A kind of multiple copolymer cement grinding aid and preparation method thereof

A technology of cement grinding aids and multi-component copolymers, which is applied in the fields of multi-component copolymer cement grinding aids and preparation, cement grinding aids and preparations, and can solve the problem that cannot fully meet the diversified and high-level needs of the market, and the enhancement effect is limited , pollute the environment and other issues, to achieve the effect of promoting the use of industrialization, improving the effect of grinding aid, and reducing electrostatic adsorption

Active Publication Date: 2016-06-08
ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditionally used grinding aids are mostly ethylene glycol, triethanolamine or their compounds, which have problems such as limited strengthening effect, narrow adaptability, poor stability, and environmental pollution, and cannot fully meet the needs of market diversification and high levels. need

Method used

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  • A kind of multiple copolymer cement grinding aid and preparation method thereof
  • A kind of multiple copolymer cement grinding aid and preparation method thereof
  • A kind of multiple copolymer cement grinding aid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 10 parts of maleic anhydride and 9.5 parts of glycerol into the reactor, stir and raise the temperature to 110°C, react for 2 hours, and then add 190 parts of methallyl alcohol polyoxyethylene ether (average molecular weight 2400) and 34 isopropanol. Add 0.4 parts of ferrous ammonium sulfate and 66 parts of water into the reactor, stir and raise the temperature to 80°C, add 6 parts of sodium propylene sulfonate, 6 parts of acrylamide, 10 parts of acrylic acid, and 30 parts of water into a certain container to dissolve called acrylic acid , A mixed solution of acrylamide and sodium allyl sulfonate. The mixed solution of acrylic acid, acrylamide, sodium allyl sulfonate and hydrogen peroxide were respectively added dropwise to the reactor, the reaction temperature was maintained, and the dropping rate was controlled. The dripping was completed in 3 hours, and the temperature was maintained for another 1 hour. Add 8 parts of triisopropanolamine and 7 parts of sodium hydr...

Embodiment 2

[0032] Add 10 parts of maleic anhydride and 9.5 parts of glycerol into the reactor, stir and raise the temperature to 110°C, react for 2 hours, and then add 190 parts of methallyl alcohol polyoxyethylene ether (average molecular weight 2400) and 34 isopropanol. Add 0.4 parts of ferrous ammonium sulfate and 66 parts of water into the reactor, stir and raise the temperature to 80℃, add 6 parts of sodium propylene sulfonate, 8 parts of acrylamide, 8 parts of acrylic acid, and 30 parts of water into a certain container to dissolve called acrylic acid , A mixed solution of acrylamide and sodium allyl sulfonate. The mixed solution of acrylic acid, acrylamide, sodium allyl sulfonate and hydrogen peroxide were respectively added dropwise to the reactor, the reaction temperature was maintained, and the dropping rate was controlled. The dripping was completed in 3 hours, and the temperature was maintained for another 1 hour. Add 8 parts of triisopropanolamine and 7 parts of sodium hydrox...

Embodiment 3

[0036] Add 10 parts of maleic anhydride and 9.5 parts of glycerol into the reactor, stir and raise the temperature to 110°C, react for 2 hours, and then add 190 parts of methallyl alcohol polyoxyethylene ether (average molecular weight 2400) and 34 isopropanol. Add 0.4 parts of ferrous ammonium sulfate and 66 parts of water into the reactor, stir and heat up to 80°C, add 6 parts of sodium propylene sulfonate, 10 parts of acrylamide, 6 parts of acrylic acid, and 30 parts of water into a certain container to dissolve called acrylic acid , A mixed solution of acrylamide and sodium allyl sulfonate. The mixed solution of acrylic acid, acrylamide, sodium allyl sulfonate and hydrogen peroxide were respectively added dropwise to the reactor, the reaction temperature was maintained, and the dropping rate was controlled. The dripping was completed in 3 hours, and the temperature was maintained for another 1 hour. Add 8 parts of triisopropanolamine and 7 parts of sodium hydroxide to the r...

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Abstract

The invention discloses a multipolymer cement grinding agent and a preparation method, and belongs to the technical field of cement grinding agents. The cement grinding agent is prepared through the following steps: mono-esterification is performed on maleic anhydride and glycerin, then the maleic anhydride and the glycerin copolymerize with TPEG, crylic acid, sodium allylsulfonate and acrylamide under the effect of the molecular chain transfer agent isopropanol by using hydrogen peroxide and ammonium ferrous sulfate as initiators, the polymerization product is neutralized until the pH is 7.5 by using triisopropanolamine and sodium hydroxide respectively, the solid content of the product is ensured to be 57-63%, and the molecular weight of the product is 5,000-10,000. The multipolymer cement grinding agent is low in cost and good in stability, the grinding effect and cement quality are improved obviously, waste gas, waste water and waste residue are not discharged during the synthetic process, and the multipolymer cement grinding agent has a good market prospect and economic benefits.

Description

Technical field [0001] The invention relates to a cement grinding aid and a preparation method, in particular to a multi-element copolymer cement grinding aid and a preparation method, and belongs to the technical field of cement production process additives. Background technique [0002] In the cement production process, grinding is a high energy-consuming link. In the grinding process, the cement particles agglomerate with the refinement of cement particles, so the energy conversion in the cement grinding process is low. In order to improve cement grinding efficiency, reduce energy consumption, increase the surface area of ​​cement particles, and improve cement quality, the method of adding cement grinding aids is used in the cement production process. Cement grinding aids, also known as cement grinding process additives, are additives that are added during cement grinding to aid in grinding without damaging the properties of the cement. The addition amount should not exceed 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/16C04B103/52
Inventor 张彦河刘振法张利辉李晓辉牛庾鑫
Owner ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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