Coal ash resource treating method

A treatment method and resource recovery technology, applied in the field of coal ash resource recovery, can solve problems such as inconvenience, lack of appropriateness, unstable quality of coal ash, etc.

Inactive Publication Date: 2008-05-28
MIRACLE ENVIRONMENTAL TECH
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Problems solved by technology

[0005] However, due to the different sources of coal sources, various coal-processing equipment, and production operations, the quality of the produced coal ash is not stable, and the ratio of incompletely burned unburned carbon may be between 3 and 30%. Between, if it is used to make cement, it will seriously affect the quality of concrete and endanger the structure of the building, so the law stipulates that coal ash that does not meet the legal standards shall not be used to make cement
[0006] Thi

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Embodiment Construction

[0028] In order to further explain the technical means and effects that the present invention adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation methods, methods, steps, Features and their functions are described in detail below.

[0029] Please refer to Fig. 2 and Fig. 3 first, the coal ash recycling treatment method of the preferred embodiment of the present invention is used to recover high-purity coal ash and unburned carbon, and includes a pretreatment step 1 and a stirring step 2. A primary selection step 3, a coal ash purification step 4, an unburned carbon purification step 5, and a return water step 6.

[0030] In the pretreatment step 1, firstly, the coal ash is inspected and screened to obtain fly ash and bottom ash. As for the bottom ash part, a bucket machine 11 is used to shovel it into a crusher 12 for crushing, and then feed it into a wet grinder 13...

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Abstract

The invention relates to a processing method of reclamation of ash, comprising a pretreatment procedure, a stirring procedure, a primary selection procedure, an ash purification procedure, an unburned carbon purification procedure and a water returning procedure. The procedures of stirring and floatation and the using of the ultrasonic concussion effect can obviously enhance the separation effect of ash and unburned carbon and get purified ash and purified unburned carbon with high purity so as to produce high utilization value and application hierarchy. Furthermore, water produced in the process of dehydration and drying can return and be reused, which greatly reduces the cost of water consumption and ensures the whole structure to achieve the best reclamation treatment effect.

Description

technical field [0001] The present invention relates to a coal ash resource treatment method, in particular to a coal ash resource treatment method which has good resource recovery and treatment effect and can obtain high-purity coal ash and unburned carbon for reuse. Background technique [0002] In the process of burning coal to generate electricity in thermal power plants, about four-fifths of the by-products of coal ash are lighter fly ash, and one fifth is heavier bottom ash. The main components are roughly similar, mainly silicon, aluminum, iron, etc., and mixed with a lot of unburned carbon. Generally, special treatment (such as removing the unburned carbon contained...) is required before it can be mixed into cement / concrete. Otherwise, it can only be discarded and landfilled or reclamated. Among them, the bottom ash is easy to agglomerate and cause uneven particle size, so it is usually directly disposed of in landfill or landfill. [0003] However, the practice of...

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Application Information

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IPC IPC(8): B09B3/00B03D1/00B03D1/004B03D101/04B03D101/02
Inventor 廖昌禧
Owner MIRACLE ENVIRONMENTAL TECH
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