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 undergr

Method used

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  • Method for producing radiation resisting plates

Examples

Experimental program
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Example Embodiment

[0033] Example 1

[0034] Take 30 grams of Bayer process red mud (with iron oxide content of 32% by weight) dispersed in 1.0L of water, add 15mL of concentrated hydrochloric acid (mass fraction of 37%), and treat for 30 minutes; then add 2.0L of water, and add 2g of reducing agent sodium sulfite, And use 2mol / L sodium hydroxide solution to adjust the pH 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 beating, and finally add sulfuric acid Aluminum 1.0g, stirred for 1 minute, filtered, molded, and dried at 180°C for 1 hour to obtain a radiation-proof insulation board with a thickness of 10 mm.

Example Embodiment

[0035] Example 2

[0036] Take 35 grams of Bayer process red mud (with iron oxide content of 32% by weight) dispersed in 1.0L of water, add 18mL of concentrated hydrochloric acid (mass fraction of 37%), and treat for 30 minutes; then add 2.0L of water and add 2g of reducing agent sodium sulfite, And adjust the pH to about 9 with 2mol / L sodium hydroxide solution, 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 beating, and finally add polypropylene 0.5 g of amide, stirred for 1 minute, filtered, molded, and dried at 180°C for 1 hour to obtain a radiation-proof and thermal insulation board with a thickness of 10 mm.

Example Embodiment

[0037] Example 3

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

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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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