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Cement grinding aid and preparation method thereof

A technology of cement grinding aid and eggshell powder, which is applied in the field of cement production and processing, can solve the problem that waste cannot be sorted, and achieve the effect of highlighting substantive characteristics

Pending Publication Date: 2019-06-04
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And some waste cannot be sorted, such as poultry egg shells from kitchen waste, waste oil recovered from range hoods, and wine from meals, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A cement grinding aid according to Example 1 of the present invention, the cement grinding aid comprises the following raw materials in parts by weight: 47 parts of eggshell powder, 2.5 parts of water; The undersize of 0.85mm sieve.

[0025] The preferred version of above-mentioned technical scheme is:

[0026] The above-mentioned eggshell powder is egg shell powder;

[0027] The above-mentioned cement grinding aid is prepared by the following method:

[0028] ①. After grinding the discarded poultry eggshells, pass through a 0.85mm sieve, and take the under-sieve;

[0029] ②. Moisten the fine powder with water and stir evenly;

[0030] ③. Put the eggshell powder carrier after stirring evenly and the cement main material composed of cement clinker, desulfurized gypsum and fly ash into the mill for grinding.

[0031] The above-mentioned cement grinding aid is special in that it is used as an admixture to improve grinding efficiency in the cement production process. T...

Embodiment 2

[0034] A cement grinding aid according to Example 2 of the present invention, the cement grinding aid comprises the following raw materials in parts by weight: 45 parts of eggshell powder, 5 parts of water; The undersize of 0.85mm sieve.

[0035] The preferred version of above-mentioned technical scheme is:

[0036] The above-mentioned eggshell powder is a mixture of duck eggshells and goose eggshells;

[0037] The above-mentioned cement grinding aid is prepared by the following method:

[0038]①. After grinding the discarded poultry eggshells, pass through a 0.85mm sieve, and take the under-sieve;

[0039] ②. Moisten the fine powder with water and stir evenly;

[0040] ③. Put the eggshell powder carrier after stirring evenly and the cement main material composed of cement clinker, desulfurized gypsum and fly ash into the mill for grinding.

[0041] The above-mentioned cement grinding aid is special in that it is used as an admixture to improve grinding efficiency in the c...

Embodiment 3

[0044] A cement grinding aid according to Example 3 of the present invention, the cement grinding aid comprises the following raw materials in parts by weight: 25 parts of eggshell powder, 5 parts of water; The undersize of 0.85mm sieve.

[0045] The preferred version of above-mentioned technical scheme is:

[0046] The cement grinding aid also contains the following raw materials in parts by weight: 3 parts of triethanolamine, 1.5 parts of calcium chloride, 10 parts of waste oil recovered from range hoods, and 10 parts of wine.

[0047] The above-mentioned eggshell powder is a mixture of eggshells and quail eggs;

[0048] The above-mentioned cement grinding aid is prepared by the following method:

[0049] ①. After grinding the discarded poultry eggshells, pass through a 0.85mm sieve, and take the under-sieve;

[0050] ②. Mix the wine and eggshell powder into a paste, and dry it in the sun for 3 days to solidify;

[0051] ③. Dissolve calcium chloride in water, add trietha...

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Abstract

The invention discloses a cement grinding aid for improving grinding efficiency in a cement production process and a preparation method thereof, and relates to the technical field of cement productionand processing. The technical scheme of the invention is: a cement grinding aid is characterized in that the cement grinding aid comprises the following raw materials (by weight): 25-47 parts of eggshell powder and 2.5-5 parts of water; wherein the eggshell powder is a undersize of a 0.85 mm sieve after grinding of the discarded eggshell. Compared with the prior art, the invention has the following outstanding substantive features and significant progress: the cement grinding aid is green and environmentally-friendly, is prepared by using eggshell powder as the main raw material, can replaceexisting cement grinding aids, and can remarkably improved the technical performance index of the cement for upgrading.

Description

technical field [0001] The invention relates to the technical field of cement production and processing, in particular to a cement grinding aid for improving grinding efficiency in the cement production process and a preparation method thereof. Background technique [0002] During the grinding process of cement, more and more unsaturated valence bonds and structural units with positive and negative charges will be formed on the surface of the micro-particles, making the particles in a metastable high-energy state. The surface energy of the particles also increases rapidly, and the groups of micro-particles form agglomerates that are difficult to disperse again under the relatively large mutual gravitational force, and the re-agglomeration of particles increases the difficulty of ultra-fine grinding. After the grinding aid is added, under the condition of maintaining the original quality standard, the output of the cement mill can be increased by 10%-30%, and the electricity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/00C04B24/12C04B103/52
Inventor 王波张晓慧高旭
Owner YANTAI UNIV
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