Device for preparing cement water reducing agent by physical method

Abstract

The invention relates to a device for preparing a cement water reducing agent by a physical method. Flyash is taken as a raw material and moves in a friction charged pipeline to rub with the pipeline wall, coal particles in the flyash lose electrons and carry positive charge, decarburized coal ash obtains electrons with negative charge, most coal particles with the positive charge move to a negative high voltage electrode plate and most decarburized coal dust with negative charge moves to a positive high voltage electrode plate under the action of an electric field when passing through a highvoltage electrostatic separation cavity, and the flyash is separated into the coal particles, middlings (a mixture of the coal particles and the decarburized coal ash) and the decarburized coal ash for respective collection. The decarburized coal ash is the cement water reducing agent prepared by the device. The loss on ignition (LOI) of the water reducing agent is less than 5 percent and is higher than the requirement on first-grade products of China.

Description

technical field [0001] The invention relates to a device for preparing cement water reducing agent by physical method, especially a kind of device which uses metal pipe friction to charge fly ash particles, and then separates them in an electrostatic field, and then uses a cyclone to collect high-purity The decarbonized ash is the cement superplasticizer device. Background technique [0002] Cement concrete is the most used building material in the world, but cement concrete has the disadvantages of heavy weight, low strength and high brittleness. With the rapid development of the construction industry, newer and higher requirements are put forward for its performance. Adding admixtures to cement is an effective, simple and economical method to increase the strength of concrete and improve its various properties. [0003] The most commonly used and most used admixture is cement water reducer, currently the most used water reducer such as: modified lignin type water reducer...

AI Technical Summary

Problems solved by technology

This invention uses N-sulfonic acid to replace most of the expensive and industrially toxic melamine. Although the product cost is reduced, this chemical preparation method is complicated and cumbersome, and the production efficiency is low, which is not conducive to the resource reuse of fly ash.

[0012] The preparation methods of the above-mentioned several disclosed cement water reducers belong to the chemical preparation method, most of the materials required for the preparation are industrially toxic and cause great pollution to the environment; the preparation conditions are many and complicated, which is not conducive to mass production

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