Sagger brick and masonry fire clay for firing sliding bricks by buried carbon

A sliding brick and saggar technology is applied in the field of refractory materials, which can solve the problems of complex components and high production costs, and achieve the effects of improving service life, speeding up heat transfer and saving energy.

Active Publication Date: 2013-07-17
瑞泰马钢新材料科技有限公司 +2
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Problems solved by technology

However, the method has complex components and high production cost

Method used

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  • Sagger brick and masonry fire clay for firing sliding bricks by buried carbon
  • Sagger brick and masonry fire clay for firing sliding bricks by buried carbon
  • Sagger brick and masonry fire clay for firing sliding bricks by buried carbon

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Embodiment Construction

[0038] In order to further describe the present invention, a kind of sagger brick and fire clay for masonry of the present invention will be described in more detail in conjunction with the accompanying drawings and examples.

[0039] In order to ensure that the carbon-containing slides are fired in a reducing atmosphere, the method of embedding carbon in the sagger is used, which requires the sagger itself to have good sealing performance and fast heat conduction; at the same time, it should have high strength and structural stability under high temperature conditions. Good characteristics, after a lot of research, mainly choose two kinds of material combination: one is silicon carbide, which has the characteristics of good thermal conductivity, low thermal expansion coefficient, good high temperature strength, etc., but it is not stable enough in oxidizing atmosphere; the other is corundum (α -Al 2 o 3 ), corundum has excellent performance at room temperature and high tempe...

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Abstract

The present invention discloses a sagger brick and masonry fire clay for firing sliding bricks by buried carbon. The sagger brick for firing the sliding bricks by the buried carbon comprises, by weight percentage, 55-70 % of silicon carbide particles; 3-15 % of silicon carbide fine powder; 10-25 % of alpha-Al2O3 fine powder; and 5-15 % of additives which are the silicon-aluminum fine powder and micro powder. The masonry fire clay comprises, by weight percentage, 63-80 % of white corundum powder; 10-20 % of alpha-Al2O3 fine powder; 5-10 % of clay and 1-7 % of additives which are calcium-containing cement and silicon-containing fine powder with effects of promoting coagulation, reducing water and high temperature enhancing. The sagger brick and the masonry fire clay are simple in components, low in production cost, good in thermal conductivity, good in thermal shock resistance and good in high temperature strength. The masonry saggar can meet requirements of firing the sliding bricks by the buried carbon, sealed anti-oxidation, efficient heat transferring and structural stability, and also can significantly improve quality of the fired sliding bricks and qualified rate of anti-oxidation after firing.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to the material of a sagger used for charcoal-embedded firing of slide bricks in a shuttle kiln. Background technique [0002] At present, fired magnesia bricks are mostly used for the selection of sagger materials. Due to unreasonable selection of sagger materials, poor thermal shock stability and unreasonable structural design of saggers, it is easy to appear that the integrity of saggers is not stable during use, resulting in The service life does not increase (generally, it can only be used for 2-3 times), and it is often accompanied by cracking or even collapse of the sagger, which makes the skateboard brick oxidized and scrapped, and affects the stability of the quality of the fired skateboard; it is built with fired magnesia bricks The thick wall of the sagger makes heat transfer difficult and occupies the effective space in the kiln, thereby reducing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 王德军许承凤郁书中
Owner 瑞泰马钢新材料科技有限公司
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