Environment-friendly cement grinding aid and preparation method thereof

A cement grinding aid, an environmentally friendly technology, applied in the field of cement grinding aids, can solve the problems of non-environmental protection and green production, and achieve the effects of high early strength, improved cement strength, and strong adaptability

Active Publication Date: 2021-01-05
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 fractions 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 oxid...

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 fractions 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, add ...

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, sodium phosphate 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 fractions 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, ...

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PUM

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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 preparation process of the existing cement grinding aid does not accord with environment-friendly green production. The environment-friendly cement grinding aid comprise the following components in partsby weight: 20-40 parts of wheat straw alkali lignin, 1-4 parts of an oxidizing agent, 1-4 parts of a polar additive, 8-16 parts of polyglycerol fatty ester, 6-12 parts of polyglycerol, 6-12 parts ofglycerin-like compound, 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 and 15-40 parts of water; whereinthe oxidizing agent is one or a combination of more of ammonium persulfate, potassium permanganate, hydrogen peroxide and sodium hypochlorite; and the polar additive is one or a combination of more of polyvinyl alcohol, sodium carboxymethyl cellulose, phenylaminomethyl triethoxysilane, lactic acid, sodium gluconate and sodium gluconate.

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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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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