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Method for reducing content of titanium nitride and/or titanium carbide in 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 molten slag, can solve the problems of high cost and low iron recovery rate, achieve the improvement of comprehensive recovery rate, avoid waste, reduce cost effect

Active Publication Date: 2021-01-15
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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Abstract

The invention provides a method for reducing the content of titanium nitride and / or titanium carbide in slag. The slag is slag generated in a smelting process of vanadium-titano magnetite. The methodcomprises the step that raw materials containing water and / or carbon dioxide are adopted for conducting oxidation treatment on the slag, so that reacted melt is obtained. According to the method, thecontent of titanium carbide and / or titanium nitride in the slag is effectively reduced. The method for reducing titanium carbide and / or titanium nitride in the slag is economical and environmentally friendly, and compared with a method of reserving part FeO in the prior art, the method for reducing content of titanium nitride and / or titanium carbide in the slag has the advantages that on the basisthat the content of titanium carbide and / or titanium nitride in the slag is reduced, waste of iron is avoided, the cost is reduced, and the comprehensive recovery rate of iron is increased.

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 Applications(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