Alkali-activated high-titanium slag baking-free haycite and preparation method thereof

Abstract

The invention discloses alkali-activated high-titanium slag baking-free haycite which is characterized by being prepared by mixing 100 weight parts of high-titanium slag micro powder, 12.5 to 30 weight parts of an alkali-activator, 0.5 to 10 weight parts of a pore forming substance and 0 to 10 weight parts of water. A preparation method of the alkali-activated high-titanium slag baking-free haycite comprises the following steps: putting the high-titanium slag micro powder into a disk granulator for stirring, so as to form a uniformly dispersed powder body; adding the pore forming substance, the water and the alkali-activator solution in sequence, and performing stirring, granulation and forming to obtain a blank, wherein the alkali-activator solution is water glass; maintaining the blank under a natural environment condition for 28 days, so as to obtain the alkali-activated high-titanium slag baking-free haycite. By the adoption of the preparation method for preparing the alkali-activated high-titanium slag baking-free haycite, high-temperature baking is not needed; a large mixing amount of the high-titanium slag micro powder can be used, so that a product is light in mass and high in strength; the alkali-activated high-titanium slag baking-free haycite has the characteristics of simple process, low cost, energy conservation, low carbon, environment friendliness and the like.

Description

technical field [0001] The invention belongs to building materials and their preparation, and relates to an alkali-activated high-titanium slag unfired ceramsite and a preparation method thereof. The unfired ceramsite prepared by the invention is suitable for building materials. Background technique [0002] High-titanium slag is a kind of TiO produced by smelting pig iron with vanadium-titanium magnetite. 2 Industrial solid waste with a content of more than 15%, due to the TiO in its composition 2 Most of them exist in stable perovskite structure minerals, and the active calcium, silicon, and aluminum components are in the glass solid solution, resulting in a slow chemical reaction rate and reduced activity of the gelling active components. Applying high-titanium slag to the field of building materials is the most effective means to realize its large-scale comprehensive utilization. However, when high-titanium slag is used as admixture or mineral admixture, the product s...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of low activity of high-titanium slag, difficulty in direct utilization in cement concrete, complex sintered ceramsite process and high energy consumption in the prior art, and to provide an alkali-activated high-titanium slag non-burning ceramsite and its preparation method

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