Belite-strontium calcium sulphoaluminate cement

A technology of sulfoaluminic acid and calcium aluminate ferrite, which is applied in the field of cement materials, can solve the problems of unimproved shrinkage and cracking of cement, increased energy consumption of cement manufacturing, and increased consumption of high-quality resources, so as to realize waste utilization and reduce Effects of consumption and saving energy and resources

Inactive Publication Date: 2010-10-13
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low early strength of cement clinker, high firing temperature, increased energy consumption of cement manufacturing, reduced producti

Method used

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  • Belite-strontium calcium sulphoaluminate cement
  • Belite-strontium calcium sulphoaluminate cement
  • Belite-strontium calcium sulphoaluminate cement

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0037] See Table 1 for specific examples of the Belite-calcium strontium sulfoaluminate cement of the present invention.

[0038] Table 1 Cement raw meal chemical composition / weight%

[0039] Numbering

loss

CaO

SiO 2

al 2 o 3

Fe 2 o 3

SO 3

SrO

CaF 2

1#

34.08

43.35

16.73

3.05

2.32

0.15

0.19

0.13

2#

33.64

42.28

16.63

3.01

2.3

0.56

1.31

0.27

3#

32.96

41.94

16.21

2.93

2.27

0.77

2.5

0.42

4#

32.37

41.2

15.91

2.89

2.25

1.33

3.46

0.59

5#

31.26

39.78

15.37

2.78

2.15

2.2

5.71

0.75

[0040] According to the proportioning of the above-mentioned embodiment 1-5# according to the proportion of 1-5#, the present invention will reactant raw material CaO, SiO 2 , Al 2 o 3 , Fe 2 o 3 , SrO, SO ...

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Abstract

The invention discloses belite-strontium calcium sulphoaluminate cement. Cement clinker comprises the following mineralogical phase systems in percentage by weight: 1-20% of strontium calcium sulphoaluminate, 30-60% of dicalcium silicate, 10-45% of tricalcium silicate and 2-20% of calcium aluminoferrite, wherein a chemical formula of the strontium calcium sulphoaluminate is (3-x) CaO.xSrO.3Al2O3.CaSO4, wherein x is equal to 1-3. The invention enhances the early strength of the belite cement, saves the energy and resources, improves the volume stability of the belite cement, and has waste reclamation, environment improvement and low production cost.

Description

technical field [0001] The invention belongs to the technical field of cement materials, and in particular relates to belite-calcium strontium sulfoaluminate cement prepared by using strontium slag as a raw material and using dicalcium silicate and tricalcium silicate as the main mineral phase. Background technique [0002] Tricalcium silicate mineral (C 3 S, also known as Alite) content is generally 50%, or even more than 60%, is the most important mineral phase in cement, it needs to consume a large amount of high-quality limestone, its calcination temperature is as high as 1450 ° C, and emits more CO 2 , increasing production energy consumption and pollution. However, the content of dicalcium silicate in high belite cement is generally higher than that of tricalcium silicate, and its firing temperature is generally 1350°C, and its long-term strength is high, which reduces energy consumption and CO 2 emissions. Moreover, dicalcium silicate consumes one-third less CaO th...

Claims

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Application Information

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IPC IPC(8): C04B12/00
CPCC04B2111/20C04B7/3453C04B2103/001C04B2111/00215Y02P40/10C04B7/364
Inventor 芦令超王守德常钧叶正茂王辉周宗辉黄世峰程新
Owner UNIV OF JINAN
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