Device for preparing cement water reducing agent by physical method

A physical method and technology of water reducing agent, which is applied in the field of decarbonized ash, that is, cement water reducing agent, can solve the problems of complex process, many preparation conditions and tediousness, so as to improve the preparation efficiency, reduce dust pollution, increase the The effect of selection

Inactive Publication Date: 2012-07-18
中国有色金属工业第十四冶金建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 met

Method used

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  • Device for preparing cement water reducing agent by physical method
  • Device for preparing cement water reducing agent by physical method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A device for preparing cement water reducing agent by physical method, including high-pressure airflow inlet 1, fly ash feeding hopper 2, friction charging pipeline 3, material distribution pipe 4, air inlet 5, high-voltage electrostatic separation Cavity 6, positive high-voltage electrode plate 7, negative high-voltage electrode plate 8, ore separation plate 9, product collection chamber 10, material collection pipe 11, coal particle cyclone 12, medium ore cyclone 13, cement superplasticizer cyclone Device 14, collection hopper 15, vacuum negative pressure chamber 16. The fly ash feeding hopper 2 is fixedly connected perpendicular to the friction charging pipeline 3, one end of the friction charging pipeline 3 is fixedly connected to the high-pressure airflow inlet 1, and the other end is fixedly connected to the distribution pipe 4, and the distribution pipe 4 is installed in a The geometric center line of the air inlet 5 communicates with the left and righ...

Embodiment 2

[0034] Embodiment 2: A device for preparing cement water-reducer by physical method, the composition structure is the same as that of Embodiment 1.

[0035] The length L of the triboelectrically charged pipeline 3 1 =3m; diameter D=5cm; thickness h 1 =3mm; made of aluminum.

[0036] The pole distance between the positive and negative plates of the high-voltage electrostatic separation chamber 6 is 20cm; the thickness of the electrode plates is h 2 =3mm; the length L of a single high-voltage electrostatic separation chamber 6 2 =60cm; width B=30cm; applied voltage U=30kv.

[0037] The laboratory temperature is 25° C. and the relative humidity RH=23.5%. The loss on ignition of the de-coal ash obtained was 2.15%, and the yield was 60.20%; the loss on ignition of coal particles was 27.45%, and the yield was 14.88%.

[0038] It can be seen from Examples 1 and 2 that with the increase of the compound electric field voltage, the separation effect of the compound friction electri...

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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...

Claims

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Application Information

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IPC IPC(8): C04B22/00C04B103/30
Inventor 宁升功廖启迅刘扶群杨朝晖陈蔚民
Owner 中国有色金属工业第十四冶金建设有限公司
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