Device for continuously removing iron block and ferrous powder from slag

Abstract

The present invention relates to vertical grinder iron remover for fine mineral slag powder production, and is especially continuous mineral slag iron remover. The mineral slag iron remover includes an iron powder lifting set comprising permanent magnetic drum, belt and cylinder installed below the mineral slag bin, a belt iron removing set installed behind the iron powder lifting set and a iron powder accepting trough. The present invention can separate most of the iron blocks and iron powder from mineral slag to protect apparatus, prolong the service life of grinding roller and grinding disc, raise yield and lower power consumption. The present invention is suitable for eliminating iron block and iron powder continuously during fine mineral slag powder production.

Description

technical field [0001] The invention relates to a vertical mill iron removing device in the production process of slag micropowder, in particular to a device for continuously removing iron lumps and iron powder contained in slag. Background technique [0002] Slag is a by-product of the steelmaking process, and contains iron powder particles that are difficult to remove. Because slag is a non-fluid solid particle, the mechanism of the existing belt-type permanent iron remover determines that they can only remove the iron powder. The iron powder passing through the material layer 5 mm below the surface of the belt is removed, while the thickness of the slag layer on the feeding belt in actual production is about 150 mm (feeding at 105 tons / hour), that is, the 145 mm thick material layer. The iron powder particles cannot be removed by the original belt-type permanent iron remover, and these iron powders that have not been removed enter the vertical mill together, which is detr...

AI Technical Summary

Problems solved by technology

[0002] Slag is a by-product of the steelmaking process, which contains iron powder particles that are difficult to remove. Because slag is a non-fluid solid particle, the mechanism of the existing belt-type permanent iron remover determines that they can only remove The iron powder passing through the material layer 5 mm below the belt surface is dropped, while the material layer thickness of the slag on the feeding belt is about 150 mm (feeding at 105 tons / hour) in actual production, that is, 145 mm thick material layer. The iron powder particles cannot be removed by the original belt-type permanent iron remover, and these iron powders that have not been removed will enter the vertical mill together, which is unfavorable to the equipment

The existing belt-type self-unloading iron remover and permanent iron remover can only remove some iron powder particles and metal chunks exposed on the surface during the belt feeding process, and about 80% of the iron powder particles cannot be removed and directly enter the vertical mill , which will accelerate the wear of vertical mill rollers and discs, affect the service life of equipment, and increase production energy consumption. Therefore, iron removal in the production process of slag fine powder is very important

However, it is impossible to remove the iron powder particles in the slag by using the equipment in the prior art

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