With the rapid development of China's cement industry, the pressure of energy saving and emission reduction is getting bigger and bigger, cement production enterprises will pay more and more attention to the application of grinding aids, and the application prospect of grinding aids will be very broad. The main raw material used by some foreign companies for grinding aids is de-sugar wood sulfonate.
The use of industrial by-products as cement grinding aids has a very broad application prospect. Some foreign scientists use natural bio-glycerol, a by-product of biodiesel manufacturing, to replace common cement grinding aids such as ethylene glycol and hydroxylamine for cement grinding process. Using cement from different regions of Belgium, Greece and Italy, it was found that this bio-glycerol blended with 5% NaCl was more effective than the high-purity grade glycerol. In addition, this bio-glycerol can significantly improve cement.
The use of triisopropanolamine in cement concrete
Triisopropanolamine was mainly used in the fields of petrochemical and daily chemical industry. It is also a new type of cement grinding aid raw material, which has the characteristics of improving the compressive strength of cement. The replacement of inorganic salt enhancers with harmless organic compounds is an urgent need in technology and industry, and a small number of applications have begun to appear in recent years.
Triethanolamine and triisopropanolamine on slag cement impact of hydration process
The slag cement has the advantages of low hydration heat, high late strength, inhibition of alkali aggregate reaction, and resistance to sulfate corrosion, and has been applied in a large number of projects. When producing slag cement, because the slag is more greasy than the clinker, the best active particle size can not be achieved when co-grinding, and the single grinding will cause a lot of energy consumption, so it is used in the grinding process. Grinding aids to reduce grinding energy consumption and improve cement performance. Triethanolamine (TEA) and Triisopropanolamine (TIPA) are the main components of common grinding aids.
Slag cement has the advantages of low heat of hydration, high strength in the late stage, inhibition of alkali aggregate reaction and sulfate resistance. It has been applied in a large number of projects.
In the produce process of slag cement, the slag is not easily grind than the clinker, If grinding two materil together can not reach their optimum active particle size, and separate grinding will cause a lot of energy consumption, so the grinding process used Grinding aids to reduce grinding energy consumption and improve cement performance.