CN112028519A

CN112028519A - Superfine powder

Info

Publication number: CN112028519A
Application number: CN202010941422.4A
Authority: CN
Inventors: 周治家; 宋丕武; 周航; 周国杰
Original assignee: Shandong Shunke Building Materials Technology Co ltd
Current assignee: Shandong Shunke Building Materials Technology Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2020-12-04

Abstract

The invention relates to the technical field of ultrafine fly ash grinding, which can realize low power consumption, improve production efficiency, improve the activity index of ultrafine fly ash, save electric energy and reduce production cost on the basis of responding to national call for energy conservation, and simultaneously reduce the addition of cement in concrete and save the single-formula cost of the concrete by using the ultrafine fly ash. According to the technical scheme of the invention, the ultrafine fly ash activating agent is composed of the following raw materials: triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water. The invention can improve the output per machine hour of the mill by about 17 percent, and the ultrafine fly ash which is ground by 13 degrees of average electricity saving per ton in the fly ash production process improves the workability and frost resistance of concrete, saves the water consumption of the concrete, and the like.

Description

Superfine powder

Technical Field

The invention relates to the technical field of fly ash ultrafine grinding production, in particular to a method for saving electric energy, improving the working performance of fly ash and increasing the machine-hour yield of a grinder in the fly ash ultrafine grinding process.

Background

Fly ash is the main solid discharged from coal-fired power plants. The invention relates to an ultrafine fly ash activator, which is mainly characterized in that dry-discharge or wet-discharge coarse ash discharged by a power plant cannot be normally utilized in concrete and is ground by a ball mill for deep processing and applied to the field of concrete.

Disclosure of Invention

The invention aims to lower the production cost and better utilize the ultrafine fly ash in the field of concrete on the basis of better responding to the principle of the solid waste treatment called by the state.

The ultrafine fly ash activating agent provided by the invention has the advantages of low power consumption, high grinding production efficiency, low grinding production cost, high machine-hour yield of a grinding machine, capability of better utilizing the fly ash deep processing to reach the due physical properties of the fly ash in concrete, and realization of energy conservation, environmental protection and comprehensive utilization development of the fly ash.

In order to achieve the above object, a first technical solution of the present invention is as follows: a fly ash grinding aid comprises a fly ash activator, wherein the fly ash activator comprises triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine fly ash activator comprises the following components in parts by mass:

6 to 10 percent of triisopropanolamine

8 to 12 percent of diethanol monoisopropanolamine

15 to 20 percent of urea

5 to 15 percent of sodium sulfate

30 to 55 percent of water

The second technical scheme of the invention is as follows: the fly ash activator consists of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultra-fine fly ash activator comprises the following components in parts by mass:

8 to 15 percent of triisopropanolamine

2 to 6 percent of diethanol monoisopropanolamine

15 to 20 percent of urea

10 to 15 percent of sodium sulfate

35 to 50 percent of water

The third technical scheme of the invention is as follows: the fly ash activator consists of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultra-fine fly ash activator comprises the following components in parts by mass:

12 to 18 percent of triisopropanolamine

5 to 12 percent of diethanol monoisopropanolamine

20 to 30 percent of urea

5 to 15 percent of sodium sulfate

40 to 50 percent of water

The fourth technical scheme of the invention is as follows: the fly ash activator consists of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultra-fine fly ash activator comprises the following components in parts by mass:

14 to 20 percent of triisopropanolamine

8 to 13 percent of diethanol monoisopropanolamine

15 to 20 percent of urea

10 to 15 percent of sodium sulfate

35 to 50 percent of water

Through the technical scheme, the ultrafine fly ash activating agent provided by the invention has the following performance effects:

1. on the premise of the same working performance of the mill, the machine hour output of the mill per hour is improved, and the electric energy is saved.

2. The superfine fly ash utilizes the additive, the water requirement ratio of the fly ash is reduced, and the working performance of the concrete is improved.

The specific implementation mode is as follows:

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.

