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Cement grinding aid

A cement grinding aid, triethanolamine technology, applied in the field of cement grinding aids, can solve the problems of cement or concrete hazards and effect differences, and achieve the effect of eliminating ball paste grinding, eliminating electrostatic adsorption, and optimizing cement particle gradation

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the same product from different manufacturers is applied to different manufacturers, there are cases where the effect is quite different
Existing products cannot give full play to the product’s effect of improving the adhesion of grinding materials, and fail to combine various effective grinding aid ingredients together to achieve the best grinding effect. At the same time, chlorine or alkali in existing grinding aids will Hazardous to cement or concrete

Method used

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Embodiment 1

[0022] A cement grinding aid, its composition in parts by mass is as follows: 5 parts of modified triethanolamine, 10 parts of propylene glycol, 3 parts of unsaturated polyester resin, 6 parts of sodium thiosulfate, 2 parts of calcium formate, 0.6 part of Tween-80 , 6 parts of alkyl polyglycosides, 10 parts of maleic anhydride, 2 parts of nano silicon dioxide, 2.4 parts of sodium hexametaphosphate, 2 parts of allyl polyoxyethylene ether, 1.8 parts of water-retaining cellulose.

[0023] Wherein, the preparation method of modified triethanolamine is as follows:

[0024] (1) configure the acid mixed solution of sulfuric acid and phosphoric acid, the mol ratio of described sulfuric acid and phosphoric acid is 1:1.1;

[0025] (2) Heating the triethanolamine solution to 130-135°C, adding the acid mixed solution dropwise, the mass ratio of the triethanolamine to the acid mixed solution is 2:1;

[0026] (3) Maintain 130-135° C. and stir for 3 hours, then cool to room temperature to o...

Embodiment 2

[0029] A cement grinding aid, its composition in parts by mass is as follows: 8 parts of modified triethanolamine, 11 parts of propylene glycol, 3.5 parts of unsaturated polyester resin, 6.5 parts of sodium thiosulfate, 3 parts of calcium formate, 0.65 parts of Tween-80 , 6.5 parts of alkyl polyglycosides, 12 parts of maleic anhydride, 2.5 parts of nano silicon dioxide, 2.8 parts of sodium hexametaphosphate, 3 parts of allyl polyoxyethylene ether, and 2 parts of water-retaining cellulose.

[0030] Wherein, the preparation method of modified triethanolamine is as follows:

[0031] (1) configure the acid mixed solution of sulfuric acid and phosphoric acid, the mol ratio of described sulfuric acid and phosphoric acid is 1:1.2;

[0032] (2) Heating the triethanolamine solution to 130-135°C, adding the acid mixed solution dropwise, the mass ratio of the triethanolamine to the acid mixed solution is 2.1:1;

[0033] (3) Maintain 130-135° C. and stir for 3 hours, then cool to room te...

Embodiment 3

[0036] A cement grinding aid, its composition in parts by mass is as follows: 15 parts of modified triethanolamine, 12 parts of propylene glycol, 4 parts of unsaturated polyester resin, 9 parts of sodium thiosulfate, 5 parts of calcium formate, 0.7 part of Tween-80 , 9 parts of alkyl polyglycosides, 20 parts of maleic anhydride, 4 parts of nano silicon dioxide, 4 parts of sodium hexametaphosphate, 4 parts of allyl polyoxyethylene ether, 3.2 parts of water-retaining cellulose.

[0037] Wherein, the preparation method of modified triethanolamine is as follows:

[0038] (1) configure the acid mixed solution of sulfuric acid and phosphoric acid, the mol ratio of described sulfuric acid and phosphoric acid is 1:1.2;

[0039] (2) Heating the triethanolamine solution to 135-140°C, adding the acid mixed solution dropwise, the mass ratio of the triethanolamine to the acid mixed solution is 2.5:1;

[0040] (3) Maintain 135-140° C. and stir for 3 hours, then cool to room temperature to ...

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Abstract

The invention relates to the field of cement production, in particular to a cement grinding aid. The cement grinding aid is prepared from the following components in parts by mass: 5-25 parts of modified triethanolamine, 10-15 parts of propylene glycol, 3-5 parts of unsaturated polyester resins, 6-12 parts of sodium thiosulfate, 2-8 parts of calcium formate, 0.6-0.8 part of tween-80, 6-12 parts of alkylpolyglycoside, 10-30 parts of maleic anhydride, 2-6 parts of nanometer silicon dioxide, 2.4-5.6 parts of sodium hexametaphosphate, 2-6 parts of APEG and 1.8-4.8 parts of water retention cellulose. Under the condition that the situation of a mill is not changed, the yield range of the mill can be increased by 10-30%, besides, an over-milling phenomenon can be effectively reduced, and the size grading of cement particles can be optimized; and the dispersibility of materials in the mill can be improved, electrostatic adsorption of cement microfine particles can be effectively eliminated, and the phenomena that cement microfine particles are adsorbed mutually to form slices, and cement microfine particles are adhered to a grinding body and the like can be effectively avoided.

Description

technical field [0001] The invention relates to the field of cement production, in particular to a 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 reduces wall-hanging in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38
CPCC04B40/0039C04B2103/52C04B24/122C04B24/02C04B24/283C04B22/142C04B24/04C04B24/045C04B22/06C04B22/16C04B24/32C04B24/383
Inventor 汤海涛