Composite steel slag grinding aid

Abstract

The invention relates to a composite steel slag grinding aid, which solves the problems that grinding aid in prior art is not suitable for grinding steel slag, the grinding time is long, the grinding efficiency is low, the activity of early period in active utilization of steel slag is low, and content of particles not participating reaction is high. The technical scheme comprises the components by weight percentage as follows: 15-30% of surfactant, 20-40% of grinding aid, 20-40% of adjustor, and 5-25% of carrier. The grinding aid provided by the invention can effectively shorten the grindingtime, improve the grinding characteristics and improve effective content of hydrated particles so as to improve the hydrating activity of steel slag. Ground steel slag has high strength, large comparison surface, and small doping amount to further improve the doping amount of steel slag recycled.

Description

technical field [0001] The invention relates to a grinding aid, in particular to a composite steel slag grinding aid. Background technique [0002] The existing commonly used grinding aids are mostly aimed at the cement production process, and the grinding aids commonly used in cement are mainly divided into three categories: polymeric inorganic salts, polymeric organic salts and composite compounds. Exist in liquid, solid and gaseous forms. Liquid grinding aids include amines, alcohols, some inorganic salts and water; gas grinding aids include water vapor, acetone gas and inert gas, etc.; solid grinding aids include colloidal carbon black, calcium stearate, inorganic salts Potassium ferrocyanide, stearic acid, etc. [0003] The mineral components in steel slag are completely different from those in cement. That is, the inert component in steel slag is a solid solution with high iron content, and the active component is similar to cement active substances. Therefore, the ...

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Problems solved by technology

[0003] The mineral components in steel slag are completely different from those in cement. That is, the inert component in steel slag is a solid solution with high iron content, and the active component is similar to cement active substances. Therefore, the use of existing cement grinding aids not only has the problems of long grinding time, low powder efficiency, low activity in the early stage of steel slag activity utilization, and large content of non-reactive particles. The finished steel slag still has the problems of low strength, small specific surface area, and less steel slag parameters when it is reused, which cannot achieve the purpose of improving the grinding characteristics of steel slag and increasing the activity of steel slag.

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