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Cement grinding aid preparation method

A cement grinding aid, ethylene glycol technology, applied in the field of cement grinding aid preparation, can solve the problems of reducing cement output and quality, complex ingredients, agglomeration water demand, etc., to reduce energy consumption and cost, improve cement Quality, increase the effect of cement production

Inactive Publication Date: 2015-06-17
青岛昊河水泥制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing cement grinding aids have complex ingredients, high cost, and cumbersome processing, which increases the energy consumption and cost of cement production, reduces the output and quality of cement per unit time, and the existing cement grinding aids contain Chlorine and alkali ions, chloride ions remaining in clinker and cement will accelerate the corrosion of steel bars, alkali ions will cause rapid setting, caking and increased water demand of cement, and frost on the concrete surface

Method used

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  • Cement grinding aid preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment one: ethylene glycol, carboxymethyl cellulose, carboxymethyl starch, sodium hexametaphosphate, triethylenepropanolamine and water according to 9%, 3.5%, 1.7%, 0.8%, 1.8%, 83.2% The weight ratio is prepared, and then the above-mentioned raw materials are quantitatively pipetted into the reactor, heated to 32°C, stirred for 35 minutes, cooled to room temperature, and packaged. The physical properties of the cement grinding aid thus obtained are shown in the following table:

[0021]

Embodiment 2

[0022] Embodiment two: ethylene glycol, carboxymethyl cellulose, carboxymethyl starch, sodium hexametaphosphate, triethylenepropanolamine and water according to 10%, 4%, 2%, 1%, 2%, 81% The weight ratio is prepared, and then the above-mentioned raw materials are quantitatively pipetted into the reactor, heated to 33°C, stirred for 40 minutes, cooled to room temperature, and packaged. The physical properties of the cement grinding aid thus obtained are shown in the following table:

[0023]

Embodiment 3

[0024] Embodiment three: ethylene glycol, carboxymethyl cellulose, carboxymethyl starch, sodium hexametaphosphate, triethylenepropanolamine and water according to 11%, 3.8%, 1.9%, 1.2%, 2.1%, 80% The weight ratio is prepared, and then the above-mentioned raw materials are quantitatively pipetted into the reactor, heated to 35°C, stirred for 50 minutes, cooled to room temperature, and packaged. The physical properties of the cement grinding aid thus obtained are shown in the following table:

[0025]

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PUM

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Abstract

The present invention discloses a cement grinding aid preparation method, which comprises: (1) preparing raw materials, wherein 8-13% by weight of ethylene glycol, 3-5% by weight of carboxymethyl cellulose, 1.5-2.5% by weight of carboxymethyl starch, 0.7-1.4% by weight of sodium hexametaphosphate, 1.5-2.5% by weight of triisopropanolamine, and 75-85% by weight of water are matched; (2) heating and stirring the raw materials, wherein the raw materials are quantitatively transferred into a reactor, heated to a temperature of 30-35 DEG C, and stirred for 30-60 min; and (3) cooling the heated and stirred raw materials to a room temperature, discharging the material, and packaging to obtain the finished product. With the application of the method of the present invention to prepare the cement grinding aid, the cement production energy consumption and the cement production cost can be reduced, and the cement yield within the unit time and the cement quality can be increased. In addition, the cement grinding aid of the present invention is added to the cement mill during the cement grinding, such that the machine-hour of the cement mill can be increased by more than or equal to 15%, the strength of the produced cement is increased by more than or equal to 3 MPa over 3 days, and the strength of the produced cement is increased by more than or equal to 4 MPa over 28 days.

Description

technical field [0001] The invention belongs to the field of cement production, in particular to a preparation method of a cement grinding aid. Background technique [0002] Cement grinding aid is an additive that is added to the mill during the cement grinding process to help the grinding without damaging the performance of cement. The general dosage is less than 1%. It can change the dispersibility of materials inside the mill and the flow rate of cement, improve the conveying efficiency of cement, and effectively eliminate the phenomenon of electrostatic adsorption and ball paste grinding of cement fine particles, and can increase the output of the mill by about 20%. , while effectively reducing over-grinding, optimizing cement particle gradation, and reducing cement sieve residue. The composite grinding aid also contains an activator that stimulates the potential activity of cement admixtures such as fly ash and slag powder, so as to increase the strength of cement, inc...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B22/16C04B103/52
Inventor 王传波田斌邢正涛崔凯王风民
Owner 青岛昊河水泥制品有限责任公司