Slag modifier and preparation method thereof

A technology of modifier and steel slag, which is applied in the field of steel slag modifier and its preparation, can solve the problems of low activity of steel slag powder, slow hydration rate, and influence on cement stability and structural stability, so as to improve the degree of hydration and cost Low, active effect

Inactive Publication Date: 2017-12-19
南京成弘建新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with cement clinker, the activity of steel slag powder is very low, and the hydration rate is slow. Direct addition will affect the stability and structural stability of cement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A steel slag modifier for replacing clinker with waste steel slag, which is prepared by weight from the following ingredients: 10% sodium thiosulfate, 5% sodium acetate, 7% modified triethanolamine, 3% white sugar , 5% ammonium acetate, 2% sodium formate, 10% glycerin, 5% molasses, 2% dispersant and 51% water are evenly mixed to obtain steel slag modifier.

Embodiment 2

[0026] A steel slag modifier for replacing clinker with waste steel slag, which is prepared by weight from the following ingredients: 12% sodium thiosulfate, 3% sodium acetate, 13% modified triethanolamine, 5% white sugar , 6% ammonium acetate, 2% sodium formate, 15% glycerin, 3% molasses, 1% dispersant and 40% water are evenly mixed to obtain steel slag modifier.

Embodiment 3

[0028] A steel slag modifier for replacing clinker with waste steel slag, which is prepared by weight from the following ingredients: 8% sodium thiosulfate, 3% sodium acetate, 15% modified triethanolamine, 3% white sugar , 8% ammonium acetate, 1% sodium formate, 13% glycerin, 5% molasses, 1% dispersant and 43% water are evenly mixed to obtain steel slag modifier.

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PUM

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Abstract

The invention discloses a slag modifier, which is obtained by complex formulation and mixing of an activator, a reinforcing agent, a grinding aid, a dispersant and water. The slag modifier comprises the following raw materials: 15-30% of the activator, 12-25% of the reinforcing agent, 25-38% of the grinding aid, 1-3% of the dispersant, and the balance of water; wherein the percentage is mass percentage. The high-molecular dispersant having good chemical stability is used, halogen ions capable of corroding the equipment are not contained, and the gelling activity, hydration speed and degree of the slag are excited. The modified grinding aid and the dispersant are added in a grinding assisted process of the slag so that the slag and mixed clinker are easily ground in a system. The elements which are harmful to cement equipment do not contained, the safety performance is good, spontaneous combustion is not generated, the slag modifier has the advantages of no toxicity, no corrosion and simple experiment operation, compared with common slag modifiers, the doping amount of the slag modifier is low, the raw materials have the advantages of low cost and easy acquisition, the slag modifier has high application prospect, and can be reused on real meaning.

Description

technical field [0001] The invention relates to a steel slag modifier and a preparation method thereof, in particular to a steel slag modifier for replacing clinker with waste steel slag and a preparation method thereof. Background technique [0002] my country is a big steel consumption country. Steel slag is a by-product formed by the added flux and impurities in molten steel during the steelmaking process. About 80~120kg of steel slag is produced per ton of molten steel. The annual production of steel slag is more than 90 million tons, and a large amount of steel slag is the main solid waste in the iron and steel industry. Due to its nature, there is no particularly effective method for direct treatment of steel slag, and the usual treatment method for the produced steel slag is to excavate and load the produced steel slag with equipment such as loading trucks and electric shovels, and then send it to the waste slag yard for landfill. Such slag landfill occupies a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32
CPCC04B40/0039C04B22/147C04B24/04C04B24/122C04B24/10C04B24/02C04B22/002C04B24/24C04B24/32C04B24/16
Inventor 李晓静谢昊刘国华
Owner 南京成弘建新材料有限公司
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