Composite cement grinding aid

Abstract

The invention discloses a composite cement grinding aid, which is characterized by being prepared from the following components in percentage by weight: 5-15 percent of triethanolamine, 20-30 percent of diisopropanolamine, 15-20 percent of polymeric alkylol amine, 5-10 percent of sodium polyphosphate, 10-20 percent of lignosulfonate, 5-10 percent of syrup and the balance of water. By adopting the composite cement grinding aid, the grinding assisting effect of the conventional grinding aid is kept, the fluidity and dispersity of a material in a grinder can be enhanced remarkably, the bonding property of the material is reduced, the graduation of particles in the grinder is changed, the activity of the material is excited, the grinding efficiency is increased by 3-8 percent, the using amount of cement clinker is reduced by 4-10 percent, the hourly output of a cement grinding table is increased by 8-15 percent, the tensile strength of cement is enhanced by 4.1-5MPa within three days, the tensile strength of cement is enhanced by 6.7-7.9MPa within two days, the adaptability of an additive is enhanced, the cement production cost is reduced effectively, and a good energy-saving effect is achieved.

Description

technical field [0001] The invention belongs to the field of cement additives, in particular to a composite cement grinding aid. Background technique [0002] my country is a big cement production country in the world, and the research and development of cement grinding aids is developing rapidly. In cement production, grinding is an important link and necessary process in the cement production process, and its energy consumption and electricity consumption account for the total energy consumption of cement production. 30% and more than 70% of the total power consumption, about 97% of the energy consumed in the grinding process is turned into heat energy and wasted, and only a small part of the energy is used to increase the specific surface area of ​​the material. Energy saving and consumption reduction is an urgent task for cement production enterprises at present, and compared with other ways of energy saving and emission reduction in the cement production process, using c...

AI Technical Summary

Problems solved by technology

However, the liquid cement grinding aids in the prior art are compounded with pure chemical components such as triethanolamine or industrial waste, and their performance is relatively single. The efficiency is low, the enhancement effect is not obvious, and it cannot save more costs for cement enterprises

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