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An admixture for improving the activity index of air-cooled slag and its preparation method
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A technology of activity index and admixture, which is applied in the field of admixture, can solve the problems of large dosage, no increase in activity index of air-cooled blast furnace slag, and high cost, and achieve the effects of increasing activity index, promoting dissolution, and accelerating hydration rate
Active Publication Date: 2016-04-20
BEIJING UNIV OF TECH
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Abstract
Description
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Problems solved by technology
Traditional grinding aids basically have no effect on improving the activity index of air-cooled blast furnace slag; the early strength agents in concrete production are mainly composed of inorganic salts, and generally require a large dosage, which not only costs high, but also can only improve the early age. period strength
Method used
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Examples
Experimental program
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Effect test
Embodiment 1
[0024] Get 15 parts of triethanolamine, 15 parts of triisopropanolamine, 10 parts of triethanolamine acetate (the mol ratio of acetic acid and triethanolamine is the product that 1:0.8 obtains), 10 parts of glycerol, 10 parts of sodium thiosulfate and 40 parts of water.
[0025] Add water to the reaction kettle, then add sodium thiosulfate, stir until it is completely dissolved, then add triethanolamine, triisopropanolamine, triethanolamine acetate and glycerol, and stir for 10-30 minutes to obtain the finished product.
Embodiment 2
[0027] Get 10 parts of diethanol monoisopropanolamine, 5 parts of ethylenediaminetetraethanol, 5 parts of triisopropanolamine acetate (the product obtained by the molar ratio of acetic acid and triisopropanolamine at 1:0.7), Malay 5 parts of acid triethanolamine ester, 5 parts of sodium thiocyanate, 10 parts of sodium hydroxide and 60 parts of water. The preparation method is the same as in Example 1.
[0028] Add water to the reaction kettle, then add sodium thiocyanate and sodium hydroxide, stir until completely dissolved, then add diethanol monoisopropanolamine, ethylenediaminetetraethanol, triisopropanolamine acetate, maleic acid Triethanolamine ester was stirred for 10-30 minutes to obtain the finished product.
Embodiment 3
[0030] Take 5 parts of ethylenediamine tetraethanol, 20 parts of triethanolamine acetate (the product obtained by the molar ratio of acetic acid and triethanolamine being 1:0.8), 5 parts of diethylene glycol, 5 parts of polyethylene glycol, and 15 parts of sodium hydroxide. parts and 50 parts of water.
[0031] Add water to the reaction kettle, then add sodium hydroxide, stir until completely dissolved, then add ethylenediaminetetraethanol, triethanolamine acetate, diethylene glycol and polyethylene glycol, and stir for 10-30 minutes to obtain the finished product.
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PUM
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Abstract
The invention provides an admixture for increasing the activity index of air cooling slag and a preparation method thereof and belongs to the technical field of admixtures. The admixture is mainly prepared from a direct complexing component polyol amine, an indirect complexing component polyol amine ester, an auxiliary complexing component polyol, strong electrolyte and water. The admixture is characterized by being prepared from multiple complexing components and a strong electrolyte solution, the ionic concentration of a liquid phase of hydrated paste of air cooling slag of each age can be improved by means of continuous complexing solubilization effect and strong electrolyte solubilization effect, and the hydrating speed of air cooling slag can be accelerated.
Description
technical field [0001] The invention relates to an air-cooled slag admixture and a preparation method thereof, in particular to an admixture capable of improving the activity index of air-cooled slag of various ages and a preparation method thereof, belonging to the technical field of admixtures. Background technique [0002] At present, in my country's iron and steel production enterprises, most of the high-quality residual energy resources have been recycled, but there are still a considerable amount of residual energy resources that are difficult to recycle and have not been utilized in grades, especially the waste heat resources of slag. The main reason is Because the traditional slag granulation process mostly adopts the water quenching method, a large amount of heat energy of the slag is wasted and cannot be effectively recovered. In order to recover the waste heat resources of slag, a new dry granulation process has been gradually applied, that is, the use of air to co...
Claims
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Application Information
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