Method of utilizing artificially synthesized microporous spinel to prepare magnesium aluminate spinel firebrick with low thermal conductivity
The invention discloses a method of utilizing artificially synthesized microporous spinel to prepare a magnesium aluminate spinel firebrick with low thermal conductivity, and belongs to the technical field of refractory materials. The method is characterized by comprising the following steps: grindi...
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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
14.07.2017
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a method of utilizing artificially synthesized microporous spinel to prepare a magnesium aluminate spinel firebrick with low thermal conductivity, and belongs to the technical field of refractory materials. The method is characterized by comprising the following steps: grinding a main raw material composed of industrial alumina and caustic calcined magnesite, water, and a foaming agent to obtain slurry; draining the slurry, extruding the slurry in vacuum, drying and sintering the slurry to obtain microporous spinel; dry-mixing dead burnt magnesite and microporous spinel according to a certain mass ratio, then adding water and a bonding agent to carry out wet-mixing; punching the mixture by a press machine to form a semi-finished brick blank, drying the brick blank in a drying kiln, and finally burning the brick blank in a tunnel kiln. Microporous spinel and dead burnt magnesite are mixed, moulded by a press machine, and finally burned to form a novel magnesium aluminate spinel firebric |
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Bibliography: | Application Number: CN20171178199 |