阅读说明：本技术 一种粉煤灰生产方法 (Fly ash production method ) 是由 瞿国梁 钱春燕 龚伟忠 王晓祥 童晓三 于 2020-12-04 设计创作，主要内容包括：本发明提供了一种粉煤灰生产方法,具体包括以下步骤：将生产产生的粉煤灰原料进行收集,并使用粉碎机进行初步粉碎；将初步粉碎后的粉煤灰原料进行筛选；将粉煤灰原料喂入烘干机,并进行烘干；将处理后的粉煤灰原料放入到粉煤灰球磨机中进行研磨；将研磨所得的粉煤灰颗粒喷洒活性助剂,并充分混合,混合后得到固态粉末状产品；将所得固态粉末状产品进行加热干燥,干燥后使用粉煤灰球磨机中进行研磨,得到粉煤灰。本发明充分利用粉煤灰,将其转化为可再次使用的产品,大大提供了此类工业废物的循环利用能力。同时减少了堆放废物所需的空地,节约了土地资源,降低了生产成本。(The invention provides a fly ash production method, which specifically comprises the following steps: collecting fly ash raw materials generated in production, and primarily crushing the fly ash raw materials by using a crusher; screening the fly ash raw material after primary crushing; feeding the fly ash raw material into a dryer and drying; putting the treated fly ash raw material into a fly ash ball mill for grinding; spraying an active assistant on the pulverized fuel ash particles obtained by grinding, fully mixing, and mixing to obtain a solid powdery product; and heating and drying the obtained solid powdery product, and grinding the dried solid powdery product in a fly ash ball mill to obtain the fly ash. The invention makes full use of the fly ash to convert the fly ash into a reusable product, and greatly provides the recycling capability of the industrial waste. Meanwhile, the empty space required by stacking the waste is reduced, the land resource is saved, and the production cost is reduced.)

1. A fly ash production method is characterized in that: the method specifically comprises the following steps of,

step 1, collecting fly ash raw materials generated in production, and performing primary crushing by using a crusher;

step 2, screening the preliminarily pulverized coal ash raw materials, screening the coal ash raw materials with the particle size of less than 30 mm, and pulverizing and screening the coal ash raw materials with the particle size of more than 30 mm again;

step 3, feeding the separated fly ash raw material with the particle size of less than 30 mm into a dryer, drying, and discharging water vapor evaporated from the fly ash raw material into a dust collector along with dust-containing waste gas from the dryer;

step 4, putting the treated fly ash raw material into a fly ash ball mill for grinding, screening the ground fly ash raw material, and selecting 900-2000-mesh particles;

step 5, spraying an active assistant on the pulverized fuel ash particles obtained by grinding, fully mixing, and mixing to obtain a solid powdery product;

and 6, heating and drying the obtained solid powder product, and grinding the dried solid powder product in a fly ash ball mill to obtain the fly ash.

2. A fly ash production method as claimed in claim 1, wherein: the drying temperature in the step 3 is 60-80 ℃, and the drying time is 50-70 minutes.

3. A fly ash production method as claimed in claim 1, wherein: the active assistant in the step 5 is any one or more than two of silane, aluminate and titanate which are mixed, and the active assistant accounts for 0.5-1.8% of the weight of the fly ash raw material.

4. A fly ash production method as claimed in claim 1, wherein: and in the step 5, reaction is carried out in a closed negative pressure state.

Technical Field

The invention relates to the technical field of fly ash, in particular to a fly ash production method.

Background

The fly ash is a common additive for concrete, and the active component of the fly ash is mainly Al₂O₃And SiO₂The fly ash has the functions of improving the flowability and the workability of cement concrete, reducing the hydration heat of the concrete and improvingStrength, impermeability, frost resistance and slump of concrete. At present, the main source of the fly ash is that the coal ash is used as fuel, the coal ash is generated in the operation of thermal power plants and urban central heating boilers, and then a large amount of fly ash is directly accumulated in an ash yard, wherein the utilization rate of the fly ash is less than 60 percent, which not only occupies land resources, but also causes pollution to water quality and environment. Therefore, the comprehensive development and utilization of the fly ash are enhanced, and the economic benefit and the added value of the fly ash are improved, which are necessary from the viewpoints of environmental protection, energy conservation or resource recycling.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a fly ash production method, so as to solve the problems in the background art.

