Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing photocatalytic material by titanic iron ore concentrate wet chemical method

A technology of photocatalytic material and wet chemical method, which is applied in the field of photocatalytic material preparation, can solve the problems of low comprehensive utilization of iron, difficult utilization process, complicated process, etc., and achieves the avoidance of recycling process, low price and high photocatalytic activity. high effect

Inactive Publication Date: 2009-12-09
UNIV OF SCI & TECH BEIJING
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ilmenite can be used to produce artificial rutile, high-titanium slag, sponge titanium, titanium alloy, titanium dioxide, etc., but in the production process, the iron element in ilmenite is removed as impurities, forming a large number of iron-containing by-products, and The process is relatively complicated, and there are many difficulties in the utilization process
At present, in the process of comprehensive utilization of ilmenite, either the energy consumption is too high, or the comprehensive utilization of iron is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing photocatalytic material by titanic iron ore concentrate wet chemical method
  • Method for preparing photocatalytic material by titanic iron ore concentrate wet chemical method
  • Method for preparing photocatalytic material by titanic iron ore concentrate wet chemical method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The chemical composition of the ilmenite concentrate used in this embodiment is: TiO 2 =52.03% by mass, TFe=28.2% by mass, MgO=4.25% by mass, SiO 2 = 1.80% by mass, Al 2 o 3 = 1.04 mass%, CaO = 0.56 mass%, Na 2 O=0.10 mass%, MnO=0.67 mass%.

[0019] The particle size distribution of the collected ilmenite concentrate is 0.1-10 μm after crushing. According to mineral-acid ratio = 1 / 25 (i.e. weight of titanium concentrate / volume of concentrated hydrochloric acid), weigh titanium concentrate and concentrated hydrochloric acid into a closed container, heat the container and control the temperature to 90°C, and control the acid leaching time to 3 hours. Filter to obtain a dark yellow leachate, and wash the leach residue with deionized water several times. Then slowly add concentrated ammonia water dropwise to the leachate, continuously stir the leachate, control the final pH value to 7, and completely precipitate the Fe and Ti ions in the leachate. The resulting precip...

Embodiment 2

[0022] The initial raw materials and processing steps used in this embodiment are the same as in Example 1. According to the mineral acid ratio = 1 / 20 (i.e. titanium concentrate weight / concentrated hydrochloric acid volume), weigh titanium concentrate and concentrated hydrochloric acid into a closed container, heat the container and control the temperature to 100°C, and control the acid leaching time to 2.5h . Filter to obtain a dark yellow leachate, and wash the leach residue with deionized water several times. Then slowly add concentrated ammonia water dropwise to the leaching solution to control the final pH value to 9 to completely precipitate the Fe and Ti ions in the leaching solution. The resulting precipitate was aged for 24 h, then separated by filtration and washed with deionized water several times. Control the molar ratio of (doped zinc ion) / (iron ion+titanium ion) to be 1, the molar ratio of the amount of citric acid to the total amount of metal ions (zinc+iron+...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size distributionaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a photocatalytic material by using ilmenite concentrate as a raw material, belonging to the field of functional materials. It is characterized in that ilmenite is decomposed with concentrated hydrochloric acid first, iron and titanium elements enter the solution, and then the iron and titanium elements are purified by chemical precipitation. According to actual needs, zinc elements can be doped, and the sol-gel complexed by citric acid Metal composite oxide photocatalytic materials were prepared by glue combustion synthesis process. The invention comprehensively utilizes two components of iron and titanium in ilmenite, avoids the recycling process of iron-containing by-products, and is a new technology for preparing new photocatalytic materials at low cost; the prepared photocatalytic materials have fine particles and are photosensitive It has high catalytic activity and strong light absorption in the ultraviolet and visible light regions. It can be used in solar energy utilization fields such as photocatalysis and photoelectric conversion, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular provides a method for preparing photocatalytic materials by using ilmenite concentrate as a raw material and adopting a wet chemical method. Background technique [0002] It degrades harmful pollutants through the photocatalytic redox effect without secondary pollution, and is a green and environmentally friendly catalytic technology with development prospects. Various types of multi-metal composite oxides have excellent redox properties and show high activity in chemical reactions, among which perovskite ABO 3 Composite oxide, perovskite-like A 2 BO 4 Composite oxide and spinel AB 2 o 4 Composite oxides are new semiconductor photocatalytic materials with three different structures, which have the characteristics of high utilization rate of visible light and high photocatalytic efficiency. The application of iron-titanium oxide and zinc-iron oxide in the fields of electr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J23/80B01J21/06
Inventor 徐利华邸云萍刘明王缓
Owner UNIV OF SCI & TECH BEIJING