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Cement composition

A kind of cement composition, Portland cement technology, applied in the direction of cement production, etc., can solve the problem that the effect can not be effectively used and the like

Active Publication Date: 2014-06-04
GUANGZHOU FORM BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing cement grinding process has the technical problem of over-grinding components that do not require a high degree of dispersion, and releasing components that require a higher degree of dispersion in advance and making their effects unable to be effectively utilized

Method used

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  • Cement composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Grind Portland cement clinker, gypsum, power plant desulfurization gypsum, limestone, slag, sorted coarse fly ash, boiler bottom slag and boiling slag, so that the specific surface area of ​​the above components is as follows: silicate The specific surface area of ​​cement clinker is 300m 2 / kg, the specific surface area of ​​gypsum is 750m 2 / kg, the specific surface area of ​​desulfurization gypsum in the power plant is 700m 2 / kg, the specific surface area of ​​limestone is 900m 2 / kg, the specific surface area of ​​slag is 470m 2 / kg, the specific surface area of ​​coarse fly ash after sorting is 650m 2 / kg, the specific surface area of ​​boiler bottom slag is 700m 2 / kg, the specific surface area of ​​the boiling slag is 700m 2 / kg;

[0034] 2) Add 0.03wt% type A admixture to the ground Portland cement clinker and gypsum respectively, add 0.03wt% type B admixture to the ground power plant desulfurization gypsum and limestone respectively, add 0.03wt% type B a...

Embodiment 2

[0039] Grind Portland cement clinker, gypsum, power plant desulfurization gypsum, limestone, slag, sorted coarse fly ash, boiler bottom slag and boiling slag, so that the specific surface area of ​​the above components is as follows: silicate The specific surface area of ​​cement clinker is 400m 2 / kg, the specific surface area of ​​gypsum is 700m 2 / kg, the specific surface area of ​​desulfurization gypsum in the power plant is 750m 2 / kg, the specific surface area of ​​limestone is 1000m 2 / kg, the specific surface area of ​​slag is 450m 2 / kg, the specific surface area of ​​coarse fly ash after sorting is 700m 2 / kg, the specific surface area of ​​boiler bottom slag is 600m 2 / kg, the specific surface area of ​​the boiling slag is 600m 2 / kg;

[0040] 2) Add 0.01wt% type A admixture to the ground Portland cement clinker and gypsum respectively, add 0.04wt% type B admixture to the ground power plant desulfurization gypsum and limestone respectively, and add 0.04wt% typ...

Embodiment 3

[0045] Grind Portland cement clinker, gypsum, power plant desulfurization gypsum, limestone, slag, sorted coarse fly ash, boiler bottom slag and boiling slag, so that the specific surface area of ​​each of the above components is as follows: silicate The specific surface area of ​​cement clinker is 350m 2 / kg, the specific surface area of ​​gypsum is 800m 2 / kg, the specific surface area of ​​desulfurization gypsum in the power plant is 800m 2 / kg, the specific surface area of ​​limestone is 800m 2 / kg, the specific surface area of ​​slag is 500m 2 / kg, the specific surface area of ​​coarse fly ash after sorting is 600m 2 / kg, the specific surface area of ​​boiler bottom slag is 650m 2 / kg, the specific surface area of ​​the boiling slag is 650m 2 / kg;

[0046] 2) Add 0.05wt% type A admixture to the ground Portland cement clinker and gypsum respectively, add 0.01wt% type B admixture to the ground power plant desulfurization gypsum and limestone respectively, and add 0.01...

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Abstract

The invention relates to a cement composition and its preparation method. The raw materials and semi-finished products for cement production are different in grindability, are introduced into the cement composition in terms of different dispersity, and also have significantly different physical and chemical effects. The cement composition and its preparation method provided by the invention can maximumly give play to limestone, slag, and sorted coarse fly ash, is in favor of lowering the production cost of the cement composition and improving the comprehensive performance of the cement composition. The cement composition comprises portland cement clinker, gypsum, power plant desulfurization gypsum, limestone, slag, sorted coarse fly ash, boiler bottom slag and fluidized bed furnace slag, etc..

Description

technical field [0001] The application date of the present invention is July 01, 2010, the application number is: 201010215079.1, and the divisional application of the invention patent application titled "a cement composition and its preparation method". The present invention relates to a cement composition. Background technique [0002] Traditionally, in order to simplify the production process, cement plants quantitatively measure and mix various raw materials and semi-finished products for cement production, and then enter the same grinding equipment without distinction to grind them to a specified degree of dispersion. For the quality control of this process, some companies use water sieves or negative pressure sieves to control the sieve allowance, some companies use specific surface area meters to control the specific surface area, and a few companies use laser particle size distribution meters to analyze the particle morphology of cement products. [0003] In recent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26
CPCY02P40/10
Inventor 不公告发明人
Owner GUANGZHOU FORM BUILDING MATERIAL CO LTD
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