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Polymer grinding aid for cement and preparation method of grinding aid

A cement grinding aid and polymer technology are applied in the field of polymer cement grinding aid and its preparation to achieve the effects of increasing output, improving grinding aid efficiency, and being non-radioactive.

Inactive Publication Date: 2019-09-10
NANJING YONGNENG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Polymer grinding aid for cement and preparation method of grinding aid

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Embodiment 1

[0020] A kind of polymer cement grinding aid, its raw material is composed of: Tetrahydroxyethylethylenediamine 4%, dispersant 0.5%, crude glycerin 15%, sugar 3%, sodium thiosulfate 7%, polyvinyl alcohol 0.3% , tetrahydroxypropyl ethylenediamine 3%, the balance is water, the total amount is 100%;

[0021] The percentages are mass percentages, according to the formula ratio, tetrahydroxyethylethylenediamine, dispersant, crude glycerin, sugar, sodium thiosulfate, polyvinyl alcohol and tetrahydroxypropylethylenediamine are dissolved in water, mixed Uniform, that is, product 1.

Embodiment 2

[0023] A kind of polymer cement grinding aid, its raw material is composed of: Tetrahydroxyethylethylenediamine 9%, dispersant 0.8%, crude glycerin 27%, sugar 10%, sodium thiosulfate 15%, polyvinyl alcohol 0.5% , Tetrahydroxypropylethylenediamine 8%, the balance is water, the total amount is 100%;

[0024] The percentages are all mass percentages. According to the formula ratio, dissolve tetrahydroxyethylethylenediamine, dispersant, crude glycerin, sugar, sodium thiosulfate, polyvinyl alcohol and tetrahydroxypropylethylenediamine in water, and mix well , namely, product 2.

Embodiment 3

[0026] A kind of polymer cement grinding aid, its raw material is composed of: Tetrahydroxyethylethylenediamine 7%, dispersant 0.7%, crude glycerin 21%, sugar 6%, sodium thiosulfate 13%, polyvinyl alcohol 0.4% , tetrahydroxypropyl ethylenediamine 5%, the balance is water, the total amount is 100%;

[0027] The percentages are all mass percentages. According to the formula ratio, dissolve tetrahydroxyethylethylenediamine, dispersant, crude glycerin, sugar, sodium thiosulfate, polyvinyl alcohol and tetrahydroxypropylethylenediamine in water, and mix well , namely, product 3.

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Abstract

The invention discloses a polymer grinding aid for cement and a preparation method of the grinding aid. The grinding aid for the cement is prepared from the following raw materials, in percentages bymass: 4-9% of tetrahydroxyethyl ethylenediamine, 0.5-0.8% of a dispersing agent, 15-27% of crude glycerin, 3-10% of sugar, 7-15% of sodium thiosulfate, 0.3-0.5% of polyvinyl alcohol, 3-8% of tetrahydroxypropyl ethylenediamine, and the balance of water, wherein a sum is 100%. According to the grinding aid provided by the invention, the tetrahydroxyethyl ethylenediamine and the tetrahydroxypropyl ethylenediamine are used to replace triethanolamine and triisopropanolamine, the high-dispersion polycarboxylate and / or fatty alcohol polyoxyethylene ether dispersant is used, firstly cement particles can be highly dispersed, and through dispersion permeation, electrical charges carried by the cement particles are neutralized to reduce agglomeration; and the grinding aid has good chemical stability,does not contain halogen ions capable of corroding equipment, significantly improves grinding efficiency and early and late strength of the cement, and can significantly reduce energy consumption ofproduction of the cement by 20-30% in the presence of the tetrahydroxyethyl ethylenediamine and the tetrahydroxypropyl ethylenediamine.

Description

technical field [0001] The invention belongs to the technical field of cement production, in particular to a polymer cement grinding aid and a preparation method thereof. Background technique [0002] Cement grinding is the process link with the highest energy consumption in the cement production process. During the grinding process, it often causes problems such as a decrease in cement powder selection efficiency and a decrease in grinding efficiency. Cement grinding aid is a chemical additive to improve the grinding effect and performance of cement, which can significantly increase the output of cement table, the strength of cement of all ages, and improve its fluidity. Cement grinding aids can greatly reduce the phenomenon of electrostatic adsorption and encapsulation formed in the grinding process, and can reduce the re-agglomeration tendency of ultrafine particles formed in the grinding process. Cement grinding aids can also significantly improve the fluidity of cement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B24/26C04B103/52
CPCC04B40/0039C04B2103/52C04B24/122C04B2103/408C04B24/026C04B24/10C04B22/147C04B24/2623C04B22/002
Inventor 谢昊李晓静刘国华
Owner NANJING YONGNENG MATERIALS
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