Calcium aluminate cement

A calcium aluminate cement and cement technology, applied in the field of chemical building materials, can solve problems such as being unsuitable for rotary kilns, and achieve the effects of improving cement quality, stable quality, and reliable quality assurance

Inactive Publication Date: 2007-06-20
ZHENGZHOU DENGFENG SMELTING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition range disclosed by the above-mentioned patent is also not suitable for production in a rotary kiln

Method used

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  • Calcium aluminate cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] to AL 2 o 3 The ratio of CaO is 1.65. Weigh the raw materials of bauxite and limestone, and manufacture them according to the rotary kiln sintering process shown in Figure 1. The specific surface area of ​​the prepared cement is 3950cm 2 / g.

[0027] After performance test: initial setting time 3 hours and 34 minutes

[0028] Final setting time 4 hours and 20 minutes

[0029] One day compressive strength 70.5Mpa

[0030] Make self-leveling floor material

[0031] 30 seconds self flow value 400mm

Embodiment 2

[0033] to AL 2 o 3 The ratio of CaO is 1.58. Weigh the raw materials of bauxite and limestone, and manufacture them according to the rotary kiln sintering process shown in Figure 1. The specific surface area of ​​the prepared cement is 3550cm 2 / g.

[0034] After performance test: initial setting time 2 hours

[0035] Final setting time 2 hours and 25 minutes

[0036] One day compressive strength 56.2Mpa

[0037] Make self-leveling floor material

[0038] 30 seconds self flow value 400mm

Embodiment 3

[0040] to AL 2 o 3 The ratio of CaO is 1.51. Weigh the raw materials bauxite and limestone, and manufacture them according to the electric arc furnace melting process process shown in Figure 2. The specific surface area of ​​the prepared cement is 4000cm 2 / g.

[0041] After performance test: initial setting time 3 hours and 30 minutes

[0042] Final setting time 4 hours 04 minutes

[0043] One day compressive strength 76.4Mpa

[0044] Make self-leveling ground

[0045] 30 seconds self flow value 400mm

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Abstract

A special cement is prepared by making calcium aluminate cement with specific surface 3750+-250cm2/g, adding into AL203 and CaO in proportion of 1.41-1.65, and sintering by rotary-kiln or melting by electric-arc furnace. It has better quality.

Description

technical field [0001] The invention relates to the field of chemical building materials, especially special cement. Background technique [0002] In recent years, chemical building materials have risen rapidly, and various cements with special properties have emerged continuously, among which various premixed mortars (commercial mortars) such as ground self-leveling mortars, tile adhesives, tile thin mastics, sealing materials, and water-stopping and leak-stopping materials , rapid hardening mortar, repair mortar, heat hardening cement products, etc. In Europe, its consumption has greatly exceeded the refractory industry. Special cements that can accelerate the hardening speed of Portland cement have also been highly valued, such as accelerating the hardening speed of Portland cement with traditional calcium aluminate cement. [0003] Calcium aluminate cement is a calcium aluminate (CaO, Al 2 o 3 Abbreviated as CA), calcium dialuminate (CaO, 2AL 2 o 3 Abbreviated as C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32C04B7/44
CPCC04B7/32C04B7/46
Inventor 王建亭周季婻
Owner ZHENGZHOU DENGFENG SMELTING MATERIALS
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