Modified cement grinding aid

A cement grinding aid and modification technology, which is applied in the field of cement additives, can solve problems such as poor performance stability, poor cement compatibility, and sensitivity to seepage changes, and achieve low cost, excellent performance, and good reinforcement effect Effect

Inactive Publication Date: 2015-08-19
湖州华仑助剂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing grinding aids have problems such as poor performance stability, sensitivity to changes in seepage, and poor compatibility of cement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The modified cement grinding aid is made of the following materials in parts by weight: 20 parts of polymerized polyol, 10 parts of lignin-based alcohol amine, 2 parts of sodium fatty acid, 5 parts of polytetrafluoroethylene powder, solid phosphoric acid di 1 part of aluminum hydrogen, 1 part of gelatin, 2 parts of sucrose; the particle diameter of the solid aluminum dihydrogen phosphate is 50nm.

Embodiment 2

[0018] The modified cement grinding aid is made of the following materials in parts by weight: 22 parts of polymerized polyols, 15 parts of lignin-based alcohol amines, 4 parts of sodium fatty acid, 6 parts of polytetrafluoroethylene powder, solid phosphoric acid di 2 parts of aluminum hydrogen, 2 parts of gelatin, 3 parts of sucrose; the particle diameter of the solid aluminum dihydrogen phosphate is 60nm.

Embodiment 3

[0020] The modified cement grinding aid is made of the following materials in parts by weight: 25 parts of polymerized polyol, 25 parts of lignin-based alcohol amine, 8 parts of sodium fatty acid, 8 parts of polytetrafluoroethylene powder, solid phosphoric acid di 4 parts of aluminum hydrogen, 3 parts of gelatin, 4 parts of sucrose; the particle diameter of the solid aluminum dihydrogen phosphate is 70nm.

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Abstract

The invention relates to a modified cement grinding aid, belonging to the technical field of cement assistants. The modified cement grinding aid is prepared from the following substances in parts by weight: 20-30 parts of polymerized polyalcohol, 10-30 parts of lignin-based alkylol amine, 2-10 parts of sodium soap, 5-10 parts of polytetrafluoroethylene powder, 1-5 parts of solid aluminum dihydrogen phosphate, 1-4 parts of gelatin and 2-6 parts of sucrose. The particle size of the solid aluminum dihydrogen phosphate is 50-80nm. The modified cement grinding aid is beneficial to highly fine milling and superfine grinding, is beneficial to enhancing the yield of the grinder, and enhances the yield of the ball grinder by 25%. The modified cement grinding aid is beneficial to lowering the grinding energy consumption, enhancing the clinker utilization ratio and saving the cost. The clinker powder in the cement can basically complete the hydration reaction within 20 days, thereby completely displaying the strength action. The modified cement grinding aid is beneficial to improving the production of special cement, and is beneficial to energy saving and emission reduction in cement industry.

Description

technical field [0001] The invention belongs to the technical field of cement additives, in particular to a modified cement grinding aid. Background technique [0002] Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It 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 ball formation during the grinding process, and can reduce the tendency of re-agglomeration of ultrafine particles formed during the grinding process. Cement grinding aids can also significantly improve the fluidity of cement, improve the grinding effect of the mill and the powder selection efficiency of the powder separator, thereby reducing the energy consumption of grinding. Cement produced with grinding aids has a lower tendency to compact and agglomerate, which facilitates cement handling and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B103/52
Inventor 李琪
Owner 湖州华仑助剂科技有限公司
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