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Composite cement grinding aid

A cement grinding aid and composite technology, applied in the field of cement additives, can solve the problems of sensitivity to seepage changes, poor cement compatibility, poor performance stability, etc., achieve excellent performance, improve blooming phenomenon, and low cost 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

[0014] The composite cement grinding aid is made of the following materials in parts by weight: 10 parts of polymerized polyols, 30 parts of lignin-based alcohol amines, 5 parts of calcium formate, 4 parts of p-aminobenzenesulfonic acid, solid phosphoric acid di 2 parts of magnesium hydrogen, 1 part of gelatin, and 2 parts of sucrose; the particle diameter of the solid magnesium dihydrogen phosphate is 50nm.

Embodiment 2

[0016] The composite cement grinding aid is made of the following materials in parts by weight: 15 parts of polymerized polyols, 32 parts of lignin-based alcohol amines, 8 parts of calcium formate, 6 parts of p-aminobenzenesulfonic acid, solid phosphoric acid di 4 parts of magnesium hydrogen, 2 parts of gelatin, and 3 parts of sucrose; the particle diameter of the solid magnesium dihydrogen phosphate is 60nm.

Embodiment 3

[0018] The composite cement grinding aid is made of the following materials in parts by weight: 20 parts of polymerized polyols, 35 parts of lignin-based alcohol amines, 10 parts of calcium formate, 8 parts of p-aminobenzenesulfonic acid, solid phosphoric acid di 6 parts of magnesium hydrogen, 3 parts of gelatin, and 5 parts of sucrose; the particle diameter of the solid magnesium dihydrogen phosphate is 70nm.

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Abstract

The invention discloses a composite cement grinding aid belonging to the technical field of cement aids. The composite cement grinding aid is prepared from the following substances in parts by weight: 10-25 parts of polymer polyols, 30-40 parts of lignin-based alkylol amine, 5-15 parts of calcium formate, 4-10 parts of p-aminobenzene sulfonic acid, 2-7 parts of solid magnesium dihydrogen phosphate, 1-4 parts of gelatin and 2-6 parts of sucrose, wherein the particle size of the solid magnesium dihydrogen phosphate is 50-80nm. By using the composite cement grinding aid, high-fineness grinding and superfine grinding can be favorably realized, the yield of a mill can be favorably increased, and the yield of a ball mill is increased by 28%; the grinding energy consumption can be favorably reduced, the utilization rate of clinker can be favorably increased, and the cost is reduced; the hydration reaction of clinker powder in cement can be basically finished within 25 days, and the strength effect can be completely taken; and the production of specific cement can be favorably improved, and energy conservation and emission reduction in the cement industry can be favorably realized.

Description

technical field [0001] The invention belongs to the technical field of cement additives, in particular to a composite 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): C04B24/24C04B22/16C04B103/52
Inventor 李琪
Owner 湖州华仑助剂科技有限公司
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