Example 1

Preparing an ultrafine fly ash activator A, wherein the fly ash activator consists of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine fly ash activator comprises the following components in percentage by mass:

triisopropanolamine 12%

Diethanol monoisopropanolamine 8%

20 percent of urea

Sodium sulfate 5%

55 percent of water

Example 2

Preparing an ultrafine fly ash activator B, wherein the fly ash activator consists of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine fly ash activator comprises the following components in percentage by mass:

18% of triisopropanolamine

Diethanol monoisopropanolamine 12%

30 percent of urea

Sodium sulfate 15%

35 percent of water

Example 3

Preparing an ultrafine fly ash activator C, wherein the fly ash activator consists of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine fly ash activator comprises the following components in percentage by mass:

10% of triisopropanolamine

Diethanol monoisopropanolamine 10%

20 percent of urea

Sodium sulfate 20%

40 percent of water

Example 4

Preparing an ultrafine fly ash activator D, wherein the fly ash activator consists of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine fly ash activator comprises the following components in percentage by mass:

triisopropanolamine 9%

Diethanol monoisopropanolamine 11%

15 percent of urea

Sodium sulfate 15%

Water content is 50%

Application example

When the ultrafine fly ash activator is applied to the ground fly ash, the mixing amounts of the fly ash activator A, B, C, D are respectively 0.1%, 0.2%, 0.3% and 0.4% by mass as shown in the following table: TABLE 1

Numbering	Amount of blending
		Grinding aid without adding fly ash	0
Fly ash grinding aid A	0.1
		Fly ash grinding aid B	0.2
Coal ash grinding aidAgent C	0.3
		Fly ash grinding aid D	0.4

The bench-hour yields for the above formulations are as follows 2:

TABLE 2

Numbering	Output per unit time t/h	Fineness of fineness
			Grinding aid without adding fly ash	32	12%
Fly ash grinding aid A	34	10%
			Fly ash grinding aid B	36	9%
Fly ash grinding aid C	33	11%
			Fly ash grinding aid D	35.5	13%

Table 2, under the same power consumption, the machine hour yield is increased by 12-16% compared with the machine hour yield without the fly ash grinding aid, the fineness change is not large, the grinding cost is reduced, and the machine hour yield is increased. The invention realizes the purposes of reducing power consumption, improving production efficiency and saving electric energy, and improves the working performance of concrete by using pulverized coal ash ultrafine powder ground in the concrete. The raw materials used in the invention which meet the national industry standard are common materials in the market, and the purchase channel is easy to purchase and convenient to produce.

Claims

1. The ultrafine fly ash activator is characterized by comprising triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine fly ash activator comprises the following components in parts by mass:

6 to 10 percent of triisopropanolamine

8 to 12 percent of diethanol monoisopropanolamine

15 to 20 percent of urea

5 to 15 percent of sodium sulfate

30 to 55 percent of water.

2. The ultrafine coal ash activator according to claim 1, wherein the fly ash activator is composed of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine coal ash activator has the following mass components:

8 to 15 percent of triisopropanolamine

2 to 6 percent of diethanol monoisopropanolamine

15 to 20 percent of urea

10 to 15 percent of sodium sulfate

35 to 50 percent of water.

3. The ultrafine coal ash activator according to claim 1, wherein the fly ash activator is composed of triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the ultrafine coal ash activator has the following mass components:

12 to 18 percent of triisopropanolamine

5 to 12 percent of diethanol monoisopropanolamine

20 to 30 percent of urea

5 to 15 percent of sodium sulfate

40 to 50 percent of water.

4. The fly ash activator of claim 1, wherein the fly ash activator comprises triisopropanolamine, diethanolisopropanolamine, urea, sodium sulfate and water, and the fly ash activator comprises the following components by mass:

14 to 20 percent of triisopropanolamine

8 to 13 percent of diethanol monoisopropanolamine

15 to 20 percent of urea

10 to 15 percent of sodium sulfate

35 to 50 percent of water.

5. A fly ash as claimed in claims 1, 2, 3 and 4, wherein the diethanol monoisopropanolamine has a mass purity of 75-85%, triisopropanolamine has a mass purity of 70-80%, urea 80-95%, sodium sulfate has a mass purity of 80-90%, and the water as claimed in claim is tap water.