Separating method of fly ash and device thereof

A separation device and fly ash technology, applied in the direction of solid separation, classification, chemical instruments and methods, etc., to achieve the effects of safety and wide application range, convenient installation and operation, and low energy consumption

Inactive Publication Date: 2012-10-03
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In general, the existing dry separation technology cannot meet the needs of large-scale separation operations of fly ash.

Method used

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  • Separating method of fly ash and device thereof
  • Separating method of fly ash and device thereof
  • Separating method of fly ash and device thereof

Examples

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Embodiment Construction

[0016] The fly ash separation method of the present invention uses gravity to make the thin layer of fly ash flow on the inclined surface of the chute with the horizontal section at the end, and the fly ash particles with different particle sizes, densities or surface shapes produce different After falling into the collection bin, there will be different drop points, that is, it will fall into different collection bins under the action of gravity, so as to realize the separation of fly ash particles. Specifically, the dry fly ash in the hopper falls to the surface of the rotating electric roller and then splashes onto the inclined bottom surface of the chute, and then flows in a thin layer on the inclined bottom surface under the action of gravity. There is a horizontal section on the bottom surface of the end of the chute , particles with different particle sizes, densities or shapes produce different outflow velocities at the end of the horizontal section, and finally fall in...

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Abstract

The invention relates to a separating method of fly ash and a device thereof. The device comprises a hopper, a chute, a collecting bin and the like. After a feeding valve of the chute is opened, dried fly ash in the hopper falls to the surface of a rotating electric roller and then is splashed down into the chute to form thin layer flow with the thickness less than 1mm under the action of gravity, wherein the chute has a gradually-enlarged section and is provided with a clapboard; a platform section is arranged at the tail end of the chute; granules with different granularities, densities or shapes generate different outflow speeds at the tail end of the platform and finally fall into different sub-bins of the collecting bin under the action of gravity; and granules with higher outflow speed fall into the farer sub-bin and granules with lower outflow speed fall to the nearer sub-bin, thereby fly ash granules with different parameters can be separated, granules in different sub-bins are separated products and the separated granules of certain sub bin can be separated in second stage or multistage by repeating the process. The invention has the advantages of simple structure, low energy consumption, high safe reliability, convenient installation and running, wide application range and the like.

Description

technical field [0001] The invention belongs to fly ash separation technology, in particular to a fly ash separation method and a device thereof. Background technique [0002] Coal-fired power plants emit a large amount of solid waste, fly ash, which damages the environment every year. On the one hand, its storage and treatment require a lot of manpower and material resources, and on the other hand, it is a resource that can be used. The utilization of fly ash mainly includes two aspects: one is construction engineering and agricultural fields, using fly ash as a raw material for producing building materials or soil improvement; the other is extracting high value-added products from fly ash, such as glass beads, etc. . Separation of fly ash to obtain a product with a certain characteristic parameter such as particle size, density or shape is an important way to obtain high value-added products. For example, floating beads with a density lighter than water obtained through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B13/08
Inventor 刘心志张后雷朱曙光熊荣辉
Owner NANJING UNIV OF SCI & TECH
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