Steel slag stewing pond for processing high-temperature liquid iron oxide slag at large scale

Abstract

The invention provides a steel slag stewing pond structure design scheme for processing high-temperature liquid iron oxide slag at a large scale. The slag stewing pond is in a U shape enclosed by three composite walls, and the U-shaped opening surface is stacked into a dam by steel slag crushed materials, thereby forming a cofferdam-shaped slag stewing pond which is opened at the upper part. The composite wall is formed by compounding reinforced concrete and a refractory material, the inner side of the enclosing wall of the slag stewing pond is made of the refractory material, and the outer side is made of the reinforced concrete. A spray system is arranged on the tops of the three enclosing walls and used for spraying steel slag after the slag stewing pond collects the slag. The bottom of the slag stewing pond is provided with a water percolation support structure which can percolate and drain accumulated water in the pond. The slag stewing pond can directly receive high-temperature liquid iron oxide slag and carry out water quenching and slag stewing by fully utilizing the heat of the steel slag. In view of cycle operation and convenient maintenance, a plurality of slag stewing ponds can be adjacently built in rows, the adjacent slag stewing ponds can share the same reinforced concrete wall, and both sides of the share wall are both compounded with refractory material protecting layers.

Description

technical field [0001] The invention relates to the structure design of steel slag high-temperature stewing slag pool technical background [0002] Steel slag stewing has always been a very important environmental protection process in steelmaking production. The residual steel in the slag can be recovered through stewing slag, and the powdered slag after stewing slag treatment can be used as raw materials for the production of other building materials, which is conducive to resource conservation. [0003] However, the existing stewed slags generally cannot realize high-temperature red slag (1400-1600°C) direct stewed slag, and the red slag accumulation must be cooled to a lower temperature (below 800°C) on an open slag site first, and then the cooled slag The block slag is transferred to the stewed slag tank and sprayed with water to stew the slag. Similar patents involve 20410055370.1 and 20420058581.6. [0004] The reason why the stewed slag pool of patent 20410055370.1...

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Problems solved by technology

[0004] The reason why the stewed slag tank of patent 20410055370.1 cannot directly receive red slag is that the high temperature resistance of the lining material of the slag tank is not considered

[0005] The reason why the slag pool of patent 20420058581.6 cannot directly receive red slag should be that the thermal expansion of the metal lining is too large at high temperature, which will seriously deform and pull down the concrete structural wall as the supporting foundation through the anchorage structure

[0006] Another common feature of the above two patents is that they must be covered, so it is difficult to make the size of the structure larger, so the single-tank slag processing capacity will be limited

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