Metallurgical fly ash closed collection and treatment and transportation system and technology

Abstract

The invention discloses a metallurgical fly ash closed collection and treatment and transportation system and technology. The metallurgical fly ash closed collection and treatment and transportation system comprises a fly ash main storage unit, a filter storage unit, a fluidized variable temperature unit, a pneumatic transportation unit and a diffusing unit. The fly ash main storage unit is used for storing fly ashes. The filter storage unit includes a filter module, a coarse material storage module and a fine material storage module, the filter module is used for performing vibration screening on the fly ashes, the fine material storage module is used for fine materials, and the coarse material storage module is used for grinding and storage of coarse materials. The fluidized variable temperature unit is used for heating and dehydrating, cooling or pressurized fluidizing on fine materials and / or the coarse materials. The pneumatic transportation unit is used for transporting the fly ashes to subsequent equipment. The diffusing unit is used for ensuring the pressure balance between the fly ash main storage unit, the filter storage unit and the fluidized variable temperature unit. The metallurgical fly ash closed collection and treatment and transportation system can realize the functions of fly ash collection, screening, grinding, heating, cooling, pressurized fluidizing, storing, pneumatic transporting and the like in a closed system.

Description

technical field [0001] The invention relates to a technology for collecting, processing, and transporting metallurgical raw materials and dust in the smelting process, and in particular to a closed collection, processing, and transporting system and process for metallurgical dust removal. Background technique [0002] During the production and smelting of metallurgical raw materials, the dust removal device collects a large amount of dust, such as coking dust, sintering dust, blast furnace dust, etc. Metallurgical dedusting ash contains high content of coke powder, iron powder and coal powder, which has high reuse value. The application of metallurgical dedusting ash in sintering, blast furnace coal injection and other processes has achieved considerable economic benefits. [0003] At present, most of the metallurgical dust collection and transportation processes in my country are open. During the collection and transportation process, the dust is relatively large, and water...

AI Technical Summary

Problems solved by technology

[0005] 1. The particle size of dedusting ash has a great influence on the pneumatic conveying process, energy consumption and wear of the conveying pipeline. The traditional collection and conveying equipment does not screen the particle size of the dedusting ash, which increases the difficulty of the conveying process and the wear of the conveying equipment, and also increases the Subsequent processing difficulty;

[0006] 2. There is a certain amount of water in the dedusting ash in some places. When the water content is high, it will affect the fluidity of pneumatic conveying, causing the silo and conveying pipeline to be blocked;

[0007] 3. Some hardened dust can easily cause the blockage of the collection and transportation pipeline, aggravate the wear and tear of the equipment, and reduce the reliability of the collection and transportation system

[0008] It can be seen that the existing dust collection and transportation methods do not have a dust pretreatment link, and the material characteristics of the dust collection are not fully considered during the transportation process, which greatly restricts the efficiency, life, energy consumption and reliability of the transportation system.

Images