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Method for preparing light heat-insulating fire resistant brick

A technology of lightweight heat insulation and refractory bricks, which is applied in the field of refractory materials, can solve the problems of long drying time and excessive cutting and grinding residue, and achieve the effect of improving heat preservation effect, high use temperature and good heat preservation and heat insulation performance

Active Publication Date: 2008-04-02
WUHAN WINNING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the drying time is long, and there are many cutting and grinding residues;

Method used

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  • Method for preparing light heat-insulating fire resistant brick
  • Method for preparing light heat-insulating fire resistant brick

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Experimental program
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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] A method for preparing corundum-mullite lightweight heat-insulating refractory bricks, the specific implementation of which is as follows:

[0021] Mix 55-80wt% corundum mullite, 5-20wt% raw clay, 1.5-3wt% polystyrene balls and 5-15wt% wood chips, rice husks, and coke powder in any weight percentage and add water For kneading, the weight of water added is 15-22% of the weight of the above-mentioned mixture.

[0022] Put the mixed material after kneading into the mold 2 placed on the pallet 3 as shown in Figure 1, and then put down the pressurizing device 1 to pressurize. The pressure of the pressurizing device is 0.01 ~ 0.018Mpa. Start the vibrating device 4 under the supporting plate 3 to vibrate, pressurize and vibrate for 0.1-2 minutes, and there is always a constant pressure during the vibrating process. Then lift the mold 2, remove the supporting plate 3,...

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Abstract

The related manufacture method for light insulating refractory brick comprises: mixing 40~70wt% chamotte or 45~75wt% bauxite chamotte or 50~80wt% corundum mullite, 5~30wt% raw clay, 0.5~3wt% polystyrene ball and 5~20wt% organic ablative material as well as 15~25wt% water; putting former mixture into mould 2, compressing with a compression device 1 and vibrating with a vibrating device 4 both with 0.1~3min; taking out for natural dry. This invention has well thermal shock resistance with low coat.

Description

1. Technical field [0001] The invention belongs to the technical field of refractory materials. In particular, it relates to a preparation method of lightweight heat-insulating refractory bricks. 2. Background technology [0002] Lightweight heat-insulating refractory bricks are composed of solid phase and gas phase, and the gas forms isolated pores in the solid bricks. Therefore, the thermal conductivity of lightweight heat-insulating refractory bricks is low, and it plays a role of heat insulation in thermal kilns. effect. The preparation method of heat-insulating refractory bricks directly affects the gas phase distribution and determines the performance of heat-insulating refractory bricks. [0003] At present, the methods of producing lightweight refractory bricks at home and abroad include: [0004] 1. Pouring method. The pouring method is to inject the configured mud into the model and dry it to make adobe. However, due to the large amount of water added, the str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66B28B1/093B28B3/02
Inventor 刘少明刘忠江何重新李鹤苏伯平
Owner WUHAN WINNING TECH