Drying method and device for steel slag tailings

Abstract

The invention discloses a drying method and device for steel slag tailings. According to the drying method, waste heat boiler exhaust is adopted to dry steel slag tailings obtained after wet treatment, and the propose of shortening tailing dewatering time is achieved. The drying device comprises a loader for conveying tailings, a tailing receiving bin for receiving tailings, a first belt conveyer, a rotary drum dryer for heat exchange of tailings and waste heat boiler exhaust, a dust removal unit, an intermediate bin, a second belt conveyer, a bucket elevator for elevating tailings, and a finished product bin. By means of the drying method and device for steel slag tailings, the drying time of tailings obtained after wet treatment can be effectively shortened, the area occupied by tailings is reduced, the demand for comprehensive utilization of steel slag resources is met, the production cost of iron and steel enterprises is reduced, and the economic benefit of enterprises is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method and device for drying steel slag tailings. Background technique [0002] With the improvement of production enterprises' understanding of steel slag recycling to reduce production costs, more and more attention has been paid to the comprehensive utilization of steel slag. With the application of jigs and shakers, a large amount of tailings after wet treatment need to be further dehydrated and dried before they can be comprehensively utilized in the next stage. [0003] The traditional treatment method is to filter the tailings after wet treatment through a plate and frame filter press, but the moisture content of the tailings after this method is still as high as 15%, which cannot meet the low requirements required by the cement production industry. Due to the moisture content requirement of 3%, if it is processed by drying in the sun, it will take up a l...

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Problems solved by technology

[0003] The traditional treatment method is to filter the tailings after wet treatment through a plate and frame filter press, but the moisture content of the tailings after this method is still as high as 15%, which cannot meet the low requirements required by the cement production industry. Due to the requirement of a moisture content of 3%, if it is dried in the sun or air-dried, it will take up a large area of ​​storage space and require good climatic conditions, which will cause certain difficulties for the production of enterprises.

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