Cement grinding aid strengthening agent

A grinding aid enhancer and cement technology, which is applied in the field of cement additives, can solve the problems of lack of market competitiveness of products, low cement clinker strength, and reduced output of the mill, so as to achieve significant grinding aid effect and high grinding capacity. Effect of improvement, strength improvement

Inactive Publication Date: 2009-04-01
淄博宜龙实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic cement has the following shortcomings: the strength of cement clinker is not high, the cost of cement raw materials is high, the quality of cement fluctuates greatly, and the product lacks market competitiveness; moreover, when grinding cement in a ball mill, it causes high energy consumption due to sticking balls and walls
[0003] The reinforcing additives of the existing cement in the prior art generally have a large amount of addition, which has the disadvantage of stagnant grinding during the cement grinding process, increases power consumption, and reduces the output of the mill per unit hour
Either the performance is single, or the cost is high, which is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The weight ratio is: alcohol amines: polyols: amides: initiator=100kg: 160kg: 50kg: 4kg.

[0022] Alcohol amines use commercially available monoethanolamine; polyols use commercially available ethylene glycol; amides use commercially available polyacrylamide; initiators use commercially available ammonium bicarbonate.

[0023] Weigh the proportioned alcohol amine and polyol, add to the reaction tank and mix well, control the reaction under acidic conditions, at 100-110°C; stir for 2-6 hours; add the proportioned amide and initiator, adjust the pH value to 7- 7.5, then stirred and reacted for 3 to 5 hours; finally neutralized with alkali to pH 8 to 10 to obtain a yellow-brown liquid product.

[0024] The quality index of the finished product is: yellow-brown liquid in appearance; specific gravity 1.020-1.080; pH value 8-10; freezing point 8-10°C; viscosity 2-6MPa·S.

[0025] Application of the cement grinding aid reinforcing agent of the present invention:

[0026] (1)...

Embodiment 2

[0030] The weight ratio is: alcohol amines:polyols:amides:initiator=100kg:120kg:10kg:1kg.

[0031] Alcohol amines use commercially available diethanolamine; polyols use commercially available diethylene glycol; amides use commercially available acrylamide; initiators use commercially available sodium bicarbonate.

[0032] All the other are with embodiment 1.

Embodiment 3

[0034] The weight ratio is: alcohol amines:polyols:amides:initiator=1kg:140kg:30kg:2kg.

[0035] Alcohol amines use commercially available dipropanolamine; polyols use commercially available glycerol; amides use commercially available polyamides; initiators use commercially available magnesium peroxide. All the other are with embodiment 1.

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Abstract

The invention relates to a cement grinding-aid intensifier. The weight percent is that alkylol amine: polyalcohol: amide: initiator is equal to 1:1.2-1.6:0.1-0.5:0.01-0.04. The alkylol amine and the polyalcohol are mixed in a reaction tank evenly, the reaction acidity is controlled under stirring at 100-110 DEG C; the reaction time is 2-6 hours; the alkylol amine and the initiator are added, the pH value is adjusted to 7-7.5, then stirring is carried out for reaction for 3-5 hours; alkali is used for neutralization, the pH value is 8-10, and the finished product is obtained. The cement grinding-aid intensifier has the advantages that static electricity produced during powder grinding can be eliminated, thus facilitating the materials not to bond each other and penetrate into the cracks of grains and improving powder grinding efficiency; catalysis is acted during cement hydration, the diffluent complexing ions are produced, and the intensity of the testing body is improved; separation of cement powder grains in super thin grinding powder milling is restrained, thus avoiding the phenomenon of sticky balls, wall built-up and static electricity absorption; powder grinding ability of millers is improved, the specific surface of the thin powder is increased, and early strength, fast coagulation and hydration are fast; product cost is lowered, effect for aiding grinding is outstanding, the working environment is improved, performance of cement is improved obviously, production process is simple, and the products can be stored for a long period.

Description

technical field [0001] The invention relates to the category of cement additives, in particular to a cement grinding aid enhancer. Background technique [0002] At present, domestic cement has the following shortcomings: the strength of cement clinker is not high, the cost of cement raw materials is high, the quality of cement fluctuates greatly, and the product lacks market competitiveness; moreover, when grinding cement in a ball mill, it causes high energy consumption due to sticking balls and walls . [0003] The reinforcing additives of the existing cement in the prior art generally have a large amount of addition, which has the disadvantage of grinding retardation during the cement grinding process, increases power consumption, and reduces the output of the mill per unit hour. Either the efficiency is single, or the cost is high, which is not ideal. Contents of the invention [0004] The purpose of the present invention is to develop a cement grinding aid enhancer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B7/52C04B24/02C04B103/52
CPCC04B24/2641C04B24/282C04B2103/52C04B24/287
Inventor 赵秀芝王宜亮司鹏谢丽丽唐利
Owner 淄博宜龙实业有限公司
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