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A coagulation-promoting enhanced cement grinding aid

A cement grinding aid and cement technology, applied in the field of cement admixtures, can solve the problems of less than half of the comprehensive utilization rate, restrict the application of industrial waste residue, prolong the cement setting time, etc. The effect of increased flexural strength

Active Publication Date: 2015-12-30
湖北统领新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country discharges a large amount of solid industrial waste (industrial waste) such as fly ash, slag, phosphorus slag, steel slag every year, but its comprehensive utilization rate is less than half
However, due to the large amount of industrial waste slag mixed in, it will affect the strength of cement, and the cement setting time will be prolonged after a large amount of industrial waste slag is mixed in. Due to the influence of these two aspects, the application of industrial waste slag in cement is restricted.

Method used

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  • A coagulation-promoting enhanced cement grinding aid
  • A coagulation-promoting enhanced cement grinding aid

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preparation example Construction

[0033] The present invention has no special limitation on the preparation method of the cement grinding aid, and the required cement grinding aid can be obtained after mixing the components described in the above technical solution. The present invention has no special limitation on the mixing method, and the mixing technical solution of the composition well known to those skilled in the art can be used.

[0034] The cement grinding aid provided by the invention is used in cement, which can increase the strength of cement and has a coagulation-promoting effect, thereby increasing the amount of industrial waste residue and reducing the amount of clinker, thereby increasing the setting speed of cement and shortening the time of cement grinding. The setting time of the cement is improved, and the mechanical strength of the obtained cement is improved.

[0035] The present invention provides the application of the cement grinding aid described in the above technical solution in ce...

Embodiment 1

[0040] The triethanolamine of 6 mass parts, the calcium formate of 3 mass parts, the polyacrylamide of 3 mass parts, the aluminum sulfate of 10 mass parts, the magnesium acetate of 3 mass parts, the layered sodium silicate of 5 mass parts and 70 mass parts The diatomite is mixed uniformly to obtain cement grinding aid.

[0041] The present invention tests the obtained cement grinding aid in a Ф500mm×500mm standard test mill, and the specific process is as follows:

[0042] Mix according to following material ratio: the clinker that mass fraction is 70%, the gypsum that mass fraction is 4.0%, the slag that mass fraction is 12% and the fly ash that mass fraction is 14%, obtain mixture;

[0043] The cement grinding aid obtained in this example, whose mass fraction is 0.4% of the total mass of the mixture, was added to the obtained mixture, mixed and ground for 30 minutes to obtain treated cement.

[0044] Test the strength of cement mortar according to the method recorded in GB / ...

Embodiment 2

[0046] 8 parts by mass of diethanol monoisopropanolamine, 6 parts by mass of calcium formate, 1 part by mass of polyacrylamide, 2 parts by mass of aluminum sulfate, 2 parts by mass of sodium metaaluminate, 6 parts by mass of calcined aluminum Alumina, 2 parts by mass of magnesium fluorosilicate, 10 parts by mass of layered sodium silicate, and 63 parts by mass of diatomaceous earth were uniformly mixed to obtain a cement grinding aid.

[0047] The present invention tests the obtained cement grinding aid in a Ф500mm×500mm standard test mill, and the specific process is as follows:

[0048] Mix according to following material ratio: the clinker that mass fraction is 70%, the gypsum that mass fraction is 4.0%, the slag that mass fraction is 12% and the fly ash that mass fraction is 14%, obtain mixture;

[0049] The coagulation-accelerating enhanced cement grinding aid obtained in this example was added to the obtained mixture with a mass fraction of 0.3% of the total mass of the ...

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Abstract

The invention provides a cement grinding aid comprising the following components: 10-20wt% of organic coagulating materials comprising alcohol amine materials, calcium formate and polyacrylamide, 12-25wt% of inorganic coagulating materials comprising aluminum-containing materials, magnesium-containing materials and layered sodium silicate, and the balance of kieselguhr. The cement grinding aid provided by the invention comprises the organic coagulating materials and the inorganic coagulating materials which interact with each other, so that the obtained cement grinding aid can shorten the cement setting time and improve the strength of cement. In addition, the cement grinding aid provided by the invention can also improve the yield of the cement and reduce the power consumption for grinding, and can reduce the consumption of clinker and improve the consumption of industrial waste slag under the condition that the strength of the cement and the hourly output of a grinding machine are basically not changed.

Description

technical field [0001] The invention relates to the technical field of cement admixtures, in particular to a coagulation-accelerating enhanced cement grinding aid. Background technique [0002] Cement is an indispensable building material in human life and social production. It is widely used and used in large quantities. It is known as "the grain of the construction industry". At present, there is no material at home and abroad that can replace it. Statistics show that the world's construction industry consumes 40% of the total resources and energy consumption. Due to the impact of waste gas, dust, waste water and noise, the cement industry is still a major contributor to environmental pollution. At the same time, with the increasing scale of industrial production, the industrial by-products are continuously produced and accumulated, and there are problems such as storage and processing and damage to the ecological environment. my country discharges a large amount of soli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B22/08C04B103/52
Inventor 冯恩娟仲宝树朱化雨傅秀新赵洪义
Owner 湖北统领新材料科技有限公司