Liquid grinding aid for steel slag cement and preparation method of liquid grinding aid

A grinding aid and cement technology, applied in the field of grinding aids, can solve the problems of low output of cement mills, low cement strength, long cement setting time, etc., so as to improve grinding efficiency, increase output, and increase material fluidity. Effect

Inactive Publication Date: 2016-01-27
NANJING YONGNENG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose: In order to solve the deficiencies in the prior art and solve the problems of low output, low cement strength and long cement setting time caused by the difficulty of grinding steel slag in the production process of steel slag cement caused by ordinary liquid grinding aids, the present invention provides A kind of steel slag cement liquid grinding aid and preparation method thereof

Method used

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  • Liquid grinding aid for steel slag cement and preparation method of liquid grinding aid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of steel slag cement liquid grinding aid, composition is as follows:

[0015] polymeric polyol 40%,

[0016] Sodium Thiosulfate 5%,

[0017] Water glass 5%,

[0018] Sodium carbonate 1%,

[0019] The balance is water, and the total amount is 100%.

[0020] The preparation method of the steel slag cement liquid grinding aid, the steps are: inject a sufficient amount of water into the reaction kettle according to the formula ratio, heat to 50°C and keep the temperature constant, add sodium carbonate and sodium thiosulfate in turn and stir for 30 minutes, cool down to room temperature and add water glass Stir for 15 minutes, add polymer polyol and stir for 15 minutes, and then filter impurities through a 150-mesh stainless steel sieve to obtain product 1.

Embodiment 2 to Embodiment 5

[0022] Repeat the method of Experimental Example 1 according to the content of each component specified in the following table 1, and obtain the steel slag cement liquid grinding aid product 2 to product 5 of different component content respectively:

[0023] Table 1

[0024] Component (%)

Example 1

Example 2

Example 3

Example 4

Example 5

polymer polyol

40

45

50

40

55

Sodium thiosulfate

5

4

5

8

6

water glass

5

5

8

10

7

Sodium carbonate

1

5

3

5

4

get

Product 1

Product 2

Product 3

Product 4

Product 5

[0025] With the steel slag cement liquid grinding aid product obtained in embodiment 1 to embodiment 5, in the addition amount is 0.03% of cement quality, carry out the comparison experiment and the blank experiment of adding steel slag cement liquid grinding aid and common grinding aid , the experimental resu...

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Abstract

The invention discloses a liquid grinding aid for steel slag cement. The liquid grinding aid comprises raw materials in percentage by mass as follows: 40%-55% of polymeric polyol, 5%-10% of sodium thiosulfate, 5%-10% of sodium silicate, 1%-5% of sodium carbonate and the balance of water, and the sum is 100%. According to the liquid grinding aid, polymeric polyol is adopted to replace more expensive triethanolamine, the material liquidity can be remarkably improved, the grinding efficiency of a grinder is improved, and the output of the grinders per hour is increased; sodium thiosulfate contained in the liquid grinding aid can have good inhibition effect on volume expansion of hardened paste of the steel slag cement; sodium silicate contained in the liquid grinding aid can stimulate the potential activity of steel slag, and 3-day strength and 28-day strength are increased on year-on-year basis; with the adoption of sodium carbonate, the steel slag cement setting time can be adjusted.

Description

technical field [0001] The invention relates to a steel slag cement liquid grinding aid and a preparation method thereof, belonging to the technical field of grinding aids. Background technique [0002] The iron and steel industry is the basic industry of the national economy. Under the situation of the rapid development of the national economy, the iron and steel industry has also shown a trend of leapfrog development. The output of steel has continued to increase in recent years. The improvement of the annual output continues to increase. According to the latest statistics, the production of steel slag in my country in 2004 was 38.19 million tons, and the utilization rate of steel slag was only about 10%. This data shows that the utilization rate of steel slag is very low, and it is still far from the goal of "zero" solid waste discharge in iron and steel enterprises. Actively developing and applying advanced and effective processing technology and resource utilization ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/02C04B103/52
Inventor 刘国华唐慧慧
Owner NANJING YONGNENG MATERIALS
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