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A method for preparing foamed ceramic thermal insulation board by using Yellow River sediment and red mud

A foamed ceramic, thermal insulation technology, which is applied in the fields of green building materials and building energy conservation, can solve the problems of not mentioned foamed ceramic thermal insulation boards, etc., and achieves reduction of bulk density and thermal conductivity, and good aging resistance. , the effect of reducing solid waste pollution

Active Publication Date: 2017-06-13
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of these documents and patents mention the method of matching red mud and Yellow River silt to produce foamed ceramic thermal insulation boards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a foamed ceramic thermal insulation board by using the Yellow River silt and red mud, it comprises the following steps:

[0028] 1) Raw material crushing: Red mud, Yellow River sediment, clay, high-temperature flux, and foaming agent are crushed separately (using a pair of roller crushers and ball mills), and passed through a 200-mesh sieve to obtain five kinds of powders for use; among them, clay It is kaolin; the high-temperature flux is talc; the foaming agent is carbon black;

[0029] 2) Mixing of raw materials: according to the percentage by weight of each raw material: 10% red mud, 30% yellow river sediment, 50% clay, 9.95% high-temperature flux, 0.05% foaming agent, weigh the materials, and mix them with a ball mill for 3 hours. Prepare the billet for use;

[0030] 3) Compression molding: Fill the mixed blank into the steel mold, and use a hydraulic brick press to press bidirectionally to make a foamed ceramic green body. The molding press...

Embodiment 2

[0036]A method for preparing a foamed ceramic thermal insulation board by using the Yellow River silt and red mud, it comprises the following steps:

[0037] 1) Raw material crushing: Red mud, Yellow River sediment, clay, high-temperature flux, and foaming agent are crushed separately (using a pair of roller crushers and ball mills), and passed through a 200-mesh sieve to obtain five kinds of powders for use; among them, clay It is bentonite; the high temperature flux is potassium feldspar; the foaming agent is silicon carbide;

[0038] 2) Mixing of raw materials: according to the percentage by weight of each raw material: 50% red mud, 30% yellow river sediment, 9.95% clay, 10% high-temperature flux, 0.05% foaming agent, weigh the materials, and mix them with a ball mill for 10 hours. Prepare the billet for use;

[0039] 3) Compression molding: Fill the mixed blank into the steel mold, and use a hydraulic brick press to press bidirectionally to make a foamed ceramic green bod...

Embodiment 3

[0045] A method for preparing a foamed ceramic thermal insulation board by using the Yellow River silt and red mud, it comprises the following steps:

[0046] 1) Raw material crushing: Red mud, Yellow River sediment, clay, high-temperature flux, and foaming agent are crushed separately (using a pair of roller crushers and ball mills), and passed through a 200-mesh sieve to obtain five kinds of powders for use; among them, clay It is kaolin; the high temperature flux is albite; the foaming agent is carbon black;

[0047] 2) Mixing of raw materials: according to the percentage by weight of each raw material: 10% red mud, 70% yellow river sediment, 9.95% clay, 10% high-temperature flux, 0.05% foaming agent, weigh the materials, and mix them with a ball mill for 15 hours. Prepare the billet for use;

[0048] 3) Compression molding: Fill the mixed blank into the steel mold, and use a hydraulic brick press to press bidirectionally to make a foamed ceramic green body. The molding pr...

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Abstract

The invention belongs to the field of environment-friendly building materials and building energy saving and provides a method for utilizing Yellow River silt and red mud for preparing a foaming ceramic heat insulating and preserving plate. The method is characterized by comprising the following steps of raw material crushing; raw material mixing, wherein 10-50% of red mud, 30-70% of Yellow River silt, 9.95-50% of clay, 9.95-50% of high-temperature fluxing agent and 0.05-5% of foaming agent are weighed by weight and mixed through a ball mill for 3-15 h, and a blank is prepared for standby; pressing and forming; engobe applying; biscuit sintering, wherein a decorated biscuit is flatly placed into a high-temperature-resistant concave sagger manufactured specially, the segger is placed into a roller kiln, and the decorated biscuit is taken out from the sagger after being sintered for 60-180 minutes at the temperature of 1080 DEG C-1350 DEG C to prepare a foaming ceramic heat insulating and preserving plate coarse product; the coarse product is cut off to prepare the foaming ceramic heat insulating and preserving plate. The foaming ceramic heat insulating and preserving plate prepared through the method has the advantages of being light, high in strength, and good in fireproof, flame retardant and aging resistant performance, and the service life of the plate is the same as that of a building.

Description

technical field [0001] The invention relates to a method for preparing a foamed ceramic thermal insulation board by using red mud and Yellow River silt as main raw materials, and belongs to the fields of green building materials and building energy conservation. Background technique [0002] Red mud is an industrial solid waste that is discharged after refining alumina from a kind of bauxite. For every ton of alumina produced, 1.0 to 2.0 tons of red mud are generally produced incidentally. The discharge of red mud is large and the utilization rate is low, causing serious pollution to the environment. Scholars at home and abroad have explored the use of red mud to prepare cement, glass, ceramics and wall materials. Japanese invention patent "Red mud treatment method and cement clinker production method" (JP2003061008) discloses a production method of cement clinker using red mud; Chinese invention patent "New preparation method of red mud light wall" (CN102503507A) discloses...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B33/132
CPCY02P40/60
Inventor 徐晓虹吴建锋郑树清
Owner WUHAN UNIV OF TECH
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