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Research progress and development trend of cement grinding aids

Views:1     Author:su     Publish Time: 2018-11-01      Origin:Site Inquire

Research progress and development trend of cement grinding aids

The application of cement grinding aids has become more and more intensive with the development of the cement industry. Since domestic cement production accounts for more than 60% of the world's total output, and most of the production cement is taken locally, the research on cement grinding aids has been active, while abroad. Research is relatively mature, in relative。Stagnant state. The new multi-functional grinding aid has always been the development trend of grinding aids. As the price of cement declines, the use of grinding aids has become the focus of attention in the future. The modification of waste produced by other industries into cement grinding aid can not only reduce the difficulty of handling in other industries, but also reduce the production cost of grinding aids. At home and abroad, relevant aspects are explored. However, due to the complex composition of waste, the group Large fluctuations, which poses a challenge for the quality control of grinding aids. The promotion of organic polymer synthetic grinding aids makes full use of condensation, sulfonation, grafting, template synthesis, etc. in synthetic technology to achieve the purpose of polymer materials reaching the expected functional groups and molecular structures. Introduction to the use of domestic cement grinding aids After entering the 21st century, it has been rapidly popularized, but the utilization rate of developed countries in Europe and America has reached 90%. There is still a big gap between the above, especially with the decline of cement demand in construction projects, the development of cement grinding aids begins to receive price. And the dual constraints of production. However, with the gradual improvement of cement production resources and energy consumption standards in China, the new GB 16780-2012 "Energy consumption limit for cement unit products" requires that the comprehensive electricity consumption of cement production does not exceed 90 kWh/t, of which cement grinding power consumption accounts for about 60% of the total energy consumption, the use of cement grinding aids can reduce the power consumption of cement grinding and increase the amount of cement mixed materials. The promotion and use of grinding aids has become one of the important measures for the energy saving and emission reduction and environmental load of the cement industry, which is another opportunity for the development of the grinding aid industry. After more than 30 years of accumulation, the research and development of cement grinding aids has gradually got rid of the past by relying on high-chlorine inorganic salts in powders to improve water.The early compressive strength of the mud gradually changed from a one-component liquid chemical organic matter to a composite compound grinding aid. The decline in cement prices also requires the price of cement grinding aids to be reduced. Research on the use of industrial waste liquids in other industries as raw materials for cement grinding aids has become a new hot spot for the development of grinding aids. The composite grinding aid has a variety of organic compounds compounded to the polymer synthetic material. The development of the composite grinding aid requires the directional synthesis of the polymer material with specific functional groups, and the experimental research on the polymer synthetic grinding aid has been continued. In addition, it is also the direction of industry research to continue to improve the use of specific industrial waste grinding aids. The cement industry is advancing on the road of sustainable development towards green and low carbon, and the development of new non-toxic and non-polluting grinding aids is always around. At present, the most widely used chemical monomers for grinding aids are organic substances such as alcohols such as triethanolamine and diethylene glycol, and alcohols such as alcohol amines, although complex inorganic grinding aids composed of various inorganic substances are still used worldwide. In other industries, such as cement, but because of the advantages of small amount of chemical monomer grinding aid, convenient transportation, stable quality, etc., such grinding aids have always been the first choice for applications. However, chemical reagents are subject to fluctuations in the price of petroleum products. Influence, domestic and foreign are also looking for alternative chemical substances, especially some organic small molecule surfactants, and made some research progress. Simple organic matter grinding aid. The application of cement grinding aids has become more and more intensive with the development of the cement industry. Since domestic cement production accounts for more than 60% of the world's total output, and most of the production cement is taken locally, the research on cement grinding aids has been active, while abroad. The research is relatively mature and in a relatively stagnant state. New multi-functional grinding aids have always been the trend of grinding aids. As cement prices fall, improving the use of grinding aids has also become the focus of attention in the future. The modification of waste produced by other industries into cement grinding aid can not only reduce the difficulty of handling in other industries, but also reduce the production cost of grinding aids. At home and abroad, relevant aspects are explored. However, due to the complex composition of waste, the group Large fluctuations, which poses a challenge for the quality control of grinding aids.

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