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Vanadium-nitrogen co-doped titanium-containing blast furnace slag photocatalytic material and preparation method thereof

A technology of photocatalytic materials and blast furnace slag, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effect of improving photocatalytic efficiency and increasing specific surface area

Pending Publication Date: 2022-05-20
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Over the years, through the efforts of various talents, the level of science and technology in our country has been continuously improved, and the blast furnace smelting technology has been continuously improved, even reaching the international advanced level. However, problems such as the reuse of blast furnace slag still need to be resolved.

Method used

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  • Vanadium-nitrogen co-doped titanium-containing blast furnace slag photocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing a vanadium nitrogen co-doped titanium-containing blast furnace slag photocatalytic material, comprising the following steps:

[0019] 1. First use a ball mill to grind the blast furnace slag to 100-200 mesh, and then use an agate mortar to hand-grind it to tens of microns.

[0020] 2. Put 10 g of pretreated high-titanium blast furnace slag into an agate mortar, and manually mix it with 1.42 g (doping amount: 45%) of ammonium metavanadate for about 120 minutes. Then, a vanadium-doped photocatalyst was prepared by a multi-component solid-phase sintering method, and the mixture was calcined in a muffle furnace at 800° C. for about two hours.

[0021] 3. Wait for it to cool down to room temperature naturally, and then use an agate mortar to hand grind it to tens of microns to obtain a photocatalyst of vanadium-doped high-titanium blast furnace slag.

[0022] 4. The liquid phase method is adopted, and the high-titanium type blast furnace slag doped wi...

Embodiment 2

[0025] A method for preparing a vanadium nitrogen co-doped titanium-containing blast furnace slag photocatalytic material, comprising the following steps:

[0026] 1. First use a ball mill to grind the blast furnace slag to 100-200 mesh, and then use an agate mortar to hand-grind it to tens of microns.

[0027] 2. Put 10 g of pretreated high-titanium blast furnace slag into an agate mortar, and manually mix it with 1.42 g (doping amount: 45%) of ammonium metavanadate for about 120 minutes. Then, a vanadium-doped photocatalyst was prepared by a multi-component solid-phase sintering method, and the mixture was calcined in a muffle furnace at 800° C. for about two hours.

[0028] 3. Wait for it to cool down to room temperature naturally, and then use an agate mortar to hand grind it to tens of microns to obtain a photocatalyst of vanadium-doped high-titanium blast furnace slag.

[0029] 4. The liquid phase method is adopted, and the high-titanium type blast furnace slag doped wi...

Embodiment 3

[0032] A method for preparing a vanadium nitrogen co-doped titanium-containing blast furnace slag photocatalytic material, comprising the following steps:

[0033] 1. First use a ball mill to grind the blast furnace slag to 100-200 mesh, and then use an agate mortar to hand-grind it to tens of microns.

[0034] 2. Put 10 g of pretreated high-titanium blast furnace slag into an agate mortar, and manually mix it with 1.42 g (doping amount: 45%) of ammonium metavanadate for about 120 minutes. Then, a vanadium-doped photocatalyst was prepared by a multi-component solid-phase sintering method, and the mixture was calcined in a muffle furnace at 800° C. for about two hours.

[0035] 3. Wait for it to cool down to room temperature naturally, and then use an agate mortar to hand grind it to tens of microns to obtain a photocatalyst of vanadium-doped high-titanium blast furnace slag.

[0036]4. The liquid phase method is adopted, and the high-titanium type blast furnace slag doped wit...

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Abstract

The invention discloses a preparation method of a vanadium-nitrogen co-doped titanium-containing blast furnace slag photocatalytic material, which comprises the following steps: (1) grinding blast furnace slag, mixing with ammonium metavanadate, and calcining the mixture; (2) cooling the calcined product to room temperature, and continuously grinding to obtain a vanadium-doped photocatalyst; (3) adding a vanadium-doped photocatalyst into ultrapure water, then putting the ultrapure water on a magnetic stirrer, violently stirring, and then adding glacial acetic acid to obtain a first solution; dropwise adding an ammonium nitrate solution into the first solution, and continuously stirring to obtain a second solution; the second solution is put into a drying oven to be dried, grinding and high-temperature calcination are conducted after drying, grinding is conducted again after natural cooling, and the vanadium and nitrogen co-doped high-titanium blast furnace slag photocatalyst is obtained. According to the method, the crystal structure of the blast furnace slag is changed by using a liquid phase method, crystal grains are refined, and the specific surface area is increased, so that the photocatalytic efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of slag recovery and treatment, in particular to a vanadium nitrogen co-doped titanium-containing blast furnace slag photocatalytic material and a preparation method thereof. Background technique [0002] China is rich in vanadium-titanium magnetite resources. Among them, Panzhihua, known as the capital of vanadium and titanium, is the main vanadium-titanium magnetite ore area in my country. However, about 3 million tons of Panzhihua Iron and Steel blast furnace slag will be produced every year, and it has been piled up so far. It has reached 6,000 tons, causing a lot of resources to be wasted and the environment polluted. [0003] Panzhihua Iron and Steel blast furnace slag is a five-element slag, which is a typical blast furnace slag, and the content of titanium dioxide is about 21% to 23%. It is not only an industrial waste, but also a secondary resource rich in titanium. Due to its excellent properties, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10B01J37/08C02F1/32C02F101/30C02F101/36C02F101/38
CPCB01J27/24B01J37/0036B01J37/088C02F1/32C02F2101/30C02F2101/34C02F2101/36C02F2101/308C02F2101/40C02F2305/10B01J35/39B01J35/61Y02P10/20
Inventor 杨丽清霍红英邹敏王意霞毛润莎刘斯阅
Owner PANZHIHUA UNIV
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