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High-activity ore slag powder and preparation technology thereof

A preparation process and technology of slag powder, which is applied in the field of concrete to achieve the effects of increasing specific surface area, improving activity index and reducing agglomeration

Inactive Publication Date: 2019-01-25
上海明氏建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, finding out the reasons for the low activity of slag powder and seeking ways to improve its activity is a problem that everyone pays close attention to and hopes to solve.

Method used

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  • High-activity ore slag powder and preparation technology thereof
  • High-activity ore slag powder and preparation technology thereof
  • High-activity ore slag powder and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: A kind of highly active slag powder, each component and its corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0041] Step 1, select the alkaline slag with higher active components of Nangang, add triethanolamine in corresponding parts by weight, put it into a vertical mill for grinding, and the vertical mill speed is 120r / min;

[0042] Step 2, drying, passing hot air with a temperature of 105°C into the vertical mill for drying;

[0043] Step 3, putting sodium sulfate, potassium sulfate and slaked lime into a vertical mill for grinding to obtain a mixture;

[0044] Step 4: Grind cement clinker and gypsum together, and then stir and mix with the mixture in Step 3 to obtain high-activity slag powder.

Embodiment 2-10

[0045] Example 2-10: a highly active slag powder, the difference from Example 1 is that the components and their corresponding parts by weight are shown in Table 1.

[0046] Each component and parts by weight thereof in table 1 embodiment 1-10

[0047]

Embodiment 11

[0048] Embodiment 11: a kind of highly active slag powder, the difference from embodiment 1 is that the grinding aid adopts glycerol.

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Abstract

The invention discloses a high-activity ore slag powder and a preparation technology thereof, and relates to the technical field of concrete, which can solve the technical problem of lower activity index of ore slag powder. The high-activity ore slag powder is technically characterized by being prepared from the following components in parts by weight: 100 parts of ore slag, 0.1 to 0.5 part of anhydrous sodium sulphate, 0.1 to 0.5 part of potassium sulfate, 0.2 to 0.4 part of slaked lime, and 0.015 to 0.02 part of a grinding additive. The high-activity ore slag powder has the advantages that the activity index is high, and the specific surface area is large.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a highly active slag powder and a preparation process thereof. Background technique [0002] Slag powder is the abbreviation of granulated blast furnace slag powder. It is a high-quality concrete admixture. It is made of granulated blast furnace slag that meets the GB / T203 standard. body. [0003] Slag powder is a good cementitious material, especially S105 high-grade slag powder has high activity. The concrete added with high-quality slag powder has high strength, good workability, and quick demoulding, which can improve the impermeability and frost resistance of concrete and increase slump. [0004] At present, the slag powder used in the market is less than the national standard S105, with a market share of less than 5%; the market share of S95 slag powder is only less than 35%, which cannot meet the needs of the construction market, especially the national ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B18/14
CPCC04B40/0039C04B18/141C04B22/147C04B22/064C04B24/122C04B22/143C04B7/02C04B24/02Y02W30/91
Inventor 尹双胜周燮峰
Owner 上海明氏建材有限公司
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