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Method for preparing photocatalysis material by using iron blast-furnace slag containing titanium

A photocatalytic material and blast furnace slag technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of high cost and unusable blast furnace slag containing titanium dioxide.

Inactive Publication Date: 2003-10-08
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems that existing glass and ceramic materials using pure titanium dioxide as photocatalytic materials have a high cost and that blast furnace slag containing titanium dioxide cannot be used, the invention provides a method for preparing photocatalytic materials by using titanium dioxide-containing blast furnace slag

Method used

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Examples

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example 2

[0028] A photocatalytic coating is prepared according to the process provided by the present invention: the ratio of materials is: 88.7% of blast furnace slag (wherein the content of titanium dioxide is 22.6%), 8% of water glass, 3% of rare earth, and 0.3% of tungsten oxide. The material of the present invention is sprayed on the surface of wet cement slurry with a thickness of 0.4mm, and is combined during the hydration and hardening process of cement to obtain a coating with an appearance similar to the color of the cement slurry. Use this method to make a small test block, and the area of ​​the sprayed photocatalytic material is 20cm 2 , test after curing in tap water for seven days. Put the test piece into the dilute aqueous solution of inert dye methylene blue (200ml, the concentration is 5mg / L), and use the decomposition rate of the dye methylene blue in the solution to evaluate the photocatalytic effect of the photocatalytic material. When the irradiation intensity is g...

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Abstract

A process for preparing photocatalytic material from TiO2-contained slag of blast furnace and less compound of transition metal or RE includes breaking raw materials, dressing, pre-calcining, proportioning, ball grinding, carrying, drying, calcining and cooling. After its slurry is carried on the surface of ceramics, metal, glass, or building material, it can decompose the organic pollutant in water, and cleaning and deodouring ambient air.

Description

Technical field [0001] The invention belongs to a method for preparing ceramic materials, in particular to a method for preparing photocatalyst materials with titanium-containing blast furnace slag. Background technique [0002] Glasses and ceramic materials using pure titanium dioxide as photocatalytic materials have been published, but the use of titanium dioxide-containing blast furnace slag as photocatalytic materials has not been reported so far. The cost of glass and ceramic materials using pure titanium dioxide as photocatalytic materials is very high, and the blast furnace slag containing titanium dioxide is a kind of metallurgical waste, and a large amount of accumulation is easy to cause pollution. Contents of the invention [0003] Aiming at the problems that existing glass and ceramic materials using pure titanium dioxide as photocatalytic materials have high cost, and blast furnace slag containing titanium dioxide cannot be used, the invention provides a metho...

Claims

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Application Information

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IPC IPC(8): B01J21/06
Inventor 薛向欣杨合左良杨建段培宁姜涛
Owner NORTHEASTERN UNIV
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