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A white fast setting rapid hardening high belite sulfoaluminate cement clinker, its application and its production process

A special sulfoaluminate and cement clinker technology, applied in the field of building materials, can solve the problems of low early strength, low strength, slow coagulation, etc., and achieve the effects of reducing raw material consumption, reducing heat consumption and reducing exhaust gas emissions.

Active Publication Date: 2017-07-11
TANGSHAN POLAR BEAR BUILDING MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The early strength is low, especially the 3D flexural strength is lower. When manufacturing decorative components, there are many cracks and high damage rates.
It is prone to efflorescence in application, which directly affects the appearance of white cement products. Its slow setting and low early strength are the main reasons for efflorescence

Method used

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  • A white fast setting rapid hardening high belite sulfoaluminate cement clinker, its application and its production process
  • A white fast setting rapid hardening high belite sulfoaluminate cement clinker, its application and its production process
  • A white fast setting rapid hardening high belite sulfoaluminate cement clinker, its application and its production process

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Experimental program
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Effect test

preparation example Construction

[0068] ① Preparation of raw meal: According to the ratio of raw meal in Table 2, weigh the limestone whose chemical composition is shown in Table 1, put it into the raw meal mill, and then enter the raw meal mill tail elevator; at the same time According to the raw material ratio in Table 2, weigh the slag powder and desulfurized gypsum with the chemical composition shown in Table 1, and transport them to the tail elevator of the raw material mill synchronously with the ground limestone, and then transport the three materials to Powder classifier, after being air-selected and mixed by the powder classifier, the qualified raw meal is transported to the raw meal homogenization warehouse, and the unqualified raw meal is sent back to the raw meal mill for further grinding; after homogenization, the raw meal is sent to the kiln.

[0069] In this step, the qualified powder in slag powder and desulfurized gypsum does not enter the raw meal mill, but directly enters the powder classifi...

Embodiment 45

[0103] The cement corrosion resistance test of the present invention selects the cement of cement embodiment 30 to do the corrosion resistance test, and the test results are shown in Table 10-A and Table 10-B. All test blocks are put into the solution after 7 days of standard maintenance, and the implementation standard: cement sulfate corrosion resistance Quick test method GB / T2420 / 1981; three corrosion resistance coefficients of sodium sulfate, sodium carbonate, and sodium chloride with a concentration of 3%: 1.46, 1.41, and 1.51 respectively; three kinds of cements in 3% magnesium sulfate and 3% magnesium chloride solutions The corrosion resistance coefficients in are all greater than or equal to 1.0, and the corrosion resistance coefficient is extremely high.

[0104] Table 10-A

[0105]

[0106] Table 10-B

[0107]

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Abstract

The invention relates to a white fast-setting, fast-hardening and high-belite sulphoaluminate cement clinker, and also relates to an application and a production technology thereof. The mineral component of the cement clinker comprises 0.5-4.6% of f-CaO; the chemical component of the cement clinker comprises 12.9-16.1wt% of SiO2, 12-19wt% of Al2O3, 0.15-1.0wt% of Fe2O3, 49-53wt% of CaO and 12-18.5wt% of SO3; and the clinker rate range Cm is 1.01-1.137, and P is 0.62-1.44. The clinker is produced through calcining 30-50wt% of limestone, 26-46wt% of slag powder and 21.1-40wt% of desulfurized gypsum in a rotary kiln at 1250-1350DEG C. 26-97% Of the clinker, 3-19% of anhydrite and 0-55% of the slag powder, or 5-25% of the clinker, 14.4-19.0% of the anhydrite and 55.8-79% of the slag powder are mixed and ground to form white fast-setting, fast-hardening and high-belite sulphoaluminate cement and high-late strength and high-belite sulphoaluminate cement.

Description

technical field [0001] The invention belongs to the field of building materials and relates to the improvement of the industrial production technology of fast-setting rapid-hardening high belite sulfoaluminate cement. Specifically, it is a new variety of white fast-setting rapid-hardening high belite sulfoaluminate cement clinker, its application and its production process. Background technique [0002] At present, the application demand for white cement in the field of building materials has been greatly improved in terms of consumption and technical level. The production of white cement requires high raw material standards, complex processes, high energy consumption, and serious pollution discharge. There are fewer and fewer high-quality raw materials suitable for production, and the prices are getting higher and higher. Create a contradiction between supply and demand. [0003] The mineral composition and production process of traditional white Portland cement are simi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/32C04B7/14
CPCY02P40/10
Inventor 张振秋
Owner TANGSHAN POLAR BEAR BUILDING MATERIAL
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