Industrial furnace and production process for composition adjustment of smelting slags

Abstract

The invention discloses an industrial furnace and a production process for composition adjustment of smelting slags. The industrial furnace comprises a mixing furnace, a connecting material tank, a smelting furnace and a discharging groove, wherein the mixing furnace is used for mixing and pre-smelting; the connecting material tank is inclined from a high position to a low position; the smelting furnace is used for smelting; the higher end of the connecting material tank is connected with a mixing furnace discharging opening of the mixing furnace; the lower end of the connecting material tankis connected with a feeding opening of the smelting furnace; the discharging groove is connected with a smelting furnace discharging opening of the smelting furnace; the furnace body structure, the feeding mode, the flow control, recycle of secondary solid wastes and the like of the industrial furnace are specifically designed in combination with technological conditions for slag tapping of the smelting slags, so effective compositions of the smelting slags can be fully utilized, meanwhile sensible heat contained by the smelting slags can be recycled farthest, and resource utilization of multi-variety high-additional-value products can be realized by utilizing various types of smelting slags.

Description

technical field [0001] The invention belongs to the technical field of industrial energy saving and environmental protection, and relates to a device for adjusting the composition of smelting slag in a high-temperature molten state, in particular to an industrial furnace and a production process for adjusting the composition of smelting slag. Background technique [0002] With the rapid development of my country's economy, the metallurgical industry (ferrous metals and non-ferrous metals) has developed rapidly, and the output of various industrial solid wastes has increased accordingly, which not only occupies a large amount of land, seriously pollutes the environment, but also causes waste of resources. Among them, a large amount of high-temperature molten slag is discharged during the smelting process of ferrous and non-ferrous metals, which is huge in quantity and various in variety. The temperature of these molten slags are all in the range of 1400-1500°C, containing a l...

AI Technical Summary

Problems solved by technology

In the prior art, most of the industrial furnaces used to adjust the composition of the above-mentioned smelting slag are electric arc furnaces, which are similar to submerged arc furnaces. The melt is heated by high-temperature arcs, and the thermal efficiency is low. Large pollution; the furnace is bulky, and water-cooled furnace shell is usually used, resulting in serious heat loss; the adaptability to slag is small, and the mixing ability for high-temperature materials is insufficient, resulting in limited and uneven adjustment range of melt composition, and uncontrollable product quality ; and the life is short, usually 1 to 2 years, the operating environment is harsh, the production stability is poor, especially the electrode is consumed rapidly, and it needs to be replaced frequently (2 to 3 days), which increases the difficulty of operation and production costs, and cannot be used for waste recycling , will generate secondary solid waste

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