Method for adjusting temperature curve of kiln system by utilizing temperature brick

A technology of system temperature and temperature, applied in the field of ceramic tile kilns, can solve the problems of unfavorable stability of the kiln system, short service life, easy breakage, etc., and achieve the effects of simple and practical adjustment means, improving water absorption rate and prolonging service life.

Active Publication Date: 2020-05-19
肇庆乐华陶瓷洁具有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the strength of this warm brick is high, it is easy to break during the cyclic firing process and has a short service life.
In addition, this kind of porcelain warm brick takes away less heat, which is not good for maintaining the overall stability of the kiln system

Method used

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  • Method for adjusting temperature curve of kiln system by utilizing temperature brick

Examples

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Comparison scheme
Effect test

preparation example Construction

[0057] Correspondingly, the present invention also discloses a preparation method for the above-mentioned heated brick, which includes:

[0058] (1) Mix 5-10 parts of roller bar waste, 10-25 parts of magnesia soil, 10-20 parts of bentonite, and 5-15 parts of potassium sodium sand to obtain the first mixture;

[0059] The particle size of roller bar waste and potassium sodium sand is relatively large (>3cm); magnesia soil and bentonite contain some larger soil and / or mud lumps; therefore, these components are firstly mixed and ball milled to promote crushing efficiency. ,

[0060] (2) Mix 1-5 parts of polished brick waste residue, 30-40 parts of fly ash, and 0.5-1.5 parts of binder to obtain a second mixture;

[0061] Polished brick waste slag is the waste slag produced during the polishing process of polished bricks, and its particle size is very small, below 200 mesh (74 μm); fly ash is a product of coal combustion, and its particle size is also small, generally 150 mesh (1...

Embodiment 1

[0082] Embodiment 1 with warm brick

[0083] The present embodiment provides a kind of warm brick that is used for porcelain brick kiln, and its formula is:

[0084] 7 parts of roller bar waste, 23 parts of magnesia soil, 17 parts of bentonite, 4 parts of polished brick waste residue, 36 parts of fly ash, 13 parts of potassium sodium sand; 1 part of sodium carboxymethyl cellulose;

[0085] Among them, the Al 2 o 3 The content is 58.6wt%; the content of MgO in magnesia soil is 23.2wt%, SiO 2 The content is 65.9wt%, Al 2 o 3 The content of Al in fly ash is 1.6wt%; 2 o 3 The CaO content is 31.7 wt%, and the CaO content is 12.4 wt%.

[0086] The preparation method is the same as in Example 2.

Embodiment 2

[0094] Example 2 Using warm bricks to adjust the temperature curve of the kiln system

[0095] This embodiment discloses a method for adjusting the temperature curve of the kiln system by using heated bricks, including:

[0096] (1) Soak the warm brick of Example 1 in water for 2 minutes and then pull it out and drain it;

[0097] (2) close the first valve and the second valve; the opening degree of the third valve is increased to 80%, and the opening degree of the fourth valve is increased to 90%;

[0098] (3) Put the drained heated bricks into the conveying device and send them into the firing kiln;

[0099] (4) After the warm brick enters the kiln for 8 minutes, increase the opening of the first valve to 40%, reduce the opening of the third valve to 15%, and increase the opening of the fifth valve to 70%.

[0100] (5) After entering the kiln with warm bricks for 40 minutes, increase the opening of the second valve to 40%; reduce the opening of the fourth valve to 25%.

...

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Abstract

The invention discloses a method for adjusting a temperature curve of a kiln system by utilizing a temperature brick. The method comprises the steps of soaking the temperature brick with the water absorption rate of 10-20% in water, putting the temperature brick into a calcining kiln for calcining, during calcining, extracting flue gas of a preheating section and an oxidation section of the calcining kiln through an exhaust fan to enter a front end of a drying kiln-a wet cool drying section, and extracting waste gas of a slow cooling section and a quenching section to enter a rear end of the drying kiln-a dry cold drying section. The flue gas in the preheating section and the oxidation section can have reasonable humidity through soaking, so that the probability of dry cracking is greatlyreduced. Meanwhile, by extracting waste gas, not only can the purpose of controlling the temperature curve of the calcining kiln be achieved, but also the comprehensive utilization of heat can be realized. In addition, the adjusting means required by the method is simple and practical, and the temperature curve of the kiln can be effectively maintained to be stable.

Description

technical field [0001] The invention relates to the technical field of ceramic brick kilns, in particular to a method for adjusting the temperature curve of a kiln system by using heated bricks. Background technique [0002] Most of the existing ceramic tile manufacturers use roller kilns for drying and firing, and the roller kilns are continuous production for 24 hours. In the continuous production process, in order to stabilize the quality of the product, the temperature, atmosphere and pressure of the kiln need to be kept stable. However, with the development of the ceramic tile industry, the decoration of tiles has become more and more diversified, so more and more production has been changed during the production process, and the phenomenon of empty kilns has also increased, that is, no bricks enter the kiln, resulting in empty kiln firing; The empty kiln will directly have a great impact on the temperature, atmosphere and pressure of the kiln. The direct harm is that ...

Claims

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Application Information

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IPC IPC(8): F27D1/04F27D7/04F27D17/00F27D19/00
CPCF27D1/04F27D7/04F27D17/004F27D19/00F27D2019/0003Y02P10/25
Inventor 谢岳荣霍振辉徐鹏飞陈世立
Owner 肇庆乐华陶瓷洁具有限公司
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