Smelting waste storage and treatment method for metallurgical engineering

Abstract

The invention discloses a smelting waste storage and treatment method for metallurgical engineering in the technical field of smelting waste storage. The method comprises the following specific steps: 1, high-temperature flowing metallurgical slag is poured into a metallurgical slag treatment device containing heat recovery, and heat is transferred to medium liquid for heat recovery while cooling; 2, circulating hot water is discharged out of the metallurgical slag treatment device and then transferred into a heat collecting device for heat recycling; and 3, the metallurgical slag treatment device is started again to extrude and crush the cooled and solidified metallurgical slag, so that the metallurgical slag is crushed into small blocks, and then the transferring and recycling treatment process is carried out. The problems that the heat recovery process is extremely difficult to control due to the fact that liquid metallurgical slag is in a fluid state, and existing equipment usually adopts a natural cooling mode before the metallurgical slag is treated and then carries out smashing treatment after the metallurgical slag is cooled, so that metallurgical slag energy is wasted to a certain extent are solved.

Description

technical field [0001] The invention relates to the technical field of smelting waste storage, in particular to a storage and treatment method for smelting waste used in metallurgical engineering. Background technique [0002] All residues and wastes discharged during or after smelting of various metals. Such as blast furnace slag, steel slag, various non-ferrous metal slags, ferroalloy slag, ferrous slag, various dusts, sludge, etc. For a long time, non-ferrous metal slags have been treated with open-air stacking, which not only takes up a lot of land, but also is affected by the atmosphere. Erosion and rainwater infiltration pollute soil, water and the atmosphere. Non-ferrous metal slag containing harmful substances such as lead, arsenic, cadmium, and mercury poses a threat to residents and the environment in the stacking area; copper water quenching slag has the characteristics of not easy to absorb water and high strength after being mixed with lime and compacted. As a...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for storage and treatment of smelting waste used in metallurgical engineering to solve the problem in the above background technology that because the liquid metallurgical slag is in a fluid state, it is extremely difficult to control the heat recovery process, and it is easy to cause fire and damage equipment However, the existing equipment usually uses natural cooling before processing metallurgical slag, and then pulverizes the metallurgical slag after cooling, which causes the waste of metallurgical slag energy to a certain extent; The cooling time is long, which to a certain extent causes the cooling efficiency of metallurgical slag to be low, which affects the time of metallurgical slag treatment process; secondly, long-term open-air placement can easily lead to the deterioration of the surrounding environment

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