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Cement containing large-proportion slag and preparation method of cement

A large-scale, cement-based technology that can be used in cement production, sustainable waste treatment, solid waste management, etc., to solve problems such as shortages, reduce corrosion, be affordable, and improve compressive and flexural strength.

Active Publication Date: 2021-03-30
湖北环沙再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, there is currently a lack of a cement containing a large proportion of slag that can meet the above needs and its preparation method in the field.

Method used

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  • Cement containing large-proportion slag and preparation method of cement
  • Cement containing large-proportion slag and preparation method of cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] According to Table 1, the specific raw material is weighed, and the steps are prepared as follows:

[0035] (1) Dilution of triethanolamine is diluted by matching with triethanolamine, then sodium phosphate, industrial salt, and moisture is mixed, and the worn agent is obtained.

[0036] (2) Compare the silicate cement clinker, desulfurized gypsum, fly ash, aluminum sulfate, and aluminum sulfate, and the step (1), which are mixed, and then powder milling 30 min, and fine powder;

[0037] (3) According to the ratio, the sulfate, the potassium sulfate, the potassium sulfate, the potassium sulfate must be mixed, and the tetra-titanate can be mixed, and then the powder mill is 50 min, and the mix is ​​mixed;

[0038] (4) The mixture obtained by the fine powder obtained from step (2) and the step (3) obtained, followed by bake at 50 ° C for 100 minutes in nitrogen protection environments to obtain cement.

Embodiment 2

[0040] (1) Dilution of triethanolamine is diluted by matching with triethanolamine, then sodium phosphate, industrial salt, and moisture is mixed, and the worn agent is obtained.

[0041] (2) Compare the silicate cement clinker, desulfurized gypsum, fly ash, aluminum sulfate, and step (1), and then mixed with powder milling for 40 min, and fine powder;

[0042] (3) According to the ratio, the slag, bases of magnesium sulfate, potassium sulfate, potassium sulfate, tetra-titanate, and tetra-titanate, followed by powder milling for 60 min, resulting in a total mixture;

[0043] (4) The mixture obtained by the fine powder obtained from step (2) and the step (3) obtained, followed by bakeing at 60 ° C for 90 minutes in the nitrogen protection environment to obtain cement.

Embodiment 3

[0045] (1) Dilution of triethanolamine is diluted by matching with triethanolamine, then sodium phosphate, industrial salt, and moisture is mixed, and the worn agent is obtained.

[0046] (2) Compare the silicate cement clinker, desulfurized gypsum, fly ash, aluminum sulfate, and step (1), and then mixed with powder milling for 40 min, and fine powder;

[0047] (3) According to the ratio, the slag, bases of magnesium sulfate, potassium sulfate, potassium sulfate, tetra-titanate, and tetra-titanate, followed by powder milling for 60 min, resulting in a total mixture;

[0048] (4) The mixture obtained by the fine powder obtained from step (2) and the step (3) obtained, then baked at 60 ° C for 100 minutes in nitrogen protection to obtain cement.

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Abstract

The invention relates to cement containing large-proportion slag and a preparation method of the cement. The cement is prepared from the following raw materials in parts by weight: 90 to 100 parts ofPortland cement, 10 to 15 parts of gypsum, 10 to 20 parts of fly ash, 70 to 90 parts of slag, 15 to 20 parts of magnesium sulfate whisker, 22 to 36 parts of potassium titanate whisker, 10 to 16 partsof aluminum sulfate and 7.2 to 12.2 parts of grinding aid. By adding the potassium titanate whiskers into the cement, the compressive strength and breaking strength of the Portland cement are effectively improved, and the cement is superior to ordinary Portland cement on the market. By adding the mixture of the potassium tetratitanate whiskers and the potassium octatitanate whiskers, the whiskersare better adsorbed on the surface of the slag, so that the corrosion of an alkaline environment to slag powder is reduced, meanwhile, the overall sulfuric acid corrosion resistance and salt freezingdenudation resistance of the cement can be further improved, the final setting time is shortened, and the solidification and hardening of the cement are facilitated.

Description

Technical field [0001] The present invention relates to the preparation of building materials, and more particularly to cement containing large proportional slag and its preparation method thereof. Background technique [0002] Cement, powdered hydraulic inorganic gelation materials, add water to the slurry, can hardeize in the air or better harden in the water, and can firmly adhesive sand, stone and other materials; it is an important The gelling material is widely used in civil buildings, water conservancy, defense and other projects. [0003] The current application is the most widely used universal silicate cement. The disadvantage of universal silicate cement is as follows: the cause of hydration, poor anti-sulfate corrosion, poor impermeability, low density. The slag silicate cement is mixed into the appropriate amount of granulated blast furnace slag on the basis of ordinary slag silicate cement components, and its resistance to sulfate erosion, heat resistance, and water...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B18/14C04B14/38
CPCC04B28/144C04B14/383C04B18/141C04B2201/50C04B7/02C04B18/08C04B22/148C04B2103/52Y02W30/91
Inventor 陈辉曹国兵徐新强
Owner 湖北环沙再生资源有限公司
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