecting cover is driven by a drive mechanism, and can covera granulating slag slot of the pit body; a de-misting space is formed in the lower side of the gas collecting cover, and is provided with a gas inlet which communicates with the outside; a gas suctionhole of an induced draft fan communicates with the de-misting space, and is used for forming negative pressure in the de-misting space; and a de-mister is arranged in a gas-flow flowing direction inthe de-misting space. The steam condensing device of the granulating slag pit can atomize and absorb rising steam in the granulating slag pit to finally discharge relatively dried gas, so that the de-misting effect is achieved, the problem that mist, which is not beneficial for slag removal operation, is generated by high-temperature vapor in the granulating slag is solved, and environmental pollution is also effectively reduced. The method can be used for simply, quickly and efficiently absorbing vapor in the slag pit, so that high efficiency, stability and safety of slag treatment are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of blast furnace slag treatment, and more specifically relates to a steam condensing device for a slag pool, a gas collecting hood and a using method thereof. Background technique [0002] The slag produced by blast furnace smelting can be widely used to make by-products such as slag cement, heat insulation materials and other building materials after treatment. The blast furnace slag treatment processes adopted by most iron and steel enterprises today include drum dehydration method (Inba method and Tula method), slag pool filtration method (bottom filter method), dewatering tank type (Lhasa method), lifting dehydration type ( Stirring cage method and HK method), Jiaheng method and so on. Among them, the bottom filtration method or the sedimentation tank method has simple equipment and is relatively easy to operate and maintain. It is a commonly used slag treatment method for small and medium-sized blast f...

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Problems solved by technology

[0008] The invention provides a water slag pool steam condensing device and its gas collecting hood. The purpose is to solve the problem that when the existing blast furnace filter residue is treated by the sedimentation tank method, the high-temperature slag water rushing into the pool produces mist which hinders the operation and pollutes the environment.

Among them, the steam condensing device of the water slag pool is equipped with a gas collecting hood, and a demisting structure is added inside the gas collecting hood, which can atomize and absorb the rising steam in the slag pool, and finally discharge relatively dry gas to achieve the effect of demisting, thereby solving the problem of The mist generated by the evaporation of high-temperature water in the water slag pool is not conducive to the problem of slag removal operation, and also effectively reduces environmental pollution

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