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Read More About Cement Grinding Aid

Views: 17     Author: Mary     Publish Time: 2018-01-30      Origin: Site Inquire

1. What is a cement grinding aid?

A grinding aid is a specialty chemical agent used to make it easier to grind and mix cement. Specifically, grinding aid prevent cement particles from re-agglomeration, or re-adhering, during and after the grinding process. Grinding aid make it possible to streamline the cement-making process by increasing process efficiency and material fluidity, it also contribute to lower energy costs on the part of industrial mills.

2.  Operating principle of a cement grinding aid?

The grinding aid began to gain popularity in the mid-20th century as a reliable tool for cement processing. It can reduce surface tension between cement particles brought on by the stress of the grinding process. Chemical compounds known for their polar properties, such as alkanolomines, disperse charges on the surface of the cement particle. This covering of charges prevents individual particles from clumping together.

Hydration is also an important factor in the grind aid process. When a grinding aid comes in contact with a cement particle, it forms an instant gel around the particle. This gel hydrates the grain and initially serves as a barrier from other cement particles. With time, the gel crystallizes. This crystallization allows the cement particle to attach itself to others, forming a fluid lattice structure.

3. Forms of a cement grinding aid? factory storage warehouse.png

Cement griding aid can come in the form of gas, liquid, or solid. Typically, mills will use one of the following additives in their cement mixtures: various types of alkanolomines, monoethylene glycols, diethylene glycols, sodium oleate, oleic acid, dodecylbenzene sulphonic acid sodium lignosulphonate, or sulphite waste liquor. These chemicals ensure that the integrity of the cement is kept intact while at the same time helping to pulverize the cement into manageable grains.

4. DEIPA compared with TIPA in cement grinding aid?

According to the research, DEIPA effects on cement properties is better than the ordinary cement grinding aids as TEA & TIPA, the cement compressive strength in all ages were improved when DEIPA was added to cements. The effect of DEIPA and TIPA were similar on cement properties including normal consistency, setting time, fineness and fluidity, etc. DEIPA is excellent cement grinding aid.

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