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Method for reducing the content of titanium nitride and/or titanium carbide in molten slag

A technology of titanium nitride and titanium carbide, which is applied in the field of reducing the content of titanium nitride and/or titanium carbide in slag, and can solve the problems of high cost and low iron recovery rate

Active Publication Date: 2022-05-20
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for reducing the content of titanium nitride and / or titanium carbide in the molten slag, so as to solve the problems in the prior art of reducing the content of titanium carbide and / or titanium nitride in the slag and the high cost of iron The problem of low recovery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] For the slag, the following oxidation process is used for treatment: the smelting flue gas of the vanadium-titanium magnetite is sprayed into the above-mentioned slag by means of top blowing for oxidation treatment to obtain the reacted melt and CO and H 2 , wherein the ratio between the moles of water and / or carbon dioxide in the smelting flue gas and the moles of titanium carbide and / or titanium nitride in the slag is 2:1. Produced CO and H 2 It can be used as a reducing agent or fuel in the molten pool smelting process. The above method avoids the formation of foamy slag and makes the smelting process go smoothly.

Embodiment 2

[0047] The difference between embodiment 2 and embodiment 1 is that

[0048] The ratio between the moles of water and / or carbon dioxide in the smelting flue gas and the moles of titanium carbide and / or titanium nitride in the slag is 3:1, and finally the reacted melt and CO and H 2 , to avoid the formation of foamy slag, so that the smelting process goes smoothly.

Embodiment 3

[0050] The difference between embodiment 3 and embodiment 1 is that

[0051] The ratio between the moles of water and / or carbon dioxide in the smelting flue gas and the moles of titanium carbide and / or titanium nitride in the slag is 4:1, and finally the reacted melt and CO and H 2 , to avoid the formation of foamy slag, so that the smelting process goes smoothly.

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PUM

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Abstract

The invention provides a method for reducing the content of titanium nitride and / or titanium carbide in molten slag. The molten slag is the molten slag produced during the smelting process of vanadium-titanium magnetite, and the method includes oxidizing the molten slag with raw materials containing water and / or carbon dioxide to obtain a reacted melt. The above method effectively reduces the content of titanium carbide and / or titanium nitride in the molten slag. And the above-mentioned method of reducing titanium carbide and / or titanium nitride in the slag of the present application is economical and environmentally friendly. Compared with the method of retaining part of FeO in the prior art, the above-mentioned method of the present application reduces the carbonization in the slag. Based on the content of titanium and / or titanium nitride, the waste of iron is avoided, the cost is reduced, and the comprehensive recovery rate of iron is improved.

Description

technical field [0001] The invention relates to the technical field of vanadium-titanium-magnetite slag, in particular to a method for reducing the content of titanium nitride and / or titanium carbide in molten slag. Background technique [0002] Vanadium-titanium magnetite is widely distributed in the world, among which, my country's vanadium-titanium magnetite is mainly distributed in the Panxi area of ​​Sichuan and the Chengde area of ​​Hebei. With the continuous expansion of the application field of vanadium-titanium functional materials, the comprehensive utilization of vanadium-titanium magnetite has been paid more and more attention by various countries. At present, the comprehensive utilization of vanadium-titanium magnetite at home and abroad is mainly based on the Resource characteristics are achieved by choosing different smelting and separation and extraction processes. [0003] At present, the smelting process of vanadium-titanium magnetite includes blast furnac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/04
CPCC21B5/04C21B2400/02Y02P10/20
Inventor 郭亚光王云李东波裴忠冶陈学刚徐小锋高永亮
Owner CHINA ENFI ENGINEERING CORPORATION