Granulated blast furnace slag liquid composite grinding aid

Abstract

The invention relates to a granulated blast furnace slag liquid composite grinding aid and belongs to the technical field of granulated blast furnace slag grinding process admixtures. The granulated blast furnace slag liquid composite grinding aid is prepared from triethanolamine, mixed alcohol, propanetriol, molasses, potassium carbonate, sodium pyrophosphate, sodium sulfate and water; and the granulated blast furnace slag liquid composite grinding aid is formed by composition of the most common chemical raw materials and industrial wastes, and has the advantages of low toxicity, no volatilization, stable sources, sufficient sources and low cost. After the granulated blast furnace slag liquid composite grinding aid provided by the invention is added into a grinding machine, the distribution and appearance of slag powder particles can be improved, the adverse effects on quality of slag powder are avoided, the effects of saving power consumption and improving grinding efficiency can be realized, and the granulated blast furnace slag liquid composite grinding aid has the advantages of better increasing the yield and improving the quality of the slag powder. Under the situation of same grinding time, the specific surface area of the slag powder is effectively improved, the screening residues are reduced, and the activity indexes of the slag powder in the early stage (7d) and the late stage (28d) are significantly improved.

Description

technical field [0001] The invention relates to a liquid composite grinding aid for granulated blast furnace slag, which belongs to the technical field of admixtures for the grinding process of granulated blast furnace slag. Background technique [0002] Granulated blast furnace slag, referred to as slag for short, is the waste slag produced when iron and steel enterprises smelt pig iron. With the vigorous development of my country's iron and steel industry, tens of millions of tons of slag will be discharged every year. A large amount of slag piled up not only occupies land, but also causes environmental pollution. Therefore, how to utilize slag solid waste has been a subject that Chinese metallurgists have been studying for many years, and it is also a realistic problem that should be solved emphatically in developing circular economy and building a conservation-minded and environment-friendly society. For a long time, most of the slag has been used as cement admixture a...

AI Technical Summary

Problems solved by technology

Cement grinding aids are added in the cement grinding process to improve the fluidity of materials, reduce electrostatic adsorption, reduce the formation of agglomerates, improve cement technical indicators, and thus save energy consumption; while slag grinding aids It must not only improve the grinding efficiency, but also increase the early and late activity index of slag. CN102503232A can only improve the slag grinding efficiency, but has no effect on the increase of slag activity, and is not suitable for slag grinding production

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