A kind of environment-friendly cement grinding aid and preparation method thereof

A cement grinding aid and environment-friendly technology, applied in the field of cement grinding aids, can solve problems such as non-conformity with environmental protection and green production, and achieve the effects of high early strength, strong adsorption and dispersion ability, and improved strength

Active Publication Date: 2022-05-03
江苏润天建材(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of environment-friendly cement grinding aid and preparation method, to solve the problem that the preparation process of cement grinding aid proposed in the above-mentioned background technology does not conform to the problem of environmental protection and green production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An environment-friendly cement grinding aid and its preparation method. The following parts are taken: 20 parts of wheatgrass alkali lignin, 1 part of oxidant, 1 part of polar additive, 1 part of polyglycerol fatty ester, 6 parts of polyglycerol, glycerol-like 6 parts, 1 part polyether polyhydroxy tertiary amine, 5 parts ethylene glycol, 2 parts propylene glycol, 1 part sodium hydroxide, 15 parts water.

[0025] Further, the oxidizing agent is ammonium persulfate.

[0026] Further, the polar additives are polyvinyl alcohol, sodium carboxymethylcellulose and anilinomethyltriethoxysilane.

[0027] The preparation method of environment-friendly cement grinding aid comprises the following steps:

[0028] Step 1: Dividing wheatgrass alkali lignin into different molecular weight distributions by means of ultrafiltration purification;

[0029] Step 2: Add the wheatgrass lignin with an extracted molecular weight between 200-300 to the reactor, and when heated to 50°C, add an ...

Embodiment 2

[0038] An environment-friendly cement grinding aid and its preparation method, the following parts are taken: 25 parts of wheatgrass alkali lignin, 2 parts of oxidizing agent, 2 parts of polar additive, 10 parts of polyglycerol fatty ester, 8 parts of polyglycerol, glycerol-like 8 parts, polyether polyhydroxy tertiary amine 2 parts, ethylene glycol 7 parts, propylene glycol 3 parts, sodium hydroxide 3 parts, water 20 parts.

[0039] Further, the oxidizing agent is ammonium persulfate.

[0040] Further, the polar additives are polyvinyl alcohol, sodium carboxymethylcellulose and anilaminomethyl triethoxy.

[0041] The preparation method of environment-friendly cement grinding aid comprises the following steps:

[0042] Step 1: Dividing wheatgrass alkali lignin into different molecular weight distributions by means of ultrafiltration purification;

[0043] Step 2: Add wheatgrass lignin with an extracted molecular weight between 200-300 to the reactor, and when heated to 50°C, ...

Embodiment 3

[0052] An environment-friendly cement grinding aid and its preparation method. The following parts are taken: 30 parts of wheatgrass alkali lignin, 3 parts of oxidizing agent, 3 parts of polar additive, 12 parts of polyglycerol fatty ester, 10 parts of polyglycerol, glycerol-like 10 parts, polyether polyhydroxy tertiary amine 4 parts, ethylene glycol 10 parts, propylene glycol 6 parts, sodium hydroxide 4 parts, water 35 parts.

[0053] Further, the oxidizing agent is perhydrogen peroxide and sodium hypochlorite.

[0054] Further, the polar additives are lactic acid and sodium gluconate.

[0055] The preparation method of environment-friendly cement grinding aid comprises the following steps:

[0056] Step 1: Dividing wheatgrass alkali lignin into different molecular weight distributions by means of ultrafiltration purification;

[0057] Step 2: Add the wheatgrass lignin with an extracted molecular weight between 200-300 to the reactor, and when heated to 50°C, add an oxidant...

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Abstract

The invention discloses an environment-friendly cement grinding aid and a preparation method thereof, relates to the technical field of cement grinding aids, and aims to solve the problem that the existing cement grinding aid preparation process does not conform to environmental protection and green production. The described ingredients are 20-40 parts of wheatgrass alkali lignin, 1-4 parts of oxidizing agent, 1-4 parts of polar additive, 8-16 parts of polyglycerol fatty ester, 6-12 parts of polyglycerol, 6-12 parts of glycerol-like 1-5 parts of polyether polyhydroxy tertiary amine, 5-15 parts of ethylene glycol, 2-8 parts of propylene glycol, 1-5 parts of sodium hydroxide, 15-40 parts of water; wherein the oxidizing agent is ammonium persulfate, permanganese Potassium chloride, hydrogen peroxide, sodium hypochlorite or a combination of several; polar additives are polyvinyl alcohol, sodium carboxymethylcellulose, anilinomethyltriethoxysilane, lactic acid, sodium chlorate and sodium gluconate one or a combination of several.

Description

technical field [0001] The invention relates to the technical field of cement grinding aids, in particular to an environment-friendly cement grinding aid and a preparation method thereof. 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. Common cement grinding aids include liquid and powder, which can significantly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C04B24/32C04B24/24C04B103/52
CPCC04B40/0046C04B24/24C04B2103/52C04B24/2623C04B24/383C04B24/42C04B24/32C04B24/02C04B22/062C04B24/06
Inventor 钱亚生
Owner 江苏润天建材(集团)有限公司
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