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Method for preparing grinding aid for cement

A grinding aid and cement technology, which is applied in the field of cement grinding aid production and processing, can solve the problems of low cost and high cost of grinding aid, and achieve the effects of low cost, improved grinding aid performance, and high comprehensive benefits

Inactive Publication Date: 2018-06-05
池州市知识产权服务中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a kind of grinding aid preparation method for cement in order to overcome the above-mentioned alcohol amine cement grinding aid cost high defect problem, the present invention uses allyl polyoxyethylene ether, 2-acrylamide-2- Methylpropanesulfonic acid, deionized water, acrylic acid, and ammonium persulfate, triisopropanolamine, and NaOH aqueous solution are used as raw materials for the initiator, and a polymer with low cost, good performance, and high comprehensive benefits is synthesized through chemical modification. cement grinding aid

Method used

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  • Method for preparing grinding aid for cement
  • Method for preparing grinding aid for cement
  • Method for preparing grinding aid for cement

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preparation example Construction

[0025] combine figure 1 , a kind of grinding aid preparation method for cement, comprises the following steps:

[0026] S1. Select allyl polyoxyethylene ether, 2-acrylamide-2-methylpropanesulfonic acid, and deionized water, and mix allyl polyoxyethylene ether, 2-acrylamide-2-methylpropanesulfonic acid, Deionized water is added to the reactor, and the temperature of the reactor is controlled at 50-60°C; the molar ratio of allyl polyoxyethylene ether to 2-acrylamide-2-methylpropanesulfonic acid is 1:1;

[0027] S2, select acrylic acid and deionized water to make acrylic acid diluted to 60wt% solution;

[0028] S3, choose initiator, deionized water, make the solution that initiator is diluted into 5wt%; Initiator is ammonium persulfate;

[0029] S4. Add the acrylic acid solution prepared in step S2 into the reaction kettle, adjust the temperature at 70-80° C., and react for 3-5 hours;

[0030] S5, adding triisopropanolamine and the initiator solution prepared in step S3 to the...

Embodiment 1

[0033] A method for preparing a grinding aid for cement, comprising the following steps:

[0034] S1. Select allyl polyoxyethylene ether, 2-acrylamide-2-methylpropanesulfonic acid, and deionized water, mix 1mol allyl polyoxyethylene ether, 1mol 2-acrylamide-2-methylpropanesulfonic acid Add acid and 1L deionized water into the reactor, and control the temperature of the reactor at 50°C;

[0035] S2, choose 1.8mol acrylic acid, deionized water, make the solution that acrylic acid is diluted into 60wt%;

[0036] S3, choose 0.008mol initiator ammonium persulfate, deionized water, make the solution that initiator is diluted into 5wt%;

[0037] S4. Add the acrylic acid solution prepared in step S2 into the reaction kettle, adjust the temperature at 70° C., and react for 5 hours;

[0038] S5, add 0.18mol triisopropanolamine and the initiator ammonium persulfate solution prepared in step S3 to the reactor, keep the temperature at 60°C, and react for 4 hours;

[0039] S6. After the ...

Embodiment 2

[0041] A method for preparing a grinding aid for cement, comprising the following steps:

[0042] S1. Select allyl polyoxyethylene ether, 2-acrylamide-2-methylpropanesulfonic acid, and deionized water, mix 1mol allyl polyoxyethylene ether, 1mol 2-acrylamide-2-methylpropanesulfonic acid Acid and 1L deionized water were added to the reactor, and the temperature of the reactor was controlled at 60°C;

[0043] S2, choose 2.4mol acrylic acid, deionized water, make the solution that acrylic acid is diluted to 60wt%;

[0044] S3, choose 0.012mol initiator ammonium persulfate, deionized water, make the solution that initiator is diluted into 5wt%;

[0045] S4. Add the acrylic acid solution prepared in step S2 into the reaction kettle, adjust the temperature at 80° C., and react for 3 hours;

[0046] S5, add 0.24mol triisopropanolamine and the initiator ammonium persulfate solution prepared in step S3 to the reactor, keep the temperature at 70°C, and react for 2 hours;

[0047] S6. ...

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Abstract

The invention provides a method for preparing a grinding aid for cement and relates to the technical field of cement grinding aid production and processing. A macromolecule cement grinding aid is prepared from allyl polyethenoxy ether, 2-acrylamide-2-methallyl sulfonate, deionized water, acrylic acid, ammonium persulfate as an initiator, triisopropanolamine and a NaOH solution as raw materials through chemical modification synthesis. By adopting the method for preparing the grinding aid for cement, the prepared cement grinding aid is low in cost, good in property and high in comprehensive benefit, and has wide application prospects, and grinding aiding and reinforcement properties of the cement grinding aid upon cement clinkers and mixed materials are improved through chemical modification.

Description

technical field [0001] The invention relates to the technical field of production and processing of cement grinding aids, in particular to a preparation method for cement grinding aids. Background technique [0002] In the cement production process, the power consumption of the grinding process is large, and the energy utilization rate is low. On the premise of not changing the grinding process, adding cement grinding aids can save energy, reduce consumption, and reduce costs. Cement grinding aids play an important role in the cement industry. As cement grinding aids, they can effectively shorten the grinding time. , improving cement performance, energy saving and emission reduction, has become a recognized important cement additive. [0003] Cement grinding aid is a general term for adding chemicals to the system during the cement clinker grinding process. They are mainly composed of some surfactants. During the grinding process of materials, cement grinding aids are adso...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/58C08F220/06C04B24/16C04B103/52
CPCC04B24/165C04B2103/52C08F283/065C08F220/585
Inventor 魏柏银
Owner 池州市知识产权服务中心有限公司
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