Views: 4 Author: su Publish Time: 2018-12-13 Origin: Site
Diethanolisopropanolamine (DEIPA) is a low toxicity, environmentally friendly alcohol amine fine chemical product, mainly used as a surfactant. More applications in cement additives. There are no three wastes in the production process, and green environmental protection is well known.
The cement industry is a high-energy-consuming industry. In the cement grinding process, 95% of the energy disappears as heat. When the fineness of the cement increases, the efficiency of cement selection decreases due to the aggregation of fine particles, resulting in a sharp drop in grinding efficiency. One way to improve this situation is to add a cement grinding aid to the mill during the grinding process to add certain grinding aids, such as diethanol monoisopropanolamine and triisopropanolamine, etc. Improve cement production. The application of cement grinding aid has great practical significance for energy saving and emission reduction in China. On the one hand, the use of cement grinding aid can increase cement production capacity, reduce loss and reduce grinding power consumption. On the other hand, due to cement grinding The agent has a reinforcing effect, which can reduce the amount of cement clinker and reduce the coal consumption of clinker production.
In the field of cement grinding aids, the use of alcohol amines is also very extensive. Since most of the alcohol amines are highly polar, and the aqueous solution is alkaline, it can mix the metal ions in the cement to interact with the minerals. Usually, it is compounded with a polyol, which can significantly increase the powder of the cement clinker. Grinding efficiency can also improve the performance of cement. Grinding aids containing diethanol monoisopropanolamine accelerate the hydration process of the cement and make the cement setting time slightly shorter. The grinding aid containing TIPA delays the setting time, retards the initial stage of hydration, and improves the performance of the slurry. The grinding aid with two components improves the compressive strength of the cement. The effect of the grinding aid of isopropanolamine (TIPA) is obvious, and the compressive strength is improved.
Diethanol monoisopropanolamine (DEIPA) can improve the unconfined compressive strength of cement soil before, during and after, and is an excellent cement concrete admixture. When the cement content is 18%, with the increase of DEIPA content, the effect of DEIPA on the strength of cement soil increases first and then decreases. The optimum blending amount of DEIPA is 0.04%. Adding a suitable admixture to the cement soil can improve the mechanical properties of the cement soil, reduce the amount of cement, shorten the construction period, and reduce the engineering cost.