Insulation board and preparation method thereof

A technology of thermal insulation board and red mud, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of polluted surface and groundwater sources, secondary waste of resources, occupation of land, etc., achieving small thickness and saving The effect of energy saving of resources and production process

Inactive Publication Date: 2015-09-30
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such treatment may cause soil alkalization and swamping, pollute surface and underground water sources, occupy a large amount of land, and cause secondary waste of resources

Method used

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  • Insulation board and preparation method thereof
  • Insulation board and preparation method thereof
  • Insulation board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 100 grams of mineral wool fiber and 40 grams of red mud (Bayer process red mud of Shandong Aluminum Company) were dispersed in 3.0L of water, then 40 grams of slaked lime was added to stir the slurry, and then 5 grams of inorganic reinforcing fiber (wollastonite fiber) was added, 15 grams of clay, 10 grams of starch, continue to stir, and finally add 1.0 grams of aluminum sulfate, stir for 1 minute, filter, shape, and dry at 180°C for 1 hour to obtain a red mud-based insulation board with a thickness of 10mm.

Embodiment 2

[0025] Disperse 100 grams of mineral wool fiber and 30 grams of red mud (sintered red mud of Shandong Aluminum Company) in 3.0L of water, then add 30 grams of slaked lime to stir and make a slurry, then add 5 grams of inorganic reinforcing fiber (gypsum whiskers), 20 grams of clay gram, 10 grams of starch, continue to stir, and finally add 1.0 grams of polyacrylamide, stir for 1 minute, filter, shape, and dry at 180 ° C for 1 hour to obtain a red mud-based insulation board with a thickness of 10 mm.

Embodiment 3

[0027] Disperse 100 grams of mineral wool fiber and 50 grams of red mud (mixed red mud of Shanxi Aluminum Plant) in 3.0L of water, then add 50 grams of slaked lime to stir and beat, then add 5 grams of inorganic reinforcing fiber (brucite fiber), clay 10 grams, 10 grams of starch, continue to stir, and finally add 1.0 grams of aluminum sulfate, stir for 1 minute, filter, shape, and dry at 180°C for 1 hour to obtain a red mud-based insulation board with a thickness of 12mm.

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PUM

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Abstract

The invention provides an insulation board comprising the following raw material components in parts by weight: 100 parts of inorganic fibers, 30-50 parts of red mud, 30-50 parts of slaked lime, 3-5 parts of inorganic reinforced fibers, 10-20 parts of clay, 5-15 parts of starch and 1-2 parts of a flocculating agent. The insulation board provided by the invention is produced by using a lot of stacked waste materials namely red mud produced during production of aluminum oxide as a main material to realize high-added-value comprehensive utilization of the red mud. The preparation of the insulation board does not need calcination and sintering, so that the production process is energy-saving. The prepared board is nontoxic and non-inflammable, and is an environment-friendly material. The insulation board prepared by the method provided by the invention has higher mechanical strength than that of an existing mineral wool board, and has lower thermal conductivity.

Description

technical field [0001] The invention relates to a thermal insulation board, in particular to a thermal insulation board and a preparation method thereof. Background technique [0002] Red mud is a waste produced by the alumina industry, and its chemical composition is extremely complex. A large amount of red mud has directly or indirectly affected human production and life. At present, most alumina factories at home and abroad transport the red mud to the storage yard, build a dam for wet storage, or dry the red mud for dehydration and evaporation and dry storage. Such treatment may cause soil alkalization and swamping, pollute surface and underground water sources, occupy a large amount of land, and cause secondary waste of resources. The environmental risk of red mud stockpiling has long attracted the attention of all walks of life. The key to solving the red mud problem is the secondary resource utilization and harmless treatment of red mud. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/04
CPCY02W30/91
Inventor 朱清玮周建中武发德王鹏起
Owner BEIJING NEW BUILDING MATERIALS PLC
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