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A compound cement grinding aid

A cement grinding aid and composite technology, which is applied in the field of cement manufacturing, can solve the problems that cement raw materials cannot be combined with effective grinding aid ingredients, the best effect of cement grinding aid cannot be achieved, and the grinding aid effect is not obvious. Achieve the effect of stable raw material source, simple manufacturing, and improved distribution and shape

Active Publication Date: 2018-01-12
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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  • A compound 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 is composed of the following components in parts by weight: 5-35 parts of polyol amine, 3-15 parts of polyol, 5-15 parts of molasses, and sodium metasilicate pentahydrate 4‑8 parts, 4‑6 parts of sodium hexametaphosphate, 25‑40 parts of water. The invention has stable sources of raw materials, environmental protection, low toxicity, and simple production. Through the determination of each component and its content range, it can ensure that each component achieves a better synergistic effect, thereby optimizing the performance of the grinding process and improving the cement split. Particle distribution and morphology have no adverse effects on cement quality, and have the advantages of better production increase and cement quality improvement. They can also save power consumption, improve powder efficiency and cement strength, reduce free calcium oxide in cement, and improve cement quality. Early strength, late strength.

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