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Grinding aid for composite portland cement with high limestone content and preparation method thereof

A technology of compound silicate and limestone, applied in the field of cement production and processing, can solve the problems of high energy consumption and high pollution, and achieve the effect of stable application performance and good grinding aid effect.

Active Publication Date: 2017-11-03
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high energy consumption and high pollution faced by the development of my country's cement industry and the current research status of special grinding aids for large-volume limestone cement, the present invention proposes a special grinding aid for high-limestone-volume composite Portland cement and its preparation Method, the main raw materials are alcohol amine, polyol, molasses, sodium thiosulfate, anionic surfactant, sodium trimethylene phosphate and sodium ethylenediamine tetramethylene phosphate

Method used

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  • Grinding aid for composite portland cement with high limestone content and preparation method thereof
  • Grinding aid for composite portland cement with high limestone content and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] The composition and mass ratio of a special grinding aid for composite portland cement with high limestone content are: glycerin 2%, triisopropanolamine 6%, molasses 15%, sodium thiosulfate 5%, hexametaphosphoric acid Sodium 2.5%, sodium aminotrimethylene phosphate 15%, sodium ethylenediamine tetramethylene phosphate 12%, and the balance is water.

Embodiment 2

[0021] The composition and mass ratio of a special grinding aid for composite portland cement with high limestone content are: glycerin 5%, diethylene propylene monoethanolamine 5%, molasses 10%, sodium hexametaphosphate 1.5%, thiosulfuric acid Sodium 8%, sodium acetate 15%, sodium trimethylene phosphate 10%, sodium ethylenediamine tetramethylene phosphate 8%, and the balance is water.

Embodiment 3

[0023] The composition and mass ratio of a special grinding aid for composite Portland cement with high limestone content are: 5% diethylene propylene monoethanolamine, 5% diethylene glycol, 20% molasses, 8% sodium thiosulfate, 3% sodium hexametaphosphate, 10% sodium lauryl sulfate, 8% sodium aminotrimethylene phosphate, 5% sodium ethylenediamine tetramethylene phosphate, and the rest of water.

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Abstract

The invention relates to a grinding aid for composite silicate cement with high limestone doping amount and a preparation method thereof. The grinding aid comprises the following components in percentage by mass: 2-5% of alcohol amine, 3-8% of polyol, 10-20% of molasses, 5-10% of sodium thiosulfate, 1-4% of sodium hexametaphosphate, 10-15% of anionic surfactant, 8-15% of sodium amino trimethylene phosphate, 5-12% of ethylene diamine tetra (methylene phosphonic acid) sodium and the balance of water. The doping amount of the grinding aid product in the cement is 0.15-0.35%; and when the grinding aid is applied to the composite silicate cement with high limestone doping amount, the cement quality can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of cement production and processing, and relates to an external grinding aid for cement production, in particular to a grinding aid for composite portland cement with high limestone content and a preparation method thereof. technical background [0002] With the continuous acceleration of the pace of construction in our country, the output of cement has ranked first in the world for many years. However, in the process of cement production, a large amount of energy is consumed and a large amount of waste is discharged, which are also key issues restricting the development of my country's cement industry. In response to this problem, the use of admixtures and cement grinding aids in the cement production process is an effective control method for energy saving, consumption reduction, and improvement of cement performance without increasing investment in fixed assets and operating costs. [0003] At present, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B22/14C04B22/16C04B24/02C04B24/12C04B24/16C04B103/52
CPCC04B40/0039C04B2103/52C04B24/02C04B24/122C04B24/38C04B22/14C04B22/16C04B24/121C04B24/04C04B24/161
Inventor 陶绪泉王怀生崔慧马文文陈汪洋
Owner LIAOCHENG UNIV