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Activated grinding aid for steel slag micropowder and preparation method thereof

A technology of steel slag micropowder and grinding aid, which is applied in the field of additives, can solve the problems that the 28-day activity index of steel slag micropowder is not improved and improved, the effect of improving the activity of steel slag micropowder is not good, and the effect is not obvious, and the process of measuring and adding is cumbersome. , Excellent grinding aid effect and simple preparation process

Inactive Publication Date: 2016-02-10
山东山铝环境新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As can be seen from the table, the 7d and 28d activity indexes mixed with 0.05% amide compound increased by 8.64% and 5.93% compared with the blank sample; the 7d and 28d activity indexes mixed with 0.02% glycerol increased by 5.7% and 1.78% compared with the blank sample; The conventional grinding aid in cement grinding and triethanolamine as an early strength agent have poor activity enhancement effect on steel slag micropowder, its 7d activity index is only 2.55% higher than that of the blank sample, and its 28d activity index is 0.59% lower than that of the blank sample.
[0008] Most of the prior art and research use traditional cement grinding aid components such as triethanolamine and glycerin as grinding aid components and activators of steel slag powder, but the effect is not obvious in practical applications, and the 28-day activity index of steel slag powder has not been obtained. improve and improve

Method used

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  • Activated grinding aid for steel slag micropowder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 35 parts by weight of formamide, 30 parts by weight of diethanol isopropanolamine (DEIPA), and 14.8 parts by weight of N,N,N',N'-tetrakis(2-hydroxyethyl)ethylenediamine (THEEDA) into 20 parts by weight The parts by weight of water are mixed and stirred, and then 0.2 part by weight of tributyl phosphate (TNBP) and 0.1 part by weight of triisobutyl phosphate (TIBP) are added to obtain an activated grinding aid.

[0026] According to the method of Comparative Example 1, 0.03% of the activated grinding aid prepared in this example was added to steel slag for small mill grinding, and the measurement results of the material after grinding are shown in Table 1.

Embodiment 2

[0028] Take 37.8 parts by weight of dimethylamide (DMF), 7 parts by weight of N,N-bis(2-hydroxypropyl)-N-(hydroxyethyl)amine (EDIPA), 5 parts by weight of diethanol isopropanolamine (DEIPA) Parts by weight, 3 parts by weight of triisopropanolamine, 12 parts by weight of N, N, N', N'-tetrakis (2-hydroxypropyl) ethylenediamine (THPEDA) phosphate, are successively dropped into 30 parts by weight of water and mixed, After stirring, 0.2 parts by weight of a defoamer triisobutyl phosphate (TIBP) was added to obtain an activated grinding aid.

[0029] According to the method of Comparative Example 1, 0.05% of the activated grinding aid prepared in this example was added to steel slag for small mill grinding, and the measurement results of the material after grinding are shown in Table 1.

Embodiment 3

[0031] Take 21 parts by weight of formamide, 3 parts by weight of acetamide, 5 parts by weight of diethanol isopropanolamine (DEIPA), 1.85 parts by weight of triisopropanolamine, N,N,N',N'-tetrakis(2-hydroxy Propyl) ethylenediamine (THPEDA) acetate 7 parts by weight, THEEDA 2 parts by weight were put into 60 parts by weight of water, mixed and stirred, and then added 0.05 parts by weight of defoamer tributyl phosphate (TNBP), triisobutyl phosphate 0.1 parts by weight of ester (TIBP) to obtain an activated grinding aid.

[0032] According to the method of Comparative Example 1, 0.08% of the activated grinding aid prepared in this example was added to steel slag for small mill grinding, and the measurement results of the material after grinding are shown in Table 1.

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Abstract

The invention relates to an activating grinding aid for steel slag micro-powder, and a preparation method thereof. The activating grinding aid comprises the following raw ingredients in parts by weight: 15-45 parts of an amide compound, 3-35 parts of alkanolamine, 5-20 parts of ethylene diamine or derivatives thereof, 0.1-0.5 part of a defoaming agent, and 15-70 parts of water. The preparation method for the activating grinding aid comprises the steps of: sequentially adding the 15-45 parts of amide compound, 3-35 parts of alkanolamine and 5-20 parts of ethylene diamine or derivatives thereof into 15-70 parts of water for mixing and stirring, and then adding the 0.1-0.5 part of defoaming agent to the mixture to obtain the activating grinding aid for the steel slag micro-powder. The activating grinding aid for the steel slag micro-powder is simple in preparation technique and less in usage amount, and is not only excellent in grinding aiding effect, but also capable of improving the activity index, especially 28d activity index, of the steel slag micro-powder; and the steel slag micro-powder does not contain chloride ions, thus meeting the national standard.

Description

technical field [0001] The invention belongs to the additive used in the technical field of industrial solid waste resource utilization, and in particular relates to an activated grinding aid for steel slag micropowder and a preparation method thereof. Background technique [0002] Steel slag is a by-product of the steelmaking industry, and its emissions account for about 15% to 20% of crude steel production, of which more than 70% of steel slag is converter steel slag with a chemical composition similar to silicate clinker, which has potential gelling properties. It has great application potential in cement concrete. At present, the stock of steel slag in my country has exceeded 100 million tons, but its effective utilization rate is less than 10% due to its large fluctuations in chemical composition and poor hydration performance. The micronization of steel slag and its high-efficiency application in the cement concrete industry have become one of the important ways to re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B5/00
Inventor 李伟峰马素花沈晓冬
Owner 山东山铝环境新材料有限公司
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