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Cement composition and preparation method thereof

A technology of cement composition and portland cement, which can be applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., and can solve the problems that the effect cannot be effectively utilized.

Inactive Publication Date: 2010-10-27
山西建和节能环保技术有限公司
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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 and preparation method thereof
  • Cement composition and preparation method thereof

Examples

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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% A-type admixture to the ground Portland cement clinker and gypsum respectively, add 0.03wt% B-type admixture to the ground power plant desulfurization gypsum and limestone respectively, and add 0.03wt% B-ty...

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 700m2 / 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 desulfurized gypsum and limestone of the power plant after grinding respectively, and add 0...

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 ​​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 ​​power plant desulfurization gypsum 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% of A-type admixture to the ground Portland cement clinker and gypsum respectively, add 0.01wt% of B-type admixture to the ground power plant desulfurization gypsum and limestone respectively, and add 0.01wt% of B-...

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Abstract

The invention relates to a cement composition and a preparation method thereof. The various raw materials for producing cement and semi-finished products have different grindability, the raw materials are introduced into the cement composition according to different dispersions, and the physical and chemical functions of the raw materials vary greatly. The cement composition and the preparation method of the invention can use limestone, slag and separated crude coal ash to the largest extent, so the production cost of the cement composition can be reduced and the comprehensive property of the cement composition can be improved. The cement composition comprises portland cement clinker, gypsum, desulfurized gypsum from power plants, the limestone, the slag, the separated crude coal ash, the bottom slag of boilers, the slag of fluidized bed furnaces and the like.

Description

technical field [0001] The invention relates to a cement composition and a preparation method thereof. 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 years, some enterprises have adopted the process of grinding the dried slag separately, but still grinding the clinker, gypsum, fly ash and other mixed materials together. When the degree of dispersion is hi...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B18/14C04B18/12C04B18/08
CPCC04B28/04Y02W30/91C04B14/28C04B18/08C04B18/141C04B22/143C04B22/145
Inventor 司国民万欢明赵艳琴刘冬民欧阳军
Owner 山西建和节能环保技术有限公司
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