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Flammable coal ash and preparation method thereof

A technology of fly ash and magnesium powder, applied in the field of combustible fly ash and its preparation, to achieve the effect of energy saving

Inactive Publication Date: 2008-12-10
NANJING SANBU TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fly ash is mainly composed of residual coke (porous carbon particles) and oxides, and there is no report on the use of fly ash in the fuel field.

Method used

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  • Flammable coal ash and preparation method thereof
  • Flammable coal ash and preparation method thereof
  • Flammable coal ash and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Raw material: 100 kilograms of fly ash, 40 kilograms of plant carbon source, 0.15 kilogram of magnesium powder, 0.3 kilogram of sodium nitrate Preparation method: get plant carbon source, pulverize into 100 mesh particles, add fly ash, magnesium powder and nitric acid Sodium, mix evenly, adjust the fly ash material with tap water until it is kneaded into a ball by hand, and it will disperse when you let go, and you can get combustible fly ash.

Embodiment 2

[0025] Embodiment 2: raw material: 100 kilograms of fly ash, 30 kilograms of plant carbon source, 0.2 kilogram of magnesium powder, 0.2 kilogram of sodium nitrate

[0026] Preparation method: take plant carbon source, crush it into 100-mesh particles, add fly ash, magnesium powder and sodium nitrate, mix evenly, adjust the fly ash material with tap water until it is kneaded into a ball by hand, and it will disperse when you let go. use.

Embodiment 3

[0027] Embodiment 3: raw material: 100 kilograms of fly ash, 50 kilograms of plant carbon source, 0.1 kilogram of magnesium powder, 0.4 kilogram of sodium nitrate

[0028] Preparation method: take plant carbon source, crush it into 100-mesh particles, add fly ash, magnesium powder and sodium nitrate, add common binder, mix evenly, adjust humidity with tap water, dry after molding and use.

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Abstract

The invention discloses a flammable fly ash and a preparation method thereof. The flammable fly ash is prepared through adding a carbon source and an activator into a fly ash. The activator consists of powdered magnesium and sodium nitrate. The fly ash, the carbon source, the powdered magnesium and the sodium nitrate are mixed evenly to generate the flammable fly ash. The invention adds the carbon source and the activator into the fly ash to thoroughly burn the burnt fly ash, utilize again the remained cock which is not burnt out, and make full use of coal resources which decrease with each passing day. The main components of the fly ash which is thoroughly burnt are mineral matters which can further be used for producing building materials. The mixing amount of the fly ash is as high as 80 percent. No smoke and smell are produced during the combustion of the fly ash, and harmful emissions such as sulfur, and carbon dioxide, etc. are essentially not produced as well, thereby bringing about cleanliness and environmental protection. The flammable fly ash can completely replace mine coal for industrial and civilian use. Thus the technical proposal provided by the invention is of great strategic significance on the aspects of energy conservation, emission reduction, environmental protection and comprehensive utilization.

Description

technical field [0001] The invention relates to the field of fuel technology, in particular to a combustible fly ash and a preparation method thereof. Background technique [0002] During the operation of coal-fired power plants, a large amount of fly ash will be produced. Fly ash is one of the industrial wastes with a large discharge volume in my country. With the development of the power industry, the discharge of fly ash from coal-fired power plants is increasing year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms. Therefore, the processing and utilization of fly ash has aroused widespread concern. [0003] At present, the utilization of fly ash is mostly concentrated in the production of building materials and cement, and is also used in the production of hollow glass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/48C10L5/04
CPCY02E50/30
Inventor 马晓英
Owner NANJING SANBU TECH DEV