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Composite cement grinding aid

A cement grinding aid and composite technology, applied in the field of cement manufacturing, can solve problems such as inability to mix cement raw materials and effective grinding aid ingredients together, failure to achieve the best effect of cement grinding aid, chloride ion or alkali hazards, etc. Achieve the effect of stable raw material source, simple manufacturing, and improved distribution and shape

Active Publication Date: 2015-09-23
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

[0002] Cement is one of the most commonly used building materials and is widely used in civil engineering, hydraulic, national defense and other projects. During the processing of cement, it needs to be ground into powder with a mill. According to the existing cement grinding process, the mill Over-grinding often occurs in the warehouse, resulting in electrostatic adsorption and encapsulation. In order to solve this problem, grinding aids are usually added during the cement grinding process. The existing grinding aids have the following problems: high cost, low It is very easy to cause dust to fly and deteriorate the production environment, and the grinding aid effect is not obvious, thus affecting the performance of cement. The existing cement grinding aids have different components and relatively single functions, which only solve a certain problem in cement production. Problems in the aspect of cement raw materials and effective grinding aids cannot be combined together, so that the best effect of cement grinding aids cannot be achieved, and the chloride ion or alkali in the existing cement grinding aids brings certain harm

Method used

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  • Composite cement grinding aid

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Add 5 kg of sodium metasilicate pentahydrate into 28 kg of water and stir until completely dissolved, heat to a temperature of 25°C, then add 4.5 kg of sodium hexametaphosphate to the solution of sodium metasilicate pentahydrate, and continue heating to a temperature of 45°C , stirring and dissolving, finally adding 18 kg of polyol amines, 9 kg of polyols, and 12 kg of molasses into the solution and stirring until completely dissolved, then cooling and filtering. Among them, the polyol amine is composed of 10.8 kg of triethanolamine and 7.2 kg of triisopropanolamine, and the polyol is composed of 2.57 kg of glycerol, 2.57 kg of trimethylolethane, and 3.86 kg of pentaerythritol.

Embodiment 2

[0025] Add 8 kg of sodium metasilicate pentahydrate to 40 kg of water and stir until completely dissolved, heat to a temperature of 25°C, then add 4 kg of sodium hexametaphosphate to the solution of sodium metasilicate pentahydrate, and continue heating to a temperature of 45°C , stirring and dissolving, finally adding 5 kg of polyol amines, 15 kg of polyols, and 5 kg of molasses into the solution and stirring until completely dissolved, then cooling and filtering. Wherein, the polyol amine is composed of 2.5 kg of triethanolamine and 2.5 kg of triisopropanolamine, and the polyol is composed of 2.5 kg of glycerol, 5 kg of trimethylolethane, and 7.5 kg of pentaerythritol.

Embodiment 3

[0027] Add 4 kg of sodium metasilicate pentahydrate into 25 kg of water and stir until completely dissolved, heat to a temperature of 25°C, then add 6 kg of sodium hexametaphosphate to the solution of sodium metasilicate pentahydrate, and continue heating to a temperature of 45°C , stirring and dissolving, finally adding 35 kilograms of polyol amines, 3 kilograms of polyols, and 15 kilograms of molasses into the solution and stirring until completely dissolved, then cooling and filtering. Among them, the polyol amine is composed of 23.3 kg of triethanolamine and 11.7 kg of triisopropanolamine, and the polyol is composed of 1.125 kg of glycerol, 0.75 kg of trimethylolethane, and 1.125 kg of pentaerythritol.

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Abstract

The invention discloses a composite cement grinding aid, which consists of the following components in parts by weight: 5 to 35 parts of polyalcohol amine, 3 to 15 parts of polyalcohol, 5 to 15 parts of molasses, 4 to 8 parts of sodium metasilicate pentahydrate, 4 to 6 parts of sodium hexametaphosphate and 25 to 40 parts of water. The composite cement grinding aid has stable material sources, is environment-friendly and low in toxicity, and is easy to produce and manufacture; by determining respective components and content ranges, respective components can achieve a better synergistic effect, so the effectiveness of the grinding process can be optimized, and the distribution and morphology of individual cement particles can be improved; the composite cement grinding aid does not have adverse influence on cement quality, has the advantage of effectively increasing output and cement quality, and can also play the role of saving electricity, increasing grinding efficiency and cement strength, reducing free calcium oxide in cement and increasing the early strength and later strength of the cement.

Description

technical field [0001] The invention belongs to the technical field of cement manufacture, and in particular relates to a composite cement grinding aid. Background technique [0002] Cement is one of the most commonly used building materials and is widely used in civil engineering, hydraulic, national defense and other projects. During the processing of cement, it needs to be ground into powder with a mill. According to the existing cement grinding process, the mill Over-grinding often occurs in the warehouse, resulting in electrostatic adsorption and encapsulation. In order to solve this problem, grinding aids are usually added during the cement grinding process. The existing grinding aids have the following problems: high cost, low It is very easy to cause dust to fly and deteriorate the production environment, and the grinding aid effect is not obvious, thus affecting the performance of cement. The existing cement grinding aids have different components and relatively sin...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B24/12C04B22/16C04B103/52
Inventor 李琪
Owner 湖州华仑助剂科技有限公司
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