The technical problem solved by the invention is realized by adopting the following technical scheme, and the method specifically comprises the following steps:

step 1, collecting fly ash raw materials generated in production, and performing primary crushing by using a crusher;

step 2, screening the preliminarily pulverized coal ash raw materials, screening the coal ash raw materials with the particle size of less than 30 mm, and pulverizing and screening the coal ash raw materials with the particle size of more than 30 mm again;

step 3, feeding the separated fly ash raw material with the particle size of less than 30 mm into a dryer, drying, and discharging water vapor evaporated from the fly ash raw material into a dust collector along with dust-containing waste gas from the dryer;

step 4, putting the treated fly ash raw material into a fly ash ball mill for grinding, screening the ground fly ash raw material, and selecting 900-2000-mesh particles;

step 5, spraying an active assistant on the pulverized fuel ash particles obtained by grinding, fully mixing, and mixing to obtain a solid powdery product;

and 6, heating and drying the obtained solid powder product, and grinding the dried solid powder product in a fly ash ball mill to obtain the fly ash.

Preferably, the drying temperature in the step 3 is 60-80 ℃, and the drying time is 50-70 minutes.

Preferably, the active assistant in the step 5 is any one or a mixture of more than two of silane, aluminate and titanate, and the active assistant accounts for 0.5-1.8% of the weight of the fly ash raw material.

Preferably, the reaction is performed in step 5 under a closed negative pressure state.

Compared with the prior art, the invention has the following advantages: the invention makes full use of the fly ash to convert the fly ash into a reusable product, and greatly provides the recycling capability of the industrial waste. Meanwhile, the empty space required by stacking the waste is reduced, the land resource is saved, and the production cost is reduced.

Detailed Description

In order to make the technical means, the creation features, the work flow and the using method of the present invention easily understand and understand the purpose and the efficacy, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

A fly ash production method specifically comprises the following steps:

step 1, collecting fly ash raw materials generated in production, and performing primary crushing by using a crusher;

step 2, screening the preliminarily pulverized coal ash raw materials, screening the coal ash raw materials with the particle size of less than 30 mm, and pulverizing and screening the coal ash raw materials with the particle size of more than 30 mm again;

step 3, feeding the separated fly ash raw material with the particle size of less than 30 mm into a dryer, drying, and discharging water vapor evaporated from the fly ash raw material into a dust collector along with dust-containing waste gas from the dryer;

step 4, putting the treated fly ash raw material into a fly ash ball mill for grinding, screening the ground fly ash raw material, and selecting 900-2000-mesh particles;

step 5, spraying an active assistant on the pulverized fuel ash particles obtained by grinding, fully mixing, and mixing to obtain a solid powdery product;

and 6, heating and drying the obtained solid powder product, and grinding the dried solid powder product in a fly ash ball mill to obtain the fly ash.

Example 2

A fly ash production method specifically comprises the following steps:

step 1, collecting fly ash raw materials generated in production, and performing primary crushing by using a crusher;

step 2, screening the preliminarily pulverized coal ash raw materials, screening the coal ash raw materials with the particle size of less than 30 mm, and pulverizing and screening the coal ash raw materials with the particle size of more than 30 mm again;

step 3, feeding the separated fly ash raw material with the particle size of less than 30 mm into a dryer, drying, and discharging water vapor evaporated from the fly ash raw material into a dust collector along with dust-containing waste gas from the dryer;

step 4, putting the treated fly ash raw material into a fly ash ball mill for grinding, screening the ground fly ash raw material, and selecting 900-2000-mesh particles;

step 5, spraying an active assistant on the pulverized fuel ash particles obtained by grinding, fully mixing, and mixing to obtain a solid powdery product;

and 6, heating and drying the obtained solid powder product, and grinding the dried solid powder product in a fly ash ball mill to obtain the fly ash.

Preferably, the drying temperature in the step 3 is 60-80 ℃, and the drying time is 50-70 minutes.

Preferably, the active assistant in the step 5 is any one or a mixture of more than two of silane, aluminate and titanate, and the active assistant accounts for 0.5-1.8% of the weight of the fly ash raw material.

Preferably, the reaction is performed in step 5 under a closed negative pressure state.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.