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Method for preparing modified cement grinding aid

The technology of a cement grinding aid and a manufacturing method, which are applied in the field of building materials, can solve the problems of low lubricity, poor fluidity and high production cost of the cement grinding aid, and achieve the effects of excellent grinding aid performance, improved flow performance and low cost.

Inactive Publication Date: 2019-11-05
刘晓英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of existing cement grinding aids such as high production cost, low lubricity and poor fluidity of cement grinding aids, a manufacturing method of modified cement grinding aids is proposed, which has low dosage and good reinforcing effect, and can improve The performance and output of cement can make the performance of the grinding aid more excellent, and can significantly improve the lubricity of the cement. The production process is simple and the cost is low, and it is suitable for large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of manufacture method of modified cement grinding aid, comprises following operation steps:

[0016] (1) Prepare the components, which are made of the following raw materials in weight percentage: polyolamine 6%, glycerin 5%, ethylene glycol 3%, triethanolamine 3%, triisopropanolamine 15%, sorbitol 5%, Sodium thiocyanate 5%, the rest is water;

[0017] (2) Take water and sodium thiocyanate according to the raw material ratio of the cement grinding aid and add it to the reaction kettle, start stirring, add an appropriate amount of oleic acid during the stirring process, control the temperature to normal temperature, and stir for 10 minutes;

[0018] (3) Take alcohol amine compound, ethylene glycol and sorbitol according to the raw material proportion of described cement grinding aid, and put it into the reactor, start stirring, dissolving, add appropriate amount of aluminum chloride in the stirring process, control The temperature is normal temperature, stirring ...

Embodiment 2

[0021] A kind of manufacture method of modified cement grinding aid, comprises following operation steps:

[0022] (1) Prepare the components, which are made from the following raw materials in weight percentage: 10% polyolamine, 8% glycerin, 20% ethylene glycol, 10% triethanolamine, 20% triisopropanolamine, 20% sorbitol, Sodium thiocyanate 20%, the rest is water;

[0023] (2) Take water and sodium thiocyanate according to the raw material ratio of the cement grinding aid and add it to the reactor, start stirring, add an appropriate amount of oleic acid during the stirring process, control the temperature to normal temperature, and stir for 30 minutes;

[0024] (3) Take alcohol amine compound, ethylene glycol and sorbitol according to the raw material proportion of described cement grinding aid, and put it into the reactor, start stirring, dissolving, add appropriate amount of aluminum chloride in the stirring process, control The temperature is normal temperature, stirring f...

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Abstract

The invention discloses a method for preparing a modified cement grinding aid and belongs to the technical field of building materials. The modified cement grinding aid is prepared from the followingraw materials in percentage by weight: 6-10% of polymeric alkylol amine, 5-8% of glycerinum, 3-20% of ethylene glycol, 3-10% of triethanolamine, 15-20% of tri-isopropanolamine, 5-20% of sorbitol, 5-20% of sodium thiocyanate and the balance of water. The cement grinding aid is prepared through stirring, dissolving and standing. The preparation principle is clear, the method is scientific, comparedwith the prior art, the cement grinding aid is low in mixing amount, good in reinforcement effect and capable of improving properties of cement and increasing machine-hour yields, properties of the cement grinding aid can be excellent, the lubrication degree of the cement can be remarkably improved, the flowability of the cement can be improved, and the method is simple in production process, lowin cost and applicable to on-scale production.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a method for manufacturing a modified cement grinding aid. Background technique [0002] In the grinding process of cement clinker, adding a small amount of additional substances (liquid or solid substances) can significantly improve the grinding efficiency or reduce energy consumption without damaging the performance of cement. The chemical additives are commonly referred to as: Cement grinding aid. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B103/52
CPCC04B40/0039C04B2103/52C04B24/121C04B24/02C04B24/122C04B22/14C04B22/002
Inventor 刘晓英
Owner 刘晓英
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