Compound cement grinding agent and method for applying same

Abstract

The invention belongs to cement auxiliaries, and particularly relates to a compound cement grinding agent and a method for applying the same. The compound cement grinding agent comprises, by weight, 5-20 parts of polycarboxylate, 1-9 parts of reinforcing agents, 1-10 parts of fatty alcohol polyoxyethylene ether sulfate, 0.1-1 part of urea and 14-45 parts of water. The compound cement grinding agent and the method have the advantages that the grinding agent is used in cement processing procedures, accordingly, cement particle diameter adjusting effects can be realized, the strength of cement can be improved, and energy consumption can be reduced in cement production procedures.

Description

technical field [0001] The invention belongs to cement additives, in particular to a composite cement grinding aid, and also relates to its use method. Background technique [0002] The grinding of cement is accomplished by the mutual collision, extrusion and friction of the grinding bodies in the ball mill. When the cement particles are refined, on the one hand, the surface energy of the finely ground cement particles is relatively large, and there is a tendency for the fine particles to automatically agglomerate; on the other hand, if the qualified fine powder cannot be unloaded from the mill in time, it will cause paste balls and forging. Thereby the internal impact of the ball mill is reduced, the grinding energy is consumed, and the grinding efficiency of the ball mill is seriously affected. [0003] The particle size of cement particles is 3~32 μm Contributes greatly to the strength of cement, and the particle size of cement particles is 3~32 μm The more, the greate...

AI Technical Summary

Problems solved by technology

[0004] At present, the main components of commercial grinding aids are amine organic substances, polyol organic substances and inorganic salts. This kind of liquid grinding aid compounded by various small molecular substances has many disadvantages when used, and the grinding aid ability has an upper limit. , it is easy to have a wide distribution range of cement product particles, and the product is coarse, resulting in a decrease in cement strength and even affecting the cement strength grade

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