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Method for producing radiation resisting plates

A radiation protection and sheet technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as land occupation, swampy, polluted groundwater sources, etc., to achieve the effect of high value-added utilization

Active Publication Date: 2016-03-30
BEIJING NEW BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, it may not only cause soil alkalization and swamping, pollute surface and underground water sources, occupy a large amount of land, but also cause secondary waste of resources

Method used

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  • Method for producing radiation resisting plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take 30 grams of Bayer process red mud (iron oxide content is 32% by weight) and disperse in 1.0L water, add 15mL concentrated hydrochloric acid (mass fraction is 37%), process for 30 minutes; then add water 2.0L, add 2g reducing agent sodium sulfite, And use 2mol / L sodium hydroxide solution to adjust the pH value to about 9, then add 100 grams of mineral wool fiber, 30 grams of slaked lime, 5 grams of brucite fiber, 20 grams of clay, 10 grams of starch, continue to stir and beat, and finally add sulfuric acid 1.0 g of aluminum, stirred for 1 minute, filtered, shaped, and dried at 180° C. for 1 hour to obtain a radiation-proof insulation board with a thickness of 10 mm.

Embodiment 2

[0036] Take 35 grams of Bayer process red mud (iron oxide content is 32% by weight) and disperse in 1.0L water, add 18mL concentrated hydrochloric acid (mass fraction is 37%), process for 30 minutes; then add water 2.0L, add 2g reducing agent sodium sulfite, And use 2mol / L sodium hydroxide solution to adjust the pH value to about 9, then add 100 grams of mineral wool fiber, 30 grams of slaked lime, 5 grams of gypsum whiskers, 20 grams of clay, 10 grams of starch, continue to stir and beat, and finally add polypropylene 0.5 g of amide, stirred for 1 minute, filtered, shaped, and dried at 180°C for 1 hour to obtain a radiation-proof insulation board with a thickness of 10 mm.

Embodiment 3

[0038] Take 40 grams of Bayer process red mud (with iron oxide content of 40% by weight) and disperse it in 1.0L of water, add 20mL of concentrated hydrochloric acid (mass fraction: 37%), and treat for 30 minutes; then add 2.0L of water, and add 1.2g of reducing agent for hydration Hydrazine (concentration 80% by weight), and adjust the pH value to about 9 with the sodium hydroxide solution of 2mol / L, then add 100 gram mineral wool fibers, 40 gram slaked lime, 5 gram wollastonite fibers, 15 gram clay, 10 gram Starch, stirring and beating, finally adding 1 gram of aluminum sulfate, stirring for 1 minute, filtering, molding, drying at 180°C for 1 hour to obtain a radiation-proof insulation board with a thickness of 10mm.

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Abstract

The invention provides a method for producing radiation resisting plates. The method comprises the following steps: processing a red mud-containing aqueous dispersion by using an acid, adding a reducing agent, adjusting the pH value of the aqueous dispersion to 8-9 by using an alkali, and mixing the obtained aqueous dispersion with a material for making heat insulation plates to make the heat insulation plates. The heat insulation plates made of a magnetic iron oxide wave absorbing material and having magnetic properties are produced from red mud through corresponding acid and alkalization treatment, so electromagnetic waves are absorbed to realize indoor electromagnetic radiation resistance, and wastes are changed into valuables to realize high added value utilization of solid wastes.

Description

technical field [0001] The invention relates to a method for preparing a radiation-proof plate. Background technique [0002] Red mud is a kind of solid waste produced by the alumina industry, and its massive discharge has caused direct or indirect impacts on human production and life. At present, most of the treatment methods for the red mud produced by domestic and foreign alumina plants are transporting to storage yards, damming wet storage or dry storage after drying, dehydration and evaporation. In this way, it may not only cause soil alkalization and swamping, pollute surface and underground water sources, occupy a large amount of land, but also cause secondary waste of resources. [0003] At present, with the continuous development of urban economy and science and technology, electronics, communications, computers, automobiles and electrical equipment have entered the family, and the man-made electromagnetic energy in urban space has increased year by year. my countr...

Claims

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Application Information

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IPC IPC(8): C04B28/10C04B18/04
CPCY02W30/91
Inventor 朱清玮周建中武发德张羽飞
Owner BEIJING NEW BUILDING MATERIAL
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